uu.seUppsala universitets publikasjoner
Endre søk
Link to record
Permanent link

Direct link
BETA
Drakare, Stina
Publikasjoner (10 av 10) Visa alla publikasjoner
Lindström, E. S., Eiler, A., Langenheder, S., Bertilsson, S., Drakare, S., Ragnarsson, H. & Tranvik, L. J. (2007). Does ecosystem size determine aquatic bacterial richness? Comment. Ecology, 88(1), 252-253
Åpne denne publikasjonen i ny fane eller vindu >>Does ecosystem size determine aquatic bacterial richness? Comment
Vise andre…
2007 (engelsk)Inngår i: Ecology, ISSN 0012-9658, E-ISSN 1939-9170, Vol. 88, nr 1, s. 252-253Artikkel i tidsskrift (Fagfellevurdert) Published
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-10586 (URN)10.1890/0012-9658(2007)88[252:DESDAB]2.0.CO;2 (DOI)
Tilgjengelig fra: 2008-01-28 Laget: 2008-01-28 Sist oppdatert: 2017-12-11
Drakare, S., Lennon, J. J. & Hillebrand, H. (2006). The imprint of the geographical, evolutionary and ecological context on species-area relationships.. Ecology Letters, 9, 215-227
Åpne denne publikasjonen i ny fane eller vindu >>The imprint of the geographical, evolutionary and ecological context on species-area relationships.
2006 (engelsk)Inngår i: Ecology Letters, Vol. 9, s. 215-227Artikkel i tidsskrift (Fagfellevurdert) Published
Identifikatorer
urn:nbn:se:uu:diva-78942 (URN)
Tilgjengelig fra: 2006-03-31 Laget: 2006-03-31 Sist oppdatert: 2011-01-11
Hessen, D. O., Blomqvist, P., Dahl-Hansen, G., Drakare, S. & Lindström, E. S. (2004). Production and food web interactions of Arctic freshwater plankton and responses to increased DOC. Archiv für Hydrobiologie, 159(3), 289-307
Åpne denne publikasjonen i ny fane eller vindu >>Production and food web interactions of Arctic freshwater plankton and responses to increased DOC
Vise andre…
2004 (engelsk)Inngår i: Archiv für Hydrobiologie, ISSN 0003-9136, Vol. 159, nr 3, s. 289-307Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A gradient of dissolved organic carbon (DOC) was added to enclosures in a high Arctic lake (Svalbard, 79 N). The aim was to simulate the effect of increased concentrations of DOC that will be a predicted effect of increased temperature and precipitation. The study aimed to provide information on the overall effects of such increased levels of DOC on the pelagic food-web, as well as the increased attenuation of UV-radiation (UV-R) caused by increased DOC. The biomass development of phytoplankton, heterotrophic bacteria and ciliates from 15. July (shortly after ice-off) to 8. August revealed a consistent pattern across all enclosures. Initial phytoplankton biomass decreased from maxima around 600g Cl-1 towards 50g Cl-1 by the end of July. Similarly, ciliate biomass decreased from ~100 to 5g Cl-1, while heterotrophic bacteria decreased from initially 280 g Cl-1 to biomasses near 100 g Cl-1. Over the same period, zooplankton biomass (almost a monoculture of Daphnia tenebrosa) increased from <40 to some 170g Cl-1. These patterns were reflected also in decreasing absolute production of bacteria and phytoplankton, while production:biomass ratio remained fairly constant. In general, the study demonstrated a very dynamic system over the brief ice-free season, where Daphnia grazing had a strong impact on the unicellular biota. Additions of DOC initially stimulated planktonic production, yet this effect was soon overruled by Daphnia grazing. This stimulating effect could be a result both of increased UV-R attenuation and some growth stimulating effect. Since no corresponding stimulating effect was observed in the bag shielded with Mylar filter to screen off UV-B, the latter cause seems most likely.

Emneord
Arctic, dissolved carbon, UV-radiation, plankton, Daphnia, trophic interactions
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-72419 (URN)10.1127/0003-9136/2004/0159-0289 (DOI)
Tilgjengelig fra: 2008-04-14 Laget: 2008-04-14 Sist oppdatert: 2017-12-14bibliografisk kontrollert
Bergström, A.-K., Jansson, M., Drakare, S. & Blomqvist, P. (2003). Occurence of mixotrophic flagellates in relation to bacterioplankton production, light regime and availability of inorganic nutrients in unproductive lakes with differing humic contents.. Freshwater Biology, 48, 868-877
Åpne denne publikasjonen i ny fane eller vindu >>Occurence of mixotrophic flagellates in relation to bacterioplankton production, light regime and availability of inorganic nutrients in unproductive lakes with differing humic contents.
