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يوجد 41 صفحة - انت الآن في الصفحة رقم 1
Jawad Jawad
Learning English
منذ 1 أيام   نشر في  ٢٠٢٦/١٠/١٩ م
As of September 16, 2007, U.S. government scientists announced that the ice was 1.59 million square mi (4.14 million square km) in extent, about a fifth smaller than the previous record, set in September 2005.

The impact of declining sea ice on polar bears is profound. One of the polar bears' primary food species is ringed seals, which the bears attack when the seals come to the surface in ice holes to breathe.
28

Jawad Jawad
Learning English
منذ 2 أيام   نشر في  ٢٠٢٦/١٠/١٨ م
The area covered by Arctic sea ice varies seasonally, reaching a low point every September. North polar sea ice has been declining in area for every month of the year since at least 1979; that is, in each month of the year, the ice area is smaller compared to the same month in earlier years. In August and September 2007, the north polar sea-ice area shrank to the smallest size ever recorded.
75

Jawad Jawad
Learning English
منذ 3 أيام   نشر في  ٢٠٢٦/١٠/١٧ م
Scientists with the Canadian Wildlife Service have found that because seals are becoming less accessible to bears due to a shortened ice season, some polar bear populations are already at increased risk of starvation. U.S. government scientists have warned that two thirds of polar bears will be gone by the year 2050, even under conservative global-warming scenarios.
30

Jawad Jawad
Learning English
منذ 4 أيام   نشر في  ٢٠٢٦/١٠/١٦ م
Polar bears (Ursus maritimus) are a large, light-furred species of bear that lives only around the perimeter of the Arctic. They are the largest land predators in the world and an icon of the Arctic region, often featured in cartoons and other popular representations. Since they depend on floating sea ice for much of their access to prey, polar bears are endangered by rapid shrinkage of the north polar sea ice.
26

Jawad Jawad
Learning English
منذ 5 أيام   نشر في  ٢٠٢٦/١٠/١٥ م
Only one person has been killed by a bear on Kodiak in the past 75 years. About once every other year a bear injures a person.

Kodiak bear research, management and habitat protection is done cooperatively by the Alaska Department of Fish & Game and Kodiak National Wildlife Refuge.
31

Jawad Jawad
Learning English
منذ 6 أيام   نشر في  ٢٠٢٦/١٠/١٤ م
Today hunters kill about 180 Kodiak bears each year under tightly controlled regulations. About 5,000 resident hunters apply each year for a chance at the 496 bear permits that are available for them. Hunters who are not residents of Alaska must hire a professional guide, paying $10,000 – $21,000 per hunt. Over 70% of the Kodiak bears killed by hunters are males.
45

Jawad Jawad
Learning English
منذ 1 أسابيع   نشر في  ٢٠٢٦/١٠/١٢ م
Concern over reduced bear populations prompted sportsmen to petition the Federal government to protect bears and their habitat on Kodiak. The results of their efforts were stricter regulations and creation of Kodiak National Wildlife Refuge in 1941.

Kodiak bears were commercially hunted throughout the 1800s with the price paid for a bear hide being comparable to that paid for a beaver or river otter pelt (about $10).
28

Jawad Jawad
Learning English
منذ 1 أسابيع   نشر في  ٢٠٢٦/١٠/١١ م
Bears and cattle ranchers have waged an ongoing battle for the past 200 years. Original Russian settlers were encouraged to bring large aggressive dogs to protect cattle from bears. As early as the 1930s, biologists and ranchers were exploring ways to reduce the number of cattle killed by bears. At one point bears were shot from airplanes, and a 9-foot high bear fence was proposed to bisect Kodiak Island and create a “bear-free zone.”
22

Jawad Jawad
Learning English
منذ 2 أسابيع   نشر في  ٢٠٢٦/١٠/٠٩ م
Although generally solitary in nature, Kodiak bears often occur in large groups in concentrated feeding areas. Because of this, they have developed a complex language and social structure to express their feelings and avoid fights.

Traditionally, Kodiak Natives (Alutiiqs) hunted bears for food, clothing and tools. Arrows, spears, and a great deal of courage were required hunting equipment. Bear heads were usually left in the field as a sign of respect to the spirit of the bears.
32

Jawad Jawad
Learning English
منذ 2 أسابيع   نشر في  ٢٠٢٦/١٠/٠٨ م
Bears are naturally diurnal (active during the day), but when faced with competition for food or space, they adopt a more nocturnal (active at night) life style.

Bears do not defend territories, but they do have traditional areas that they use each year (home ranges). Because of the rich variety of foods available on Kodiak, bears here have some of the smallest home ranges of any brown bear population.
23

Jawad Jawad
Learning English
منذ 2 أسابيع   نشر في  ٢٠٢٦/١٠/٠٧ م
Bears use the most nutritious parts of their food to maximize their weight gain. Grass and forbs are only used while they are rapidly growing in the spring and early summer. Brains, flesh and eggs are preferred parts of the salmon. Internal organs of deer, elk and cattle are eaten first when one is killed or scavenged. Berries are used most often when they are ripe and sugars are at their highest level.
20

Jawad Jawad
Learning English
منذ 2 أسابيع   نشر في  ٢٠٢٦/١٠/٠٥ م
Though Kodiak bears are often touted as the world's largest land carnivore (meat eaters), they are really omnivores (using a variety of foods). They actually spend more time eating grass, plants and berries than meat. Fish are an important part of their diets, but few Kodiak bears expend the time or effort necessary to chase and kill mammals.
30

