Images

Ayla Skorupa, a graduate student at the University of Massachusetts, reviews field notes on native mussels with Unit Leader, Allison Roy (Massachusetts CRU). Photograph by Naila Moreira.

Arctic lakes support trophic interactions, biological processes, and critical habitat at all trophic levels; however, climatic warming threatens to alter the structure and function of aquatic communities and overall system production.

Bison on Antelope Island, Utah. Utah Division of State Parks manages approximately 500-700 bison. Source:  Utah Division of State Parks. 

Pyramid Lake, Nevada, is one of the last remaining strongholds for lacustrine Lahontan cutthroat trout; almost all other large lake populations have undergone population declines or extirpation as a result of habitat degradation, overharvest, and water diversions, all compounded by the stocking of nonnative species.

Chronic wasting disease (CWD) is an emerging infectious disease that is fatal to free-ranging and captive animals in Cervidae (the deer family; referred to as “cervids”). Affected animals include deer, elk, moose, and reindeer.

Chronic wasting disease (CWD) is an emerging infectious disease that is fatal to free-ranging and captive animals in Cervidae (the deer family; referred to as “cervids”). Affected animals include deer, elk, moose, and reindeer.

Chronic wasting disease (CWD) is an emerging infectious disease that is fatal to free-ranging and captive animals in Cervidae (the deer family; referred to as “cervids”). Affected animals include deer, elk, moose, and reindeer.

Chronic wasting disease (CWD) is an emerging infectious disease that is fatal to free-ranging and captive animals in Cervidae (the deer family; referred to as “cervids”). Affected animals include deer, elk, moose, and reindeer.

Chronic wasting disease (CWD) is an emerging infectious disease that is fatal to free-ranging and captive animals in Cervidae (the deer family; referred to as “cervids”). Affected animals include deer, elk, moose, and reindeer.

Distribution map: distribution of chronic wasting disease in North America

Rivers in the western U.S. rivers are experiencing changes in nutrient loading because of rapid urban development, but the effects of changing nutrient loading on the structure and function of stream ecosystems, especially fish habitat, are not fully understood.

A brook floater filter feeding as it is anchored into the sediment of a stream bottom. Habitat loss is a long-recognized problem for many endangered species, and the brook floater is no exception. In-stream alterations that change flow and alter sediment loads can affect downstream locations where freshwater mussels live.

Matt Kauffman, Unit Leader, USGS Wyoming Cooperative Fish and Wildlife Research Unit, second from left, works with Wyoming Game and Fish Department and University of Wyoming collaborators to release an elk fitted with a global positioning system (GPS) tracking collar.

Shovelnose sturegon.

Fruits of Her Labor: the flower on the left has been pollinated and the fruit is developing, but the flower on the right is still being pollinated, highlighting the importance of bees to humanity's food resources. 

Andrena spp. seemingly getting a piggyback ride from a bumblebee (Bombus spp.). Researcher was holding the flower on private land in Macon County.

The center of the composite flower looks like a "landing zone" and has evolved to guide pollinators to its nectar/pollen.

Ongoing camera monitoring efforts in Southern Arizona to monitor wildlife for the goal of detecting endangered jaguars and ocelots have covered 20 mountain ranges, off and on, from 2012 to 2019.

Ongoing camera monitoring efforts in Southern Arizona to monitor wildlife for the goal of detecting endangered jaguars and ocelots have covered 20 mountain ranges, off and on, from 2012 to 2019.

Ongoing camera monitoring efforts in Southern Arizona to monitor wildlife for the goal of detecting endangered jaguars and ocelots have covered 20 mountain ranges, off and on, from 2012 to 2019.

Throughout Hawaii, fishponds are considered by their local communities as important cultural touchstones, a source of local, sustainably produced food, and an important component to the development of community-based management for nearshore fisheries.