Conservation efforts for the African forest elephant have been hindered by how little is known the large animal, according to researchers.
Plants & Animals
Apr 29, 2020
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294
Vietnam features extensive ethnolinguistic diversity and occupies a key position in Mainland Southeast Asia (MSEA). Vietnam, with its borders to China, Laos and Cambodia, has a rich geographical diversity, and ample access ...
Biotechnology
Apr 29, 2020
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5
Reconstructing how many individuals first settled the many small islands in the Pacific and when they arrived remain important scientific questions, as well as an intriguing ones for understanding human history. Human migrations ...
Evolution
Apr 15, 2020
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66
By conducting high-resolution optical spectroscopic observations of a nearby stellar stream known as Pisces–Eridanus, astronomers have unveiled essential information about its chemical nature. Results of the new study are ...
A bird study led by the Australian National University (ANU) provides new understanding of the ways birds and mammals respond to a rapidly warming world.
Plants & Animals
Mar 18, 2020
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342
Microplastics are a growing environmental concern, and the effects of this waste product on coral are highlighted in research published in Chemosphere from an international team of researchers including UConn marine science ...
Environment
Mar 05, 2020
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548
Cities change as they grow—not only by adding area or population but also in a variety of other ways, from the length and width of their roads to economic growth to the distribution of elementary schools. Social scientists ...
Social Sciences
Feb 12, 2020
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66
A new census—carried out by the Greater Virunga Transboundary Collaboration (a coalition of governments, non-profits and conservationists) in 2018—shows that the population of mountain gorillas in Uganda's Bwindi Impenetrable ...
Plants & Animals
Jan 15, 2020
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3
The status of Australian snakes and lizards has deteriorated significantly over the past two decades, with the number of species assessed as threatened nearly doubling from 1993 to 2017.
Ecology
Dec 02, 2019
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71
Population sizes of bank voles are lower in the areas where radiation level in the environment is increased. In her dissertation at the University of Jyväskylä Kati Kivisaari studied the effects of ionizing radiation on ...
Environment
Nov 29, 2019
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19
In population genetics and population ecology, population size (usually denoted N) is the number of individual organisms in a population.
The effective population size (Ne) is defined as "the number of breeding individuals in an idealized population that would show the same amount of dispersion of allele frequencies under random genetic drift or the same amount of inbreeding as the population under consideration." Ne is usually less than N (the absolute population size) and this has important applications in conservation genetics.
Small population size results in increased genetic drift. Population bottlenecks are when population size reduces for a short period of time.
Overpopulation may indicate any case in which the population of any species of animal may exceed the carrying capacity of its ecological niche.
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