Pacific Southwest Research Station

Selected Publications

Welsh, H. H., Jr., and G. R. Hodgson. In prep (2009). The influence of fluvial and geomorphic processes on community structuring of the riparian and aquatic herperofauna in a Northwest California watershed. Journal of Herpetology.

Welsh, H. H., Jr., and Garth R. Hodgson. In press (2009). Stream Amphibians as metrics of critical biological thresholds in the Pacific Northwest, U.S.A: a response to Kroll et al. Journal of Freshwater Biology.

McCarthy, S.G., J.J. Duda, J.M. Emlen, G.R. Hodgson, and D.A. Beauchamp. 2009. Linking habitat quality with trophic performance of steelhead (Oncorhynchus mykiss) along forest gradients in the South Fork Trinity River watershed, California. Transactions of the American Fisheries Society 138:506-521.

Welsh, H. H., Jr., and G. R. Hodgson. 2008. Amphibians as metrics of critical biological thresholds in forested headwater streams of the Pacific Northwest, USA. Journal of Freshwater Biology, 53: 1470-1488.

Karraker N. E., D. S. Pilliod, M. J. Adams, E. L. Bull, P. S. Corn, L. V. Diller, L. A. Dupus, M. P. Hayes, B. R. Hossack, G. R. Hodgson, E. J. Hyde, K. Lohman, B. R. Norman, L. M. Ollivier, C. A. Pearl, and C. R. Peterson. 2006. Taxonomic and geographic variation in the oviposition of tailed frogs ( Ascaphus spp.). Northwest Naturalist. 87:87-97

Karraker N. E., L. M. Ollivier, and G. R. Hodgson. 2005. Oviposition site of the southern torrent salamander ( Rhyacotriton variegatus ) in northwestern California. Northwestern Naturalist. 86:34-36

Welsh, H. H., Jr., G. R. Hodgson, and N. E. Karraker. 2005b. Influences of the vegetation mosaic on riparian and stream microclimates in a mixed forest-grassland landscape in "Mediterranean" northwestern California. Ecography 28: 537-551.

Welsh, H. H., Jr., G. R. Hodgson, and A. J. Lind. 2005a. Ecogeography of the herpetofauna of a northern California watershed: linking species patterns to landscape processes. Ecography 28: 521-536.

Welsh, H. H., Jr., G. R. Hodgson, M. Roche, and B. Harvey. 2001. Distribution of juvenile coho salmon ( Oncorhynchus kisutch ) in relation to water temperatures in tributaries of a northern California watershed: determining management thresholds for an impaired cold-water adapted fauna. North American Journal of Fisheries Management 21(3): 464-470.

Welsh, H. H., Jr., and G. R. Hodgson. 1997. A hierarchical strategy for sampling herpetofaunal assemblages along small streams in the western U.S., with an example from northern California. Tran. West. Sect. Wildl. Society 33:56-66.

Selected Reports

Hodgson, G. R., and H. H. Welsh, Jr. 2007. The distribution of amphibian assemblages of zero-order (headwater) catchments and their relationships to the landscape mosaic in the Mill Creek Watershed and adjacent parklands in Del Norte County, California.

Hodgson, G. R., L. M. Ollivier, and H. H. Welsh, Jr. 2005. Effects of Port Orford cedar tree removal on vegetation composition and structure, and amphibian habitat in streams in the Smith River National Recreation Area, Del Norte County, California.

Welsh, H. H., Jr., A. J. Lind, L. M. Ollivier, G. R. Hodgson, N. E. Karraker. 1998. Comments on the PALCO HCP/SYP and EIS/EIR with regard to the maintenance of riparian, aquatic, and late seral ecosystems and their associated amphibian and reptile species.