Temperature is among the major determinants to influence phytoplankton growth rates, nutrient stoichiometry, and spatial and temporal distribution in freshwater systems.
What are some factors that may influence the biodiversity of plankton?
The influence of these factors on the seasonal abundance and diversity of plankton biotypes varies significantly, with physical factors like temperature and light intensity being the most important and chemical factors like dissolved oxygen, pH, salinity, hardness, electrical conductivity and nutrient level being of …
What eats plankton in the Hudson River?
Sphaeriids: These are very small freshwater clams, often called fingernail or pea clams. They filter feed, eating phytoplankton and the smallest of the zooplankton. Rotifers: These tiny zooplankton (at left) are an important food source for Hudson River animals. They are among the smallest zooplankton in the river.
How does heat affect phytoplankton?
Moreover, phytoplankton growth rates increases with increasing of temperature, almost doubling with each 10°C increase in temperature (Q10 temperature coefficient) . Furthermore, the growth rate of phytoplankton is higher than that of herbivorous grazers at low temperatures [51,52].
How did Cary Institute scientists measure phytoplankton?
As in most aquatic ecosystems, a foundation of the Hudson River’s food web (see Figure 2) is phytoplankton production. Scientists determine phytoplankton abundance by measur – ing concentrations of chlorophyll-a, which is a light-sensitive pigment produced by phytoplankton.
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 factors that can affect the abundance and distribution of plankton in aquatic ecosystem?
The abundance of phytoplankton in aquatic can fluctuate in type and amount due to differences in nutrient content. Predation by zooplankton or herbivorous fish and tidal occurrence of sea water. Tides can affect plankton abundance and distribution. In high tide conditions.
What factors impact the ecology of the Hudson River?
Abiotic factors in an aquatic environment like the Hudson River include the temperature of the water, how much oxygen it contains, how acid or basic it is (pH), how fast or slowly it moves, and how much sunlight penetrates the surface.
Is there plankton in the Hudson River?
Just one drop of Hudson River water holds multitudes of drifting plants and animals called plankton. Students learn why plankton are vital to the Estuary ecosystem through interactive microscope activities. Available in-person or virtually.
How did the loss of phytoplankton and zooplankton affect the ecology of the river?
How did the loss of phytoplankton and zooplankton affect the ecology of the river? (Answer: Half the ﬁ sh food disappeared and ﬁ sh populations fell.)
What affects phytoplankton?
Phytoplankton growth depends on the availability of carbon dioxide, sunlight, and nutrients. … Other factors influence phytoplankton growth rates, including water temperature and salinity, water depth, wind, and what kinds of predators are grazing on them.
Do plankton like warm or cold water?
Where phytoplankton grow depends on available sunlight, temperature, and nutrient levels. Because cold waters tend to have more nutrients than warm waters, phytoplankton tend to be more plentiful where waters ware cold.
How does global warming affect zooplankton?
Zooplankton are beacons of climate change for a host of reasons. First, zooplankton are poikilothermic, so their physiological processes, such as ingestion, respiration, and reproductive development, are highly sensitive to temperature, with rates doubling or tripling with a 10°C temperature rise (Mauchline, 1998).