Bald eagles are found in many environments in the United States. Those environments include deserts, mountains, freshwater, and marine areas. Bald eagles are known to build very large nests in treetops and always near water. The main source of food for bald eagles is fish, but they will sometimes eat other small animals.
From a biodiversity perspective, the lionfish is creating a profoundly negative effect on the health of several native species of fish. The lionfish is a fish that always looks to invade and has characteristics that provide them with an advantage in new areas. Lionfish reproduce rapidly and are the strongest creatures overtaking coral reefs today. The spines of lionfish contain venom and can kill numerous species of fish. Lionfish are damaging the communities that live in coral reefs.
Predators have become a colossal problem lowering duck populations and overall nest success and recruitment. With the decline of apex predators such as wolves and coyotes predators such as Red Fox, raccoons and skunks have been able to run rampant and destroy duck populations altogether. The use of predator corridors or the congregation of predators in areas with large duck numbers began to become more prevalent. Nests need to have at least 15% nest success to maintain a minimum number of ducks within the population. That number is hard to maintain when Red Fox are annually killing 900,000 adult ducks within that of the breeding grounds.
The nesting differs from male to female because of the egg incubation. The females lay four to seven white eggs in the bowl shaped nest. Each nest is located in tall grass to help protect them. They are also attracted to marshy lands.
The Nutria is a large rodent and its native habitat is South America. They are predominantly found in rivers, marshes that are fresh, several types of wetlands, and on some occasion’s swamps. Nutrias were imported to the United States because of their fur. They were eventually released into the environment and are reported to have spread to many parts of Maryland (Kendrot). These animals are detrimental to the marshes in Maryland, and need to be prevented from spreading more before the damage done becomes irreversible.
The number of animals is from 2 – 50 million. Yes, there’s less animals than there are of humans, but what if both animals and humans were to decrease, you may ask? Well, the Circle of Life is one thing, but to have both animals and humans die at the exact time is dangerously crucial. It’s dangerously crucial because there are 16,306 endangered species threatened with extinction, according to www.endangeredearth.com. If those endangered species die out, in addition to our everyday North American Species of birds and mammals, then we have no chance of survival due to BPA still existing.
In the 1950s and 1960s , something weird happened in the estuaries next to the long island sound , new York and Connecticut . Birds of prey , ( eagles ) fed on fish in the estuaries had soaring concentrations of the insect killer DDT in their bodies. Even though when the water in the estuaries was tested , it had low concentrations of DDT. In consequence , poisons that dissolve in fat (such as DDT) , can become more intense as they upgrade up in the a food chain in a process called biological magnification. When the pesticide mixes with the water , algae and bacteria are effected with the poison .
Many of the introduced trout resulted in the disturbance of local ecosystems through the competition with or preying upon indigenous fishes. Rainbow trout has been blamed for driving many native species into extinction or endangerment. They have eradicated frog species and threatened many native fish species in a variety of environments, such as the Californian golden trout and humpback chub in the Grand Canyon. As established, eliminating or diminishing aquatic species in a given habitat can have drastic impacts on the entire
However, of 50,000 species, approximately 4,300 have been considered invasive species (Pimentel, 2004). Of these 4,300, a few are having major effects on the United States and are a threat to peoples way of life. Originally the Asian Carp was introduced by humans in an attempt to address another problem, mainly to remove algae from catfish farms and wastewater treatment ponds in the 1970s. But sometime in the next two decades, the fish escaped their enclosures, most likely due to several large floods in the '90s (Visser), and then they began to spread. Currently the Asian Carp is in 45 states, bighead carp have been collected from 18 of these states, silver carp from 12 states, and black carp from only Illinois (U.S Fish & Wildlife
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.
TEXAS/MEXICO BORDER: GEOGRAPHY/ISSUES/CHALLENGES The Mexican border with the State of Texas is a large, rugged and sparsely populated area covering approximately 1,254 miles of the total 1,900 miles of American border territory with Mexico. The river that makes the natural border along the Western and Southwestern part of the state, the Rio Grande, is one of the major means of illegal entry for individuals wishing to enter the United States. The varying patterns of the Rio Grande are responsible for areas measuring less than 75 yards in width, making aquatic entry an enticing and relatively simple solution. Texas has a notoriously porous border and has been exploited for this reason for decades, the agents of the United States Customs and
With its dotted yellow and red pattern on its back and a brown-green belly, the brook trout is a very popular fish that is prized by the fly fishing and angler industry. Knowing this, it isn’t a surprise that the brook trout’s habitat is disappearing and that the species is being overfished. This leads to the population of the fish quickly dwindling in smaller numbers than before. Brook trout thrive in many environments, from lakes to rivers, and even mountain streams in the Appalachian Mountains. They are native to the Great Lakes region and some of Canada.
The Regent Honeyeater is a stunning bird which was originally found within 300km of the coast from Brisbane to Adelaide. The diet of these special endangered birds are most commonly nectar from eucalyptus they are omnivores. At the moment the population of these striking birds is 800-2000 birds left which puts the Regent Honeyeater in a critically endangered state. The kingdom these birds come from is Animalia. There phylum is Chordata, the Class Birds, the Order Passeriformes, a family of Meliphagidae, a genus of Xanthomyza and a Species of phyriga.