Results 201 to 210 of about 669,313 (269)

A test of the abundant‐center hypothesis for stream fishes

open access: yesEcography, EarlyView.
The abundant‐center hypothesis (ACH) provides a conceptual model for predicting range‐wide distributions of species abundance, suggesting that abundance peaks in the center of the geographic range and declines towards range edges. Empirical studies testing the ACH and its subsequent derivations predominantly occurred in terrestrial systems and reported
Matthew L. W. Zink   +5 more
wiley   +1 more source

Functional and phylogenetic convergence of winter and breeding bird communities in the northeastern US

open access: yesEcography, EarlyView.
Around the world, ecological communities are becoming more similar to one another in a process known as biotic homogenization – an increase in similarity among communities over time. While biotic homogenization has been widely studied among spatial communities, very little attention has been paid to beta diversity between seasonal communities ...
Peter J. Williams, Shannon R. Curley
wiley   +1 more source

Evolutionary trajectories of multiple defense traits across phylogenetic and geographic scales in Vitis

open access: yesEcography, EarlyView.
The processes driving defense trait correlations may vary within and between species based on ecological or environmental contexts. However, most studies of plant defense theory fail to address this potential for shifts in trait correlations across scales.
Carolyn D. K. Graham, Marjorie G. Weber
wiley   +1 more source

Freshwater fish functional diversity shows diverse responses to human activities, but consistently declines in the tropics

open access: yesEcography, EarlyView.
Freshwater environments are intertwined with human activities and the consequence has been environmental degradation and biodiversity loss. Fish provide key ecological and economic benefits, and fish abundance and diversity can be affected by human activities resulting in functional diversity (FD) changes that might scale up to ecosystem impacts ...
Romullo Guimarães de Sá Ferreira Lima   +3 more
wiley   +1 more source

Combined effects of temperature change and natural habitat on the abundance of arthropod trait syndromes in agroecosystems

open access: yesEcography, EarlyView.
Land‐use changes and climatic changes are two entwined stressors on ecosystems. Studies on such interactions often focus on species‐level or region‐specific responses, but fewer have examined differences in responses based on functional traits. Here we examine the influence of natural habitat cover and temperature change on the abundance of all ...
Jessica M. Guezen, Madhur Anand
wiley   +1 more source

Using spatial capture–recapture methods to estimate long‐term spatiotemporal variation of a wide‐ranging marine species

open access: yesEcography, EarlyView.
Determining population status to inform mitigation of anthropogenic threats requires statistical approaches that investigate spatial and temporal variation. In the face of climate change it is increasingly important to differentiate between changes in population size and redistributions of populations.
Georgina Whittome   +4 more
wiley   +1 more source

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