Fluctuating conditions of their habitat has led to a massive population decline. “Saving the smelt” has ignited tremendous controversy over the measures considered for saving their species. When considering the deep ecologist perspective, there is an obvious need to assure the safety of the delta smelt, despite the negative effect upon the economic standing of those dependent on water from the large pumps of the estuary. Efforts to protect the endangered fish from further decline have focused on limiting or modifying the large-scale pumping activities of state and federal water projects at the southern end of the estuary. Recognized by many as the “smeltdown in the Delta,” the extinction trajectory of delta smelt, has left the once-abundant species in critical condition due to record-high water diversions, pollutants, and harmful nonnative species that thrive in the damaged delta habitat.
However, Lionfish can have negative effects on the overall reef habitat as they can eliminate organisms which serve important ecological roles such as herbivorous fish which keep algae in-check on the reefs. Lionfish usually prefer living in still waters protected from any current, in quieter and darker parts of the reef; they are also known to exist in bays, estuaries and harbors. A female lionfish will release between 4,000 and 30,000 eggs during mating to be fertilized by the male’s sperm. This invasive species is growing and spreading rapidly through the Americas. It is uncertain how the lionfish arrived.
According to Everglades.org, they’ve “contributed to nearly 70 percent of extinctions in the United States” and are the “primary cause of species endangerment.” The water itself is a major cause of decline to the area, firstly because of poor water management leading to water levels being too low or too high at the wrong times has caused a decline in many species. Secondly, poor water quality has had devastating consequences. The pollution and an abundance of toxins and nutrients has helped to kill off many living things in the
Bradley brobst English II 12/14/09 Is the mega shark real or myth? Too many people believe that the megladon (mega shark) is not real, but the people have not seen the evidence of this horrific creature. There have been many sightings, photos, and some sort of video that can be plausible. Many bones of the great shark have been found of the shark. The shark is to be said that the length of the shark is about four times the size of a full size great white shark and about the width of a car.
two million acres (3,125 square miles). They Stretch from Central Florida all the way to South Florida. Biotic (living) Components ● There are many living components in the everglades. The two most wellknown species that inhabit the Everglades are the American Alligator and the American Crocodile. Both the Crocodile and the Alligator are both on the endangered species list.
According to Frazer (2008), a majority of salmon aquaculture in the Pacific Northwest consists of non-native Atlantic salmon. This is an issue according to Simberloff (2009), because after changes to habitat, research indicates that, “… the second greatest cause of species endangerment and extinction [is introduced species] …” (p. 2). There are several factors associated with invasive species, not the least of which is the spread of disease. Bakke & Harris (1998, as cited in Frazer, 2008) mentioned that hundreds of infections that are rare in wild Atlantic salmon populations are prevalent in farm raised Atlantic salmon. Escaped farmed salmon are then capable of spreading these infections to wild Pacific salmon populations.
This as well, will continue to lower Lincare’s profits. Lincare’s operating margin additionally declined from 24 percent to 16.6 percent. The 9.5% reimbursement cut on certain durable medical equipment, as well as the 36 month payment cap, and competitive bidding from CMS are negatively affecting the profits of the company. Lincare operating margins have declined from 28.8 in 2005 to 16.6 in 2009 (morningstar.com). Lincare’s Return on Equity has taken a steep decline over the past 5 years going from 21.83% in 2005 down to 14.54% in 2009.
In this environmental disaster, 10 cubic meters of water and 4.5 million cubic meters of potentially toxic slurry were spilled into virtually untouched forest, lakes and rivers. If something like this happens at the Pebble Mine, then most of the fish and wildlife in Bristol Bay would be in danger of being killed. A species that would be greatly affected by this is the sockeye salmon. More than half of the world’s population of these fish lives in Bristol Bay. This means that the survival of this species would be threatened.
Over the years, the population of Clemmys marmorata has decreased significantly and conservation efforts are being made to help this species. . Shown in Figure 4 are some areas where the Clemmys marmorata have been seen. Other major areas include places in Oregon, Washington DC, and California. Corsi, Buff, Corsi Gerald.
Zach Torres Oceanography T/TH 11-15-10 Great White Shark For many years there has been one animal that has struck fear in everyone that goes into the ocean. That animal is the Great White Shark. It has been known to exceed 20 feet in length, although most are about 5 meters long and weigh somewhere between 4000 and 5000 pounds. They live in almost all coastal areas that have a water temperature that stay between about 50 and 75 degrees. Perhaps the most well known place to see great whites is Dyer Island, which is off the coast of South Africa.