Results 11 to 20 of about 116,839 (261)

Trophic ecology of an abundant predator and its relationship with fisheries [PDF]

open access: yesMarine Ecology Progress Series, 2013
Trophic studies are key components in animal ecology and fisheries research. Although stomach samples are often obtained from fisheries, diet studies that consider the influence of fisheries on dietary results are still lacking. Here, the diet of the draughtboard shark Cephaloscyllium laticeps, an abundant mesopredator in Tasmanian waters, was ...
Barnett, Adam   +3 more
openaire   +4 more sources

The influence of ecological factors on mosquito abundance and occurrence in Galápagos [PDF]

open access: yesJournal of Vector Ecology, 2018
We sampled mosquitoes across 18 sites established at different elevations and stretching from the north to the south of Isla Santa Cruz, Galápagos. Two commonly occurring species, Ae. taeniorhynchus and Cx. quinquefasciatus, were collected along with environmental variables characteristic of the trapping sites to assess their influence on mosquito ...
Patricia G. Parker, Samoa Asigau
openaire   +2 more sources

Parasite abundance and diversity in mammals: correlates with host ecology. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1995
Fecally dispersed parasites of 12 wild mammal species in Mudumalai Sanctuary, southern India, were studied. Fecal propagule densities and parasite diversity measures were correlated with host ecological variables. Host species with higher predatory pressure had lower parasite loads and parasite diversity.
Watve, MG, Sukumar, R
openaire   +3 more sources

Ecological Energetics of an Abundant Aerial Insectivore, the Purple Martin

open access: yesPLoS ONE, 2013
The atmospheric boundary layer and lower free atmosphere, or aerosphere, is increasingly important for human transportation, communication, environmental monitoring, and energy production. The impacts of anthropogenic encroachment into aerial habitats are not well understood.
Jeffrey F. Kelly   +3 more
openaire   +6 more sources

Ecological niche structure and rangewide abundance patterns of species [PDF]

open access: yesBiology Letters, 2013
Spatial abundance patterns across species' ranges have attracted intense attention in macroecology and biogeography. One key hypothesis has been that abundance declines with geographical distance from the range centre, but tests of this idea have shown that the effect may occur indeed only in a minority of cases.
A. Townsend Peterson   +4 more
openaire   +3 more sources

A Perspective on Body Size and Abundance Relationships across Ecological Communities [PDF]

open access: yesBiology, 2020
Recently, several studies have reported relationships between the abundance of organisms in an ecological community and their mean body size (called cross-community scaling relationships: CCSRs) that can be described by simple power functions. A primary focus of these studies has been on the scaling exponent (slope) and whether it approximates −3/4, as
Vojsava Gjoni, Douglas Stewart Glazier
openaire   +4 more sources

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Fractional abundance and the ecology of community structure

open access: yes, 2010
Main body of 10 pages, 3 figures; 4 supplements with 17 pages and 8 ...
Kelly, Colleen K.   +3 more
openaire   +2 more sources

The structure of ant–plant ecological networks: Is abundance enough? [PDF]

open access: yesEcology, 2014
Knowledge of the mechanisms that shape biodiversity is essential to understand the ecological and evolutionary dynamics of interacting species. Recent studies posit that most of the organization of mutualistic networks is shaped by differences in species abundance among interacting species. In this study, we examined the mutualism involving plants with
Thiago J. Izzo   +3 more
openaire   +3 more sources

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

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