Sentences with phrase «pelagic food»

Grazing by these species would probably drive the ecosystem toward a pelagic food chain.

Blue whales and humpback whales are most frequently found near the islands in the summer and fall, when strong upwelling may support a rich pelagic food web.

This doctoral dissertation thus aimed to assess the influence of OA on biogeochemical cycles of elements in natural pelagic food webs of several trophic levels (up to fish larvae) over extended time scales of weeks to months.

Citation: Rocio I. Ruiz - Cooley, Tim Gerrodette, Paul C. Fiedler, Susan J. Chivers, Kerri Danil and Lisa T. Ballance; Temporal variation in pelagic food chain length in response to environmental change; Science Advances, 2017; 3 (10): e1701140; DOI: 10.1126 / sciadv.1701140.

«We documented for first time marked changes in the pelagic food web length in response to various natural and anthropogenic related stressors,» said lead author Rocio I. Ruiz - Cooley, formerly of NOAA Fisheries» Southwest Fisheries Science Center and now at Moss Landing Marine Laboratories.

Not exact matches

The effects of ocean acidification on a pelagic community and their impacts on food webs and biogeochemical cycles were studied in a long - term mesocosm experiment conducted in the Gullmar Fjord at the west coast of Sweden.

«The area still has healthy shark populations, and released reef or pelagic fish will simply be fast food for sharks,» he cautions.

Often, large pelagics attracted by the food grace the diver's presence as you get to watch an unbelievable show of cat and mouse as the sardines move and change shapes.

Currents here are much stronger as well, providing an ample supply of food for the larger pelagic's such as giant mantas and the elusive whale shark.

Meanwhile, industrial fisheries operating in tropical regions are scooping up enormous amounts of fish anchovies, herring, mackerel and other small pelagic forage fish to feed to farmed salmon or turn into animal feed or pet food, another study reported this week.

At least four key findings from these projects relating to arctic heterotrophic food web, pelagic - benthic coupling and biodiversity have emerged: (1) Contrary to a long - standing paradigm of dormant ecosystems during the long arctic winter, major food web components showed relatively high level of winter activity, well before the spring release of ice algae and subsequent phytoplankton bloom.

A long - lived paradigm in polar oceanography is that arctic pelagic ecosystems, characterized by short food webs, remain in a dormant state throughout most of the winter season beneath the sea - ice cover, which can last 8 — 10 months in some regions.

Ocean warming and increasing acidity are threatening the ecosystems of coral reefs, pelagic micro-organisms, and food chains.

Given the lack of detailed proxy records to trace simultaneously biochemical baselines and length of food webs, assessing the extent to which biogeochemical cycling and community structure in pelagic ecosystems have changed over the past century is difficult, as is attributing change to natural cycles versus anthropogenic disturbances.

It is speculated that these effects can control the spatiotemporal distribution of magnitude and nutritional quality of the flux of food particles to the benthic and benthic - pelagic communities at and near tall seamounts.