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  • 51. Bastviken, David
    et al.
    Ejlertsson, Jörgen
    Tranvik, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Measurement of Methane Oxidation in Lakes: A Comparison ofMethods2002In: Environ. Sci. Technol., Vol. 36, no 15, p. 3354-3361Article in journal (Refereed)
    Abstract [en]

    Methane oxidation in lakes constrains the methane emissions to the atmosphere and simultaneously enables the transfer

  • 52. Bastviken, David
    et al.
    Ejlertsson, Jörgen
    Tranvik, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Similar bacterial growth on dissolved organic matter in anoxic and oxic lake water2001In: Aquatic Microbial Ecology, Vol. 24, no 1, p. 41-49Article in journal (Refereed)
    Abstract [en]

    Anoxic metabolism yields less energy per unit substrate utilized than oxic respiration. In addition, substrate availability is believed to be reduced under anoxic conditions since oxygenases cannot be used. Consequently, it is generally assumed that bacte

  • 53.
    Bastviken, David
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Persson, Linn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Odham, Göran
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Tranvik, Lars
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    Degradation of dissolved organic matter in oxic and anoxic lake water2004In: Limnol. Oceanogr., Vol. 49, no 1, p. 109–116-Article in journal (Refereed)
    Abstract [en]

    Decades of conflicting results have fueled a debate about how O2 affects organic matter (OM) degradation and carbon cycling. In a laboratory study, using both OM taken directly from a humic lake and chemically isolated fulvic acid, we monitored the mineralization of dissolved OM in freshwater under purely oxic and anoxic conditions, under oxic then anoxic conditions, and under anoxic then oxic conditions, for 426 d. Between 5% and 24% of the initial OM was mineralized, with most extensive mineralization occurring under purely oxic and anoxic–oxic conditions. A sequential change in the O2 regime did not result in greater overall degradation, but initially anoxic conditions favored subsequent oxic mineralization. A substantially greater fraction of the OM was degraded than in previous shorter studies, with as much as 50% of the total OM degradation occurring after 147 d into the experiment. Three fractions of the degradable OM were identified: OM degraded only under oxic conditions (68–78%), OM degraded more rapidly under anoxic conditions than under oxic conditions (16–18%), and OM degraded at equal rates under both oxic and anoxic conditions (6–14%). The degradation patterns of natural dissolved OM from a humic lake and chemically isolated fulvic acid were very similar, which indicates a similar level of bioavailability. The difference between anoxic and oxic degradation was greater in our long-term studies than in previous short-term experiments, which indicates that the oxic and anoxic degradation potentials vary with increasing overall OM recalcitrance and that similar oxic and anoxic degradation rates can be expected in short-term experiments in which <30% of the long-term degradable OM is allowed to decompose.

  • 54. Bastviken, David
    et al.
    Tranvik, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    The leucine incorporation method estimates bacterial growth equally well in both oxic and anoxic lake waters2001In: Applied and Environmental Microbiology, Vol. 67, no 7, p. 2916-2921Article in journal (Refereed)
    Abstract [en]

    Bacterial biomass production is often estimated from incorporation of radioactively labeled leucine into protein, in both oxic and anoxic waters and

  • 55.
    Battin, Tom J.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Luyssaert, Sebastiaan
    Kaplan, Louis A.
    Aufdenkampe, Anthony K.
    Richter, Andreas
    Tranvik, Lars J.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    The boundless carbon cycle2009In: Nature Geoscience, ISSN 1752-0894, Vol. 2, no 9, p. 598-600Article in journal (Refereed)
  • 56.
    Beier, Sara
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Witzel, Karl-Paul
    Marxsen, Jürgen
    Bacterial community composition in Central European running waters examined by temperature gradient gel electrophoresis and sequence analysis of 16S rRNA genes.2008In: Appl Environ Microbiol, ISSN 1098-5336, Vol. 74, no 1, p. 188-99Article in journal (Refereed)
  • 57.
    Bergek, Sara
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
    Olsson, Jens
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Spatiotemporal analysis shows stable genetic differentiation and barriers to dispersal in the Eurasian perch (Perca fluviatilis L.)2009In: Evolutionary Ecology Research, ISSN 1522-0613, E-ISSN 1937-3791, Vol. 11, no 5, p. 827-840Article in journal (Refereed)
    Abstract [en]

    Background: Recently, unexpected or cryptic barriers to gene flow causing genetic discontinuities have been found in a number of animal taxa, even in apparently highly connected areas such as aquatic environments. 

