Results 141 to 150 of about 1,324,789 (341)

Spatiotemporal mapping of lakes across climatic zones using a node-based random forest approach (2000–2023)

open access: yesEcological Indicators
Wetlands are vital for biodiversity conservation and the provision of critical ecosystem services, yet lakeshore wetlands worldwide are increasingly threatened by climate change and human disturbances.
Fangrui Zhao   +4 more
doaj   +1 more source

Assessment of predictive models for chlorophyll-a concentration of a tropical lake

open access: yesBMC Bioinformatics, 2011
BackgroundThis study assesses four predictive ecological models; Fuzzy Logic (FL), Recurrent Artificial Neural Network (RANN), Hybrid Evolutionary Algorithm (HEA) and multiple linear regressions (MLR) to forecast chlorophyll- a concentration using ...
Sorayya Malek   +4 more
semanticscholar   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

open access: yesBoreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo   +5 more
wiley   +1 more source

Authoring Terrestrial Planets with Diffusion Models

open access: yesComputer Graphics Forum, EarlyView.
Abstract To support the design and subsequent generation of terrestrial planets for use in the creative media, we propose a solution that employs a generative model trained on satellite data from planetary bodies with a defined solid surface, such as the Earth and Mars.
Oliver Borg   +6 more
wiley   +1 more source

Florida hurricanes and tropical storms: 1871-1993, an historical review [PDF]

open access: yes, 1994
In recent times, from 1871-1993, nearly 1,0OO tropical cyclones of tropical storm or hurricane intensity have s cur red in the North Atlantic, Caribbean Sea, and Gulf of Mexico.
Doehring, Fred   +2 more
core  

Informal supply chains of wild meat from rural Amazonia and food security in an urban center

open access: yesConservation Biology, EarlyView.
Abstract Iquitos, the most populated city in the Peruvian Amazon, is a hub in the regional supply chain of wild meat and supplies urban consumers. Studies on wild meat consumption have focused primarily on markets, limiting the scope of species considered to those that are economically valuable and potential inferences from those data.
Fiorella Briceño Huerta   +3 more
wiley   +1 more source

Trophic interactions within the microbial food web in a tropical floodplain lake (Laguna Bufeos,Bolivia)

open access: yesRevista de Biología Tropical, 2005
Whether the primary role of bacterioplankton is to act as "remineralizers" of nutrients or as direct nutritional source for higher trophic levels will depend on factors controlling their production and abundance.
Danny Rejas   +2 more
doaj  

Does nature shape risk preferences? Evidence from Chile, Norway, and Tanzania

open access: yesEconomic Inquiry, Volume 63, Issue 2, Page 568-590, April 2025.
Abstract Does exposure to a more risky environment affect risk preferences? Going beyond single‐case study evidence, we report results from five surveys conducted in three countries and link this with administrative data to study whether a link between exposure and preferences is detectable and widespread. We find no evidence for endogenous preferences
Florian Diekert, Robbert‐Jan Schaap
wiley   +1 more source

Structure and dynamics of phytoplankton in an Amazon lake, Brazil

open access: yesRevista de Biología Tropical, 2010
Natural lake systems represent important reservoirs for residential water supply, fish production, recreational activities and enjoyment of their natural beauty. Nevertheless, human impacts may affect their health status resulting in degradation and loss
Ise de Goreth Silva   +3 more
doaj  

Predation on Artificial Caterpillars Varies With Vertical Stratification but Not Light Gradients in a Sugar Maple Temperate Forest

open access: yesEntomologia Experimentalis et Applicata, EarlyView.
Predation pressure varies vertically, with highest arthropod predation in the understory and highest bird predation in the canopy. Light availability differs across vertical strata, but predation patterns are more strongly influenced by height and forest structure than by light gradients.
Mahsa Hakimara, Emma Despland
wiley   +1 more source

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