Sentences with phrase «global ocean food web»

The scientists developed a mixotrophic model of the global ocean food web, at the scale of marine plankton, in which they gave each plankton class the ability to both photosynthesize and consume prey.

If that's the case, «there is potential for this plastic to enter the global ocean food web,» says Carlos Duarte, an oceanographer at the University of Western Australia, Crawley.

Not exact matches

This global biological recordbased on daily observations of ocean algae and land plants from NASAs Sea - viewing Wide Field - of - View Sensor (SeaWiFS) missionwill enable scientists to study the fate of atmospheric carbon, terrestrial plant productivity and the health of the oceans food web.

The researchers looked specifically at the average fishing revenue in 106 Alaskan communities for 10 years before and after 1989, a year when the North Pacific Ocean experienced a significant shift in productivity and abrupt changes in the composition of marine food webs, while at the same time the global price for salmon dropped because of competition from farm - raised fish.

«Changes in spawning timing and poleward migration of fish populations due to warmer ocean conditions or global climate change will negatively affect areas that were historically dependent on these fish, and change the food web structure of the areas that the fish move into with unforeseen consequences,» researchers wrote.

Global warming is increasing ocean temperatures and harming marine food webs.

Now researchers at MIT and Bristol University in the United Kingdom have found that these microscopic, mixotrophic organisms may have a large impact on the ocean's food web and the global carbon cycle.

Ocean acidification and other aspects of global climate change are about to alter the food web — with consequences for all life on earth.

In recent decades, much research on these topics has raised the questions of «tipping points» and «system flips,» where feedbacks in the system compound to rapidly cause massive reorganization of global climate over very short periods of time — a truncation or reorganization of the thermohaline circulation or of food web structures, for instance, caused by the loss of sea ice or warming ocean temperatures.

report that ocean sediment cores containing an «undisturbed history of the past» have been analyzed for variations in PP over timescales that include the Little Ice Age... they determined that during the LIA the ocean off Peru had «low PP, diatoms and fish,» but that «at the end of the LIA, this condition changed abruptly to the low subsurface oxygen, eutrophic upwelling ecosystem that today produces more fish than any region of the world's oceans... write that «in coastal environments, PP, diatoms and fish and their associated predators are predicted to decrease and the microbial food web to increase under global warming scenarios,» citing Ito et al..

As of 2010, the global population of phytoplankton, the microscopic organisms that form the basis of the ocean's food web, has fallen by about 40 per cent since 1950.