Results 11 to 20 of about 1,090,945 (335)

Rules of thumb for conservation of metapopulations based on a stochastic winking-patch model [PDF]

open access: yes, 2001
From a theoretical viewpoint, nature management basically has two options to prolong metapopulation persistence: decreasing local extinction probabilities and increasing colonization probabilities. This article focuses on those options with a stochastic,
Etienne, R.S., Heesterbeek, J.A.P.
core   +3 more sources

Parasitological findings and antiparasitic treatment of captive Jaguarundis Herpailurus yagouaroundi (Carnivora: Felidae) in a conservation center in Brazil

open access: yesJournal of Threatened Taxa, 2018
Ex situ management of wildlife provides a possibility for species maintenance, research development and environmental education.  But as captive facilities are usually much smaller than the area occupied by a species in the natural habitat, cleaning ...
Nárjara Veras Grossmann   +3 more
doaj   +1 more source

Vertebrates on the brink as indicators of biological annihilation and the sixth mass extinction

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance The ongoing sixth mass extinction may be the most serious environmental threat to the persistence of civilization, because it is irreversible.
G. Ceballos, P. Ehrlich, P. Raven
semanticscholar   +1 more source

Recent responses to climate change reveal the drivers of species extinction and survival

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance The response of species to climate change is of increasingly urgent importance. Here, we address the specific changes in climate that were associated with recent population extinctions, using data from 538 plant and animal species ...
Cristian Román‐Palacios, J. Wiens
semanticscholar   +1 more source

Environmental enrichment facilitates cocaine-cue extinction, deters reacquisition of cocaine self-administration and alters AMPAR GluA1 expression and phosphorylation [PDF]

open access: yes, 2017
This study investigated the combination of environmental enrichment (EE) with cocaine‐cue extinction training on reacquisition of cocaine self‐administration.
Dhonnchadha, Brid Aine Nic   +5 more
core   +1 more source

Accelerated modern human–induced species losses: Entering the sixth mass extinction

open access: yesScience Advances, 2015
Humans are causing a massive animal extinction without precedent in 65 million years. The oft-repeated claim that Earth’s biota is entering a sixth “mass extinction” depends on clearly demonstrating that current extinction rates are far above the ...
G. Ceballos   +5 more
semanticscholar   +1 more source

Extinction risk and threats to plants and fungi

open access: yesPlants, People, Planet, 2020
expansion of efforts toward comprehensive and ongoing assessment of plant and fungal extinction risk.
E. N. Nic Lughadha   +29 more
semanticscholar   +1 more source

The Optical to Mid-infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS, and WISE Surveys [PDF]

open access: yesAstrophysical Journal, 2019
A precise interstellar dust extinction law is critically important to interpret observations. There are two indicators of extinction: the color excess ratio (CER) and the relative extinction.
Shu Wang, Xiaodian Chen
semanticscholar   +1 more source

On Dust Extinction of Gamma-ray Burst Host Galaxies [PDF]

open access: yes, 2008
Although it is well recognized that gamma-ray burst (GRB) afterglows are obscured and reddened by dust in their host galaxies, the wavelength-dependence and quantity of dust extinction are still poorly known.
Kann, D. A.   +5 more
core   +2 more sources

Extinction risk and conservation of the world’s sharks and rays [PDF]

open access: yeseLife, 2013
The rapid expansion of human activities threatens ocean-wide biodiversity. Numerous marine animal populations have declined, yet it remains unclear whether these trends are symptomatic of a chronic accumulation of global marine extinction risk.
N. Dulvy   +22 more
semanticscholar   +1 more source

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