Chapter 6. Quality Management in Oceans
Marine conservation, also known as ocean conservation, is the preservation and protection of
habitats in oceans and seas by planned management to avoid overexploitation of these resources.
Marine conservation is focused on the study of marine plant and animal resources, as well as
ecosystem functions, and is inspired by environmental manifestations such as species extinction,
habitat destruction, and changes in ecosystem functions, with an emphasis on reducing human-
caused harm to marine habitats restoring damaged marine habitats and protecting marine life's
endangered animals and ecosystems Marine conservation is a relatively recent discipline that
emerged in response to biological concerns such as extinction and the evolving existence of marine
ecosystems.
The presence or absence of any amount of contaminants in ocean waters is referred to as marine
water quality. Oil, sedimentation, waste, nutrients, heavy metals, and thermal emissions are some of
the more significant contaminants. Monitoring the water quality of the ocean necessitates a number
of tests. Temperature, salinity, density, light transmission, dissolved oxygen concentration, and
chlorophyll concentration are among them (an indicator of the amount of phytoplankton in the
water). In the lab, water samples are tested for the presence and concentration of bacteria,
chlorophyll, nitrate, nitrite, ammonium, orthophosphate, and silicate are all examples of nitrogen
compounds. The Clean Water Act, the Water Quality Act, and the Ocean Dumping Act have all been
passed to improve the quality of marine water. Several non-profit organizations still keep an eye on
ocean water safety and educate the public about it. To decide how to better preserve and maintain
marine organisms and habitats, marine conservationists use a combination of scientific concepts
derived from marine biology, ecology, oceanography, and fisheries science, as well as human factors
such as demand for marine resources, maritime law, economics, and policy. Marine conservation is a
branch of conservation biology that focuses on the oceans. Goal 14 of the Sustainable Development
Goals addresses marine conservation by ensuring the sustainable use of marine resources for long-
term development.
Historical Background and Scientific Foundations
Human activities have a variety of effects on water quality, and as a result, the idea of water quality
has arisen as a research term as well as a term that can be used in environmental policy legislation.
The importance of water quality in the marine environment differs from that of water quality in the
freshwater environment, where one of the main issues is the quality of drinking water. Water quality
is often linked to the presence or absence of contaminants in the aquatic environment. Pollutants
are chemical, biological, or physical pollutants that have an effect on every part of the environment.
Oil, sediments, waste, nutrients, heavy metals, and thermal emissions are some of the most
significant contaminants in coastal waters.
Oil seeps into the ocean naturally, but the amount of oil that enters the sea has already surpassed
normal levels. Oceanographic ecologists noted as early as 1970 that pulling a net through the
ocean's surface without collecting some sort of tar or oil was unusual. Each year, about a quarter of
a percent of all oil made, or about 6 million metric tons, ends up in the ocean. Shipping oil from one
location to another accounts for a considerable amount of oil input. Runoff from city streets and
sewers is another critical input. Oil in coastal waters wreaks havoc on water quality by clogging
animal feeding systems, killing larvae, and obstructing available sunlight for photosynthesis. Tiny
pieces of soil or sand that join the ocean as a result of erosion are known as sediments. Natural
weathering of rocks causes erosion, and human activities also worsen erosion. Deforestation and
