Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Fred Wanda"'
Publikováno v:
Uganda Journal of Agricultural Sciences; Vol. 20 No. 2 (2020); 23-35
This study determined the concentration of oil and grease and inferred its impacts on algae, invertebrates and fish. Water samples were collected in April and September from 2012 to 2018 at the upstream and downstream transects and in the reservoir,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::034fdddab510f43292fb6cb1e00e8c11
https://doi.org/10.4314/ujas.v20i2.3
https://doi.org/10.4314/ujas.v20i2.3
Autor:
Fred Wanda Masifwa, Peter Beine, James Ogwang, Moureen Matuha, Brenda Amondito, Racheal Nabwire
Publikováno v:
Uganda Journal of Agricultural Sciences; Vol. 20 No. 1 (2020); 57-71
The objective of this study was to quantify the coverage of Kariba weed (Salvinia molesta) on lakes Kyoga and Kwania and document the environmental and socio-economic impacts associated with its infestation. Data on weed infestation status was collec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edc3877e7e84fab51eb1de6d73337a51
https://www.ajol.info/index.php/ujas/article/view/218031
https://www.ajol.info/index.php/ujas/article/view/218031
Autor:
James P. Cuda, John H. Epler, William A. Overholt, Brian Gidudu, Fred Wanda, Robert S. Copeland
Publikováno v:
Journal of East African Natural History. 101:29-66
A survey of the aquatic weed Hydrilla verticillata was conducted in selected Kenyan and Ugandan lakes, and emerging chironomid adults were collected from samples of Hydrilla and seven other aquatic macrophytes. Hydrilla was absent from Lake Victoria,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32b4a67ea989ad2c0f4aede458515661
https://doi.org/10.2982/028.101.0102
https://doi.org/10.2982/028.101.0102
Autor:
Robert S. Copeland, James P. Cuda, Silvester Wandera, Fred Wanda, Brian Gidudu, William A. Overholt
Publikováno v:
Journal of East African Natural History. 100:113-121
The aquatic macrophyte, Hydrilla verticillata is a serious invasive plant in many countries. In East and Central Africa, H. verticillata is present in some water bodies, but not considered a weed. Hydrilla verticillata leaves collected in this region
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::773472df6678f07463bfeaebf8ee8452
https://doi.org/10.2982/028.100.0107
https://doi.org/10.2982/028.100.0107
Publikováno v:
International Review of Hydrobiology. 95:209-223
Beginning in the mid-1980s Lake Victoria experienced severe eutrophication and it was suggested that deteriorating water quality might lead to a collapse of its fisheries. A series of lake-wide surveys carried out 1999–2001 and 2005–2009 revealed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a32fddfbe7690d54cc3024fec2b98f7
https://doi.org/10.1002/iroh.201011226
https://doi.org/10.1002/iroh.201011226
Publikováno v:
African Journal of Aquatic Science; Vol 38, No 3 (2013)
Climate change may threaten the fisheries of Lake Victoria by increasing density differentials in the water column, thereby strengthening stratification and increasing the intensity and duration of deoxygenation in the deeper waters. Between 1927 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a62ad64cb76e6418249c10546e7f86f
https://www.ajol.info/index.php/ajas/article/view/98027
https://www.ajol.info/index.php/ajas/article/view/98027
Publikováno v:
Nature Precedings
The impacts of global warming have been reported from several deep lakes in the African Rift Valley and in each thermal gradients within the water column have increased thus strengthening already existing oxyclines, below which the water is permanent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b36db83757d2717d93a5f22ab594aa81
https://doi.org/10.1038/npre.2009.3726.1
https://doi.org/10.1038/npre.2009.3726.1