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The food web in the arctic ocean is somewhat truncated, meaning it is short and simple. Any impacts to key species in the food web can cause exponentially devastating effects on the rest of the food chain as a whole, as they will no longer have a reliable food source.
A food web model is a network of food chains. Each food chain starts with a primary producer or autotroph, an organism, such as an alga or a plant, which is able to manufacture its own food. Next in the chain is an organism that feeds on the primary producer, and the chain continues in this way as a string of successive predators.
Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...
A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
Sea ice algae play a critical role in primary production and serve as part of the base of the polar food web by converting carbon dioxide and inorganic nutrients to oxygen and organic matter through photosynthesis in the upper ocean of both the Arctic and Antarctic. Within the Arctic, estimates of the contribution of sea ice algae to total ...
David George Barber, OC FRSC (28 November 1960 – 15 April 2022) [1] was a Canadian environmental scientist and academic known for his contributions to Arctic science, in particular the study of Arctic sea ice processes. [2] He held the Canada Research Chair in Arctic-System Science at the University of Manitoba. [3]
The Arctic warms at a faster rate, amplifying this effect. Ice is a known storage location for POPs and other chemicals, and when it melts, pollutants risk redistribution through ocean currents. [ 12 ] [ 11 ] Changes in weather patterns are another effect of climate change, which may also alter the pathways through which chemicals are ...
Acidification threatens to destroy Arctic food webs from the base up. Arctic waters are changing rapidly and are advanced in the process of becoming undersaturated with aragonite. [108] Arctic food webs are considered simple, meaning there are few steps in the food chain from small organisms to larger predators.