Results 151 to 160 of about 1,324,789 (341)

Budgeting suspended sediment fluxes in tropical monsoonal watersheds with limited data: the Lake Tana basin

Journal of Hydrology and Hydromechanics, 2018
Soil erosion decreases soil fertility of the uplands and causes siltation of lakes and reservoirs; the lakes and reservoirs in tropical monsoonal African highlands are especially affected by sedimentation.
Zimale Fasikaw A., Moges Mamaru A., Alemu Muluken L., Ayana Essayas K., Demissie Solomon S., Tilahun Seifu A., Steenhuis Tammo S.   +6 more
doaj   +1 more source

The significance of the pycnocline in tropical lakes [PDF]

, 1972
The vertical temperature profile is a poor indicator of sratification in most tropical lake. Data from Lake Bunyonyi, Uganda, showed, however, that the density profile highlighted discontinuity layers whieh were not obvious from the temperature profile ...
Denny, P.
core  

Preface: Recent advances in tropical lake research

Hydrobiologia, 2020
A. Ramírez, M. Caballero, G. Vázquez, C. Colón-Gaud   +3 more
semanticscholar   +1 more source

Temperature Impacts on Mating and Oviposition of the Emerald Ash Borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae)

Entomologia Experimentalis et Applicata, EarlyView.
The emerald ash borer (EAB), Agrilus planipennis, threatens ash trees in North America and Europe. To assess the role of temperature on EAB reproduction, we reared adults at one of four temperatures (12°C, 15°C, 18°C, and 21°C) and measured reproductive success.
Kenneth W. Dearborn, Daegan J. G. Inward, Sandy M. Smith, Chris J. K. MacQuarrie   +3 more
wiley   +1 more source

VARIACIONES NICTEMERALES DE ALGUNAS VARIABLES CLIMÁTICAS, FÍSICAS Y QUÍMICAS EN UNA LAGUNA SOMERA EN GUATAPÉ (ANTIOQUIA), COLOMBIA NICTEMERAL VARIATION OF SOME CLIMATIC, PHYSICAL AND CHEMICAL VARIABLES ON SMALL LAKE IN GUATAPÉ (ANTIOQUIA), COLOMBIA

Actualidades Biológicas, 2008
Se evaluó la variación nictemeral de algunas variables climáticas, físicas y químicas durante dos días de muestreos separados por seis meses en dos épocas hidrológicas diferentes en una laguna tropical en el municipio de Guatapé (Antioquia), Colombia ...
Yimmy Montoya-M
doaj  

Bryophytes of Uganda : 1., BBS Tropical Bryology Group expeditions, 1996-1998 ; introduction and collecting sites [PDF]

, 1999
The British Bryological Society Tropical Bryology Group (TBG) undertook three expeditions to Uganda, in Jan-Feb 1996, Jan-Feb 1997 and June-Jul 1998.
Hodgetts, Nick G., Porley, Ron D., Wigginton, Martin J.   +2 more
core  

Assessing soil and native high Andean grassland quality under grazing: A case study from the wet Puna of Peru

Grassland Science, EarlyView.
Abstract High Andean grasslands are vulnerable to changes in their nutritional quality and carbon sequestration capacity, especially in grazing systems. This study evaluated soil quality and native grasses by measuring carbon, physicochemical parameters, and the nutritional quality of predominant species in the wet Puna of Junín, Peru.
Alberto Arias‐Arredondo, Wendy E. Pérez, Sphyros Lastra, Juancarlos Cruz, Richard Solórzano‐Acosta, Cecilia Turín   +5 more
wiley   +1 more source

Geographical distribution of the Pinnated Bittern (Botaurus pinnatus): Update and seasonal movement pattern

Ibis, EarlyView.
The Pinnated Bittern Botaurus pinnatus (Ardeidae) is a widely distributed Neotropical wading bird whose distribution and seasonal status remain poorly resolved. Discrepancies among published literature, citizen science records and the range currently assumed by BirdLife International indicate that both its geographical distribution and migratory ...
Helon Simões Oliveira, Tuany Siqueira‐Silva, Sérgio Roberto Posso, Sidney Feitosa Gouveia   +3 more
wiley   +1 more source

A wild‐caught rosy barb Pethia conchonius in a British urban pond underscores the need to prevent aquarium releases

Journal of Fish Biology, EarlyView.
Abstract A specimen of rosy barb Pethia conchonius of 51 mm standard length, encountered in an urban pond in London, is reported. This small cyprinid is native to lakes and streams in subtropical regions of southern Asia and is commonly sold as an ornamental fish.
Peter J. Barry, Phil I. Davison, Luke Pearson, Gordon H. Copp   +3 more
wiley   +1 more source

Limnology of Botos Lake, a tropical crater lake in Costa Rica.

Revista de biologia tropical, 2001
Botos Lake, located at the Poas Volcano complex (Costa Rica) was sampled eight times from 1994 to 1996 for physicochemical conditions of the water column and phytoplanktonic community composition. Depth was measured at fixed intervals in several transects across the lake to determine its main morphometric characteristics.
openaire   +2 more sources