How does this phenomena affect biological diversity in marine ecosystems?
The most critical (current or potential) contributors to changes in marine biodiversity are now recognized to be the following: fishing and removal of the ocean’s invertebrate and plant stocks, many of which are overexploited; chemical pollution and eutrophication; physical alterations to coastal habitat; invasions of …
What factors affect marine ecosystems?
Biotic factors include plants, animals, and microbes; important abiotic factors include the amount of sunlight in the ecosystem, the amount of oxygen and nutrients dissolved in the water, proximity to land, depth, and temperature. Sunlight is one the most important abiotic factors for marine ecosystems.
How diverse is the marine ecosystem?
In its simplest form, biodiversity or biological diversity is therefore ‘Life on Earth’ and includes marine biodiversity ‘Life in the Seas and Oceans. ` The marine environment has a very high biodiversity because 32 out of the 33 described animal phyla are represented in there.
What are marine ecosystems and biodiversity?
Marine biodiversity is an aggregation of highly inter-connected ecosystem components or features, encompassing all levels of biological organization from genes, species, populations to ecosystems, with the diversity of each level having structural and functional attributes (Table 1).
What is coral bleaching how these phenomena affect biological diversity in marine ecosystems?
When corals overheat, they react to the stress by expelling their algae, which results in coral bleaching. Bleaching leaves corals vulnerable to disease, stunts their growth, affects their reproduction, and can impact other species that depend on the coral communities. Severe bleaching kills them.
What are the factors that affect the distribution and diversity of marine plankton?
The influence of various factors on the seasonal appearance of phytoplankton differs significantly, with physical factors (such as temperature and light intensity) being the most important and chemical (DO, pH, salinity, total hardness, EC and nutrient level) being of lesser importance (Reynolds, 1984).
What are the environmental factors including physical and biological factors that affect marine life?
These include light availability, oxygen levels, water movement, salinity, density and pH. These conditions often vary from habitat to habitat and will either support or limit the life processes of the marine organisms living there.
Why is greater biodiversity important to the stability of marine ecosystems?
Having diverse ecosystems makes organisms and systems more resilient to changes. Ecosystems that are more resistant are able to then continue to provide the following benefits: Protection of water resources (e.g. Mangrove forests trap silt) Nutrient Storage and Cycling.
What are examples of marine biodiversity?
For example, macroalgae, seagrass and corals form large undersea forests, meadows or reefs that provide habitats for many other species such as molluscs, crustaceans and fish.
Does the marine have high biodiversity?
The world’s oceans contain somewhere between 500,000 and 10 million marine species. bacteria, other microbes and viruses. Much of the biodiversity in the ocean, particularly in the deep sea and in the microbial ocean, is unknown, and up to 2,000 new species are described per year.