Exemplos de uso de Population declines em Inglês e suas traduções para o Português
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African Elephant Population Declines By 30 Percent.
Extensive hunting for bushmeat and skin andillegal mining have also led to population declines.
Amphibian has suffered severe population declines on a global scale since the 1980s.
The paranapiacaba region is one of the brazilian localities for which there are reliable records of amphibian population declines.
In Europe, a“birth dearth” is threatening not only long term population declines, but the viability of European economies.
Population declines are closely related to the introduction of the eastern mosquitofish(Gambusia holbrooki), a species native to North America that was introduced to control mosquito larvae.
At first, physical deformities were being noticed andthen large population declines were being documented.
It is believed that m. dorsalis has undergone population declines and is being threatened mainly for the loss and decline of its habitat due to urbanization.
The edge effect is a combination of physical and biotic changes associated with the margins of habitat patches,one of the main reasons for population declines of species in fragmented areas.
Several species of sharks have suffered drastic population declines in recent decades, and bycatch and fishing to obtain their fins destined for the lucrative asian trade can be considered the main causes.
Amphibians are highly sensitive to environmental degradation,facing serious problems of population declines, local extinctions, or even species extinctions.
Foraging bats, such as the great fruit-eating bat artibeus lituratus(chiroptera: phyllostomidae)(olfers, 1818), may be exposed to pesticides through contaminated food or water. this continuous exposure may result in damage to the energy metabolism, anti-oxidative defenses or histopathological alterations, andall of them might lead to population declines on a long-term scenario.
Among the organisms most affected are the amphibians,which facing serious population declines, local extinctions or even species extinctions.
Abstract Oceanic sharks are among the most vulnerable animals throughout the marine ecosystem and due to increasing fishing pressure,several species have shown population declines greater than 80% in recent decades.
Because"Bedotia" and"Rheocles" are generally the first to exhibit population declines or disappear from areas where habitat is moderately to highly disturbed or degraded, they are reliable indicators of ecosystem health and stability.
The historical densities recorded for the species were 25,2 in the early birds/ km2 1970(Castro 1976), down to 5,7 birds/ km2 in an area1992-1994(EC Enkerlin-Hoeflich in 1994, Enkerlin-Hoeflich 1995), indicating a population declines of up to 77,4% on a strip of 20 years.
But what looms large is the possibility that the effect was more global in nature,since in the 1980s, population declines were also observed in Central and North America as well as in Australia.
Although Storch, et al.(2006) noted that the Cantabrian capercaillie meets the criteria to be listed as"Endangered" on the IUCN Red List due to"rapid population declines, small population size, and severely fragmented range", it is not classified as such by the IUCN.
A spatio-temporal statistical analysis allowed scientists to detect the coincidence between the presenceof chytrid fungus and a good many of the registered extinctions or population declines in an area of the Atlantic Forest that stretches from Rio de Janeiro to Paraná and includes Itatiaia, in Rio de Janeiro State, and Boraceia, in São Paulo State.
Despite this relevance, estuaries are exposed to several anthropic impacts, which can lead to major changes in larval recruitment in some species that depend on these environments,may resulting in a low density of organisms and population declines, promoting an ecological imbalance in the estuary and adjacent coastal waters, inducing direct actions over the estuarine-dependent fishery resources.
Habitat loss anddegradation are the main cause of their population decline.
Drastic population decline and rank the mid-nineteenth century.
Some people say it's not population decline.
In 8 of the 12, population declined over the 1990s.
There has been a problem of population decline due to elevated levels of emigration after the break-up of the USSR.
The anurans are in population decline worldwide, and water pollution is one of the factor influencing this process.
Pathogens are rapidly becoming one of the key drivers of local population decline and potential extinctions.
Europe will see its working age population decline by over 20 million during the next 25 years.
Neotropical grasslands present a high number of species in population decline and threatened to extinction, and, therefore, this region has high conservation priority.
Population decline can refer to the decline in population of any organism, but this article refers to population decline in humans.