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The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports nutrients from and then exports them back to the atmosphere and ocean floor. A marine food web is a food web of marine life. At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.
Top row: unaffected fish; bottom row: fish preyed upon by the carnivorous alga Pfiesteria shumwayae. Predatory dinoflagellates are predatory heterotrophic or mixotrophic alveolates that derive some or most of their nutrients from digesting other organisms. About one half of dinoflagellates lack photosynthetic pigments and specialize in ...
Marine algae can be divided into six groups: green, red and brown algae, euglenophytes, dinoflagellates and diatoms. Dinoflagellates and diatoms are important components of marine algae and have their own sections below. Euglenophytes are a phylum of unicellular flagellates with only a few marine members. Not all algae are microscopic.
Algae can be used to capture fertilizers in runoff from farms. When subsequently harvested, the enriched algae can be used as fertilizer. Aquaria and ponds can be filtered using algae, which absorb nutrients from the water in a device called an algae scrubber, also known as an algae turf scrubber. [129] [130]
The food web's microbial interactions are varied and diverse. Predation, rivalry, and symbiotic connections are some of these interactions. For instance, certain bacteria and algae create mutualistic relationships in which the bacteria give the algae vital nutrients, and the algae give the bacteria organic carbon.
The three basic ways in which organisms get food are as producers, consumers, and decomposers. Producers are typically plants or algae. Plants and algae do not usually eat other organisms, but pull nutrients from the soil or the ocean and manufacture their own food using photosynthesis. For this reason, they are called primary producers
Nutrients from fertilizers and animal waste can move from Florida farms to waterways, fueling harmful algal blooms. But assessing farms’ nutrient pollution – and gauging the success of the ...
One outcome is the manifestation of algae blooms or eutrophication, primarily triggered by runoff from land sources. This leads to an excessive nutrient influx, fostering the overgrowth of algae. This leads to an excessive nutrient influx, fostering the overgrowth of algae.