Marine Coastal Environment

The Mining Impact of Marine Coastal Environment



The Mining Impact of Marine Coastal Environment

Introduction

An aquatic ecosystem is more commonly recognized as a body of water centered around an ecosystem, through which communities of organisms survive and are studied. In previous study, I have learnt to recognize the two main aquatic ecosystems, being freshwater and marine ecosystem. Marine ecosystems supposedly cover about 71% of the Earths visual surface, and it is famously recognized that 97% of the planet is made up of water. Marine ecosystems are different from freshwater ecosystems because they exhibit the occurrence of dissolved compounds in the water, the most common of which are salts. It has been discovered that roughly 85% of the dissolved substance residing in seawater are sodium and chlorine, while seawater itself as 35 parts per thousand salinity. In this paper, I will be thoroughly analyzing the aquatic ecosystems surviving in the worlds waters, and will be examining their different zones through which they survive and their characteristics.

Discussion

These ecosystems are split into seven zones, namely the oceanic, profundal, benthic, coral reefs, salt marshes, hydrothermal vents and intertidal. Apart from this, there are several classes of organisms as well that can be located in marine ecosystems, such as brown algae, dinflagellates, corals, cephalopods, echinoderms, and sharks. Commercial foods are often caught through marine ecosystems, and are mostly obtained through the wild population of fish. As with all ecosystems, there are several issues relating to marine ecosystems as well, such as environmental problems like indefensible misuse of marine resources, as well as pollution, rapidly formulating climate change and construction on coastal areas that seems to only expand, regardless of the countless warnings.

A Freshwater ecosystem only covers about .80% of the earths surface while inhibiting .009% of earths total water. Almost three percent of freshwater ecosystems contain the world's fish species. There is a division between freshwater ecosystems as well, and classifications include lentic, which is slow moving water that can be described as pools, lakes as well as te occasional pond. Lotic ecosystem is fast-moving water, and can be described as streams or rivers. Wetlands are the third classification, and include areas where the soil is saturated for a certain period of time.

Freshwater ecosystems are further divided into zones, such as pelagic which are the offshore waters, and profundal which are shallow waters. Ponds, which characteristically are diminutive lakes that seem to be intergraded with wetlands, are a part of lake as well as water reservoirs. Some lakes are known to contain valuable nutrient and organic sediments that can be commercially used. This process is given the name of Eutrophication. However, eutrophication requires intensive human activity, which means that pollution is often the after effect of undertaking such actions. A freshwater ecosystem contains rivers which are classified by the river bed's gradient of the current. If the water in a river is fast moving and turbulent, it is more often then not a landmine for concentrations of dissolved oxygen, and can ...