Websites
Search your topic on the Internet, but remember that you will need to carefully evaluate the sites and information on those sites for appropriateness. Government agencies are good sources of data and reports, found on the Internet, that can be incorporated into your research project; remember, they are not peer-reviewed sources though.
Limit your search of the Internet using the Google search engine to a specific domain such as .gov or .edu. Here are some examples showing you how to do this:
trees AND california AND site:gov
trees AND california AND site:edu
birds AND california AND site:gov
birds AND california AND site:edu
Here are a few examples of websites that might provide information appropriate for your research:
The Forest Inventory and Analysis (FIA) Program of the U.S. Forest Service provides the information needed to assess America's forests.
The long history of scientifically credible FIA data provides critical status and trend information to resource managers, policy makers, investors, and the public through a system of annual resource inventory that covers both public and private forest lands across the United States.
FIA reports on status and trends in forest area and location; in the species, size, and health of trees; in total tree growth, mortality, and removals by harvest; in wood production and utilization rates by various products; and in forest land ownership.
Research database for Environmental Studies.
Covers all aspects of human impact to the environment. Subjects included are global warming, green building, pollution, sustainable agriculture, renewable energy, recycling, and more. The database provides indexing and abstracts for more than 384,000 records. This comprehensive resource draws on the connections between the environment and a variety of disciplines such as agriculture, education, law, health and technology. Topics covered include global climate change, green building, pollution, sustainable agriculture, renewable energy, recycling and more.