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A brief report of the animals that are endangered biology essay
Animal extinction essay with definition and facts
Extinction of a species
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Basset hounds are extremely friendly and loving family pets who live for between 8 to 12 years. They have a short and hard textured coat which is usually tri-colours (black, brown, white). They are a pack animal who love attention from both human and other dogs and will become lonely and destructive when left on their own. They have a rounded skull with a deep muzzle and lots of loose skin which gives them a droopy look on their face. Their short legged appearance results as a form of dwarfism called achondroplasia.
Also ranchers brought in pigs which gave Goldens more prey. After the Goldens took over the area, the foxes started to decline because the Golden Eagles preyed upon the foxes. The foxes then died of diseases from dogs.
Major League baseball teams and some college leagues use wood bats. College level teams use wood bats when their league is only for wood bats. For example, the Lakeshore Chinooks are in a wood bat league. Some other countries that baseball is popular in are Cuba and Taiwan. Every wood bat is different.
This essay by Terry Tempest Williams, is describing us first the massacre of the prairie dog that occurred at the Cedar Ridge Golf Course, where over 400 prairie dog where gassed to death. There are 5 species of prairie dog and they are now threatened and might be in extinct in couple of years. The people wanted to exterminate the dogs because they were running the range because they consume a large amount of green grasses and forbs. According to Williams, “Prairie habitat not only for themselves but also for other grassland species. Prairies dog create diversity, destroy them, and you destroy a varied world (p86/87).”
Today spotted owls are particularly rare in their traditional habitat range of British Columbia, the Cascade Mountains of northern Washington, and the Coast Ranges of southwest Washington and northwest Oregon. However, a large and virtually isolated population still exists on the Olympic peninsula. Estimates suggest that the amount of suitable habitat available to spotted owls has been reduced by over 60 percent in the last 190 years. The main threat to the spotted owl is habitat loss as well as competition as well as being edged out of their territory by the barred owl. Listing of the northern spotted owl as threatened and the designation of critical habitat space are helping to reduce habitat loss on Federal lands.
While otters are considered secure globally, the southwestern stock in Alaska is threatened. According to Alaska's Department of Fish and Game, http://www.adfg.alaska.gov/index.cfm?adfg=seaotter.main "in southwest Alaska, sea otters have experienced a sharp population decline in the last 20 years," while the Southeast and Southcentral stocks have stabilized or increased. In an email exchange with Webber, he told me that the otters washing up were assumed to be non-threatened Southcentral northern sea otters because of the location of where they came ashore. Otters have a unique history in Alaska. They bounced back from the fur trade, that began in the 1700s, that almost wiped them out.
Finally, many may argue that human contributions such as hunting, poaching, etc. caused the decline of elk. Hunting did cause a decline in elk however the mass declination of elk came from the wolves being reintroduced. It incited fear into the elk as they would avoid certain areas to avoid the wolves territories. These areas had a better chance of vegetation to grow and animals and insects that wolves don’t eat, to migrate to those areas. The soil in the area were not disturbed as much as when the elks were there.
A keystone species are an extremely important factor for keeping diversity in an ecosystem. When lost they can have detrimental effect on the ecosystem they are inhabiting. These include and diversity decrease and the ecosystem 's structure is significantly structured(Campbell). It has a strong control over the community due to its ecological role or niche(Reece). One of the main keystone species that is regenerating is the grey wolf or the Canis lupus.
The gray wolf 's expressive behavior is more complex than that of the coyote and golden jackal, as necessitated by its group living and hunting habits. While less gregarious canids generally possess simple repertoires of visual signals, wolves have more varied signals which subtly inter grade in intensity.[12][13] When neutral, the legs are not stiffened, the tail hangs down loosely, the face is smooth, the lips untensed, and the ears point in no particular direction.[135] Postural communication in wolves consists of a variety of facial expressions, tail positions and piloerection.[120] Aggressive, or self-assertive wolves are characterized by their slow and deliberate movements, high body posture and raised hackles, while submissive ones carry their bodies low, sleeken their fur and lower their ears and tail.[136] When a breeding male encounters a subordinate family member, it may stare at it, standing erect and still with the tails horizontal to its spine.[137] Two forms of submissive behavior are recognized: passive and active. Passive submission usually occurs as a reaction to the approach of a dominant animal, and consists of the submissive wolf lying partly on its back and allowing the dominant wolf to sniff its anogenital area.
Black tailed prairie dogs are burrowing rodents that live in large colonies in the grasslands of central and western North America. They emerge from their burrows in daylight to forage and feed on roots, grasses, and seeds. Their head and body are 12-15 inches tall, and their tail is 3-4 inches tall. Prairie dogs are considered a keystone species because their colonies create islands of habitats that benefit approximately 150 other species. They are a food source for coyotes, black footed-ferrets, eagles, and badgers.
Because of this, many native species are dying out.
Deeply affected by human encroachment into its territory, when the species was declared federally endangered in 1967, only about 12 individuals remained in the wild (Threats to Florida Panthers). Currently there are around 180 individuals in the wild, and the US Fish and Wildlife Commission’s Florida panther plan defines a successful panther population worthy of delisting the species as endangered. Its requirements for delisting are as follows: “Three viable, self-sustaining populations of at least 240 individuals (adults and subadults) each have been established and subsequently maintained for a minimum of twelve years. Sufficient habitat quality, quantity, and spatial configuration to support these populations is retained / protected or secured for the long-term.(fwc panther
Are pit bulls dangerous dogs or are they just stereotyped? When comparing all breeds of dog, pit bulls are a good choice for a family dog in spite of the common misconception about their aggressive and unpredictable behavior. Pit bulls are known for a reputation of being vicious and aggressive, but really pit bulls aren’t any more or less dangerous than other breeds. These misconceptions are usually a result of people being uneducated about pit bulls.
Sixty years after the extirpation of wolves in the Northern Rockies and Great Plains of America, biologist and ecologist in Yellowstone National Park reintroduced wolves into a declining ecosystem that once thrived during their presence. The reintroduction brought immense controversy into the West and continues to stir outrage among anti-wolf groups. These anti-wolf supporters argue wolves are ruthless predators that cause destruction to natural environments and livestock. Conversely wolf advocates and scientists suggest that wolves are a keystone species that are essential to the natural regulation of our Western ecosystems. Although pro and anti-wolf advocates can agree that wolves have an effect on livestock, ungulate populations and ecosystems,
Have you ever thought about which animals are near extinction or endangerment ? Have you looked them up? How many are left? Which ones have been removed? Do you know why they are going endangered?