    Goal: Investigate the temporal stability of previously documented microgeographic genetic structure in a fish.

    Organism: Eurasian perch (Perca fluviatilis L.)

    Method: We sampled four locations over a period of 2 years. We used six microsatellites to investigate population differentiation. We compared within-year to between-year differentiation.

    Results: The significant genetic differentiation found between locations in 2004 was still present in 2006. The strongest barriers to gene flow in the lake were consistent over both sampling periods. Furthermore, temporal differentiation existed within each site between the years. Populations of perch appear to cluster in different patches in the lake that harbour genetically differentiated groups of fish. Hence, limited migration and barriers to dispersal can persist over time, even at a very small geographical scale and in an open aquatic environment.

  • 58.
    Bergek, Sara
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
    Sundblad, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Björklund, Mats
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
    Population differentiation in perch Perca fluviatilis: environmental effects on gene flow?2010In: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 76, no 5, p. 1159-1172Article in journal (Refereed)
    Abstract [en]

    Environmental parameters were used to investigate barriers to gene flow and genetic differentiation in the Eurasian perch (Perca fluviatilis L.) at a small geographical scale in an archipelago system. Significant genetic differentiation was found among locations. Distance per se did not play a major role in the reduction of gene flow. Instead, the largest genetic differences between populations correlated with major changes in environmental conditions, such as temperature at time of spawning. The results show that genetic divergence can arise between populations in habitats thought to be highly connected, and that environmental variables can influence the level of gene flow between populations, including those that are at small spatial scales (tens of kilometres). The importance of a landscape approach when investigating genetic differentiation and defining barriers to gene flow is highlighted.

  • 59. Bergfur, J.
    et al.
    Johnson, J.K
    Sandin, L.
    Goedkoop, W.
    Nygren, kristiina
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Effects of nutrient enrichment on boreal streams: Invertebrates, fungi and leaf-litter breakdown2007In: Freshwater Biology, ISSN 0046-5070, E-ISSN 1365-2427, Vol. 52, no 8, p. 1618-1633Article in journal (Refereed)
    Abstract [en]

    Summary 1. The effect of nutrient enrichment on structural (invertebrate indices) and functional (leaf-litter breakdown rates) characteristics of stream integrity was studied in nine boreal streams.2. The results showed predicted changes in biotic indices and leaf-litter breakdown along a complex (principal component) nutrient gradient. Biotic indices were better correlated with nutrient effects than leaf-litter breakdown.3. Fungal biomass and invertebrate densities in the litter bags were positively correlated with leaf-litter breakdown, and both were also positively related to the nutrient gradient.4. Invertebrate community composition influenced breakdown rate. High breakdown rates at one site were associated with the high abundance of the detritivore Asellus aquaticus. 5. This study lends support to the importance of invertebrate and fungi as mediators of leaf-litter decomposition. However, our study also shows that study design (length of incubation) can confound the interpretation of nutrient-induced effects on decomposition.

  • 60. Bergström, A.K.
    et al.
    Blomqvist, P.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Effects of atmospheric nitrogen deposition on nutrient limitation and phytoplankton biomass in unproductive Swedish lakes2005In: Limnology and Oceanography, Vol. 50, no 3, p. 987-994Article in journal (Refereed)
  • 61. Bergström, Ann-Kristin
    et al.
    Algesten, Grete
    Sobek, Sebastian
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution. Limnologi. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Tranvik, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution. Limnologi. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Jansson, Mats
    Emission of CO2 from hydroelectric reservoirs in northern Sweden2004In: Archiv für Hydrobiologie, Vol. 159, p. 25-42Article in journal (Refereed)
    Abstract [en]

    Carbon dioxide in Swedish hydroelectric reservoirs and natural lakes was studied to assess whether the emission of CO2 from inland waters has increased due to construction of reservoirs, and to gauge how the CO2-emission from reservoirs relates to CO2-emission from combustion plants used for electricity production. We found that emission of CO2 from Swedish reservoirs was low and, at corresponding dissolved organic carbon concentration, similar to the CO2-emission from natural oligotrophic lakes. The total annual CO2-emission due to regulation for the seven rivers included in this study (which collectively represents 87% of the total hydroelectricity production in Sweden) was 50,000 tonnes of CO2. This emission represents 1.5 % of the yearly CO2-emission from Swedish electricity combustion plants. Thus, the CO2-emission from Swedish hydropower is much lower per unit of electricity produced than the emission from Swedish combustion plants. Emission of CO2 from Swedish reservoirs was lower than from most reservoirs in other boreal regions of the world. This difference is probably due to that a majority of the Swedish reservoirs are constructed by damming of natural lakes in alpine and upland boreal forest areas, which results in flooding of comparatively small areas with thin layers of soil organic carbon.

