Climate change polar bears essay
scientists say the reason for the apparent rise could be less hunting, but they dont rule out the effect of different sampling techniques. Latest counts Its worth noting that between, a scientific working group to the Canada-Greenland joint commission carried out a new comprehensive count of polar bear numbers in Baffin Bay and Kane Basin ( pdf ). These temperature increases will have massive consequences on ecosystems that are related to ice and particularly, to polar bears. But without action to tackle climate change, it is likely that many polar beat subpopulations will cross tipping points over the next century if sea-ice loss continues as forecasted, says Cator.
As temperatures keep rising, polar bears face a bleak future ahead, say scientists. Whether or not it sees polar bears status altered will depend not only on the new Baffin Bay and Kane Basin counts, but also on the methods used to project future populations across all the regions in the Arctic, the timeframe considered, and what other. But the findings are far more nuanced than that, a scientist who was involved in the report tells Carbon Brief. The polar bear is the largest terrestrial carnivore known to man, and is known by the scientific name Ursus maritimus or "the sea bear". But elsewhere, other factors such as hunting, shipping, oil and gas activities, tourism, prey availability and successful conservation come into play to greater or lesser extents. This is because declining sea ice means polar bears are losing vital habitat. With the last iucn Red List assessment only a year ago, the next one isnt due for a few years. Similarly, if sea ice loss continues in the Kane Basin, the study predicts that any recent growth in polar bear numbers will diminish and be replaced by negative impacts. Yet every now and again, claims emerge in the media that polar bears plight might not be so serious after all. Polar bears spend their days on the ice, hunting seals, so the changes meant they had to spend a lot more time on Russia's Wrangel and Herald Islands. Global climate change presents some serious problems and dangerous changes for all living organisms, but it is of especially great concern to the polar bear. Unusually warm weather in winter can cause dens to collapse, which females build to birth and protect their young.