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Ahlgren, Ingemar
Alternative names
Publications (8 of 8) Show all publications
Dadebo, E., Ahlgren, I. & Ahlgren, G. (2005). Maturation, sex ratio and fecundity of the Nile perch, Lates niloticus (L.) (Pisces: Centropomidae) in Lake Chamo, Ethiopia. SINET: Ethiop. J. Sci., 28(2), 151-160
Open this publication in new window or tab >>Maturation, sex ratio and fecundity of the Nile perch, Lates niloticus (L.) (Pisces: Centropomidae) in Lake Chamo, Ethiopia
2005 (English)In: SINET: Ethiop. J. Sci., ISSN 0379-2897, Vol. 28, no 2, p. 151-160Article in journal (Refereed) Published
Keywords
Fecundity, Lake Chamo, Lates niloticus, maturity, sex ratio
National Category
Ecology
Identifiers
urn:nbn:se:uu:diva-79405 (URN)
Available from: 2006-04-19 Created: 2006-04-19 Last updated: 2011-01-11
Dadebo, E., Ahlgren, G. & Ahlgren, I. (2003). Aspects of reproductive biology of Labeo horie Heckel (Pisces: Cyprinidae) in Lake Chamo, Ethiopia. African Journal of Ecology, 41, 31-38
Open this publication in new window or tab >>Aspects of reproductive biology of Labeo horie Heckel (Pisces: Cyprinidae) in Lake Chamo, Ethiopia
2003 (English)In: African Journal of Ecology, Vol. 41, p. 31-38Article in journal (Refereed) Published
National Category
Ecology
Identifiers
urn:nbn:se:uu:diva-47537 (URN)
Available from: 2006-04-07 Created: 2006-04-07 Last updated: 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
Open this publication in new window or tab >>Factors controlling pelagic and sediment heterotrophic bacterial numbers and production in lakes.
2002 (English)In: Verh. Internat. Verein. Limnol, Vol. 28, p. 792-797Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-44730 (URN)
Available from: 2007-01-29 Created: 2007-01-29 Last updated: 2011-01-13
Ahlgren, G., Ahlgren, I., Hernández, S. & Mejia, M. (2002). Fatty acid quality of seston and its effects on small fish in the lakes Xolotlán and Cocibolca, Nicaragua.. Verh. Internat. Verein. Limnol., 28, 786-791
Open this publication in new window or tab >>Fatty acid quality of seston and its effects on small fish in the lakes Xolotlán and Cocibolca, Nicaragua.
2002 (English)In: Verh. Internat. Verein. Limnol., Vol. 28, p. 786-791Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-44726 (URN)
Available from: 2006-04-03 Created: 2006-04-03 Last updated: 2011-01-13
Ahlgren, I., Eriksson, R., Moreno, L., Pacheco, L., Montenegro-Guillén, S. & Vammen, K. (2001). Pelagic food web interactions in Lake Cocibolca, Nicaragua. Verh. Internat. Verein. Limnol., 27(4), 1740-1746
Open this publication in new window or tab >>Pelagic food web interactions in Lake Cocibolca, Nicaragua
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2001 (English)In: Verh. Internat. Verein. Limnol., Vol. 27, no 4, p. 1740-1746Article in journal (Refereed) Published
National Category
Ecology
Identifiers
urn:nbn:se:uu:diva-41282 (URN)
Available from: 2006-04-03 Created: 2006-04-03 Last updated: 2011-01-14
Hooker, E., Chow-Wong, N., Rivas, K., Erikson, R., Ahlgren, I. & Ahlgren, G. (2001). Primary production of potential fish yield in Lake Cocibolca, Nicaragua. Verh. Internat. Ver. Limnol., 27, 3589-3594
Open this publication in new window or tab >>Primary production of potential fish yield in Lake Cocibolca, Nicaragua
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2001 (English)In: Verh. Internat. Ver. Limnol., Vol. 27, p. 3589-3594Article in journal (Refereed) Published
National Category
Ecology
Identifiers
urn:nbn:se:uu:diva-41283 (URN)
Available from: 2006-04-07 Created: 2006-04-07 Last updated: 2011-01-14
Admassu, D. & Ahlgren, I. (2000). Growth of juvenile tilapia, Oreochromis niloticus L. from Lakes Zwai, Langeno and Chamo (Ethiopian rift valley) based on otolith microincrement analysis. Ecology of Freshwater Fish, 9(3), 127-137
Open this publication in new window or tab >>Growth of juvenile tilapia, Oreochromis niloticus L. from Lakes Zwai, Langeno and Chamo (Ethiopian rift valley) based on otolith microincrement analysis
2000 (English)In: Ecology of Freshwater Fish, Vol. 9, no 3, p. 127-137Article in journal (Refereed) Published
Abstract [en]

Age and growth of juvenile tilapia, Oreochromis niloticus, from Lakes Zwai, Langeno and Chamo (Ethiopia) were studied from microincrements in otoliths. Growth in length was best described by the Gompertz model. Average growth rate of the fish was most rap

Keywords
juvenile Oreochromis niloticus; otolith microincrements; growth; rift valley lakes; Ethiopia
Identifiers
urn:nbn:se:uu:diva-36142 (URN)
Available from: 2006-04-03 Created: 2006-04-03 Last updated: 2011-01-14
Kebede, E., Gebre-Mariam, Z. & Ahlgren, I. (1994). THE ETHIOPIAN RIFT-VALLEY LAKES - CHEMICAL CHARACTERISTICS OF A SALINITY ALKALINITY SERIES. Hydrobiologia, 288(1), 1-12
Open this publication in new window or tab >>THE ETHIOPIAN RIFT-VALLEY LAKES - CHEMICAL CHARACTERISTICS OF A SALINITY ALKALINITY SERIES
1994 (English)In: Hydrobiologia, ISSN 0018-8158, Vol. 288, no 1, p. 1-12Article in journal (Refereed) Published
Abstract [en]

The study on 10 lakes within the Ethiopian Rift Valley during March-May 1991 covered a range of conductivity (K25) between 286 and 49100 muS

Keywords
ALKALINITY, ETHIOPIAN LAKES, NUTRIENTS, RIFT VALLEY, SALINITY
National Category
Ecology
Identifiers
urn:nbn:se:uu:diva-35536 (URN)
Available from: 2006-04-07 Created: 2006-04-07 Last updated: 2011-01-16
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