Publications
Below is a list of WERC's peer-reviewed publications. If you are searching for a specific publication and cannot find it in this list, please contact werc_web@usgs.gov
Filter Total Items: 3784
Postflood persistence and recolonization of endangered tidewater goby populations Postflood persistence and recolonization of endangered tidewater goby populations
Before-and-after surveys at several southern California sites indicated that populations of endangered tidewater goby Eucyclogobius newberryi persisted through heavy flooding in 1995. This was contrary to our expectations that flooding might have led to extirpation in some smaller wetlands. There was also no significant change in tidewater goby density before and after the flooding...
Authors
Kevin Lafferty, Camm C. Swift, Richard F. Ambrose
Interactions between northern elephant seals and vehicles near Point Piedras Blancas, California Interactions between northern elephant seals and vehicles near Point Piedras Blancas, California
Northern elephant seals, Mirounga angustirostris, were nearly extirpated in the late 19th and early 20th centuries. However, they have recovered to the point where they are now locally abundant (Stewart e t al. 1994). Stimulated by the report of human/northern elephant seal interactions in Baja California Sur (Webster and Baird 1998), we report here on an unusual terrestrial example of...
Authors
Brian B. Hatfield, Galen B. Rathbun
Results of the 1999 survey of the reintroduced sea otter population in Washington state Results of the 1999 survey of the reintroduced sea otter population in Washington state
Fifty-nine sea otters were released off the west coast of the Olympic Peninsula of Washington State during the summers of 1969 and 1970; all had been translocated from Amchitka Island, Alaska. In 1970, 30 otters were released. Surveys to assess the results of this translocation began in 1977. Up to 1989, the population has grown at near the maximum rate of increase (rmax) for sea otter...
Authors
Ronald J. Jameson, Steven J. Jeffries
GIS database development to analyze fire history in southern Arizona and beyond: an example from Saguaro National Park GIS database development to analyze fire history in southern Arizona and beyond: an example from Saguaro National Park
No abstract available at this time
Authors
P.J. Swantek, W. L. Halvorson, C.R. Schwalbe
Inventory and Assessment of Avifauna and a Monitoring Proposal for Tonto National Monument, Arizona Inventory and Assessment of Avifauna and a Monitoring Proposal for Tonto National Monument, Arizona
No abstract available at this time
Authors
K.L. Hiett, W. L. Halvorson
Rana luteiventris (Columbia Spotted Frog) Rana luteiventris (Columbia Spotted Frog)
No abstract available.
Authors
Patrick M. Kleeman
What Can Thalweg Profiles Tell Us? A Case Study from Redwood Creek, California What Can Thalweg Profiles Tell Us? A Case Study from Redwood Creek, California
No abstract available at this time
Authors
Mary Ann Madej
Bullfrogs-dinner guests we're sorry we invited. Arizona-Sonora Desert Museum, Tucson Bullfrogs-dinner guests we're sorry we invited. Arizona-Sonora Desert Museum, Tucson
No abstract available at this time
Authors
C. Schwalbe, P. Rosen
Extirpation and recolonization in a metapopulation of an endangered fish, the tidewater goby Extirpation and recolonization in a metapopulation of an endangered fish, the tidewater goby
The tidewater goby ( Eucyclogobius newberryi ), an endangered species in the United States, occurs in a series of isolated coastal wetlands in California. Using historical presence-absence data and our own surveys, we estimated annual rates of extirpation and recolonization for several populations of the goby in southern California. As predicted, large wetlands had lower rates of...
Authors
K. D. Lafferty, C. C. Swift, R.F. Ambrose
Subcutaneous anchor attachment increases retention of radio transmitters on Xantus' and marbled murrelets Subcutaneous anchor attachment increases retention of radio transmitters on Xantus' and marbled murrelets
We modified a subcutaneous anchor attachment and achieved transmitter reten- tion times that exceeded those reported previously for other attachments used on alcids. Traditional suture and epoxy attachment methods were used on Xantus' Murrelets in 1995 and 1996, while the modified attachment was used for Xantus' Murrelets in 1996 and 1997 and Marbled Murrelets in 1997. Modifications...
Authors
Scott H. Newman, John Y. Takekawa, Darrell L. Whitworth, Esther E. Burkett