Diatoms Dominate and Alter Marine Food-Webs When CO2 Rises
نویسندگان
چکیده
منابع مشابه
Fishing through marine food webs.
A recurring pattern of declining mean trophic level of fisheries landings, termed "fishing down the food web," is thought to be indicative of the serial replacement of high-trophic-level fisheries with less valuable, low-trophic-level fisheries as the former become depleted to economic extinction. An alternative to this view, that declining mean trophic levels indicate the serial addition of lo...
متن کاملFishing down marine food webs
The mean trophic level of the species groups reported in Food and Agricultural Organization global fisheries statistics declined from 1950 to 1994. This reflects a gradual transition in landings from long-lived, high trophic level, piscivorous bottom fish toward short-lived, low trophic level invertebrates and planktivorous pelagic fish. This effect, also found to be occurring in inland fisheri...
متن کاملMarine Plankton Food Webs and Climate Change
• Some plankton, such as diatoms, grow better at cooler temperatures. Warming may cause other, less palatable, species to replace them, depriving zooplankton and menhaden of their primary food source. • Because phytoplankton are linked to freshwater and nutrient inputs, draught will likely decrease their abundance. Also, when nutrients are reduced, smaller phytoplankton replace diatoms, and the...
متن کاملFishing down Marine Food Webs: an Update
One of the major ecosystem impacts offishing is the selective extirpation oflarge, long-lived fishes and their replacement in the ecosystem and in fisheries catches by small, short-lived fishes and invertebrates. As large fish tend to be top-predators, feeding on smaller' fishes while smaller fish and invertebrates feed on plankton and/or detritus, this process, recently shown to be operating g...
متن کاملCommentary: Fishing Down Marine Food Webs
Most readers not already committed to the arcane practices of fish 'stock assessment' (the applied part of fisheries science) will probably assume that the subject matter covered by Ware is central to fisheries management. Strangely, this is not so: stock assessments are usually performed on the basis of trends in the catches of single species, and other fisheries-derived data, without referenc...
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ژورنال
عنوان ژورنال: Diversity
سال: 2019
ISSN: 1424-2818
DOI: 10.3390/d11120242