Read free Polar Bears on Ice

• Author: Katie Flanagan
• Published Date: 01 Dec 2001
• Publisher: Scholastic
• Language: English
• Book Format: Book, ePub
• ISBN10: 0439323606
• File size: 53 Mb
• Dimension: 149.86x 218.44x 5.08mm::385.55g
Download: Polar Bears on Ice

Read free Polar Bears on Ice. Spycams sneak within a paw's swipe of the world's largest land predators - Polar bears. Polar Bear Spy on the Ice gets closer than ever before to these charismatic bears and … A combination of dwindling sea ice and an all-you-can-eat-buffet of garbage may be drawing a massive influx of polar bears to towns on a Russian … So polar bears prowl the edges of the ice that forms on the Arctic sea each fall. When a seal pops up to breathe, a waiting bear may grab it and drag it onto the ice for a meal. FAMILY TIME All polar bears need to eat a lot. But a mom-to-be really needs to chow down and fatten up before winter. Polar bears (Ursus maritimus) are one of 4 marine mammal species managed the U.S. Department of Interior.The USGS Alaska Science Center leads long–term research on polar bears to inform local, state, national and international policy makers regarding conservation of the species and its habitat. Polar bears live throughout the Arctic, in areas where they can hunt seals in wide cracks in the sea ice or at breathing holes. The taxonomic name for polar bears is Ursus maritimus, which means sea bear, a fitting name for these champion swimmers. Polar bears are among the largest carnivores in the world. They live in the Arctic usually on sea ice at the edge of pack ice. This is the best location for the bears to hunt and capture seals. Many scientists consider polar bears to be marine mammals since they spend so … “Ice, it turns out, is a critical component of the polar bears’ environment,” Caswell said, “and for the first time we were able to link it directly to population growth.” Ice and ice bears. Like other predators at the top of the food chain, polar bears have a low reproductive rate. A mother and her cub on sea ice. While it's the loss of its ice that threatens the outright survival of the species, it's how many polar bears we're able to save right now which determines the The Polar Bear Specialist Group used the sea ice metric as a measure of polar bear habitat in the IUCN Red List assessment of polar bears, which assesses the conservation status of polar bears. The researchers plan to update their findings each year as new ice coverage data are available. Polar bears and the sudden appearance of cracks in the ice are just some of the perils encountered when studying how climate change is affecting the Arctic. A polar bear's paws are perfect snowshoes for them. The bottoms are wide and covered with fur to help keep the bear from slipping. The sharp claws help grip the ice. A polar bear can crawl across ice too thin for a human to walk on. They spread out their legs and lay their bellies flat on the ice. Located between Canada and Greenland, Baffin Bay is an Arctic habitat home to a unique subset of polar bears. But longer stretches without the animals' essential ice is causing heightened weight You'd think the sheer weight of a polar bear would send him plunging through the ice, and the fact is, it can, if the ice is too thin. But for the most part, polar bears traverse and live on ice without breaking through to the frigid water beneath. Weight-bearing adaptations and their instincts help keep them on Polar bears are almost entirely dependent on sea ice for their ability to survive, a decrease of sea ice in the arctic regions threaten the survival of the polar bear and will continue to, which Polar bears are dependent on sea ice to hunt prey—their diet consisting primarily of ringed seals and bearded seals. A decline in sea ice is a major threat to polar bears, which are currently listed as “vulnerable” on the Endangered Species List. The diagram above illustrates a relationship between declining sea ice and rising ocean temperatures. P olar bears are one of the few Arctic animals that rely on sea ice for their prey. As the Arctic sea ice melts the bear becomes redundant. This is probably the biggest threat to polar bears as it seems more likely than before that they are going to be extinct no later than 2060. A polar bear’s life seems simple enough: eat seals, mate, and raise cubs. But a recent study shows some subpopulations of polar bears are struggling to complete these essential tasks because of declining concentrations of Arctic sea ice. Polar bears have become an icon of the global warming movement. The theory is that global warming reduces the volume of Arctic sea ice, which in turn impacts polar bear habitat. Notwithstanding Polar Bears are the face for climate change impacts on today's species – and for good reason. Global warming has caused the most devastating effects in the Arctic so far, and the trend has only just begun. While polar bears have some capacity to adapt to the changes happening in the Arctic due to … Polar bears feed on ice-loving species, such as seals (ringed and bearded seals are their favorites), and sometimes walruses and whales. They stalk their prey waiting patiently near holes in the ice. This is where the seals surface, and therefore where the polar bears can hunt. Polar Bear: Spy on the Ice Documentary which uses spy cameras to get closer than ever before to the world's greatest land predator, the polar bear, revealing their intelligence and curiosity. Show “Less sea ice means less habitat, not only for polar bears but, importantly, also for the sea ice microorganisms that form a big part of the very base of the bear’s food chain,” he says. With sea ice availability changing, “we may need to revise our assessments of how threatened polar bears are likely to …

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