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Human impacts
The effects, intentional or unintentional, beneficial or harmful, direct or indirect, which human activities have upon the environment and living things.
Subtopics:
Abandoned mines and quarries (5 items)
Dredging (1 items)
Ecosystem services (1 items)
Land use change (21 items)
Mining hazards (10 items)
Overfishing (3 items)
Overgrazing (1 items)
Waste treatment and disposal (23 items)
Related topics:


Results 91 - 100 of 107 listed alphabetically [list by similarity]
The Baltimore-Washington Regional Collaboratory Land-Use History Research Program [More info]
A description of research activities of the Baltimore-Washington Regional Collaboratory urban growth in the Chesapeake region.
The U.S. Geological Survey and the Chesapeake Bay - the role of science in environmental restoration [More info]
Summary of a circular on USGS environmental research and Chesapeake Bay with links to full document. Includes discussion of the problems of the estuary, restoration efforts, water quality, and effects on ecosystem.
PDF The effects of Glen Canyon Dam operations on early life stages of rainbow trout in the Colorado River [More info]
Complex interactions among hydrologic events initiated by people and the behaviors and characteristics of animal species (both native and introduced) lead to important scientific and management problems.
The role of climate in estuarine variability [More info]
Article from American Scientist on study of the San Francisco Bay estuary as a component of the global climate system showing that natural fluctuations might be mistaken for anthropogenic trends affecting waterflow and salinity.
PDF Three Experimental High-Flow Releases from Glen Canyon Dam, Arizona-Effects on the Downstream Colorado River Ecosystem [More info]
Scientific issues we should consider when conduction high flow experiments to ameliorate the negative effects of dams on native river species and fluvial processes.
Topics in coastal and marine sciences: Coastal erosion [More info]
Topics in Coastal and Marine Sciences provides background science materials, definitions, and links to give a common context for users from a variety of backgrounds. Coastal erosion was chosen as the first topic.
PDF Toxicity and bioavailability of metals in the Missouri River adjacent to a lead refinery [More info]
Report (PDF format) on an evaluation of the potential environmental impacts of contaminated ground water from a metals refinery adjacent to the Missouri River in Omaha, Nebraska testing water and sediments for contaminants and toxicity.
Tree rings record of 100 years of hydrologic change within a wetland [More info]
Use of tree ring dating to study distinct episodes of hydrologic change in the Tully Valley wetland, New York recording history of solution-brine injection mining for salt.
USGS / Department of Energy cooperative studies in Nevada [More info]
Describes cooperation of the USGS office in Las Vegas, Nevada, with the Department of Energy to address environmental and scientific issues at the Nevada Test Site and vicinity with links to project information.
USGS Global Change Science [More info]
Broad overview of USGS research and monitoring designed to understand current changes in the context of prehistoric and recent earth processes, distinguishing between natural and human-influenced changes, and recognizing ecological and physical responses
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