  • 62. Bergström, Ann-Kristin
    et al.
    Bigler, Christian
    Stensdotter, Ulrika
    Lindström, Eva S.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Composition and dispersal of riverine and lake phytoplankton communities in connected systems with different hydraulic retention times2008In: Freshwater Biology, ISSN 0046-5070, E-ISSN 1365-2427, Vol. 53, no 12, p. 2520-2529Article in journal (Refereed)
    Abstract [en]

    1. Lake phytoplankton community structure may be influenced by both internal factors (predation, competition, resource constraints) and external ones, such as dispersal of materials and cells between connected habitats. However, little is known about the importance of cell dispersal for phytoplankton community structure in lakes.

    2. We investigated the abundance and dispersal of phytoplankton cells between connected rivers and lakes, and analysed whether similarities in phytoplankton community composition between rivers and lakes were primarily related to cell import rates or to characteristics of the local habitat. We focused on lakes along a gradient of theoretical water retention times (TWRT). Two data sets from Swedish lakes were used; a seasonal study of two connected boreal forest lakes, differing in TWRT, and a multi-lake study of 13 lakes with a continuous range of TWRTs.

    3. Phytoplankton cells were transported and dispersed in all investigated rivers. In the seasonal study, cell import rates and similarities in phytoplankton community composition between the lake and its inlet(s) were much higher in the lake with a shorter TWRT. Phytoplankton community structure in different habitats was associated with total organic carbon (TOC). This indicates that local habitat characteristics may be important in determining lake phytoplankton community composition, even in the presence of substantial cell import.

    4. The multi-lake study also showed a negative relationship between TWRT and similarities in phytoplankton community composition between inlets and lakes. Moreover, similarity in community structure was related to both cell import rates from inlet to lake and differences in habitat characteristics between inlet and lake. However, the variable most strongly correlated with community structure was TOC, indicating that species sorting rather than a mass effect was the most important mechanism underlying the correlation between community structure and retention time.

    5. Overall, our data suggest that local habitat characteristics may play a key role in determining community similarity in this set of lakes covering a large range of habitat connectedness. Due to the strong co-variations between cell dispersal and TOC, it was hard to unequivocally disentangle the different mechanisms; hence, there is a need for further studies of the role of dispersal for phytoplankton community structures

  • 63. Bergström, Ann-Kristin
    et al.
    Jansson, Mats
    Blomqvist, Peter
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    Drakare, Stina
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    The influence of water colour and effective light climate on mixotrophic phytoflagellates in three small Swedish dystrophic lakes2001In: Verh. Internat. Verein. Limnol., Vol. 27, p. 1861-1865Article in journal (Refereed)
  • 64. Bergström, Ann-Kristin
    et al.
    Jansson, Mats
    Drakare, Stina
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    Blomqvist, Peter
    Occurence of mixotrophic flagellates in relation to bacterioplankton production, light regime and availability of inorganic nutrients in unproductive lakes with differing humic contents.2003In: Freshwater Biology, Vol. 48, p. 868-877Article in journal (Refereed)
  • 65.
    Bertilsson, S
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Evolutionary Biology. Department of Ecology and Evolution, Limnology. Limnologi.
    Jones, J B Jr
    Supply of dissolved organic matter to aquatic ecosystems: autochthonous sources2003In: Aquatic Ecosystems, Interactivity of Dissolved Organic Matter,, Elsevier Science, USA , 2003Chapter in book (Refereed)
    Abstract [en]

    1. Trophic polymorphism is a common phenomenon in many species. Trade-offs in foraging efficiency on different resources are thought to be a primary cause of such polymorphism.

    2. To test for a trade-off in foraging efficiency perch (Perca fluviatilis L.) were used from a population that differs in morphology between the littoral and pelagic habitat of a lake. Indoor aquarium experiments were performed with three different prey types in two different environments. It was predicted that the morphology of the individual would affect foraging efficiency in the different environments and on the different prey types through search and attack behaviour.

    3. Overall the foraging efficiency of perch was found to be related to individual morphology. A connection was also found between individual morphology and search and attack behaviour. Search behaviour but not attack behaviour was affected by the structure in the aquaria. Furthermore our results show that there are relations between search behaviour and detection rates and between attack behaviour and attack success.

    4. Our results give a mechanistic explanation for the differences in foraging efficiency between littoral and pelagic perch. These differences are probably driven by a functional trade-off between foraging performance and general body form.

