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NOAA Great Lakes Food Web Diagrams direct Author NOAA, Great Lakes Environmental Research Laboratory: Mason, Krause, and Ulanowicz, 2002 - Modifications for Lake Superior, 2009.
Trophic cascades are powerful indirect interactions that can control entire ecosystems, occurring when a trophic level in a food web is suppressed. For example, a top-down cascade will occur if predators are effective enough in predation to reduce the abundance, or alter the behavior of their prey, thereby releasing the next lower trophic level from predation (or herbivory if the intermediate ...
The most significant feature is the disruption of fish reproduction. Thus, the population is eventually composed of few, old individuals that eventually die and leave the systems without fishes. [ 2 ] [ 3 ] Acid rain has been especially harmful to lakes in Scandinavia , western Scotland , west Wales and the north eastern United States.
Between 8-18 inches had fallen in lake-effect bands off Lake Ontario, but heavier snows were expected here Saturday. An intense band of snow capable of 2-3 inch-per-hour rates will shift north ...
US and Canadian officials are investigating after a 689-foot ship collided with an underwater object and began taking on water in Lake Superior, the US Coast Guard says.
Scientists can predict tipping points for ecosystem collapse. The most frequently used model for predicting food web collapse is called R50, which is a reliable measurement model for food web robustness. [29] However, there are others: i.e. marine ecosystem assessments can use RAM Legacy Stock Assessment Database.
The first significant lake-effect snowstorm of the season, which buried cities from Michigan to New York under 3-5 feet of snow, will finally begin to wind down on Tuesday after the relentless ...
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.