Results 61 to 70 of about 981 (209)

Temporal variation of phytoplankton in a small tropical crater lake, Costa Rica

Revista de Biología Tropical, 2010
The temporal variation in lake’s phytoplankton is important to understand its general biodiversity. For tropical lakes, it has been hypothesized that they follow a similar pattern as temperate ones, on a much accelerated pace; nevertheless, few case ...
Gerardo Umaña-Villalobos
doaj  

Hydrochemistry, ostracods and diatoms in a deep, tropical, crater lake in Western Mexico

Journal of Limnology, 2013
Crater lakes are sensitive to natural and anthropogenic environmental changes and it is important to define and understand their current status in order to evaluate past changes related to climate variability and future ones associated with modern global
Margarita Caballero, Alejandro Rodriguez, Gloria Vilaclara, Beatriz Ortega, Priyadarsi Roy, Socorro Lozano-García   +5 more
doaj   +1 more source

Andean drought and glacial retreat tied to Greenland warming during the last glacial period

Nature Communications, 2020
How the abrupt warming events recorded in Greenland ice cores during the last glacial cycle have influenced the tropical climate is not well known. Here the authors present new lake sediment data from the Peruvian Andes that shows that these events ...
Arielle Woods, Donald T. Rodbell, Mark B. Abbott, Robert G. Hatfield, Christine Y. Chen, Sophie B. Lehmann, David McGee, Nicholas C. Weidhaas, Pedro M. Tapia, Blas L. Valero-Garcés, Mark B. Bush, Joseph S. Stoner   +11 more
doaj   +1 more source

Improved Cerrado Wetland Mapping Through Seasonal Moisture Metrics, Terrain Information and Semantic Segmentation

Remote Sensing in Ecology and Conservation, EarlyView.
Brazil's Cerrado valley wetlands—swamp savanna and gallery forest—are highly important for the biome's water cycle and carbon storage and are susceptible to degradation from the impacts of land use expansion and the climate crisis. In support of their detailed monitoring and assessment, we developed and tested a transferable mapping approach that ...
Felix Beer, Hugo do Nascimento Bendini, Mateus de Souza Miranda, Vu‐Dong Pham, Leila Maria Garcia Fonseca, Cássia Beatriz Rodrigues Munhoz, Sebastian van der Linden   +6 more
wiley   +1 more source

The Sustainability of Robusta Coffee Under Global Change—A Review

Sustainable Development, EarlyView.
ABSTRACT This contribution reviews the scientific evidence concerning climate resiliency claims as well as sustainability issues for robusta coffee (Coffea canephora), focusing on: climate change analyses, climate parameters, soil water, and farming inputs, especially irrigation and synthetic fertilizer use.
Aaron P. Davis, Akshay Dashrath, Justin Moat   +2 more
wiley   +1 more source

Distribution and fluctuations of backswimmers (Notonectidae) in a tropical shallow lake and predation on microcrustaceans

Brazilian Journal of Biology
Notonectids are widely distributed in freshwaters and can prey on zooplankton in temperate lakes. However, its role in structuring the zooplankton community is unknown in tropical lakes.
A. R. Domingos, M. S. Arcifa
doaj   +1 more source

RETRACE Project: How to Enhance Resilience to Climate Risks in Pacific and Arctic Indigenous Communities?

Sustainable Development, EarlyView.
ABSTRACT Risk management has evolved to analyze risks in a systemic way, integrating local knowledge with the abstract concept of resilience, which is now an imperative for vulnerable and exposed communities. However, existing decision‐support tools are mainly focused on technical‐functional aspects and, although based on rigorous and scientific ...
Pascal Emanuel Egli, Guangqing Chi, Hugo Comes, Erika Gavenus, Emma Lea Wheeler, Martina Calovi, Jeanne Gherardi, Tomasz Opach, Sabrina Scherzer, Damien Serre, Charlotte Heinzlef   +10 more
wiley   +1 more source

Framing the unknowable: The role of language and frame multiplicity in early‐stage startup pitches

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary Early‐stage startup pitches must make largely unknowable futures plausible. As such, they bear a rhetorical burden. This study theorizes how multiple frames jointly shape this burden and, consequently, affect investor evaluations. Specifically, it considers how future growth frames interact with concreteness and novelty frames.
Ann‐Sophie Kowalewski
wiley   +1 more source

Thermal structure of the Poraquê lake, Central Amazonian, Brazil = Estrutura térmica do lago Poraquê, Amazônia Central, Brasil

Acta Scientiarum: Biological Sciences, 2011
Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification.
Fabio Marques Aprile
doaj  

Correlates of Zooplankton Beta Diversity in Tropical Lake Systems

PLoS ONE, 2014
The changes in species composition between habitat patches (beta diversity) are likely related to a number of factors, including environmental heterogeneity, connectivity, disturbance and productivity. Here, we used data from aquatic environments in five Brazilian regions over two years and two seasons (rainy and dry seasons or high and low water level
Lopes, P.M., Bini, L.M.S, Declerck, Steven A.J., Farjalla, V.F., Vieira, L.C.G., Bonecker, C.C., Lansac-Tôha, F.A., Esteves, F.A., Bozelli, R.L.   +8 more
openaire   +5 more sources