Sentences with phrase «by loss of habitat»

Forest elephants in Kenya (Meisjesanne via Flickr) Shy and reclusive, the forest elephants of Congo, Central Africa are being pushed to the brink of extinction by the loss of habitat and illegal poaching for the ivory and bushmeat trades.

Forest Heroes created the slogan «She's not a fan,» with images of endangered Sumatran elephants, one of the animals threatened by the loss of habitat associated with the expansion of palm oil plantations.

The decline in songbird populations is caused by loss of habitat.

Threatened by loss of habitat and illegal ivory poaching, the African Elephant is currently on the verge of extinction.

«To put that in perspective, that area is one - tenth the size of the home range of a Bornean elephant endangered partially by loss of its habitat due to deforestation.»

Until recently, they were threatened mainly by loss of their habitat, as land was converted to agriculture.

But up to one - third of them are threatened, mainly by loss of habitat, and 500 have gone extinct during the last 150 to 200 years or haven't been spotted for many years.

«We're assuming that the distribution of the species in the future will be constrained by the loss of their habitat,» said James Hatten, a biogeographer at USGS and author of the research.

Not exact matches

«The one process ongoing in the 1980s that will take millions of years to correct,» Harvard biologist E. O. Wilson has warned, «is the loss of genetic and species diversity by the destruction of natural habitats.

In 2017, The New York Times reported that the Bornean orangutan's population had declined by more than 80 percent in the last 75 years largely because of habitat loss.

Bats are highly threatened by a range of problems including habitat loss, conflict with humans and pesticide use.

Common threats include: loss of nesting and roosting sites, habitat fragmentation by conversion or destruction of vegetation, habitat fragmentation by excessive exposure of nectar plants to herbicides and pollinators to pesticides, over-hunting, disruption of nectar corridors required by migratory pollinators, and competition by invasive species65.

While overall habitat loss is a factor in these declines, research also indicates that even fields of sufficient size, if they are fragmented or interrupted by hedgerows or natural windbreaks, will be passed over by the birds, which may view the linear plantings as cover for predators.

Ghana has an array of wildlife that can be seen at zoos and national parks in Ghana, although populations have been drastically reduced by habitat loss and poaching.

These projects include work to protect water voles in the South West of England from habitat loss and predation by the American Mink; work to safeguard the future of dormice in Cheshire and the creation of wildlife corridors benefitting birds, mammals and amphibians in North Wales.

Crowley believes that gaining a better understanding of how animal mobility has been affected by the loss of species and habitat will be beneficial to current and future conservation efforts on the island.

We learned that quite a few of the species are seriously threatened by habitat loss and over-hunting, but none are yet extinct.»

The report, compiled by the World Conservation Monitoring Centre (WCMC) and the World Conservation Union (IUCN), shows that well over half the threats to tree species arise from loss of habitat, due to agriculture or human settlement.

«For the first time,» co-author C. Page Chamberlain of Stanford University notes, «we have evidence that it may be possible to restore breeding populations in the north by preventing habitat loss in the south, allowing us to develop an international conservation strategy for dealing with songbirds.»

Causeways and other roads that bisect wetlands alter natural habitats by providing avenues by which invasive plants species can colonize wetlands and nesting areas, altering natural hydrology of wetland systems, altering storm water runoff and drainage, providing avenues for road salts and pollutants and the direct loss of habitat due to land - clearing and paving.

Its major problem has been habitat loss, and it was not helped by the introduction of predatory monkeys.

But even here, the researchers point out, this lack of decline may be attributable to habitat loss in east and west Africa having already been substantial by the 1990s.

The spotted hyena is doing well enough to be considered of «Least Concern» by IUCN, but its population is also declining, primarily due to habitat loss.

«A lot of people think the loss or degradation of habitat is the big threat to wild animals, but here it shows there is a major threat from direct exploitation by humans,» Ripple says.

My naïve plan to make a difference by treating one animal at a time evaporated when I saw first - hand the enormity of the problems of human poverty, habitat loss, and politics versus science.

