Sentences with phrase «larger ocean organisms»

Scientists are finding that, in general, larger ocean organisms such as fishes have less tolerance for temperature change than the microorganisms they consume, such as phytoplankton.

Not exact matches

Concentrations of selenium, a vital element for many organisms at the base of today's ocean food chain, dropped substantially in seawater in advance of three of Earth's largest die - offs, a new study suggests.

SeaWiFS data show that photosynthesizing organisms have declined in certain ocean gyres (large - scale surface current patterns), said Jim Yoder, a scientist at the Woods Hole Oceanographic Institution, in a NASA article commemorating the end of SeaWiFS's mission.

When that edge moves off the continental shelf into deep open ocean waters, the productivity drops off and the marine organisms that feed larger wildlife are out of reach, scientists say.

What we see as a mere light in the sea is a phenomenon occurring in nearly all the organisms living in the seas and oceans, from bacteria to large fish, and which impacts the behaviour and dynamics of the entire system.

Given the obvious concerns for human ecological health — in terms of climate change, heavy metal toxification, indoor air quality, air pollution, plastics in the oceans, and things like that — there will be a large - scale trend to buildings that start to act like organisms.

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.

The oceans comprise the world's largest ecosystem, and cyanobacteria — single - celled organisms that get their energy through photosynthesis — are the keystone group.

The 2.52 billion - year - old sulfur - oxidizing bacteria are described by Czaja as exceptionally large, spherical - shaped, smooth - walled microscopic structures much larger than most modern bacteria, but similar to some modern single - celled organisms that live in deepwater sulfur - rich ocean settings today, where even now there are almost no traces of oxygen.

«We think of plankton as the tiny alphabet soup of the ocean, floating around passively while larger organisms eat it,» says biologist Gregory Gavelis, who lead the study while a researcher at the University of British Columbia (UBC).

Recent research has shown that the expected doubling of CO2 concentrations could inhibit the development of some calcium - shelled organisms, including phytoplankton, which are at the base of a large and complex marine ecosystem (see Ocean acidification: the other CO2 problem).

As one of the largest national research programmes on ocean acidification, BIOACID has contributed to quantifying the effects of ocean acidification on marine organisms and their habitats, unravelling the mechanisms underlying the observed responses, assessing the potential for evolutionary adaptation, and determining how these responses are modulated by other environmental drivers.

Microbiology is actually a vital part of marine biology since the ocean depths contain not only large animals, but also organisms that can not be seen with the naked eye.

A new study shows that nitrogen - feeding organisms exist all over the deep ocean, and not just in large oxygen - depleted «dead zones,» changing the way we think about the delicate nitrogen cycle.

Presenting large - scale installations that resemble elements of nature under a microscope and cell - like forms or organisms from the depths of the ocean, Donovan's body of work derives from recognisable everyday items, such as Scotch Tape, drinking straws, paper - plates, needles, plastic rods and toothpicks.

Also true is there exist heat - tolerant corals, corals that are regularly exposed to (and routinely survive) the extreme stress of finding themselves out in the tropical air at low tide, and many ocean organisms that live through large swings in pH through tidal cycles.

But seen the environmental global CRISIS of GLOBAL WARMING and its devastating climatological impact, I would recommend as an environmental policy - expert that Both NATURAL plankton will be bred in shallow waters as carbondioxide inhibitors in a large volume on the one hand and let nature goes its course in the seas and oceans so that sea - organisms / life - forms / mamals will not become extinct due to (for them) food poisoning.

Over the next 75 to 100 years, ocean acidification could supersize blue crabs, which may then eat more oysters and other organisms and possibly throw the food chain of the nation's largest estuary out of whack.

Although the work was carried out in the lab, the research is the first to show that migrating zooplankton — or any organism — can create turbulence at a scale large enough to mix the ocean's waters.

In Lab 6A, you learned that the ocean's biological pump sequesters large amounts of carbon dioxide in shell - building organisms that eventually die, sink and become part of deep ocean sediments for very long time scales - thousands to millions of years.

«This is a problem in the oceans, in large part, because many marine organisms make shells out of calcium carbonate (think corals, oysters), and their shells dissolve in acid solution,» said Werne.

Will large populations of rapidly reproducing organisms in the ocean be affected by a change of pH from about 8.1 to about 7.7?

As a smaller fraction of the excess CO2 goes into the oceans, a larger fraction may remain in the atmosphere, and the chemical changes in seawater that can affect organisms will continue to grow in lockstep with the relentless increases in the excess CO2 in the overlying atmosphere caused by human activities.

Ocean acidification adversely affects large number of marine organisms such as corals, marine plankton, and shellfish.