This proves that another environmental threat that blue crabs faces are fishing because they may not be a type of fish, but, like most crabs, they are fished, caught and sold. This allows overfishing to be a problem. Not to mention, another environmental threat that this fascinating animal, the blue crab, faces is climate change. Corresponding with the text, “Climate change is another major threat to life in the oceans. Warming ocean waters, rising sea levels, and violent storms disrupt the lives of many species and affect fragile marine ecosystems,” (Digan 14).
This opened a great zone of carbonate substrate for colonization, therefore coral cover remained low and coral recruitment was decreased through March 2001 (R.B. Anonson et al, 2002). Surveys done in October 22-23 showed that all the Lettuce coral were bleached white and by late October some already died. The skeletons stood in their growth stance showing recent death (“the standing dead”). Other surveys done from 1999-2000 revealed the almost total decline in the Lettuce coral and large death in other species (R.B.
Also, toxic algae may be found in the plants that they eat, affecting their gastrointestinal system. Previously, in 1982, over a 10 week period, 39 Florida manatees were found dead in the nearby waters of Southern Florida and in the lower Caloosahatchee River. Only two had died as a result of a boat accident. The rest were tested for the cause of death, and nonspecific lesions of hemorrhage and congestion were identified in the brain tissue. A HABs also concurred with these events.
Therefore, the impact of overfishing and illegal collecting of coral may destroyed the social and economic well-being of the coastal communities who depend on fish for their way of life. Beside, it is also direct overexploitation of fish, intertebrates, and algae for food and the aquarium trade, removal of a species or group of species impacting multiple trophic levels, bycatch and mortality of nontarget species, and change from coral to algal dominance due to reduction in herbivores (Reef Resilience Organisation,
In the world 's coral reefs! There, fish and coral turn ocean waters into a sea of colors. But scientists are worried about the number of threats facing these unique habitats. That 's why they made 2008 the International Year of the Reef. This year, scientists are making extra efforts to teach people about coral reefs and what threatens them.
2007). Through research, it is crucial to find the effect that humans have on sea turtles and what the decreasing population of sea turtles means to the rest of the marine ecosystems and terrestrial ecosystems in which they live. Then it may be concluded if conservation efforts are needed and if so, what needs to further be done to conserve the
19/03/2018 Sumatran Orangutans In Indonesia, Extinct By 2025? By The World Wildlife Fund The Sumatran orangutan population has drastically declined to 7,500 compared to a combined total orangutan population of 230,000 a century ago. This significant decline in population has been evident throughout history since 1950s to this current date. It is very apparent that human action whether it is illegal or legal deforestation is driving these immaculate creatures to extinction. Our constant desire for palm oil, business and infrastructure development in Indonesia has caused this major issue.
Ocean acidification leads to a reduction in the amount of carbonate ions in the water. Many marine animals essential carbonate ions for the calcium carbonate essential to form skeletons and shells. This will disturb their development and ability to reproduce – ultimately threatening their populations.. Falling numbers of less well-known species, like pteropods – tiny swimming snails – have important effects further up the food chain. Pteropods are important sources of nutrition for many types of fish, whales and birds in polar and sub-polar regions.
Five days later, the day known as “Black Tuesday”, another 16 million shares were traded. After multiple waves of panic, and the wake of the stock market crash, production slowed to an alarming level. For the next few years the United States experienced a drop in consumer spending and investment, which caused a decline in industrial output and a steep rise in unemployment. Factories and other businesses were forced to lower wages and fire several employees. By 1933, thirteen to fifteen million Americans were unemployed, and nearly half of the banks throughout the country failed.
1,400 square kilometres of cultivated and grazing land was lost, leaving 113,000 small farming households with nothing to economically support them. 20,000 missing cattle were reported, with many feared to have drowned or contracted disease leading to their death and to the loss of their owners. The initial damage was estimated at $500 million which was 12.5% of the country’s GDP in
These signs show that the bank systems are important for the FKNMS for providing a structural support and high productivity for the biodiversity. Exploitation of these essential fishes and pollution of the water could greatly destroy the bank systems and cause a rippling effect among the ecosystem. Knowing how important these bank systems are, they should receive additional protection through management zones. New management actions will help protect fish and stocks, to ensure the stability of recreational and commercial fisheries. To ensure a higher water quality and sustainable habitats, anchoring activities and vessel discharges will be restricted in the management zones.
Over the past century or so, twenty-two of the fifty states have lost an average of fifty percent of their wetlands, however, Louisiana’s total loss is over ninety percent of the nation’s total. What is somewhat different about Louisiana’s land loss is that it is natural. The land it was built on is naturally inclined to sink over the years. The real problem with this in the last century, is that land is now being lost far faster than it can be replaced. This loss ranges from 0.1 to 11.1 square miles, depending on the place.
Vaquita, the world’s most rare marine mammal, is on the edge of extinction. This little porpoise wasn 't discovered until 1958 and a little over half a century later, we are on the brink of losing them forever. Vaquita are often caught and drowned in gillnets used by illegal fishing operations in marine protected areas within Mexico 's Gulf of California. More than half of the population has been lost in the last three