Such habitat losses will likely increase, as the country's current population of about 22 million is projected to more than double by 2050.

The big cats, also known as pumas or mountain lions, once ranged all the way to the East Coast, but were exterminated by hunting and habitat loss through much of their North American range.

The Iberian lynx is threatened by poaching, road kills, habitat loss and lack of prey following a series of disease outbreaks in the rabbit populations.

During the late 20th century their numbers were devastated by hunting and the loss of their forest habitat for logging and rubber plantations.

«This is the first time we've quantified the effect of habitat loss on biodiversity globally in such detail and we've found that across most of the world biodiversity loss is no longer within the safe limit suggested by ecologists» explained lead researcher, Dr Tim Newbold from UCL and previously at UNEP - WCMC.

The hihi is one of the world's most evolutionarily unique birds, classed as the only member of its own family, and were lost from New Zealand's North Island by around 1895 because of introduced predators such as rats, habitat loss due to farming and disease.

Most large animals are also penned into areas that are surrounded by habitat loss, so their chances of moving are very slim.

While feral honey bee populations may be healthy in many parts of the world, the researchers note that the health of managed honey bee colonies is threatened by a host of factors including habitat loss, pesticides, pathogens, parasites and climate change.

Blog by Oliver Ryder, San Diego Frozen Zoo The marvel that is the black - footed ferret has seen the loss of habitat and prey and experienced devastating epidemics that brought it...

You can see the impact of habitat loss on local climate by poking a stick into the parched soils of the Brazilian cerrado or wandering along the boundary of the expanding Sahel Desert in Africa.

Current prices for conventionally grown foods do not reflect the costs of federal subsidies to conventional agriculture, the cost of contaminated drinking water, loss of wildlife habitat and soil erosion, or the cost of the disposal and clean up of hazardous wastes generated by the manufacturing of pesticides.

However, this biodiversity is threatened by habitat loss, identified this issue of great moment seeks to provide solutions through education because it has vast resources to develop educational experiences through awareness.

In a report by the World Conservation Union surveying 1,173 threatened bird species, habitat loss was the biggest threat, affecting 89 percent of all threatened birds and 83 percent of the threatened mammals sampled.

Due to the rapid loss of habitat by development, many coyotes, bobcats, and mountain lions have found themselves forced to cohabit with humans.

While it's true that feral cats do pose a threat to endangered birds, the bigger threat comes from a disasterous loss of habitat caused by indiscriminate development.

Threatened in some areas of the native range by pollution and habitat loss, especially in waters near large metropolitan areas.

Since 2002 it has been listed as Least Concern on the IUCN Red List as it is widely distributed but threatened by habitat loss and hunting in parts of its range.

Loss of the habitat and nutrients provided by kelp forests leads to profound cascade effects on the marine ecosystem.

The first of which being loss and degradation of habitat resulting from over grazing by domestic livestock (cattle and horses) and feral nonnative herbivores (sheep, deer, elk).

«WWF believes it is possible for palm oil imports into Australia to be 100 per cent CSPO by 2015, ensuring our palm oil consumption does not drive the further loss of these amazing habitats,» said Mr Bourne.

Pressed by hunting and habitat loss along its range from Florida west to coastal Texas and north to the Carolinas, the species was so depleted that by 1966 federal wildlife officials deemed it was in danger of vanishing and extended legal protections to the reptile.

«Based on these studies, and many others using fossil and historical records, we argue that evidence for the widely cited view that future climate change poses an equal or greater threat to global biodiversity than anthropogenic land - use change and habitat loss (Thomas et al., 2004) is equivocal: extinctions driven by the latter processes of habitat loss pose a far greater threat to global biodiversity.

The declines are attributed by researchers to a combination of factors including disease, low genetic diversity in bee populations, habitat loss and change, and the use of pesticides.

According to the United Nations, as much as 40 percent of the world oceans are heavily affected by human activities, including pollution, depleted fisheries, and loss of coastal habitats.

Regardless of whether hybridization rates may increase, at least for polar bears any effect they might have on population welfare pale by comparison to the loss of habitat and subsequent loss of foraging ability.