Images

A photomicrograph depicting the siliceous tests of ten species of marine radiolarians. Upon death, their tests can form siliceous marine sediments known as radiolarian ooze.

An invasive species, the spiny water flea, is likely a primary driver of changes in Lake Huron's food web over the past decade.

Photo of fossil algae (dinocyst). Specimen is about 90 micrometers across.The largest known impact crater in the U.S. lies buried beneath the Virginia Coastal Plain.

Culex species mosquito biting a human hand.

Blackside dace are a type of minnow with a red underbelly and a black stripe down their sides. They are found only in parts of Tennessee, Kentucky, and western Virginia. The image shows a school of Blackside dace.

IGBST researchers begin gathering biological data from the bear.  The kerchief over the bear's eyes protects it from dust and debris and reduces visual stimulation. The small tubing in its nose, known as a nasal cannula, delivers oxygen to the animal while it is tranquilized.

An adult female polar bear and her two cubs travel across the sea ice of the Arctic Ocean north of the Alaska coast.

These live Asian swamp eels were imported from southeast Asia and sold in an urban food market in the U.S. Raw or undercooked Asian swamp eels could transmit a parasitic infection called gnathostomiasis to consumers, and wild eels could become widespread in some U.S. waters.

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. The image has been inverted to bring out details. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

A photomicrograph depicting the siliceous tests of ten species of marine radiolarians. This image has been inverted to bring out details. Upon death, their tests can form siliceous marine sediments known as radiolarian ooze.

Back-lit photographs of wings of White-nose Syndrome (WNS)-positive little brown bats, one with subtle circular and irregular pale areas (arrows) indicating areas of fungal infection (A) and another bat (B) with areas of relatively normal tone and elasticity (black arrow), compared to a WNS affected area that looks like crumpled tissue paper with loss of elasticity,

Hibernating little brown bat with white muzzle typical of White-nose syndrome.

Suzanne Nicholson, USGS, collecting soil at one of the sites in New Jersey, on the coast of the Atlantic Ocean just south of Atlantic City.

The ice froze around the fence post, the stage in the river went up, then the river froze again, creating a large gage height correction - Heart River near Richardton, North Dakota.

Team of scientists working together to insert a tracking device in a 14 foot Burmese python.

Herring larvae 15 days post-hatch. Food in the gut appears orange.

Currently four age classes (0, 1, 2, and 4 year olds) of SPF herring are maintained at the Marrowstone Marine Field Station.

Researchers with IGBST measure the bear's girth as part of body fitness data collection.

Once a bear is radio collared, researchers can track its movements with telemetry.

When looking for a place to set up a trapping location, scientists look for existing bear sign such as scratches on trees and bear scat. Sometimes traps are set in areas that have no obvious bear sign to determine if indeed bears are present.