Sentences with phrase «local extinction of»

An alarming study finds at 4.5 degrees warming, the world's most biologically diverse ecosystems could see local extinction of half their plant and animal species.

For a century, the Channel Islands were used primarily for ranching and fishing activities, which had significant impacts on island ecosystems, including the local extinction of sea otters, bald eagles, and other species.

In 2015, & Beyond Phinda Private Game Reserve donated five lionesses to Rwanda's Akagera National Park (as part of an African Parks project) which helped to successfully reverse a 20 - year local extinction of the species; one of these lionesses recently gave birth to the first cubs born in Rwanda in nearly two decades.

Away from the coastlines, there is evidence that non-human primates can hunt prey at unsustainable levels, for example wild chimpanzees (Pan troglodytes schweinfurthii) at Ngogo in Uganda hunt red colobus monkeys (Procolobus rufomitratus) at a rate that may lead to local extinction of the latter (Teelen, 2008).

We have increasing evidence of a decline in certain tree species as a result of the local extinction of forest elephants.»

Then there are the bees: Regardless of whether honeybees become extinct as a species as a result of colony collapse disorder, climate change and other threats, the local extinction of various honeybee populations and the pollination they provide could spell disaster for human agriculture.

A first - of - its - kind study led by researchers at the University of Florida shows that the dramatic loss of elephants, which disperse seeds after eating vegetation, is leading to the local extinction of a dominant tree species, with likely cascading effects for other forest life.

«We found that local extinction of marine species exceeded 50 percent of current biodiversity levels across many regions and at times reached levels over 80 percent.»

«Climate warming causes local extinction of Rocky Mountain wildflower species: warmer, drier conditions decimated experimental populations of Northern rock jasmine, a mountain wildflower..»

The failure of these early glimmerings of art and sophisticated weaponry to spread and become permanent fixtures of the Middle Paleolithic and the Middle Stone Age seems to have been the result of small population sizes and local extinctions of these populations and their traditions.

[14 — 17] Actually, Nico Dauphiné and Robert J. Cooper take its already - tenuous claims one step further, citing Hawkins» work (actually a 2004 conference paper that summarizes his dissertation [18]-RRB- as evidence that «the continuous predation pressure exerted by exotic predators in exponentially high densities can and has resulted in numerous local extinctions of continental land birds.»

8 % + extinction rates, even if they be local extinctions of endemic species, is still a major disruption, like it or not.

Even local extinctions of keystone species may have major ecological and economic impacts.

Not exact matches

Within decades we will know whether man is going to be a physical success around earth, able to function in ever greater patterns of local universe, or whether he is going to frustrate his own success with his negatively conditioned reflexes of yesterday and will bring about his own extinction around the planet earth.

In thus individualizing ordination Augustine witnesses indirectly to the extinction in the West c. 400 of the older catholic feeling for the corporate ministry of the local church.51 Within four centuries the hereditary priesthood of Israel had been replaced by the indelible priesthood of Christendom, valid not by inheritance and birth but through a kind of rebirth in the solemn rededication of ordination in the descent of the Holy Spirit, an action which also represented a tactile succession going back to the apostles.

The coming elections in 2016 and 2017 present the very real danger of irrelevance and ultimately extinction for the party, especially if the SNP can gain local government fiefdoms like Glasgow, which act as centres for political patronage.

If Labour's collapse in the local and Mayoral elections had been synonymous with Ukip and Lib Dem gains, it would have been a portent of an extinction level political event on June 8th.

The study projected that as many as 20 percent of lizard species worldwide could go extinct by 2080, and local extinctions — the disappearance of a population in one particular geographic location — could reach as high as 40 percent.

«We came up with the idea that the native shrimps might be eating the exotic species to the point of local extinction, and hence its patchy occurrence» said Prof. Dick.

In May, a group of Kenyan forestry experts, including the conservation secretary of the country's Environment Ministry, warned that the mathenge tree could be at risk of extinction if the cogeneration plant's need for local biomass leads to overharvesting of the trees.

Previous studies by the Cardiff team on warming effects in the Rivers Wye and Tywi reveal significant reductions in insect numbers and even an instance of local species extinction due to climate change.

