Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 43327
The Florida manatee (Trichechus manatus latirostris) immunoglobulin heavy chain suggests the importance of clan III variable segments in repertoire diversity The Florida manatee (Trichechus manatus latirostris) immunoglobulin heavy chain suggests the importance of clan III variable segments in repertoire diversity
Manatees are a vulnerable, charismatic sentinel species from the evolutionarily divergent Afrotheria. Manatee health and resistance to infectious disease is of great concern to conservation groups, but little is known about their immune system. To develop manatee-specific tools for monitoring health, we first must have a general knowledge of how the immunoglobulin heavy (IgH) chain locus...
Authors
Breanna Breaux, Thaddeus C. Deiss, Patricia L. Chen, Maria Paula Cruz-Schneider, Leonardo Sena, Margaret E. Hunter, Robert K. Bonde, Michael F. Criscitiello
Use of navigation channels by Lake Sturgeon: Does channelization increase vulnerability of fish to ship strikes? Use of navigation channels by Lake Sturgeon: Does channelization increase vulnerability of fish to ship strikes?
Channelization for navigation and flood control has altered the hydrology and bathymetry of many large rivers with unknown consequences for fish species that undergo riverine migrations. In this study, we investigated whether altered flow distributions and bathymetry associated with channelization attracted migrating Lake Sturgeon (Acipenser fulvescens) into commercial navigation...
Authors
Darryl W. Hondorp, David H. Bennion, Edward F. Roseman, Christopher M. Holbrook, James C. Boase, Justin A. Chiotti, Michael V. Thomas, Todd C. Wills, Richard Drouin, Steven T. Kessel, Charles C. Krueger
Incorporating Allee effects into the potential biological removal level Incorporating Allee effects into the potential biological removal level
Potential biological removal (PBR) is an approach used to calculate sustainable harvest and “take” limits for populations. PBR was originally derived assuming logistic growth while ignoring the effects of small population size (i.e., an Allee effect). We derived a version of PBR that includes an Allee effect (i.e., small population size or densities limiting population growth rates). We...
Authors
Humza Hadier, Sarah Oldfield, Tiffany Tu, Rosa Moreno, Jay E. Diffendorfer, Eric A. Eager, Richard A. Erickson
Lichens and microfungi in biocrusts: Structure and function now and in the future Lichens and microfungi in biocrusts: Structure and function now and in the future
Biological soil crusts (biocrusts) are formed by soil-surface communities of biota that live within, or immediately on top of, the uppermost millimeters of soil. They consist of cyanobacteria, algae, mosses, microfungi, and lichenized fungi (hereafter, lichens). Cyanobacterial and microfungal filaments, rhizinae and rhizomorphs of lichens, and rhizinae and protonemata of bryophytes weave
Authors
Jayne Belnap, Otto L. Lange
Climate change and tree-line ecosystems in the Sierra Nevada: Habitat suitability modelling to inform high-elevation forest dynamics monitoring Climate change and tree-line ecosystems in the Sierra Nevada: Habitat suitability modelling to inform high-elevation forest dynamics monitoring
Whitebark pine and foxtail pine serve foundational roles in the subalpine zone of the Sierra Nevada. They provide the dominant structure in tree-line forests and regulate key ecosystem processes and community dynamics. Climate change models suggest that there will be changes in temperature regimes and in the timing and magnitude of precipitation within the current distribution of these...
Authors
Peggy E. Moore, Otto Alvarez, Shawn T. McKinney, Wenkai Li, Matthew L. Brooks, Qinghua Guo
Climate-induced trends in predator–prey synchrony differ across life-history stages of an anadromous salmonid Climate-induced trends in predator–prey synchrony differ across life-history stages of an anadromous salmonid
Differential climate-induced shifts in phenology can create mismatches between predators and prey, but few studies have examined predator–prey mismatch across multiple life-history stages. We used long-term data from a warming stream with shifting salmonid migration timings to quantify intra-annual migration synchrony between predatory Dolly Varden (Salvelinus malma) and Pacific salmon...
