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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: 3617

Threatened fishes of the world: Eucyclogobius newberryi Girard, 1857 (Gobiidae)

No abstract available.
Authors
Kevin D. Lafferty, R. O. Swenson, Camm C. Swift

Altered behavior of parasitized killifish increases susceptibility to predation by bird final hosts

Parasites that are transmitted from prey to predator are often associated with altered prey behavior. Although many concur that behavior modification is a parasite strategy that facilitates transmission by making parasitized prey easier for predators to capture, there is little evidence from field experiments. We observed that conspicuous behaviors exhibited by killfish (Fundulus parvipinnis) were
Authors
Kevin D. Lafferty, A. K. Morris

Reproduction in a Sonoran Desert population of the desert tortoise (Gopherus agassizii)

No abstract available.
Authors
R.C. Murray, C. R. Schwalbe, S.J. Bailey, S.P. Cuneo, S.D. Hart

Evaluation of a flipper-mounted transmitter on sea otters

No abstract available.
Authors
B.B. Hatfield, G. B. Rathbun

Channel response to sediment wave propagation and movement, Redwood Creek, California, USA

Redwood Creek, north coastal California, USA, has experienced dramatic changes in channel configuration since the 1950s. A series of large floods (in 1955, 1964, 1972 and 1975) combined with the advent of widespread commercial timber harvest and road building resulted in extensive erosion in the basin and contributed high sediment loads to Redwood Creek. Since 1975, no peak flows have exceeded a 5
Authors
Mary Ann Madej, Vicki Ozaki

Developing a criterion for delisting the southern sea otter under the U.S. Endangered Species Act

Recent surveys of recovery plans indicate that criteria, such as population sizes, for delisting species from the U.S. Endangered Species Act (ESA) are often unrealistically low by scientific standards. We describe the delisting criterion for the threatened southern sea otter (Enhydra lutris nereis) developed by the Southern Sea Otter Recovery Team. A major oil spill is the most serious threat to
Authors
K. Ralls, D. DeMaster, J. A. Estes

Mitochondrial-DNA variation among subspecies and populations of sea otters (Enhydra lutris)

We used restriction-enzyme analysis of polymerase-chain reaction-amplified, mitochondrial DNA (mtDNA) to assess genetic differentiation of subspecies and populations of sea otters, Enhydra lutris, throughout the range of the species. There were several haplotypes of mtDNA in each subspecies and geographically separate populations. MtDNA sequence divergence of haplotypes of sea otters was 0.0004–0.
Authors
Matthew A. Cronin, James L. Bodkin, Brenda E. Ballachey, James A. Estes, John C. Patton

Challenges in the quest for keystones

No abstract available.
Authors
M.E. Power, D. Tilman, J. A. Estes, B.A. Menge, W.J. Bond, L. S. Mills, G. Daily, J.C. Castilla, J. Lubchenco, R.T. Paine