Results 41 to 50 of about 146,591 (359)
Aquaculture in tropical Mexican lakes and dams: achievements and perspectives [PDF]
, 2000 Mexico, with highly diverse physiography, geology, soils and climate, is a country with a broad mosaic of aquatic ecosystems within 320 watersheds.
Carranza, Jorge, Lopez, Martin
core
Neotropical Bird Migration During The Ice Ages: Orientation And Ecology [PDF]
, 1996 Reconstruction of breeding habitat of North American Neotropical migrants 18,000 years ago and 9,000 years ago indicated major shifts in both location and composition of plant communities relative to present conditions.
Webb, T., III +1 more
core +2 more sources
Archaeology in Oceania, EarlyView.ABSTRACT This paper reports on the excavation of a cache of stone artefacts, buried on the bank of a waterhole or ‘billabong’ in central western Queensland. This is an extremely rare find, and yet it is the second such site to be reported within less than a 10 km radius.
Yinika L. Perston +5 more
wiley +1 more source
Assessing seasonal nitrogen export to large tropical lakes
Science of The Total Environment, 2020 Rivers are exporting increasing amounts of nitrogen (N) to lakes, which is leading to eutrophication. However, the seasonality apparent in nutrient loading, especially in tropical areas, is thus far only partially understood. This study aims to better understand the seasonality and the sources of dissolved inorganic nitrogen (DIN) inputs from sub ...
Goshu, Goraw +4 more
openaire +3 more sources
Climatic Effects on Lake Basins. Part I: Modeling Tropical Lake Levels [PDF]
Journal of Climate, 2011 Abstract The availability of satellite estimates of rainfall and lake levels offers exciting new opportunities to estimate the hydrologic properties of lake systems. Combined with simple basin models, connections to climatic variations can then be explored with a focus on a future ability to predict changes in storage volume for water ...
James A. Carton +2 more
openaire +1 more source
Effects of climate on size structure and functioning of aquatic food webs [PDF]
, 2010 In aquatic food webs, the role of body size is notoriously strong. It is also well known that temperature has an effect on body size. For instance, Bergmann’s rule states that body size increases from warm to cold climates.
Lacerot, G.
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Animal Research and One Health, EarlyView.The effects of restricted nursing (RN) and the administration of a bovine appeasing substance (BAS) on days −8 and 0 in relation to weaning were evaluated. Both strategies were effective in improving the growth performance of beef calves. Regarding welfare, BAS ‐especially on day 0‐ was more effective than RN.
Denise E. Mussalafo +8 more
wiley +1 more source
Diurnal sampling reveals significant variation in CO2 emission from a tropical productive lake
Brazilian Journal of BiologyIt is well accepted in the literature that lakes are generally net heterotrophic and supersaturated with CO2 because they receive allochthonous carbon inputs. However, autotrophy and CO2undersaturation may happen for at least part of the time, especially
PCJ Reis, FAR Barbosa
doaj +1 more source
Temporal and spatial variations in phytoplankton productivity in surface waters of a warm-temperate, monomictic lake in New Zealand [PDF]
, 2010 Surface phytoplankton productivity measurements were carried out in morphologically complex Lake Rotoiti with the objective of defining variations between sites and seasons, and the dominant environmental drivers of these variations.
Hamilton, David P. +2 more
core +1 more source
Zooplankton in Lake Coatetelco, a Eutrophic Shallow Tropical Lake in Mexico [PDF]
Journal of Freshwater Ecology, 2003 ABSTRACT Zooplankton from Lake Coatetelco, a shallow tropical reservoir in Morelos State, Mexico, was surveyed monthly through one year. The entire zooplankton community was represented by only five species, with the calanoid Arctodiaptomus dorsalis overwhelmingly dominant throughout the year.
J. L. Gómez-Márquez +3 more
openaire +1 more source