نتایج جستجو برای: limnology

تعداد نتایج: 890  

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2009
R R A Rocha S M Thomaz P Carvalho L C Gomes

The need for prediction is widely recognized in limnology. In this study, data from 25 lakes of the Upper Paraná River floodplain were used to build models to predict chlorophyll-a and dissolved oxygen concentrations. Akaike's information criterion (AIC) was used as a criterion for model selection. Models were validated with independent data obtained in the same lakes in 2001. Predictor variabl...

2012
Andrew Ford

Accelerated eutrophication of lakes is usually associated with excessive inflows of nutrients such as phosphates, nitrates and ammonium. The flow of nutrients into the lake can allow for rapid increase in algae. The alga is relatively short-lived, and the lake soon exhibits high concentration of dead organic matter which starts to decay. The decay process consumes dissolved oxygen in the lower ...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2016
L R Londe E M L M Novo C Barbosa C A S Araujo

Satellite images are an effective tool for the detection of phytoplankton blooms, since they cause striking changes in water color. Bloom intensity can be expressed in terms of chlorophyll-a concentration. Previous studies suggest the use of Landsat TM4/TM3 reflectance ratio to retrieve surface chlorophyll-a concentration from aquatic systems. In this study we assumed that a remote sensing trop...

Journal: :Ecological Informatics 2006
Matthijs Vos Louise E. M. Vet Felix L. Wäckers Jack J. Middelburg Wim H. van der Putten Wolf M. Mooij Carlo H. R. Heip Ellen van Donk

Matthijs Vos⁎, Louise E.M. Vet, Felix L. Wäckers, Jack J. Middelburg, Wim H. van der Putten, Wolf M. Mooij, Carlo H.R. Heip, Ellen van Donk Netherlands Institute of Ecology (NIOO-KNAW), Centre for Estuarine and Marine Ecology, Korringaweg 7, 4401 NT, Yerseke, The Netherlands Netherlands Institute of Ecology (NIOO-KNAW), Centre for Terrestrial Ecology, Boterhoeksestraat 48, 6666 GA, Heteren, The...

2012
Clara Ruiz-González Martí Galí Thomas Lefort Clara Cardelús Rafel Simó Josep M. Gasol V. Balagué I. Forn H. Sarmento A. Gomes

1 Vs. 3 17 May 2012 1 Ms. submitted to Limnology & Oceanography 2 3 4 5 Annual variability in light modulation of bacterial heterotrophic activity in 6 surface northwestern Mediterranean waters 7 8 9 10 Clara Ruiz-González,* Martí Galí, Thomas Lefort, Clara Cardelús, Rafel Simó and 11 Josep M. Gasol 12 Institut de Ciències del Mar-Consejo Superior de Investigaciones Científicas 13 Barcelona, Sp...

2004
ANDREAS BALLOT LOTHAR KRIENITZ KIPLAGAT KOTUT CLAUDIA WIEGAND JAMES S. METCALF GEOFFREY A. CODD STEPHAN PFLUGMACHER

ANDREAS BALLOT*, LOTHAR KRIENITZ, KIPLAGAT KOTUT, CLAUDIA WIEGAND, JAMES S. METCALF, GEOFFREY A. CODD AND STEPHAN PFLUGMACHER LEIBNIZ-INSTITUTE OF FRESHWATER ECOLOGY AND INLAND FISHERIES, DEPARTMENT OF LIMNOLOGY OF STRATIFIED LAKES, ALTE FISCHERHÜTTE 2, D-16775 STECHLIN, GERMANY, KENYATTA UNIVERSITY, BOTANY DEPARTMENT, PO BOX 43844, NAIROBI, KENYA, 2 LEIBNIZ-INSTITUTE OF FRESHWATER ECOLOGY AND ...

2018
Bingchang Tan Hu He Jiao Gu Kuanyi Li

Bingchang Tan, Hu He, Jiao Gu and Kuanyi Li 1 State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, PR China 2 University of Chinese Academy of Sciences, Beijing 100049, PR China 3 Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, PR China 4 College of Fisheries and Life Sci...

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