Images

Open weir at Apple Creek near Menoken, North Dakota. Flow is 36.7 cubic feet per second.

Blood samples from pallid sturgeon are taken to assess hormone levels and reproductive condition. 

Increase flow in the Des Lacs River and warmer temperatures probably
caused instability in the area of the ice spikes causing them to disappear.

An American alligator and a Burmese python locked in a struggle to prevail in Everglades National Park. This python appears to be losing, but snakes in similar situations have apparently escaped unharmed, and in other situations pythons have eaten alligators.

Demonstration wetland at Henderson, Nevada, where vegetated hummocks were built into the wastewater treatment wetland to improve its effectiveness and sustainability, as well as provide quality wildlife habitat.

Launching a cabin boat outfitted with telemetry tracking equipment during high water on the Missouri River from the Hartsburg, Missouri, boat ramp. 

Acoustic receivers detect and process the acoustic signal from the telemetry tags telling the tracking crew which direction to go to find the fish, and even which fish it is.

A gator relaxes in the shade underneath our station’s dock.

An excessive amount of weeds flows down North New River.

Scientists close off a center bag seine prior to pursing net to recover fish sample.

Employee holds a sheepshead, a juvenile fish of recreational importance captured in a mangrove-lined tidal creek.

Scientist measures the profile of a tidal creek at low tide.  Note mudflat in background.

Conducting a reconnaissance of a salt marsh-lined tidal creek.

Mara Tongue download data from phenocam located in Idaho. The phenocam takes a picture daily and that data is used to help track phenological changes (the timing and vigor of seasonal biological events). The data from the phenocam is used (with other data) to gain a better understanding of vegetation changes over the entire ecoregion.

Alicia Torregrosa download data from a phenocam located in Idaho. The phenocam takes a picture daily and that data is used to help track phenological changes (the timing and vigor of seasonal biological events). The data from the phenocam is used (with other data) to gain a better understanding of vegetation changes over the entire ecoregion.

Standing on the Earth and Dam at Cougar as the fog rolled in and over the tailrace. (South Fork of the McKenzie River)

Sea level rise and increased turbidity are causing corals world-wide to die, littering beaches with their remains.

After the unexpected 2010-2011 winter frost, attributed to climate change, much of south Florida’s coastal vegetation was lost.

Small Peekhole.

Water Lily.

Just moments after the last photograph, the collapse produced a thick brown plume, but did not appear to trigger an explosive event in this case.