The droughts and increased heat has had negative impacts on local aquatic invertebrates. Aquatic invertebrates are adapted to survive in a particular range of temperature and habitat. But global warming makes it harder to survive. This could lead to the extinction of several species of aquatic invertebrates which in turn would lead to serious consequences of the ecosystem. Many of the aquatic invertebrates are responsible for keeping the ecosystem clean by feeding on litters.
Estuaries transport dissolved nutrients to coastal zones leading to a high productivity in primary and secondary production. Deviations in production can greatly affect species richness, abundance, and productivity (Goel 2014). Ctenophores are major predators of zooplankton. It is possible that a lack of ctenophore predation in the Barrington River allow zooplankton in the inner bay to survive and matching diversity (Kremer 1979). There may a few places where an error could have been made that would
The constancy and inertia of ecosystems can be readily changed by natural and human disturbances. Natural disturbances such as earthquakes and volcanic eruptions can destroy ecosystems. Depending on the severity, ecosystems may take a long time to recover, such as the slow rate of recovery of Mr St Helen after its volcanic eruption in 1995. However, as natural disturbances do not occur often, or are on a regular basis, such as the el Nino. Human disturbances to the ecosystem however, occur on a regular basis.
A hazard can be defined as natural phenomena that produce negative effects on life. According to Dr Martin Degg at the University of Chester, a natural hazard only becomes a disaster if it threatens humans. In Degg’s model, the hazard circle includes all the physical factors while the factors that make a population vulnerable are mostly human. In other words a hazard that produces a disaster in one population may have only a limited effect on another less vulnerable population. Take for example the two earthquakes that affected Northridge and Haiti.
These diseases, while not as common as respiratory and enteric diseases, are usually more lethal since most viruses and bacteria’s gain virulence as they pass through chains of hosts. Some scholars suggest that civilization and disease travel hand-in-hand, meaning that the incidence of epidemic patterns depend on patterns of human settlement. But this theory is not necessarily the case with diseases from animal hosts. These diseases are usually the result of climate changes and insect and rodent population
Escaped farmed salmon are then capable of spreading these infections to wild Pacific salmon populations. Of course, the big question is, “What can we do about these problems?” The best approach according to Frazer & Lewis (2008; as cited in SeaWeb, 2007), would include “… locating sea cages very far from wild fish” (Abstract), or using a “closed containment” (p. 2) system in order to isolate farmed fish from wild fish. Unfortunately, both options are more expensive than popular methods of aquaculture. Short-term gains from aquaculture and other human interventions appear to outweigh short-term losses, so industry has little incentive to follow more sustainable practices. If these practices continue, then long-term losses may result in the extinction of multiple Pacific salmon species
Wisner, Blaikie and Davis (2004) argue that "disasters occur when hazards meet vulnerability,” meaning that in unpopulated areas hazards can not become disasters as there is no vulnerability (Quarantelli 1998). Without humans being involved, tsunamis are nothing but giant waves; they may modify areas of deserted land and destroy coral reefs but that does not make them disasters. Tsunamis become disasters when humans are involved; when their lives are at risk, their homes are destroyed, their livelihoods are lost etc. In addition, the economic loss caused by tsunamis could also largely effect the country as a whole. This essay will address the factors that affect the quality of human life in the 2011 Japan and 2004 South Asia tsunamis, and what made them become two of the word's biggest disasters.
Firstly, the Everglades are an important ecosystem which reduces flooding and replenish aquifers but human actions are having a huge impact on the landscape. The rapid urban and agricultural development in the area has decreased the size of the wetlands dramatically which affects the organisms found there. This is especially important as it is home to several endangered species. Not only that, but invasive species that threaten existing wildlife by preying on or competing with them. 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.
The ozone protects us from the majority of the harmful rays from the sun and it shields us from most of the sun’s heat. When we first found the oil sands they were covered with trees, shrubs and other plant life, to get to the oil we had to clear-cut. The clear-cutting destroys many habitats of animals. When an animal looses it’s habitat it either dies or it runs to the city, where it can be a potential threat. When we refine or even dig up oil sands we produce harmful chemicals.
Purpose The purpose of this lab is to determine how an invasive species, in this case, the zebra and quagga mussel can have an affect on other species in the same habitat and how this can affect the ecosystem. Introduction A population explosion is caused when there is minimal environmental resistance. Minimal resistance can be caused by a decline in predator population, or by introducing an evasive species. Invasive species can experience a population explosion because they are not controlled right away by the normal environmental restraints of the ecosystem. Zebra and quagga mussels were introduced into the Great Lakes and caused hardship on the ecosystem and in turn partly caused pollution causing effects (My Unique Student Experience,