2003 (engelsk)Inngår i: Freshwater Biology, Vol. 48, s. 868-877Artikkel i tidsskrift (Fagfellevurdert) Published
Identifikatorer
urn:nbn:se:uu:diva-78941 (URN)
Tilgjengelig fra: 2006-03-31 Laget: 2006-03-31 Sist oppdatert: 2011-01-13
Drakare, S., Blomqvist, P., Bergström, A.-K. & Jansson, M. (2003). Relationships between picophytoplankton and their environment along a gradient of lakes of different water colour and nutrient content. Freshwater Biology, 48, 729-740
Åpne denne publikasjonen i ny fane eller vindu >>Relationships between picophytoplankton and their environment along a gradient of lakes of different water colour and nutrient content
2003 (engelsk)Inngår i: Freshwater Biology, Vol. 48, s. 729-740Artikkel i tidsskrift (Fagfellevurdert) Published
Identifikatorer
urn:nbn:se:uu:diva-47538 (URN)
Tilgjengelig fra: 2006-03-31 Laget: 2006-03-31 Sist oppdatert: 2011-01-13
Ahlgren, I. & Drakare, S. (2002). Factors controlling pelagic and sediment heterotrophic bacterial numbers and production in lakes.. Verh. Internat. Verein. Limnol, 28, 792-797
Åpne denne publikasjonen i ny fane eller vindu >>Factors controlling pelagic and sediment heterotrophic bacterial numbers and production in lakes.
2002 (engelsk)Inngår i: Verh. Internat. Verein. Limnol, Vol. 28, s. 792-797Artikkel i tidsskrift (Fagfellevurdert) Published
Identifikatorer
urn:nbn:se:uu:diva-44730 (URN)
Tilgjengelig fra: 2007-01-29 Laget: 2007-01-29 Sist oppdatert: 2011-01-13
Blomqvist, P., Jansson, M., Drakare, S., Bergström, A.-K. & Brydsten, L. (2001). Effects of additions of DOC on pelagic biota in a clearwater system: Results from a whole lake experiment in northern Sweden. Microbial Ecology, 42(3), 383-394
Åpne denne publikasjonen i ny fane eller vindu >>Effects of additions of DOC on pelagic biota in a clearwater system: Results from a whole lake experiment in northern Sweden
Vise andre…
2001 (engelsk)Inngår i: Microbial Ecology, Vol. 42, nr 3, s. 383-394Artikkel i tidsskrift (Fagfellevurdert) Published
Identifikatorer
urn:nbn:se:uu:diva-38519 (URN)
Tilgjengelig fra: 2006-03-31 Laget: 2006-03-31 Sist oppdatert: 2011-01-14
Jansson, M., Bergström, A.-K., Drakare, S. & Blomqvist, P. (2001). Nutrient limitation of bacterioplankton and phytoplankton in humic lakes in northern Sweden. Freshwater Biology, 46(5), 653-666
Åpne denne publikasjonen i ny fane eller vindu >>Nutrient limitation of bacterioplankton and phytoplankton in humic lakes in northern Sweden
2001 (engelsk)Inngår i: Freshwater Biology, Vol. 46, nr 5, s. 653-666Artikkel i tidsskrift (Fagfellevurdert) Published
Emneord
bacterioplankton; humic lakes; nutrient limitation; phytoplankton; whole-lake fertilization
Identifikatorer
urn:nbn:se:uu:diva-36226 (URN)
Tilgjengelig fra: 2007-02-13 Laget: 2007-02-13 Sist oppdatert: 2011-01-13
Bergström, A.-K., Jansson, M., Blomqvist, P. & Drakare, S. (2001). The influence of water colour and effective light climate on mixotrophic phytoflagellates in three small Swedish dystrophic lakes. Verh. Internat. Verein. Limnol., 27, 1861-1865
Åpne denne publikasjonen i ny fane eller vindu >>The influence of water colour and effective light climate on mixotrophic phytoflagellates in three small Swedish dystrophic lakes
2001 (engelsk)Inngår i: Verh. Internat. Verein. Limnol., Vol. 27, s. 1861-1865Artikkel i tidsskrift (Fagfellevurdert) Published
Identifikatorer
urn:nbn:se:uu:diva-38518 (URN)
Tilgjengelig fra: 2006-03-31 Laget: 2006-03-31 Sist oppdatert: 2011-01-14
Jansson, M., Bergström, A.-K., Blomqvist, P. & Drakare, S. (2000). Allochtonous organic carbon and phytoplankton/bacterioplankton production relationships in lakes. Ecology, 81(11), 3250-3255
Åpne denne publikasjonen i ny fane eller vindu >>Allochtonous organic carbon and phytoplankton/bacterioplankton production relationships in lakes
2000 (engelsk)Inngår i: Ecology, Vol. 81, nr 11, s. 3250-3255Artikkel i tidsskrift (Fagfellevurdert) Published
Identifikatorer
urn:nbn:se:uu:diva-41579 (URN)
Tilgjengelig fra: 2007-01-29 Laget: 2007-01-29 Sist oppdatert: 2011-01-14
Organisasjoner