Results 51 to 60 of about 1,003 (94)

The skull evolution of oviraptorosaurian dinosaurs: the role of niche partitioning in diversification [PDF]

open access: yesJournal of Evolutionary Biology, 2019
AbstractOviraptorosaurs are bird‐like theropod dinosaurs that thrived in the final pre‐extinction ecosystems during the latest Cretaceous, and the beaked, toothless skulls of derived species are regarded as some of the most peculiar among dinosaurs.
Ma, Waisum   +3 more
openaire   +4 more sources

Ecological niche partitioning in two Pacific puffins

open access: yesMarine Ecology Progress Series, 2023
Ecological theory predicts that closely related species can coexist if they segregate in space, time, or diet to reduce competitive overlap when resources are limited. These differences in ecological niche are presumably driven by concomitant differences in morphology.
A Shoji   +6 more
openaire   +1 more source

Niche partitioning by resource size in the gut microbiome

open access: yes
Niche partitioning promotes diversity of the human gut microbiota. However, the molecular basis of resource specialization and niche separation in the gut remains poorly understood. Here we show that structural differences in glycan transporters drive members of the genus Bacteroides, common human gut commensals, to specialize on distinct chain lengths
Stefany Moreno-Gamez   +5 more
openaire   +3 more sources

Niche Partitioning of Feather Mites within a Seabird Host, Calonectris borealis. [PDF]

open access: yesPLoS ONE, 2015
According to classic niche theory, species can coexist in heterogeneous environments by reducing interspecific competition via niche partitioning, e.g. trophic or spatial partitioning.
Laura M Stefan   +5 more
doaj   +1 more source

A Hierarchical Niche Structure, not Niche Partitioning, Organizes a Seasonally Dynamic Flea Community

open access: yesEcology and Evolution
Interactions in single-host–parasite systems provide a tractable framework for understanding the ecological mechanisms that maintain community stability. Here, we integrated network topology, multidimensional niche analysis, and functional group delineation to investigate the adaptive strategies and assembly rules of a 12-species flea community on ...
Rui Geng   +5 more
openaire   +2 more sources

Effects of sexual dimorphism and landscape composition on the trophic behavior of Greater Prairie-Chicken. [PDF]

open access: yesPLoS ONE, 2013
Partitioning of ecological niche is expected in lekking species that show marked sexual size dimorphism as a consequence of sex-specific ecological constraints. However, niche partitioning is uncertain in species with moderate sexual dimorphism.
Beatriz Blanco-Fontao   +4 more
doaj   +1 more source

Temporal Study of Environmental DNA and Acoustic Data Reveals Coexistence of Sympatric Bat Species in a North American Ecosystem

open access: yesEnvironmental DNA
Bats are a species‐rich mammalian order that provide a host of ecosystem services, but presently face threats from habitat loss, disease, climate change, and insect declines.
Vrinda M. Suresh   +3 more
doaj   +1 more source

Niche partitioning among sexual and unisexual Ambystoma salamanders

open access: yesEcosphere, 2016
Organisms that have ecologically similar sexual and asexual forms present an evolutionary puzzle, as theory predicts that eventually one form should eliminate the other.
Katherine R. Greenwald   +2 more
doaj   +1 more source

Requirements for plant coexistence through pollination niche partitioning [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2015
Plant–pollinator interactions are often thought to have been a decisive factor in the diversification of flowering plants, but to be of little or no importance for the maintenance of existing plant diversity. In a recent opinion paper, Pauw (2013 Trends Ecol. Evol . 28, 30–37.
openaire   +3 more sources

How individual variation shapes ecological niches in two Pipistrellus bat species

open access: yesCommunications Biology
Niche partitioning is a crucial mechanism explaining species coexistence and biodiversity; however, the role of individual variation is less understood. As global changes reshuffle species communities, understanding coexistence mechanisms is vital.
Markus Milchram   +9 more
doaj   +1 more source

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