Ecosystems

Filter Total Items: 522
Date published: April 13, 2018
Status: Active

Coastal Habitats

USGS scientists quantify and describe functional relationships among aquatic species in coastal habitats to characterize aquatic community structure, function, adaptation, and sustainability.

Date published: April 13, 2018
Status: Active

Wetlands and Ponds

USGS research to assess wetland habitats and ecological functions are critical for restoration activities.

Date published: April 13, 2018
Status: Active

Deepwater Habitats

Deepwater habitats, such as the Great Lakes, are a key strategic resource and driver of economic vitality that are threatened by multiple stressors, including overfishing, invasions of exotic species, habitat degradation, pollution, climate change, and harmful algal blooms. Under the 1954 Convention on Great Lakes Fisheries, the Department of Interior is responsible for conducting a...

Date published: April 13, 2018
Status: Active

Streams and Rivers

USGS studies the ecology and biodiversity of streams, rivers, and aquatic ecosystems to understand impacts of changing land and water use on fish and other aquatic communities. We research their habitats and develop techniques to understand, conserve, and restore fish communities.

Date published: April 5, 2018
Status: Active

Sylvatic Plague

Sylvatic plague is a flea-borne bacterial disease of wild rodents. Humans, pets, and wildlife can be afflicted with this disease.  Prairie dogs are highly susceptible to plague and are the primary food source of the highly endangered black-footed ferret, which is also susceptible to the disease. Sylvatic plague can decimate prairie dog colonies (90% or greater mortality rates), resulting in...

Date published: April 3, 2018
Status: Active

Effect of Chronic Neonicotinoid Insecticide Exposure upon Monarch Development

The long-term viability of monarch (Danaus plexippus) butterfly populations in North America is in doubt.

Date published: April 3, 2018
Status: Active

Coral Diseases

Coral disease is now one of the major causes of reef degradation and coral mortality. First reported on reefs in the Florida Keys and Caribbean in the 1970s, black band disease was first recorded in Hawaii in 1994.

Date published: April 3, 2018
Status: Active

Sea Star Wasting Disease

Sea stars are dying off at dramatic rates across the West Coast from Baja California in Mexico to Alaska. The wasting disease that is affecting sea stars also is not specific to one species: more than 20 sea star species have been affected so far.

Date published: March 27, 2018
Status: Active

Multi-century perspectives on current and future streamflow in the Missouri River Basin

The Missouri River system is the life-blood of the American Midwest providing water resources that drive agriculture, industry, hydroelectric power generation, and ecosystems. However, the Missouri River Basin (MRB) (Figure 1) is the only major river in the western U.S. for which hydrologic reconstructions from tree rings have not been generated in any systematic way. This knowledge gap is...

Contacts: Greg Pederson
Date published: March 26, 2018
Status: Active

Structured Decision Making

USGS Patuxent is a recognized world-leader in the application of structured decision making to problems in natural resource management. Scientists at Patuxent are adept at a number of the key skills required in SDM, including objectives elicitation, model development, decision analysis, optimization, monitoring design, and facilitation. In addition, Patuxent scientists train other Federal,...

Date published: March 21, 2018
Status: Active

Effects of Aquatic Vegetation on Water Quality and Residence Time in the Bay-Delta

The spread of invasive aquatic vegetation in the Sacramento-San Joaquin Delta is having a profound impact on the Delta’s natural habitat. The presence of these “aquatic weeds” has been shown to alter water velocity and increase water clarity, posing threats to native fish species, specifically the threatened Delta Smelt. These aquatic plants can also affect the foodweb by altering nutrient,...

Date published: March 16, 2018
Status: Active

Vector-borne Disease Research

The Challenge: Lyme disease, which is caused by a tick-transmitted spirochete, is the most common vector-borne disease in North America, with about 300,000 cases each year. Most cases occur in the northeastern and north central U.S., with relatively few in the south, even though the vector tick is present in all of these regions. The purpose of this research is to elucidate the ecological...