Authors
Donovan A. Bell, Ryan Kovach, Scott C. Vulstek, John E. Joyce, David A. Tallmon
Vegetation history since the last glacial maximum in the Ozark highlands (USA): A new record from Cupola Pond, Missouri Vegetation history since the last glacial maximum in the Ozark highlands (USA): A new record from Cupola Pond, Missouri
The timing and drivers of vegetation dynamics and formation of no-analog plant communities during the last deglaciation in the unglaciated southeastern US are poorly understood. We present a multi-proxy record spanning the past 19,800 years from Cupola Pond in the Ozarks Mountains, consisting of replicate high-resolution pollen records, 25 AMS radiocarbon dates, and macrofossil, charcoal...
Authors
Rachel A. Jones, John W. Williams, Stephen T. Jackson
An assessment of food habits, prey availability, and nesting success of golden eagles within the Desert Renewable Energy Conservation Plan Area An assessment of food habits, prey availability, and nesting success of golden eagles within the Desert Renewable Energy Conservation Plan Area
Within the Desert Renewable Energy Conservation Plan area, which encompasses California’s Mojave Desert, development and operation of renewable energy facilities has the potential to impact golden eagle (Aquila chrysaetos) populations through loss of habitat and prey base. Developing an effective conservation strategy that aims to mitigate for such operations is necessary to lessen these...
Authors
Kathleen M. Longshore, Todd Esque, Kenneth Nussear, Diego R. Johnson, Matthew Simes, Richard D. Inman
A validation of 11 body-condition indices in a giant snake species that exhibits positive allometry A validation of 11 body-condition indices in a giant snake species that exhibits positive allometry
Body condition is a gauge of the energy stores of an animal, and though it has important implications for fitness, survival, competition, and disease, it is difficult to measure directly. Instead, body condition is frequently estimated as a body condition index (BCI) using length and mass measurements. A desirable BCI should accurately reflect true body condition and be unbiased with...
Authors
Bryan Falk, Ray W. Snow, Robert N. Reed
Potential impacts of sea level rise on native plant communities and associated cultural sites in coastal areas of the main Hawaiian Islands Potential impacts of sea level rise on native plant communities and associated cultural sites in coastal areas of the main Hawaiian Islands
Hawaiian coastal vegetation is comprised of plant species that are adapted to growing in extremely harsh conditions (salt spray, wave wash, wind, and substrates with limited nutrients) found in this habitat zone. Prior to human colonization of Hawai‘i coastal vegetation extended as a continuous ring around each of the islands, broken only by stretches of recent lava flows or unstable...
Authors
James D. Jacobi, Frederick R. Warshauer
Rapid prototyping for decision structuring: An efficient approach to conservation decision analysis Rapid prototyping for decision structuring: An efficient approach to conservation decision analysis
No abstract available.
Authors
Georgia E. Garrard, Libby Rumpff, Michael C. Runge, Sarah J. Converse
A multi-species synthesis of physiological mechanisms in drought-induced tree mortality A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
Widespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere–atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality...
Authors
Henry D. Adams, Melanie Zeppel, William R.L. Anderegg, Henrik Hartmann, Simon M. Landhausser, David T. Tissue, Travis E. Huxman, Patrick J. Hudson, Trenton E. Franz, Craig D. Allen, Leander D. L. Anderegg, Greg A. Barron-Gafford, David Beerling, David D. Breshears, Timothy J. Brodribb, Harald Bugmann, Richard C. Cobb, Adam D. Collins, L. Turin Dickman, Honglang Duan, Brent E. Ewers, Lucia Galiano, David A. Galvez, Nuria Garcia-Forner, Monica L. Gaylord, Matthew J. Germino, Arthur Gessler, Uwe G. Hacke, Rodrigo Hakamada, Andy Hector, Michael W. Jenkins, Jeffrey M. Kane, Thomas E. Kolb, Darin J. Law, James D. Lewis, Jean-Marc Limousin, David Love, Alison K. Macalady, Jordi Martínez-Vilalta, Maurizio Mencuccini, Patrick J. Mitchell, Jordan D. Muss, Michael J. O’Brien, Anthony P. O’Grady, Robert E. Pangle, Elizabeth A. Pinkard, Frida I. Piper, Jennifer Plaut, William T. Pockman, Joe Quirk, Keith Reinhardt, Francesco Ripullone, Michael G. Ryan, Anna Sala, Sanna Sevanto, John S. Sperry, Rodrigo Vargas, Michel Vennetier, Danielle A. Way, Chonggang Wu, Enrico A. Yepez, Nate G. McDowell