Results 31 to 40 of about 43,983 (161)

Long term changes in aquaculture influence migration, regional abundance, and distribution of an avian species.

open access: yesPLoS ONE, 2023
Agricultural development has been causing changes to the environment and the abundance and distribution of avian species. Agriculture is dynamic with changes in products occurring at large scales over relatively short time periods.
Paul C Burr   +4 more
doaj   +2 more sources

Covariations in ecological scaling laws fostered by community dynamics [PDF]

open access: yesProceedings of the National Academy of Sciences, 114(40), 10672-10677, 2017
Scaling laws in ecology, intended both as functional relationships among ecologically-relevant quantities and the probability distributions that characterize their occurrence, have long attracted the interest of empiricists and theoreticians. Empirical evidence exists of power laws associated with the number of species inhabiting an ecosystem, their ...
arxiv   +1 more source

Tiger abundance and ecology in Jigme Dorji National Park, Bhutan

open access: yesGlobal Ecology and Conservation, 2023
Conservation of large carnivores, especially, wild tigers (Panthera tigris) require an accurate population estimate and knowledge of their ecology. Camera traps have been widely used to estimate the population abundance of animals with unique natural ...
Pema Dendup   +3 more
doaj  

Long-term monitoring of the fish community in the Minho Estuary (NW Iberian Peninsula) [PDF]

open access: yesBiodiversity Data Journal
The paper presents an extensive fish sampling dataset spanning a long-term period from 2010 to 2019. The data were collected in Lenta Marina, an upstream area in the Minho Estuary of the NW Iberian Peninsula, which belongs to a LTSER (Long-Term Socio ...
Allan Souza   +11 more
doaj   +3 more sources

The effect of population abundances on the stability of large random ecosystems [PDF]

open access: yesPhys. Rev. E 98, 022410 (2018), 2017
Random matrix theory successfully connects the structure of interactions of large ecological communities to their ability to respond to perturbations. One of the most debated aspects of this approach is the missing role of population abundances. Despite being one of the most studied patterns in ecology, and one of the most empirically accessible ...
arxiv   +1 more source

Emergence of structural and dynamical properties of ecological mutualistic networks [PDF]

open access: yesNature, 500 (449), 2013, 2013
Mutualistic networks are formed when the interactions between two classes of species are mutually beneficial. They are important examples of cooperation shaped by evolution. Mutualism between animals and plants plays a key role in the organization of ecological communities.
arxiv   +1 more source

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

Linearity and Scaling of a Statistical Model for the Species Abundance Distribution [PDF]

open access: yes, 2001
We derive a linear recursion relation for the species abundance distribution in a statistical model of ecology and demonstrate the existence of a scaling solution.
arxiv   +1 more source

High‐frequency and long‐term observations of eDNA from imperiled salmonids in a coastal stream: Temporal dynamics, relationships with environmental factors, and comparisons with conventional observations

open access: yesEnvironmental DNA, 2022
A greater understanding of eDNA behavior in the environment is needed before it can be employed for ecosystem monitoring applications. The objectives of this study were to use autonomous sampling to conduct long‐term, high‐frequency monitoring of the ...
Ryan T. Searcy   +10 more
doaj   +1 more source

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

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