Results 21 to 30 of about 65,254 (294)
The dynamic trophic niche of an island bird of prey. [PDF]
Ecol Evol, 2020 AbstractOptimal foraging theory predicts an inverse relationship between the availability of preferred prey and niche width in animals. Moreover, when individuals within a population have identical prey preferences and preferred prey is scarce, a nested pattern of trophic niche is expected if opportunistic and selective individuals can be identified ...
Balza U +5 more
europepmc +6 more sources
Frontiers in Marine Science, 2022 Sciaenid fishes are usually associated with large freshwater inputs and are the most important economic fish on the coastal shelf off mainland China.
Jing Wang +12 more
doaj +1 more source
Human disturbance increases trophic niche overlap in terrestrial carnivore communities. [PDF]
Proc Natl Acad Sci U S A, 2020 Significance Niche theory posits that species must limit overlap in the use of space, time, or resources to minimize competition. However, human disturbances are rapidly altering ecosystems with uncertain consequences for niche partitioning. Dietary niche partitioning is the primary way many species limit interspecific competition, and it is ...
Manlick PJ, Pauli JN.
europepmc +4 more sources
Sources of intraspecific variation in the isotopic niche of a semi-aquatic predator in a human-modified landscape [PDF]
PeerJ, 2023 Intraspecific variation modulates patterns of resource use by species, potentially affecting the structure and stability of food webs. In human-modified landscapes, habitat disturbance modifies trophic interactions and intraspecific niche variation ...
André Costa Pereira +2 more
doaj +2 more sources
Mechanisms of trophic niche compression: Evidence from landscape disturbance [PDF]
Journal of Animal Ecology, 2018 Abstract Natural and anthropogenic disturbances commonly alter patterns of biodiversity and ecosystem functioning. However, how networks of interacting species respond to these changes remains poorly understood.
Francis J. Burdon +2 more
openaire +2 more sources
Diversity, 2022 Rockfish (genus Sebastes) assemblages can inform mechanisms of coexistence and maintenance of diversity in ecological communities. Coexistence theory characterizes ecological assemblages as following either a deterministic niche differentiation model, or
Andrew D. Suchomel, Mark C. Belk
doaj +1 more source
Reductions in the dietary niche of southern sea otters (Enhydra lutris nereis) from the Holocene to the Anthropocene. [PDF]
, 2020 The sea otter (Enhydra lutris) is a marine mammal hunted to near extinction during the 1800s. Despite their well-known modern importance as a keystone species, we know little about historical sea otter ecology.
Elliott Smith, Emma A +7 more
core +1 more source
Trophic strategies explain the ocean niches of small eukaryotic phytoplankton [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2022 A large fraction of marine primary production is performed by diverse small protists, and many of these phytoplankton are phagotrophic mixotrophs that vary widely in their capacity to consume bacterial prey. Prior analyses suggest that mixotrophic protists as a group vary in importance across ocean environments, but the mechanisms ...
Kyle F. Edwards +4 more
openaire +2 more sources
Frontiers in Ecology and Evolution, 2021 According to the niche variation hypothesis (NVH), the populations with wider niches are phenotypically more variable than those with narrow niches. Giller expanded the NVH, suggesting that the niche width, morphological variation, and genetic diversity ...
Wenjing Li +7 more
doaj +1 more source
Determining trophic niche width: a novel approach using stable isotope analysis [PDF]
, 2004 1. Although conceptually robust, it has proven difficult to find practical measures of niche width that are simple to obtain, yet provide an adequate descriptor of the ecological position of the population examined. 2.
Adams, C.E. +4 more
core +1 more source