  • 66.
    Bertilsson, S
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Widenfalk, A
    Photochemical degradation of PAHs in freshwaters and their impact on bacterial growth -influence of water chemistry.2002In: Hydrobiologia, Vol. 469, p. 23-32Article in journal (Refereed)
  • 67.
    Bertilsson, Stefan
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Berglund, Olof
    Karl, David M.
    Chisholm, Sallie W
    Elemental composition of marine Prochlorococcus and Syncehococcus: Implications for the ecological stoichiometry of the sea2003In: Limnology and Oceanography, Vol. 48, no 5, p. 1721-1731.Article in journal (Refereed)
  • 68.
    Bertilsson, Stefan
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    Berglund, Olof
    Pullin, Michael J
    Chisholm, Sallie W
    Release of dissolved organic matter by Prochlorococcus2005In: Vie et Milieu: Life and Environment, Vol. 55, no 3-4, p. 225-231Article in journal (Refereed)
  • 69.
    Bertilsson, Stefan
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Carlsson, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Granéli, Wilhelm
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Influence of solar radiation on the availability of dissolved organic matter to bacteria in the Southern Ocean2004In: Deep-Sea Research II: Topical Studies in Oceanography, Vol. 51, p. 2557-2568Article in journal (Refereed)
    Abstract [en]

    The influence of solar radiation on the ability of dissolved organic matter (DOM) to support bacterial growth, was studied in the eastern Atlantic sector of the Southern Ocean during the SWEDARP 1997/1998 cruise with SA Agulhas December 1997–February 1998. Vertical profiles of water samples (2–3000 m) were obtained from the Spring Ice Edge (SIE, 60°S, high chlorophyll-a) and from the Winter Ice Edge (WIE, 56°S, low chlorophyll-a) areas. Filter-sterilized water from each area and depth was incubated under natural solar radiation and in the dark for comparison. Photobleaching of humic substance fluorescence occurred in all studied water samples. The bleaching was typically larger in the initially more fluorescent deep waters, compared to the low-fluorescent surface waters. Both the irradiated water and the dark controls were re-inoculated with a mixed bacterial inoculum from the initially sampled water. Bacterial growth (accumulating cells) and bacterial production (protein synthesis) were monitored during a 16–19 day incubation of these cultures at near in situ temperature (2 °C). Bacterial growth in cultures prepared from SIE water was largest at the surface (2–25 m), while the growth in corresponding cultures from the WIE did not vary much over depth. In contrast to the observed photobleaching, no clear effects of the irradiation on the ability of the DOM to support bacterial growth could be observed in either of the experiments. Hence, the degradation of fluorescent structures and other photochemical alterations of the organic matter did not have a major effect on the total pool of biodegradable organic substrates. The lack of effects of photoreactions on bacterial growth potential in the present study disagrees with the short-term bacterial growth response observed in other oceanic environments. This could be due to the different experimental approaches employed (short-vs. long-term incubations) or may indicate that the impact of photoreactions on bacterial growth in the Southern Ocean differ substantially from aquatic systems that are more influenced by terrestrial environments, as well as the warmer oligotrophic oceanic environments.

  • 70.
    Bertilsson, Stefan
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Cavanaugh, C M
    Polz, M F
    A sequencing-independent method to generate oligonucleotide probes targeting a variable region in bacterial 16S rRNA by PCR with detachable primers.2002In: Appl. Environ. Microbiol., Vol. 68, no 12, p. 6077-6086Article in journal (Refereed)
  • 71.
    Bertilsson, Stefan
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Eiler, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Nordqvist, Anneli
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Jørgensen, Niels O.G.
    Links between bacterial production, amino acid utilization and community composition in productive lakes2007In: ISME Journal, ISSN 1751-7362, Vol. 1, no 6, p. 532-544Article in journal (Refereed)
    Abstract [en]

    Influence of distribution and abundance of bacterial taxa on ecosystem function are poorly understood for natural microbial communities. We related 16S rRNA-based terminal restriction fragment length polymorphism to bacterial production and arginine uptake kinetics to test if functional features of bacterioplankton in four lakes could be predicted from community composition. Maximum arginine uptake rate (arginine Vmax) ranged from 10% to 100% of bacterial production. Owing to high growth efficiencies on arginine (63–77%), the bacterial community could potentially saturate its carbon demand using this single organic substrate, for example, during sudden surges of free amino acids. However, due to low in situ concentrations of arginine in these lakes (<0.9 g l-1), actual uptake rates at ambient concentrations rarely exceeded 10% of Vmax. Bacterial production and arginine Vmax could be predicted from a subset of bacterial ribotypes, tentatively affiliated with several bacterial divisions (Cyanobacteria, Actinobacteria, Bacteroidetes and Proteobacteria). Multivariate statistical analysis indicates that there were both highly important and less important ribotypes for the prediction of bacterial production and arginine Vmax. These populations were either negatively or positively related to the respective functional feature, indicating contrasting ecological roles. Our study provides a statistically robust demonstration that, apart from environmental conditions, patterns in bacterial community composition can also be used to predict lake ecosystem function.

