Mark A Ricca
I have spent my USGS career focused on addressing science needs of resource managers and agencies across a wide range of ecosystems by integrating concepts from population, community, and ecosystem ecology.
My experience spans ecological systems ranging from desert wetlands in California to sub-arctic islands in Alaska to rangelands of the American West. I now help facilitate science production for principal investigators at FRESC.
Professional Experience
2019-present: Supervisory Biologist-Research Manager, USGS Forest and Rangeland Ecosystem Science Center, Corvallis, OR
2002-2020: Wildlife Biologist, USGS Western Ecological Research Center, Dixon, CA
2000-2002: Biological Science Technician, USGS Western Ecological Research Center, Dixon, CA
1999: Faculty Research Assistant, Oregon State University, Corvallis, OR
1996-1999: Graduate Research Assistant, Oregon State University, Corvallis, OR
1994-1996: Field Biologist, California Department of Fish and Game, Sacramento, CA
Education and Certifications
Ph.D., Ecology, University of California, Davis, CA (2013)
M.S., Wildlife Science, Oregon State University, Corvallis OR (2000)
B.S. Wildlife, Humboldt State University, Arcata, CA (1995)
Science and Products
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Spatially explicit models of seasonal habitat for greater sage‐grouse at broad spatial scales: Informing areas for management in Nevada and northeastern California
Population ecology of Roosevelt elk: Conservation and management in Redwood National and State Parks. Butch Weckerly. 2017. University of Nevada Press, Reno, Nevada, USA. 224 pp. $54.95 hardback. ISBN 978- 1943859504.
Estimating sightability of greater sage-grouse at leks using an aerial infrared system and N-mixture models
Global positioning system tracking devices can decrease Greater Sage-Grouse survival
Population and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update
An integrated population model for greater Sage-Grouse (Centrocercus urophasianus) in the bi-state distinct population segment, California and Nevada, 2003–17
Greater sage-grouse science (2015–17)—Synthesis and potential management implications
The relative importance of intrinsic and extrinsic drivers to population growth vary among local populations of Greater Sage-Grouse: An integrated population modeling approach
Hierarchical population monitoring of greater sage-grouse (Centrocercus urophasianus) in Nevada and California—Identifying populations for management at the appropriate spatial scale
Greater sage-grouse (Centrocercus urophasianus) nesting and brood-rearing microhabitat in Nevada and California—Spatial variation in selection and survival patterns
Using object-based image analysis to conduct high-resolution conifer extraction at regional spatial scales
Pinyon and juniper encroachment into sagebrush ecosystems impacts distribution and survival of greater sage-grouse
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.
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If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 17No Result Found - Publications
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 68Spatially explicit models of seasonal habitat for greater sage‐grouse at broad spatial scales: Informing areas for management in Nevada and northeastern California
Defining boundaries of species' habitat across broad spatial scales is often necessary for management decisions, and yet challenging for species that demonstrate differential variation in seasonal habitat use. Spatially explicit indices that incorporate temporal shifts in selection can help overcome such challenges, especially for species of high conservation concern. Greater sage‐grouse CentrocerAuthorsPeter S. Coates, Brianne E. Brussee, Mark A. Ricca, John Severson, Michael L. Casazza, K. Benjamin Gustafson, Shawn P. Espinosa, Scott C. Gardner, David J DelahuntyPopulation ecology of Roosevelt elk: Conservation and management in Redwood National and State Parks. Butch Weckerly. 2017. University of Nevada Press, Reno, Nevada, USA. 224 pp. $54.95 hardback. ISBN 978- 1943859504.
Long-term research on large ungulate populations typically conjures perceptions of extensive (and expensive) animal capture and telemetry work, and subsequent advanced modeling of resource selection and population dynamics that inform management decisions. In contrast, studies lacking a telemetry component are often limited to animal behavior or natural history. Although compelling from a standpoiAuthorsMark A. RiccaEstimating sightability of greater sage-grouse at leks using an aerial infrared system and N-mixture models
Counts of grouse present at leks (breeding grounds) during spring are widely used to monitor population numbers and assess trends. However, only a proportion of birds available to count are detected resulting in a biased population index. We designed a study using an aerial integrated infrared imaging system (AIRIS) and experimental pseudo-leks to quantify sightability (proportion of birds detecteAuthorsPeter S. Coates, Gregory T. Wann, Gifford L. Gillette, Mark A. Ricca, Brian G. Prochazka, John P. Severson, Katie M. Andrle, Shawn P. Espinosa, Michael L. Casazza, David J. DelehantyGlobal positioning system tracking devices can decrease Greater Sage-Grouse survival
Reliable demographic estimates hinge on the assumption that marking animals does not alter their behavior, reproduction, or survival. Violations can bias inference and are especially egregious for species of high conservation concern. Global positioning system (GPS) devices represent a recent technological advancement that has contributed greatly to avian ecological studies compared with traditionAuthorsJohn P. Severson, Peter S. Coates, Brian G. Prochazka, Mark A. Ricca, Michael L. Casazza, David J DelahuntyPopulation and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update
