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In The News

Pike Spawning: Fish Adapt To Habitats And Help Offspring

A study of pike spawning near the Baltic Sea has found that the fish are able to locally adapt to habitats to help ensure the success of their offspring. Researchers at Linnaeus University made the find through a very carefully designed experiment, precise methods of which can be found in the open-access journal PLOS ONE . In a nutshell, scientists at Linnaeus captured members of two subpopulations of pike while they were migrating from the Baltic Sea to two different wetlands nearby to spawn. In one wetland, it features a hard bottom with flooded grassland and submersed vegetation. The other has a soft bottom with more suspended material and less submersed vegetation.

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‘Donut Reef’ Revealed Behind Great Barrier Reef

A LIDAR (light detection and ranging) mapping data effort led by Australian researchers has revealed a previously unstudied reef behind the Great Barrier Reef. But still little is known about the lifeforms that inhabit the region. Laser imagery gathered from devices mounted to Australian Navy airplanes show great fields of unusual circular mounds, each 656 to 984 feet across and up to 33 feet deep at the reef’s center. Because of the shape of its mounds, some have taken to calling it a “donut reef.” The fields of circular rings are Halimeda bioherms, large reef-like geological structures formed by the growth of Halimeda, a common green algae composed of living calcified segments. When they die, the algae form small limestone flakes that resemble white cornflakes.

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Hurricane Hermine: USGS Scientists In Eight States Sampled Through Storm

As Hurricane Hermine developed in the Gulf of Mexico and moved to the northeast, massive storms crossed parts of Florida and other states along the eastern seaboard. U.S. Geological Survey (USGS) scientists in eight states responded to the sudden development, using many different techniques to forecast and track coastal flooding. Working quickly and making decisions based on the National Hurricane Center’s latest forecasts of the storm’s track, agency scientists used sophisticated water level sensors specially designed for fast deployment to measure storm-tide and waves along coastal sections in Florida, the Mid-Atlantic and New England.

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