  • 72.
    Bertilsson, Stefan
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Hansson, Lars-Anders
    Graneli, Wilhelm
    Philibert, Aline
    Size-selective predation on pelagic microorganisms in arctic freshwaters2003In: Journal of Plankton Research, Vol. 25, no 6, p. 621-631Article in journal (Refereed)
  • 73.
    Bertilsson, Stefan
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Stepanauskas, Ramunas
    Cuadros-Hansson, Rocio
    Graneli, Wilhelm
    Wikner, Johan
    Tranvik, Lars
    Photochemically induced changes in bioavailable carbon and nitrogen pools in a boreal watershed1999In: AQUATIC MICROBIAL ECOLOGY, ISSN 0948-3055, Vol. 19, no 1, p. 47-56Article in journal (Refereed)
    Abstract [en]

    In several recent studies, a net stimulation of bacterial growth has been demonstrated after exposing humic surface waters to solar radiation or artificial ultraviolet radiation. This stimulation has been attributed to a photochemical release of bioavaila

  • 74.
    Bertilsson, Stefan
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Tranvik, Lars
    Photochemical transformation of dissolved organic matter in lakes2000In: Limnology and Oceanography, ISSN 0024-3590, Vol. 45, p. 753-762Article in journal (Refereed)
    Abstract [en]

    In a survey of photochemical transformation of dissolved organic matter (DOM) in lake water, we found photochemical production of dissolved inorganic carbon (DIC) and low molecular weight carboxylic acids (oxalic, malonic, formic, and acetic acid), upon s

  • 75.
    Bigg, E Keith
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Leck, Caroline
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Tranvik, Lars
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    Particulates of the surface microlayer of open water in the central Arctic Ocean in summer2004In: Marine Chemistry, Vol. 91, p. 131-141Article in journal (Refereed)
    Abstract [en]

    The particulate content of samples of the surface microlayer water collected from the open water between ice floes at latitudes 88° to 89°N in August 2001 was examined by transmission electron microscopy. Concentrations varied from 2×107 ml−1 to more than 1014 ml−1 although bacterial counts made in the same samples varied by only about 50%. Size distributions of the particles were also very variable with modal diameter sizes of 10 nm in some samples and 50 nm in others, the 50-nm particles appearing to be clusters of the 10 nm ones. A mucus-like material held the particles together in rafts, strings or in balls. The largest particles were compact electron-opaque aggregates of smaller particles. The particles appeared to have very similar characteristics to the “microcolloids” observed in bulk seawater in lower latitude oceans. X-ray analyses of the elements with atomic numbers >16 showed all signals to be weak, suggesting a mainly organic composition. The elements that were most commonly greater than background levels were all those associated with marine biological activity. Rapid aggregation of polymers to form colloids has been noted and is likely to be an important cause of the observed variability of particulate concentrations in the surface microlayer. The possibility of an equally rapid dispersal under the influence of ultraviolet light is raised.

  • 76.
    Blenckner, T.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Models as tools for understanding past, recent and future changes in large lakes.2008In: Hydrobiologia, ISSN 0018-8158, E-ISSN 1573-5117, Vol. 599, p. 177-182Article in journal (Refereed)
    Abstract [en]

    Large lakes currently exhibit ecosystem responses to environmental changes such as climate and land use changes, nutrient loading, toxic contaminants, hydrological modifications and invasive species. These sources have impacted lake ecosystems over a number of years in various combinations and often in a spatially heterogeneous pattern. At the same time, many different kinds of mathematical models have been developed to help to understand ecosystem processes and improve cost-effective management. Here, the advantages and limitations of models and sources of uncertainty will be discussed. From these considerations and in view of the multiple environmental pressures, the following emerging issues still have to be met in order to improve the understanding of ecosystem function and management of large lakes: (1) the inclusion of thresholds and points-of-no-return; (2) construction of general models to simulate biogeochemical processes for a large number of lakes rather than for individual systems; (3) improvement of the understanding of spatio-temporal variability to quantify biogeochemical fluxes accurately; and (4) inclusion of biogeochemical linkages between terrestrial and aquatic ecosystems in model approaches to assess the effects of external environmental pressures such as land-use changes. The inclusion of the above-mentioned issues would substantially improve models as tools for the scientific understanding and cost-effective management of large lakes that are subject to multiple environmental pressures in a changing future.

