Sentences with phrase «lake food web»

«What we found is that the Messel lake food web, with 94 taxa and 517 links, looks very much like a modern food web,» says SFI Professor Jennifer Dunne.

Thus the entire lake food web is impacted by the degree of ice cover from year to year and the degree of winter productivity.

And too much CO2 in the water may leave water fleas, an important part of many lake food webs, too sleepy to fend off predators.

Not exact matches

Scientists uniformly agree that whole - lake research offers the best evidence to guide policy, Blais wrote, while «small - scale experiments are inadequate to address issues related to ecosystem services, food web structure, land - water interactions, air - water interactions, shoreline communities, and migratory species.»

However, they suggest sustainable management of the Lake Tanganyika fishery requires taking into account the overarching problem that as the climate warms, the algae — the basis for the lake's food web — will decreLake Tanganyika fishery requires taking into account the overarching problem that as the climate warms, the algae — the basis for the lake's food web — will decrelake's food web — will decrease.

This nearly vodka - clear water is not the sign of a healthy lake; it's the sign of one in which the bottom of the food web is collapsing.

Under some conditions, the plankton - feasting mussels can now «filter» all of Lake Michigan in less than two weeks, sucking up the life that is the base of the food web and making its waters some of the clearest freshwater in the world.

And at high global latitudes, cold lakes normally covered by ice in the winter are seeing less ice year after year — a change that could affect all parts of the food web, from algae to freshwater seals.

Lake Michigan's open - water food web has changed significantly since the 1970s, becoming less productive as a result of decreased nutrients such as phosphorus, a process called oligotrophication.

In lakes, elevated chloride levels have been shown to alter the composition of fish, invertebrates, and the plankton that form the base of the aquatic food web.

On the other hand, if the lake is warmed from below by ample geothermal heat, then there could be many more kinds of organisms, possibly even a food web.

Carpenter and his colleagues report online today inScience that these fluctuations were a warning that the lake's food web is changing.

Invasive Asian carp consume plankton from the base of the food web and reproduce prolifically which could pose substantial environmental risks and economic impacts to the Great Lakes if they become established.

Combining these measurements with estimates of the populations of algae, zooplankton, and fish taken from regular net catches, the researchers report that they detected unusual oscillations in the amount of algae in the lake more than a year before the lake's food web shifted.

Now, in the first study of its kind, researchers have pinpointed early warning signs for the disruption of a food web in a lake.

We gradually added top predators to a lake over 3 years to destabilize its food web.

Over a few thousand years, this process gave rise to a complex food web in Lake Victoria, as the new species, in turn, influenced their environment.

While the Jefferson Project is focused on the influence of increased salinity in Lake George, wetlands, streams, ponds, and vernal pools in the surrounding watershed have links to the Lake George food web.

Data currently being collected about the impact on Lake Turkana's food web and fisheries from hydroelectric and agriculture projects may prove vital to a growing global population whose fresh water sources have become increasingly taxed.

The production of huge biomass quantities in these distinctive soda lakes and the food web that this green algae supports are also of international scientific value, and provide critical support to birds, which visit the property in large numbers as part of their migration in response to seasonal and episodic changes in the environment.

And while we don't know how they might respond in the Great Lakes, we do know from their history of invasions elsewhere in the U.S. and world that they are capable of reaching extremely high densities and having dramatic negative impacts on the ecology and food webs of the invaded waters.