Results 21 to 30 of about 122 (84)

Exploration Behavior Is Consistent and Associated With Foraging Behavior in Island Songbirds

open access: yesBiotropica, Volume 57, Issue 4, July 2025.
We tested the neophobia threshold hypothesis in six landbird species, including four Darwin's finches. Exploration behavior was consistent over time and contexts, with species exhibiting greater foraging diversity showing higher exploratory tendencies.
Jefferson García‐Loor   +3 more
wiley   +1 more source

Registro de hifomicetos acuáticos en el río Guáquira de la Reserva Ecológica Guáquira (San Felipe, Venezuela)

open access: yesGestión y Ambiente, 2018
En los ecosistemas lóticos prístinos están presentes los hifomicetos acuáticos, que son un grupo de hongos imperfectos microscópicos responsables de la degradación del material vegetal que cae al agua, facilitando su uso en niveles tróficos superiores ...
Rafael Fernández, Gunta Smits
doaj   +1 more source

Two lenses for exploring relationships between seabirds and fishers: Unveiling reciprocal contributions

open access: yesPeople and Nature, Volume 7, Issue 5, Page 1025-1040, May 2025.
Abstract Reciprocal relationships between fishers and marine life have been documented in Indigenous fishing contexts, but there are few case studies that describe the mechanisms of such relationships, and even fewer that explore other contexts, such as that of artisanal fishers in Latin American countries.
Jaime Ojeda   +5 more
wiley   +1 more source

Quality and digestibility of food ingested by various trophic fish groups in the Upper Paraná River floodplain

open access: yesRevista de Biología Tropical, 2011
Determining quality of food ingested and digestibility can be helpful in understanding the mechanisms that determine trophic plasticity, which is the ability of a given species to use a more advantageous food source at a given time.
Anna Christina Esper Amaro de Faria   +1 more
doaj   +2 more sources

Butterfly species vary in sex‐specific sodium accumulation from larval diets

open access: yesEcological Entomology, Volume 50, Issue 1, Page 228-234, February 2025.
Male butterflies accumulate more sodium than females in three butterfly species, especially when larvae were exposed to high dietary sodium concentrations. Sodium bioaccumulation occurred mainly in Low Na treatments and bioexcretion was highest in females on High Na diets.
Luis Y. Santiago‐Rosario   +4 more
wiley   +1 more source

Salamander loss alters montane stream ecosystem functioning and structure through top‐down effects

open access: yesAnimal Conservation, Volume 27, Issue 5, Page 722-735, October 2024.
Salamanders are seriously declining worldwide and, despite being important predators in both aquatic and terrestrial environments, their effects on freshwater ecosystems are virtually unknown. We demonstrated that salamander loss could alter montane stream ecosystem functioning and structure by reducing periphyton accrual, altering algal communities ...
A. Alonso   +4 more
wiley   +1 more source

Feeding en route: Prey availability and traits influence prey selection by an avian predator on migration

open access: yesJournal of Animal Ecology, Volume 93, Issue 9, Page 1176-1191, September 2024.
During fall migration, avivorous raptors and avian prey co‐occur across space and time. We used a novel approach—combining eDNA metabarcoding and eBird data—to investigate predator–prey interactions between an avivorous raptor and co‐occurring avian prey species. This approach revealed prey availability and traits influence raptor‐songbird interactions
Ryan P. Bourbour   +9 more
wiley   +1 more source

A new tool to improve the estimates of interaction rewiring considering the whole community composition

open access: yesMethods in Ecology and Evolution, Volume 15, Issue 8, Page 1438-1449, August 2024.
Abstract Understanding temporal dynamics in ecological networks is crucial to predict their capability to cope with global changes. Despite this, proper quantification of network dynamics still remains a challenge. Temporal dynamics are typically studied using data of interaction networks over time, through the evaluation of interaction turnover and ...
Carmelo Gómez‐Martínez   +1 more
wiley   +1 more source

Diversidad de moluscos y crustáceos acuáticos en tres zonas en la cuenca del río Usumacinta, México

open access: yesRevista Mexicana de Biodiversidad, 2018
Los moluscos y crustáceos son importantes en la transferencia energética a niveles tróficos superiores, además de que indican la condición de los ecosistemas acuáticos.
Cinthia Trinidad-Ocaña   +3 more
doaj   +1 more source

Apex predators can structure ecosystems through trophic cascades: Linking the frugivorous behaviour and seed dispersal patterns of mesocarnivores

open access: yesFunctional Ecology, Volume 38, Issue 6, Page 1407-1419, June 2024.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Current global change scenarios demand knowledge on how anthropogenic impacts affect ecosystem functioning through changes in food web structure. Frugivorous mesocarnivores are a key link in trophic cascades because, while their abundance and behaviour are usually ...
Tamara Burgos   +7 more
wiley   +1 more source

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