  • 77.
    Blenckner, Thorsten
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Adrian, Rita
    Arvola, Lauri
    Järvinen, Marko
    Nõges, Peeter
    Nõges, Tiina
    Pettersson, Kurt
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Weyhenmeyer, Gesa A.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Limnology.
    The impact of climate change on lakes in northern Europe2010In: The impact of climate change on European lakes / [ed] D.G. George, Springer , 2010, p. 339-358Chapter in book (Other academic)
  • 78.
    Blenckner, Thorsten
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Adrian, Rita
    Livingstone, David
    Jennings, Eleanor
    Weyhenmeyer, Gesa
    George, Glen
    Jankowski, Thomas
    Ärviken, Marko
    Aonghusa, Caitriona
    Noges, Tiina
    Straile, Dietmar
    Teubner, Katrin
    Large-scale climatic signatures in lakes across Europe: A meta-analysis2007In: Global Change Biology, ISSN 1354-1013, E-ISSN 1365-2486, Vol. 13, no 7, p. 1314-1326Article in journal (Refereed)
    Abstract [en]

    Recent studies have highlighted the impact of the winter North Atlantic Oscillation (NAO) on water temperature, ice conditions, and spring plankton phenology in specific lakes and regions in Europe. Here, we use meta-analysis techniques to test whether 18 lakes in northern, western, and central Europe respond coherently to winter climate forcing, and to assess the persistence of the winter climate signal in physical, chemical, and biological variables during the year. A meta-analysis approach was chosen because we wished to emphasize the overall coherence pattern rather than individual lake responses. A particular strength of our approach is that time-series from each of the 18 lakes were subjected to the same robust statistical analysis covering the same 23-year period. Although the strongest overall coherence in response to the winter NAO was exhibited by lake water temperatures, a strong, coherent response was also exhibited by concentrations of soluble reactive phosphorus and soluble reactive silicate, most likely as a result of the coherent response exhibited by the spring phytoplankton bloom. Lake nitrate concentrations showed significant coherence in winter. With the exception of the cyanobacterial biomass in summer, phytoplankton biomass in all seasons was unrelated to the winter NAO. A strong coherence in the abundance of daphnids during spring can most likely be attributed to coherence in daphnid phenology. A strong coherence in the summer abundance of the cyclopoid copepods may have been related to a coherent change in their emergence from resting stages. We discuss the complex nature of the potential mechanisms that drive the observed changes.

  • 79.
    Blenckner, Thorsten
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Hillebrand, Helmut
    North Atlantic Oscillation signatures in aquatic and terrestrial ecosystems -a meta-analysis2002In: Global Change Biology, Vol. 8, p. 203-212Article in journal (Refereed)
  • 80.
    Blenckner, Thorsten
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Earth Sciences, Department of Earth Sciences. Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Malmaeus, Mikael
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Earth Sciences, Department of Earth Sciences. Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Pettersson, Kurt
    Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Norr Malma feldstation.
    Climatic change and the risk of lake eutrophication2006In: Verh. Int. Verein. Limnol., Vol. 29, p. 1837-1841Article in journal (Refereed)
    Abstract [en]

    Climatic variation and change affect the dynamics of nutrients and ecosystem processes.

    The aim is to quantitatively evaluate changes in phosphorus dynamics resulting from a climate warming in lakes. Long-term data and the results of a regional climate model, a physical lake model and a phosphorus model generated for three Swedish lakes with different morphometry and trophic status were analysed. The analysis of the long-term data and the models varied greatly with respect to the variability and the response of the phosphorus dynamics to past and future climate scenarios. The risk of lake eutrophication will be discussed.

