What biotic and abiotic factors regulate the abundance of zooplankton?
The current prevailing theory of diel vertical migration (DVM) of zooplankton is focused largely on two biotic drivers: food and predation. Yet recent evidence suggests that abiotic drivers such as damaging ultraviolet (UV) radiation and temperature are also important.
What abiotic factors affect plankton?
Salinity, dissolved oxygen and pH may be responsible for the variations in phytoplankton and zooplankton community structure.
What are the three abiotic factors that control phytoplankton growth?
Abiotic environmental factors, such as water temperature (Paver and Kent 2017; Yannarell and Triplett 2005), pH (Liu et al. 2015), total nitrogen (Tian et al. 2009), total phosphorus (Fraser et al.
What are the factors affecting the abundance of zooplankton?
Some important local factors influencing zooplankton species richness and abundance have been identified: lake area and primary productivity (Dodson, 1991; 1992; Dodson et al., 2000), water quality (Jeppesen et al., 2000; Cottenie et al., 2001), lake depth (Keller and Conlon, 1994), latitude (Hebert and Hann, 1986), …
What biotic factors affect phytoplankton?
A great number of biotic (grazing pressure, competitive exclusion, predation) and abiotic (temperature, light, nutrients, water regime) factors effect community structure of phytoplankton in aquatic ecosystems.
Is the temperature biotic or abiotic?
Temperature is an abiotic factor within an ecosystem. Abiotic factors are the parts of an ecosystem that are non-living, such as weather, temperature,…
What are abiotic and biotic factors?
Biotic and abiotic factors are what make up ecosystems. Biotic factors are living things within an ecosystem; such as plants, animals, and bacteria, while abiotic are non-living components; such as water, soil and atmosphere.
What biotic factors are essential in maintaining the diversity in an ecosystem?
A list of biotic factors includes those organisms that are producers, consumers and decomposers. The producers provide the food, generally in the form of plant life. Consumers eat the producers, or in the case of carnivores, other consumers.
What causes phytoplankton to grow out of control?
Most phytoplankton are buoyant and float in the upper part of the ocean, where sunlight penetrates the water. … However, under certain environmental conditions, such as the introduction of too many nutrients from land based sources of pollution, phytoplankton may grow out of control and form blooms.
How phytoplankton does regulate global warming?
Phytoplankton has an impact on climate change by reducing atmospheric CO2 levels through the sinking of produced organic and inorganic matter to the deep ocean. … Reduced frequency of cold winters and unusual types of phytoplankton succession have also been reported in some regions.