Executive SummaryThe Bi-State Distinct Population Segment (Bi-State DPS) of greater sage-grouse (Centrocercus urophasianus, hereinafter “sage-grouse”) represents a genetically distinct and geographically isolated population that straddles the border between Nevada and California. The primary threat to these sage-grouse populations is the expansion of single-leaf pinyon (Pinus monophylla) and UtahAuthorsPeter S. Coates, Mark A. Ricca, Brian G. Prochazka, Shawn T. O'Neil, John P. Severson, Steven R. Mathews, Shawn Espinosa, Scott Gardner, Sherri Lisius, David J. DelehantyAn integrated population model for greater Sage-Grouse (Centrocercus urophasianus) in the bi-state distinct population segment, California and Nevada, 2003–17
The Bi-State Distinct Population Segment (DPS) of greater sage-grouse (Centrocercus urophasianus, hereinafter “sage-grouse”) occupies parts of Alpine, Mono, and Inyo Counties in California, and parts of Douglas, Esmeralda, Lyon, Carson City, and Mineral Counties in Nevada and was proposed for listing as threatened under the Endangered Species Act (ESA) by the U.S. Fish and Wildlife Service (USFWS)AuthorsSteven R. Mathews, Peter S. Coates, Brian G. Prochazka, Mark A. Ricca, Mary B. Meyerpeter, Shawn P. Espinosa, Sherri Lisius, Scott C. Gardner, David J. DelehantyGreater sage-grouse science (2015–17)—Synthesis and potential management implications
Executive SummaryThe greater sage-grouse (Centrocercus urophasianus; hereafter called “sage-grouse”), a species that requires sagebrush (Artemisia spp.), has experienced range-wide declines in its distribution and abundance. These declines have prompted substantial research and management investments to improve the understanding of sage-grouse and its habitats and reverse declines in distributionAuthorsSteven E. Hanser, Patricia A. Deibert, John C. Tull, Natasha B. Carr, Cameron L. Aldridge, Travis D. Bargsten, Thomas J. Christiansen, Peter S. Coates, Michele R. Crist, Kevin E. Doherty, Ethan A. Ellsworth, Lee J. Foster, Vicki A. Herren, Kevin H. Miller, Ann Moser, Robin M. Naeve, Karen L. Prentice, Thomas E. Remington, Mark A. Ricca, Douglas J. Shinneman, Richard L. Truex, Lief A. Wiechman, Dereck C. Wilson, Zachary H. BowenThe relative importance of intrinsic and extrinsic drivers to population growth vary among local populations of Greater Sage-Grouse: An integrated population modeling approach
Consideration of ecological scale is fundamental to understanding and managing avian population growth and decline. Empirically driven models for population dynamics and demographic processes across multiple spatial scales can be powerful tools to help guide conservation actions. Integrated population models (IPMs) provide a framework for better parameter estimation by unifying multiple sources ofAuthorsPeter S. Coates, Brian G. Prochazka, Mark A. Ricca, Brian J. Halstead, Michael L. Casazza, Erik J. Blomberg, Brianne E. Brussee, Lief Wiechman, Joel Tebbenkamp, Scott C. Gardner, Kerry P. ReeseHierarchical population monitoring of greater sage-grouse (Centrocercus urophasianus) in Nevada and California—Identifying populations for management at the appropriate spatial scale
Population ecologists have long recognized the importance of ecological scale in understanding processes that guide observed demographic patterns for wildlife species. However, directly incorporating spatial and temporal scale into monitoring strategies that detect whether trajectories are driven by local or regional factors is challenging and rarely implemented. Identifying the appropriate scaleAuthorsPeter S. Coates, Brian G. Prochazka, Mark A. Ricca, Gregory T. Wann, Cameron L. Aldridge, Steven E. Hanser, Kevin Doherty, Michael S. O'Donnell, David R. Edmunds, Shawn P. EspinosaGreater sage-grouse (Centrocercus urophasianus) nesting and brood-rearing microhabitat in Nevada and California—Spatial variation in selection and survival patterns
Greater sage-grouse (Centrocercus urophasianus; hereinafter, "sage-grouse") are highly dependent on sagebrush (Artemisia spp.) dominated vegetation communities for food and cover from predators. Although this species requires the presence of sagebrush shrubs in the overstory, it also inhabits a broad geographic distribution with significant gradients in precipitation and temperature that drive varAuthorsPeter S. Coates, Brianne E. Brussee, Mark A. Ricca, Jonathan E. Dudko, Brian G. Prochazka, Shawn P. Espinosa, Michael L. Casazza, David J. DelehantyUsing object-based image analysis to conduct high-resolution conifer extraction at regional spatial scales
The distribution and abundance of pinyon (Pinus monophylla) and juniper (Juniperus osteosperma, J. occidentalis) trees (hereinafter, "pinyon-juniper") in sagebrush (Artemisia spp.) ecosystems of the Great Basin in the Western United States has increased substantially since the late 1800s. Distributional expansion and infill of pinyon-juniper into sagebrush ecosystems threatens the ecological functAuthorsPeter S. Coates, K. Benjamin Gustafson, Cali L. Roth, Michael P. Chenaille, Mark A. Ricca, Kimberly Mauch, Erika Sanchez-Chopitea, Travis J. Kroger, William M. Perry, Michael L. CasazzaPinyon and juniper encroachment into sagebrush ecosystems impacts distribution and survival of greater sage-grouse
In sagebrush (Artemisia spp.) ecosystems, encroachment of pinyon (Pinus spp.) and juniper (Juniperus spp.; hereafter, “pinyon-juniper”) trees has increased dramatically since European settlement. Understanding the impacts of this encroachment on behavioral decisions, distributions, and population dynamics of greater sage-grouse (Centrocercus urophasianus) and other sagebrush obligate species couldAuthorsPeter S. Coates, Brian G. Prochazka, Mark A. Ricca, K. Benjamin Gustafson, Pilar T. Ziegler, Michael L. Casazza - News
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.