Results 11 to 20 of about 548 (120)

Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]

Ecol Evol
Predator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S, Raoult V, Slip DJ, Mas F, Laporta M, Pereyra I, Silveira S, Harcourt RG.   +7 more
europepmc   +2 more sources

Phylogeography of Cold Water Soft Coral Alcyonium spp. (Anthozoa, Octocorallia: Alcyonacea) Between South America and the West Antarctic Peninsula. [PDF]

Ecol Evol
Our study on genetic diversity in Alcyonium species across the southern South American‐Antarctic region revealed significant genetic divergence, indicating long‐term persistence and adaptation to varied environmental conditions since their diversification approximately 41.1 million years ago, coinciding with the opening of the Drake Passage and the ...
Bruning P, Archaumbault P, Garrido I, de Lecea AM, Morley SA, Brante A, Ortiz P, Cárdenas L.   +7 more
europepmc   +2 more sources

Modeling nature-based restoration potential across aquatic-terrestrial boundaries. [PDF]

Conserv Biol
Abstract Today, few watersheds remain untouched by global change processes arising from climate warming, impoundments, channelization, water extraction, pollution, and urbanization. The need for restoration has resulted in a myriad of interventions, generally performed at small scales, which have limited measurable impact in restoring biodiversity and
Wegscheider B, Rideout NK, Monk WA, Gray MA, Steeves R, Baird DJ.   +5 more
europepmc   +2 more sources

Twoline Skiffia's Latency to Exit a Refuge and to Locate Food When Socialising With Invaders and Raising Temperatures. [PDF]

Ecol Evol
Native twoline skiffia's behaviour in response to increasing temperatures and coexistence with invasive guppies was assessed and results uncovered potential benefits for the native fish, including quicker emergence from shelters and more efficient food location when associating with invasive species.
Santiago-Arellano A, Alcocer J, de la Barrera E, Camacho-Cervantes M.   +3 more
europepmc   +2 more sources

Recovery and Degradation Drive Changes in the Dispersal Capacity of Stream Macroinvertebrate Communities. [PDF]

Glob Chang Biol
Freshwater ecosystems across Europe are recovering unevenly despite restoration efforts, partly due to the limited ability of many species to disperse. Using a dataset of over 1300 time series, we found that improved ecological quality often leads to gains in macroinvertebrate species with strong dispersal capacities, while degrading sites lose these ...
Cano-Barbacil C, Sinclair JS, Welti EAR, Haase P.   +3 more
europepmc   +2 more sources

Fish diversity of Colombian Andes-Amazon streams at the end of conflict is a reference for conservation before increased land use. [PDF]

Ecol Evol
Aquatic ecosystems in the Andes‐Amazon transition zone of Colombia are now at high risk due to expanded human activities after peace agreements in 2016 ended armed conflict. Fish communities exhibit altitudinal biodiversity gradients that are consistent in space and time, and that need to be accounted for conservation and management considerations. Our
Bogota-Gregory JD, Jenkins DG, Acosta-Santos A, Agudelo Córdoba E.   +3 more
europepmc   +2 more sources

Distribución espaciotemporal del potencial reproductivo del stock de hembras de langostino colorado (Pleuroncodes monodon) en la zona centro-sur de Chile

Ciencias Marinas, 2023
Pleuroncodes monodon es 1 de las 3 especies que sustentan las pesquerías demersales de crustáceos en Chile, con niveles de desembarque que han mostrado amplias variaciones y una muy lenta recuperación en la última década.
Mónica E Barros, Rubén Alarcón, Hugo Arancibia   +2 more
doaj   +1 more source

Simulating drying and human impacts on river networks to evaluate biological quality indices performance through the lens of metacommunity theory

Journal of Applied Ecology, Volume 63, Issue 5, May 2026.
This work constitutes a first step towards developing simulation‐based assessments that incorporate catchment drying patterns to support biomonitoring of drying river networks. Our approach can inform stakeholders when current methods are likely to fail and contribute to decision‐making on whether adapting current methods is possible or developing new ...
Zeynep Ersoy, David Cunillera‐Montcusí, Martí Piñero‐Fernández, Miguel Cañedo‐Argüelles, María Mar Sánchez‐Montoya, Núria Bonada, Núria Cid   +6 more
wiley   +1 more source

Macrofauna community patterns in a Chiloe Island channel used intensely for aquaculture: the ecological status of its benthic environment

Revista Chilena de Historia Natural, 2021
Background It is known that aquaculture may produce negative environmental effects on marine ecosystems. Southern Chile is one of the most important salmon and mussel-producing areas in the world.
Eduardo Hernández-Miranda, Romina Estrada, Poliana Strange, Rodrigo Veas, M. Cristina Krautz, Renato A. Quiñones   +5 more
doaj   +1 more source

Exploring ecohydrology through the lens of local fishers in the Bolivian Amazon

Ecosphere, Volume 17, Issue 4, April 2026.
Abstract The natural flow regimes of Andean‐Amazon tributaries play a vital role in sustaining their rich biodiversity and productive local fisheries, but ongoing and proposed alteration of river flow regimes by large dams threatens to negatively impact river ecosystems. Despite its importance, our understanding of how hydrologic variability influences
Lina G. Terrazas‐Villarroel, Jochen Wenninger, Marcelo Heredia‐Gómez, Nick van de Giesen, Michael E. McClain   +4 more
wiley   +1 more source