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: 3618
The role of infectious disease in marine communities
Marine ecologists recognize that infectious diseases play and important role in ocean ecosystems. This role may have increased in some host taxa over time (Ward and Lafferty 2004). We begin this chapter by introducing infectious agents and their relationships with their hosts in marine systems. We then put infectious disease agents with their hosts in marine systems. We then put infectious disease
Authors
Kevin D. Lafferty, C. Drew Harvell
The role of defensible space for residential structure protection during wildfires
With the potential for worsening fire conditions, discussion is escalating over how to best reduce effects on urban communities. A widely supported strategy is the creation of defensible space immediately surrounding homes and other structures. Although state and local governments publish specific guidelines and requirements, there is little empirical evidence to suggest how much vegetation modifi
Authors
Alexandra D. Syphard, Teresa J. Brennan, Jon E. Keeley
A new species of Eimeria Schneider, 1875 (Apicomplexa: Eimeriidae) from the Solomon ground skink, Sphenomorphus solomonis (Boulenger) (Sauria: Scincidae) from Papua New Guinea
Between September 1990 and November 1991, 19 Sphenomorphus spp. skinks, including nine S. jobiense, three S. simus, and seven Solomon ground skinks, S. solomonis (Boulenger), were collected from Madang and Morobe Provinces, Papua New Guinea (PNG), and examined for coccidia. A single S. solomonis was found to be infected with a new species of Eimeria Schneider, 1875. Oöcysts of Eimeria perkinsae n.
Authors
Chris T. McAllister, Donald W. Duszynski, Robert N. Fisher, Christopher C. Austin
Space use of wintering waterbirds in India: Influence of trophic ecology on home-range size
Relationship between species' home range and their other biological traits remains poorly understood, especially in migratory birds due to the difficulty associated with tracking them. Advances in satellite telemetry and remote sensing techniques have proved instrumental in overcoming such challenges. We studied the space use of migratory ducks through satellite telemetry with an objective of unde
Authors
Tsewang Namgail, John Y. Takekawa, Sivananinthaperumal Balachandran, Ponnusamy Sathiyaselvam, Taej Mundkur, Scott H. Newman
Waterfowl ecology and management
No abstract available.
Authors
Joshua T. Ackerman, Mark P. Herzog, Gregory S. Yarris, Michael L. Casazza, E. Burns, John M. Eadie
Efficient 3D movement-based kernel density estimator and application to wildlife ecology
We describe an efficient implementation of a 3D movement-based kernel density estimator for determining animal space use from discrete GPS measurements. This new method provides more accurate results, particularly for species that make large excursions in the vertical dimension. The downside of this approach is that it is much more computationally expensive than simpler, lower-dimensional models.
Authors
Jeff Tracey-PR, James K. Sheppard, Glenn K. Lockwood, Amit Chourasia, Mahidhar Tatineni, Robert N. Fisher, Robert S. Sinkovits
Threats and conservation needs for North American tortoises
No abstract available
Authors
Kristin H. Berry, M.J. Aresco
Foraging and growth potential of juvenile Chinook Salmon after tidal restoration of a large river delta
We evaluated whether restoring tidal flow to previously diked estuarine wetlands also restores foraging and growth opportunities for juvenile Chinook Salmon Oncorhynchus tshawytscha. Several studies have assessed the value of restored tidal wetlands for juvenile Pacific salmon Oncorhynchus spp., but few have used integrative measures of salmon performance, such as habitat-specific growth potential
Authors
Aaron T. David, Christopher Ellings, Isa Woo, Charles A. Simenstad, John Y. Takekawa, Kelley L. Turner, Ashley L. Smith, Jean E. Takekawa
Effects of prescribed fire on Coluber constrictor Mormon in coastal San Mateo County, California
Although prescribed burns are used in many locations where reptiles are present, the effects of fire on reptiles
are poorly understood. our objective was to determine the effects of prescribed fire on the Western yellow-bellied racer,
Coluber constrictor mormon, at a study site in coastal san Mateo county, california. We sampled an unburned site and an
adjacent prescribed burn site two to five yea
Authors
Michelle E. Thompson, Brian J. Halstead, Glenn D. Wylie, Melissa Amarello, Jeffrey J. Smith, Michael L. Casazza, Eric J. Routman
Changes in types and area of postharvest flooded fields available to waterbirds in Tulare Basin, California
Conservation efforts to restore historic waterbird distribution and abundance in the Central Valley of California require information on current and historic areas of waterbird habitat. To provide this information, we mapped the area of agricultural fields in the vicinity of the historic Tulare Lake Bed in the Tulare Basin, California, that were treated postharvest with two different flooding regi
Authors
Joseph P. Fleskes, Daniel A. Skalos, Melissa A. Farinha
Correction of locality records for the endangered arroyo toad (Anaxyrus californicus) from the desert region of southern California
The recovery strategy for an endangered species requires accurate knowledge of its distribution and geographic range. Although the best available information is used when developing a recovery plan, uncertainty often remains in regard to a species actual geographic extent. The arroyo toad (Anaxyrus californicus) occurs almost exclusively in coastal drainages, from Monterey County, California, sout
Authors
Edward L. Ervin, Kent R. Beaman, Robert N. Fisher
Comparative microhabitat characteristics at oviposition sites of the California red-legged frog (Rana draytonii)
We studied the microhabitat characteristics of 747 egg masses of the federally-threatened Rana draytonii (California red-legged frog) at eight sites in California. our study showed that a broad range of aquatic habitats are utilized by ovipositing R. draytonii, including sites with perennial and ephemeral water sources, natural and constructed wetlands, lentic and lotic hydrology, and sites surrou
Authors
Jeff A. Alvarez, David G. Cook, Julie L. Yee, Michael G. van Hattem, Darren R. Fong, Robert N. Fisher