  • 81.
    Blomqvist, Peter
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    A proposed standard method for composite sampling of water chemistry and plankton in small lakes2001In: Environmental and Ecological Statistics, Vol. 8, no 2, p. 121-134Article in journal (Refereed)
    Abstract [en]

    In this paper a method for collection of vertically and horizontally integrated volume-weighted composite samples for analysis of water chemistry

  • 82.
    Blomqvist, Peter
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Evolutionary Biology. Department of Ecology and Evolution, Limnology.
    Early summer phytoplankton responses to experimental manipulations of grazing and nutrients in unlimed and limed Lake Njupfatet, central Sweden1997In: ARCHIV FUR HYDROBIOLOGIE, ISSN 0003-9136, Vol. 140, no 3, p. 321-346Article in journal (Refereed)
    Abstract [en]

    Phytoplankton biomass and succession during the spring-early summer period were studied in oligotrophic, moderately acidic, Lake Njupfatet during two consecutive years, one before and one after whole-lake calcite treatment. Liming had little effect on the

  • 83.
    Blomqvist, Peter
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Evolutionary Biology. Department of Ecology and Evolution, Limnology.
    Late summer phytoplankton responses to experimental manipulations of nutrients and grazing in unlimed and limed Lake Njupfatet, central Sweden1996In: ARCHIV FUR HYDROBIOLOGIE, ISSN 0003-9136, Vol. 137, no 4, p. 425-455Article in journal (Refereed)
    Abstract [en]

    Phytoplankton biomass and community composition were studied in Lake Njupfatet during two consecutive years, one before and one after whole-lake calcite treatment. As a result of the liming, total phosphorus decreased by 30%, and the average epilimnetic b

  • 84.
    Blomqvist, Peter
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Phytoplankton responses to biomanipulated grazing pressure and nutrient additions -enclosure studies in unlimed and limed Lake Njupfatet, central Sweden2001In: Environmental Pollution, Vol. 111, no 2, p. 333-348Article in journal (Refereed)
    Abstract [en]

    Enclosure experiments aimed to assess the role of Chaoborus larvae in regulating lower trophic levels under natural and nutrient-enriched conditions were performed in situ in the dimictic, oligotrophic clearwater Lake Njupfatet, central Sweden. One experi

  • 85.
    BLOMQVIST, Peter
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Evolutionary Biology. Department of Ecology and Evolution, Limnology.
    BELL, Russel T
    OLOFSSON, Hans
    STENSDOTTER, Ulrika
    VREDE, Katarina
    PLANKTON AND WATER CHEMISTRY IN LAKE NJUPFATET BEFORE AND AFTER LIMING1995In: CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, ISSN 0706-652X, Vol. 52, no 3, p. 551-565Article in journal (Refereed)
    Abstract [en]

    Moderately acidified Lake Njupfatet was studied during 2 consecutive years, before and after liming (calcite), and compared with corresponding data from six reference lakes. After liming, the concentration of total phosphorus in the lake water decreased b

  • 86.
    Blomqvist, Peter
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Brunberg, Anna-Kristina
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Lakes. Origin, ontogeny and natural functions1999In: Sustainable Water Management in the Baltic Sea Basin Vol. 1: Water in Nature, 1999, p. 93-108Chapter in book (Other academic)
  • 87.
    Blomqvist, Peter
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Brunberg, Anna-Kristina
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Brydsten, Lars
    River and river-related drainage area parameters for site investigation program2001Report (Other academic)
  • 88.
    Blomqvist, Peter
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    Jansson, Mats
    Drakare, Stina
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. Limnologi.
    Bergström, Ann-Kristin
    Brydsten, Lars
    Effects of additions of DOC on pelagic biota in a clearwater system: Results from a whole lake experiment in northern Sweden2001In: Microbial Ecology, Vol. 42, no 3, p. 383-394Article in journal (Refereed)
  • 89.
    Bohman, Irene M.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Tranvik, Lars J.
    The effects of shredding invertebrates on the transfer of organic carbon from littoral leaf litter to water-column bacteria2001In: Aquatic Ecology, Vol. 35, no 1, p. 45-50Article in journal (Refereed)
    Abstract [en]

    Leaf litter can be of great importance for the productivity of small oligotrophic lakes surrounded by deciduous forests.

  • 90.
    Bolnick, Daniel
    et al.
    University of Texas.
    Svanbäck, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Araujo, Mario
    Univ Estadual Campinas, Inst Biol, Programa Posgrad Ecol, Brazil.
    Persson, Lennart
    Umeå Universitet.
    Comparative support for the niche variation hypothesis that more generalized populations also are more heterogeneous2007In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 104, no 24, p. 10075-10079Article in journal (Refereed)
    Abstract [en]

