Sentences with phrase «species of plankton»

Most climate change scenarios foresee a shift or expansion of the ranges of many species of plankton, fish and invertebrates towards higher latitudes, by tens of kilometres per decade, contributing to changes in species richness and altered community composition.

If our climate continues to warm at today's rate, scientists expect North Sea plankton that respond to temperature cues to bloom even earlier in the coming decades.7 With a growing mismatch in life cycles among various species of plankton, as well as further climate - induced shifts in their abundance and distribution, effects on the North Sea ecosystem — including cod — are projected to be considerable.7, 8

If several important species of plankton thrive as a result of more carbon dioxide, that's fabulous.

Researcher Peter Ross and his colleagues found plastic litter in the digestive systems of two key species of plankton that are eaten in large numbers by salmon and baleen whales.

Not exact matches

If we had to choose between the survival of whales as a species and that of plankton, we would rightly choose the plankton.

The species, native to the Caspian and Black Sea basins, was well known on that side of the Atlantic for its ability to fuse to any hard surface, growing in wickedly sharp clusters that can bloody boaters» hands and swimmers» feet, plug pipes, foul boat bottoms and suck the plankton — the life — out of the waters they invade.

But dictating the species composition of a plankton bloom and its aftermath remains beyond the ken of marine biology, causing one researcher involved in the successful 2004 effort, marine biologist Victor Smetacek of the Alfred Wegener Institute for Polar and Marine Research in Germany, to call it beyond control at this stage.

An international team of scientists have discovered two new plankton - eating fossil fish species of the genus called Rhinconichthys (Rink - O - nik - thees) from the oceans of the Cretaceous Period, about 92 million years ago, when dinosaurs roamed the planet.

Tamara Shiganova of the Russian Academy of Sciences noted that two species — one apparently native and the other introduced from the western Atlantic — now appear in often alternating blooms, vacuuming up the plankton that feeds young fish.

Out of the vast diversity of plankton in the oceans, the worst offenders are a few species of diatoms, dinoflagellates and cyanobacteria, collectively called harmful algae.

Taxonomists are cleaning up and adding to the book of life on hundreds of thousands of known marine species — from plankton to sperm whales

One reason is that the nutrients and plankton in the waters of the Great Lakes are not merely limited, they are crashing, due to a different exotic species, the zebra mussel, and its cousin, the quagga mussel, two invaders that stowed on ships from Europe in the 1980s.

When these species invade, they reduce the amount of plankton available to feed native fish.

In recent years, an algae - filled plankton species has been changing the ecology of these waters.

One of the key findings from the research expedition is that temperature shapes which species are present in a given plankton ecosystem, a fact that could take on increasing importance in the face of climate change.

Gipsi Lima - Mendez of the University of Leuven in Belgium, and a senior author on another study in the Tara package, and colleagues developed a map of more than 90,000 plankton species interactions.

But invisible changes may be the most threatening to human food sources, beginning with the tiny species like plankton that inhabit the bottom of the oceans» food chain.

New genetic analyses of tropical marine microorganisms have revealed that some species of single - celled plankton are converting significant amounts of nitrogen from the air into nutrients, helping to fortify the base of the ocean's food pyramid.

Stout infantfish were captured in a plankton net on the Great Barrier Reef in Australia by a field researcher in 1979, then overlooked for more than two decades until H. J. Walker, a senior museum scientist at the Scripps Institution of Oceanography, and William Watson of the National Marine Fisheries Service, realized they were an unknown species.

Plankton species, the foundation of the marine food web, have shifted back slightly toward fat - rich, cool - water species that improve the growth and survival of salmon and other fish.

With warmer equatorial waters reducing plankton abundance and spurring many fish species, notably bigeye and skipjack tuna, to migrate toward the poles, the waters around Wake and Johnston, 1600 kilometers north of the equator, «are precisely where you want to have a protected area,» says Robert Richmond of the University of Hawaii at Mānoa.

Besides Planktophaga minuta (which translates to small plankton eater), an additional six species of carp have been discovered in Lake RhinChua.

To test this, Rick Relyea, a biologist at the University of Pittsburg in Pennsylvania, simulated a pond ecosystem by filling 1000 - liter tanks with well water, plankton, various tadpole species, and other organisms at the same densities found in nature.

The report found that ocean warming is affecting a multitude of ocean processes, including breeding and migration patterns of ocean species such as plankton, whales and fish.

In a study published today in the journal Nature Climate Change, the researchers report that increased ocean acidification by 2100 will spur a range of responses in phytoplankton: Some species will die out, while others will flourish, changing the balance of plankton species around the world.

Ammonites, which were free - swimming molluscs of the ancient oceans and are common fossils, went extinct at the time of the end - Cretaceous asteroid impact, as did more than 90 per cent of species of calcium carbonate - shelled plankton (coccolithophores and foraminifera).

From microscopic plankton to species» interactions in the marine ecosystem and from elemental biogeochemical cycling to the consequences for economy and society: The German project BIOACID (Biological Impacts of Ocean Acidification) analyses the problem of ocean acidification in its entire spectrum.