Among other examples of local and regional tipping points are the rapid collapse of coral reefs in the face of rising ocean acidity and the transformation of ecosystems by the extinction of a dominant species, or the introduction of a new one.

A corridor that is doing its job pushes back the probability of a local extinction — of island species winking out — just as trapped miners can be kept alive by tubes of air snaked from the surface.

His exploration of «the edge of extinction» is evocative, local and personal.

A global extinction crisis should show up in declining levels of local biodiversity, right?

In tropical forests, overhunting has been implicated in widespread local species extinction and the creation of»em pty forests».

They say the analysis provides the simplest expectation for the future distribution of marine biodiversity, showing recurring spatial patterns of high rates of species invasions coupled with local extinctions.

However, the more isolated a reef, the more self - reliant, and the higher the likelihood of local extinctions.

That's because temperatures tend to be uniform across uniform landscapes, he says, meaning that animals will have to migrate long distances to reach cooler locales, putting locals at greater risks of extinction during times of change.

With aggressive action to reduce greenhouse gases, the model predicts that only about 51 percent of sites will suffer local extinction (39 to 79 percent, depending on the global climate model).

The findings come after UEA research revealed that up to half of all plant and animal species in the world's most naturally rich areas could face local extinction by the turn of the century due to climate change if carbon emissions continue to rise unchecked.

New research, publishing on December 8th in the open - access journal PLOS Biology, shows that local extinctions have already occurred in 47 % of the 976 plant and animal species studied.

Local extinctions have already occurred in 47 % of the 976 plant and animal species studied, report researchers.

It found that local extinctions occurred in about half of the species surveyed across different habitats and taxonomic groups.

The study also tested the frequency of local extinction across different regions, habitats, and groups of organisms.

The new study, by Professor John J. Wiens from the University of Arizona, used these range - shift studies to show that local extinctions have already happened in the warmest parts of the ranges of more than 450 plant and animal species.

And a paper this week shows that local extinctions were also tied to bursts of warming.

Up to half of plant and animal species in the world's most naturally rich areas, such as the Amazon and the Galapagos, could face local extinction by the turn of the century due to climate change if carbon emissions continue to rise unchecked.

This could help avoid their own local extinction due to ever - increasing habitat degradation in their original range, could provide potentially robust stock for denuded areas, and assist in shortening the time needed for adaptation of stocks yet naïve to such extremes.

«The habitat would be chopped down and, in addition, with so many of the people who come in, there will be more hunting... exacting more pressure on species and leading to population declines and local extinctions.

«My concern is that the changes in behaviour Höglund describes may indicate populations on their way to local extinction,» says Bill Sutherland of the University of East Anglia.

Because their populations are already small in the region, barriers that isolate bears could eventually lead to inbreeding, increasing the risk of local extinction over time.

«We literally put heaters around the forest floor and warmed the ant communities up to see what would happen so we could more precisely ask how extinction and colonization and occupancy of these local habitats change,» Pelini said.

Having variants of two novelty - seeking genes might help some warblers survive by making migration more attractive to them than to peers who risk local extinction by staying put, a study has found.

Small populations of Middle Palaeolithic hominins may have contracted and survived in refugium zones in Arabia [19], [22], [62], [63], although genetic interchanges and local extinctions are expected [41], [60].

Introduction of ranavirus to isolated wood frog populations could cause local extinction.

Almost half of plant and animal species have experienced local extinctions due to climate change, research reveals, with the tropics suffering the most pronounced loss

One involves engineering reproductive isolation (speciation) between populations that can otherwise interbreed, so as to limit gene flow; a second involves creating genetic methods that can, reversibly, drive populations of invasive species and / or vectors of disease to local extinction; a third involves creating genetic methods that can drive — in ways that are easily reversible — the spread of beneficial genes into wild insect populations so as to prevent the spread of vector - borne disease.

Despite offering a number of playable mech pilots along with local and online multiplayer modes, the result is an unmotivated rehash that's overdue for an evolution (or extinction).

Public libraries have been teetering on the brink of extinction for years, a fact that doesn't seem likely to improve in the near future given the economic situations that lead local governments to take aim at the libraries as a primary target.