Jawad Jawad
Learning English
منذ 2 أسابيع   نشر في  ٢٠٢٦/١٠/٠٣ م
Researchers from NASA and the medical professions are very interested in denning physiology. They are trying to figure out how bears can sleep for up to 8 months without eating, drinking, urinating or defecating, yet when they awaken they have lost little bone mass or muscle tone and have no signs of uremia. Understanding this could help astronauts during extended space flights or patients who are bedridden.
35

Jawad Jawad
Learning English
منذ 3 أسابيع   نشر في  ٢٠٢٦/١٠/٠٢ م
Kodiak bears become sexually mature at age 5 and can continue to produce cubs throughout their lives. The average interval between litters is about 4 years.

Kodiak bears begin entering their dens in late October. Pregnant sows are the first to go to dens, males are the last. Males begin emerging from their dens in early April, while sows with new cubs may stay in dens until late June. Some males may forego denning, staying awake all winter.
32

Jawad Jawad
Learning English
منذ 3 أسابيع   نشر في  ٢٠٢٦/١٠/٠١ م
Most cubs stay with their mothers for 3 years. Over 25% of the cubs die before they leave, with cannibalism by adult males being one of the major causes of death.

Bears that have recently left their mothers, at ages 3-5, have a high mortality rate as they face the world on their own. Some of these subadults are the “juvenile delinquents” of bear society and are also the ones most likely to cause problems with people.
35

Jawad Jawad
Learning English
منذ 3 أسابيع   نشر في  ٢٠٢٦/٠٩/٣٠ م
Cubs are born in the den during January or February. Weighing less than a pound at birth with little hair and closed eyes, they suckle for several months, emerging from the den in May or June, weighing 15-20 pounds.

Typical litter sizes are 2-3 cubs. Sows are sometimes seen with 5 or 6 cubs in tow, probably due to adopting cubs from other litters.
19

Jawad Jawad
Learning English
منذ 3 أسابيع   نشر في  ٢٠٢٦/٠٩/٢٩ م
Kodiak bears are the largest bears in the world. A large male can stand over 10' tall when on his hind legs, and 5' when on all four legs. They weigh up to 1,500 pounds. Females are about 20% smaller, and 30% lighter than males.

The oldest known wild Kodiak bear was a 34-year-old sow. The oldest boar was 27.
29

Jawad Jawad
Learning English
منذ 3 أسابيع   نشر في  ٢٠٢٦/٠٩/٢٨ م
Kodiak bear populations are healthy and productive. They enjoy relatively pristine habitat and well managed fish populations. In most areas the number of bears is stable, but there are some places where bear density is increasing.

Male bears are called boars, females are sows, and youngsters are cubs.
32

Jawad Jawad
Learning English
منذ 3 أسابيع   نشر في  ٢٠٢٦/٠٩/٢٦ م
Kodiak bears are a unique subspecies of the brown or grizzly bear (Ursus arctos middendorffi). They live exclusively on the islands in the Kodiak Archipelago and have been isolated from other bears for about 12,000 years.

There are about 3,500 Kodiak bears; a density of about 0.7 bears per square mile.
25

Jawad Jawad
Learning English
منذ 4 أسابيع   نشر في  ٢٠٢٦/٠٩/٢٥ م
By implementing these conservation measures in a coordinated and interdisciplinary manner, stakeholders can work together to conserve Honey Badger populations and their habitats, thereby ensuring the persistence of this iconic species and the maintenance of healthy ecosystems across its range.
23

Jawad Jawad
Learning English
منذ 4 أسابيع   نشر في  ٢٠٢٦/٠٩/٢٤ م
Honey badgers need Research and Monitoring: Conducting scientific research and monitoring programs to assess Honey Badger populations, distribution, and habitat use, as well as to identify threats and conservation priorities. This involves using techniques such as camera trapping, radio telemetry, and genetic analysis to gather data on Honey Badger ecology, behavior, and population dynamics.
33

Jawad Jawad
Learning English
منذ 4 أسابيع   نشر في  ٢٠٢٦/٠٩/٢٣ م
Honey badgers need Anti-Poaching Efforts: Implementing measures to combat poaching and illegal wildlife trade, which pose significant threats to Honey Badger populations. This includes increasing enforcement efforts, strengthening laws and regulations, and raising awareness about the importance of protecting wildlife and their habitats.
26

Jawad Jawad
Learning English
منذ 4 أسابيع   نشر في  ٢٠٢٦/٠٩/٢٢ م
Honey badgers need Habitat Protection: Establishing and managing protected areas, such as national parks, wildlife reserves, and conservation corridors, to safeguard critical Honey Badger habitats and ensure connectivity between populations. This involves mitigating threats such as habitat loss, fragmentation, and degradation due to deforestation, urbanization, and agricultural expansion.
25

Jawad Jawad
Learning English
منذ 4 أسابيع   نشر في  ٢٠٢٦/٠٩/٢١ م
Conservation measures for the Honey Badger are crucial to ensure the long-term survival of this species and the maintenance of healthy ecosystems across its range in Africa, Southwest Asia, and the Indian subcontinent.
14

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