    There is extensive evidence that some species of ecological generalists, which use a wide diversity of resources, are in fact heterogeneous collections of relatively specialized individuals. This within-population variation, or "individual specialization," is a key requirement for frequency-dependent interactions that may drive a variety of types of evolutionary diversification and may influence the population dynamics and ecological interactions of species. Consequently, it is important to understand when individual specialization is likely to be strong or weak. The niche variation hypothesis (NVH) suggests that populations tend to become more generalized when they are released from interspecific competition. This niche expansion was proposed to arise via increased variation among individuals rather than increased individual niche breadth. Consequently, we expect ecological generalists to exhibit stronger individual specialization, but this correlation has been repeatedly rejected by empiricists. The drawback with previous empirical tests of the NVH is that they use morphological variation as a proxy for niche variation, ignoring the role of behavior and complex phenotype-function relationships. Here, we used diet data to directly estimate niche variation among individuals. Consistent with the NVH, we show that more generalized populations also exhibit more niche variation. This trend is quite general, appearing in all five case studies examined: three-spine stickleback, Eurasian perch, Anolis lizards, intertidal gastropods, and a community of neotropical frogs. Our results suggest that generalist populations may tend to be more ecologically variable. Whether this translates into greater genetic variation, evolvability, or ecological stability remains to be determined.

  • 91. Borg, Hans
    et al.
    Andrén, Cecilia
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Sundbom, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Wilander, Anders
    Wällstedt, Teresia
    Episodförsurning - Underlag till Naturvårdsverkets handbok för kalkning av sjöar och vattendrag.2007Report (Other (popular scientific, debate etc.))
  • 92.
    Boström, Bengt
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Brunberg (Pettersson), Anna-Kristina
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Ahlgren, Ingemar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Seasonal dynamics of a cyanobacteria-dominated microbial community in surface sediments of a shallow, eutrophic lake1989In: Aquatic Sciences, Vol. 5, p. 153-178Article in journal (Refereed)
  • 93. Bouillon, S
    et al.
    Frankignoulle, M
    Dehairs, F
    Velimirov, B
    Eiler, A
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Abril, G
    Inorganic and organic carbon biogeochemistry in the Gautami Godavari estuary (Andhra Pradesh, India) during pre-monsoon: the local impact of extensive mangrove forests.2003In: Global Biogeochemical Cycles, Vol. 17, p. 1114-Article in journal (Refereed)
  • 94.
    Brunberg, Anna-Kristina
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Contribution of bacteria in the mucilage of Microcystis spp. (Cyanobacteria) to benthic and pelagic bacterial production in a hypereutrophic lake1999In: FEMS MICROBIOLOGY ECOLOGY, ISSN 0168-6496, Vol. 29, no 1, p. 13-22Article in journal (Refereed)
    Abstract [en]

    The mucilage of cyanobacteria represents a unique habitat for both water column and sediment bacteria. In Lake Vallentunasjon, Sweden, the pelagic Microcystis-associated bacteria constituted 19-40% of the total bacterial abundance, and their contribution

  • 95.
    Brunberg, Anna-Kristina
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Microbial activity and phosphorus dynamics in eutrophic lake sediments enriched with Microcystis colonies1995In: Freshwater Biology, Vol. 35, p. 541-555Article in journal (Refereed)
  • 96.
    Brunberg, Anna-Kristina
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Blomqvist, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Benthic overwintering of Microcystis colonies under different environmental conditions.2002In: J. Plankton Res., Vol. 24, p. 1247-1252Article in journal (Refereed)
  • 97.
    Brunberg, Anna-Kristina
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Blomqvist, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Ontogeny of lake ecosystems in the Forsmark area - chemical analysis of deep sediment cores2003Report (Other academic)
  • 98.
    Brunberg, Anna-Kristina
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Blomqvist, Peter
    Quantification of anthropogenic threats to lakes in a lowland county of central Sweden2001In: Ambio, ISSN 0044-7447, Vol. 30, no 3, p. 127-134Article in journal (Refereed)
    Abstract [en]

    An evaluation of the negative effects caused by anthropogenic influence on lake ecosystems was performed, using data from 143 catchments in

  • 99.
    Brunberg, Anna-Kristina
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Blomqvist, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology. limnologi.
    Recruitment of Microcystis (Cyanophyceae) from lake sediments: the importance of littoral inocula2003In: J. Phycol., Vol. 39, p. 58-63.Article in journal (Refereed)
  • 100.
    Brunberg, Anna-Kristina
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Blomqvist, Peter
    Rydin, Emil
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Limnology.
    Contrasting ontogeny among ephemeral hardwater lakes as revealed by sediment P-fractionation2002In: Archiv fur Hydrobiologie, Vol. 153, no 3, p. 491-502Article in journal (Refereed)
1234567 51 - 100 of 473
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