The new research published in the journal Science Advances examined the skin cells of common dolphins for chemical clues about the length of the marine food chain, which begins with tiny plankton and continues as species eat them, and other species eat those species.

«While many branching corals dominate under normal pH conditions offering ample hiding space for the different species of zooplankton, ocean acidification shifts the community to large, massive bouldering corals, which offer the reef - associated plankton little opportunity for hiding».

The plankton, in turn, attracts a vast array of marine life, providing feeding as well as spawning grounds for myriad pelagic species, including some that have migrated across wide oceanic areas.

SEE ALSO Algal Blooms, Harmful; Algal Blooms in the Ocean; Carbon Dioxide in the Ocean and Atmosphere; El NiÑo and La NiÑA; Food from the Sea; Life in Extreme Water Environments; Human Health and the Ocean; Human Health and Water; Ocean Biogeochemistry; Ocean Currents; Plankton; Pollution by Invasive Species; Pollution of the Ocean by Sewage, Nutrients, AND Chemicals.

At the start of the experiment in late September, the conditions were truly oligotrophic: «The nutrient concentrations were hardly above the detection limit, and the plankton community was dominated by tiny algal cells and microzooplankton species.

The plankton - rich waters are home to a number of species of fish, sea turtles, and even whales.

There are several popular diving sites around Muscat because of the water being Plankton - rich and attracting several species of fish..

Elsewhere in the oceans, the environmental changes during the PETM led to shifts in the distribution of plankton groups, with tropical species invading the high latitudes and high - latitude species dwindling in abundance.

The species is an extinct form of dinoflagellate — a group of single - celled plankton, some of which today give rise to toxic blooms known as red tides.

At least one past global hot spell widely attributed to a natural spike in greenhouse gases, the Paleocene - Eocene Thermal Maximum 55.8 million years ago, appeared to cause a mass die - off of some marine plankton, but other forms thrived, as did mammals and other terrestrial species, specialists on that period say.

I wonder, given the recent news about the various ways plankton actively affect the oceans, including churning the upper 100 meters, if any of the cycles could reflect big changes in which species predominate over time.

We don't have good information on the base of the food chain for most of the past — that's just «noise» but now that we start having ways to track trends in primary productivity — what's being made out of sunlight, water and CO2, by which organisms, and how fast do their populations change (remembering that some plankton populations turn over a new generation in a couple of weeks so relative numbers of different species can change that fast across the oceans).

Modern plankton foraminifera become inhibited below pH 7.6 - 7.8, thus only if some of these species recover their ability to grow in less alkaline, CO2 - rich waters, then there will be no problem over the centuries to come.

Other aspects of global warming's broad footprint on the world's ecosystems include changes in the abundance of more than 80 percent of the thousands of species included in population studies; major poleward shifts in living ranges as warm regions become hot, and cold regions become warmer; major increases (in the south) and decreases (in the north) of the abundance of plankton, which forms the critical base of the ocean's food chain; the transformation of previously innocuous insect species like the Aspen leaf miner into pests that have damaged millions of acres of forest; and an increase in the range and abundance of human pathogens like the cholera - causing bacteria Vibrio, the mosquito - borne dengue virus, and the ticks that carry Lyme disease - causing bacteria.

«Southern Ocean acidification via anthropogenic CO2 uptake is expected to be detrimental to multiple calcifying plankton species by lowering the concentration of carbonate ion (CO32 − to levels where calcium carbonate (both aragonite and calcite) shells begin to dissolve.

Warming of the North Sea and its effects on plankton can influence commercially important species further along the food chain that rely on plankton for food.

Plankton forms the main food of many ocean species, and fisheries could be badly hit by the loss of these micro-organisms as a result of warmer waters, according to the paper, published this week in the British journal Nature... Other factors that influence phytoplankton growth include [iron] dust blown from the land, and variations in solar radiation.

The loss of sea ice changes ecosystems, opening the door to invasive species, and alters habitat and plankton blooms, affecting Alaska's commercial fishing industry, which leads the United States in the value of its catch.

Acidity reduces the capacity of key plankton species and shelled animals to form and maintain shells and other hard parts, and therefore alters the food available to important fish species.136, 139,140 The rising acidity will have particularly strong societal effects on the Bering Sea on Alaska's west coast because of its high - productivity commercial and subsistence fisheries.17, 141

Increased carbon dioxide has already lowered the pH of the surface ocean; this is expected to have a negative effect on survival of plankton, the base of the marine food chain, and the growth and health of corals, which form biodiverse reefs in shallow waters of the Hawaiian Islands and Florida, and deep reefs in Alaska and the Southeast U.S. Invasive species are increasingly being recognized.

Areas occupied by marine species including fish, corals and plankton are moving by an average of 72 kilometers (45 miles) a decade, typically toward the poles, the study by researchers at 17 institutions in 8 countries said today.

ArcOD has begun such research, barcoding 360 Arctic species of benthos, plankton, and fish, many from Alaska [322].

That puts we humans in the position of competing directly with whales and all the other plankton grazers, even endangered species.