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.
Filter Total Items: 19
No Result Found
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: 74
Polycyclic aromatic hydrocarbon exposure in Steller's eiders (Polysticta stelleri) and harlequin ducks (Histronicus histronicus) in the Eastern Aleutian Islands, Alaska, USA Polycyclic aromatic hydrocarbon exposure in Steller's eiders (Polysticta stelleri) and harlequin ducks (Histronicus histronicus) in the Eastern Aleutian Islands, Alaska, USA
Seaducks may be affected by harmful levels of polycyclic aromatic hydrocarbons (PAHs) at seaports near the Arctic. As an indicator of exposure to PAHs, we measured hepatic enzyme 7-ethoxyresorufin-O-deethylase activity (EROD) to determine cytochrome P4501A induction in Steller's eiders (Polysticta stelleri) and Harlequin ducks (Histronicus histronicus) from Unalaska, Popof, and Unga...
Authors
A.K. Miles, Paul L. Flint, K.A. Trust, M.A. Ricca, S.E. Spring, D.E. Arrieta, T. Hollmen, B.W. Wilson
Effect of lipid extraction on analyses of stable carbon and stable nitrogen isotopes in coastal organisms of the Aleutian archipelago Effect of lipid extraction on analyses of stable carbon and stable nitrogen isotopes in coastal organisms of the Aleutian archipelago
We tested whether extracting lipids reduced confounding variation in ??13C and ??15N values by analyzing paired lipid-extracted (LE) and non-lipid-extracted (NLE) samples of bald eagle (Haliaeetus leucocephalus (L., 1766)) whole eggs, muscle tissue from nine seabird and one terrestrial bird species, muscle tissue from four marine fish species, and blue mussels (Mytilus edulis L., 1758)...
Authors
M.A. Ricca, A.K. Miles, R.G. Anthony, X. Deng, S. S. O. Hung
Environmental contaminants in bald eagle eggs from the Aleutian archipelago Environmental contaminants in bald eagle eggs from the Aleutian archipelago
We collected 136 fresh and unhatched eggs from bald eagle (Haliaeetus leucocephalus) nests and assessed productivity on eight islands in the Aleutian archipelago, 2000 to 2002. Egg contents were analyzed for a broad spectrum of organochlorine (OC) contaminants, mercury (Hg), and stable isotopes of carbon (??13C) and nitrogen (??15N). Concentrations of polychlorinated biphenyls (??PCBs)...
Authors
R.G. Anthony, A.K. Miles, M.A. Ricca, J. A. Estes
Mercury in birds of the San Francisco Bay-Delta: trophic pathways, bioaccumulation and ecotoxicological risk to avian reproduction Mercury in birds of the San Francisco Bay-Delta: trophic pathways, bioaccumulation and ecotoxicological risk to avian reproduction
No abstract available at this time
Authors
S.E. Schwarzbach, T.H. Suchanek, G. H. Heinz, Joshua T. Ackerman, Collin A. Eagles-Smith, T.L. Adelsbach, John Y. Takekawa, A.K. Miles, D. J. Hoffman, Wainwright-De La Cruz, S.E. Spring, M.A. Ricca, T. Maurer
Bald Eagles consume Emperor Geese during late-winter in the Aleutian Archipelago Bald Eagles consume Emperor Geese during late-winter in the Aleutian Archipelago
Emperor Geese (Chen canagica) are a species of concern because their population has declined rapidly since the mid-1960s and continues to remain below management objectives (Petersen et al. 1994). Emperor Geese are restricted primarily to Alaska and exhibit an east-west migration pattern, whereby most birds begin breeding on the Yukon-Kuskokwim Delta by mid-May, stage on the Alaska...
Authors
Mark A. Ricca, Robert G. Anthony, Jeffrey C. Williams
Roosevelt elk density and social segregation: Foraging behavior and females avoiding larger groups of males Roosevelt elk density and social segregation: Foraging behavior and females avoiding larger groups of males
Intersexual social segregation at small spatial scales is prevalent in ruminants that are sexually dimorphic in body size. Explaining social segregation, however, from hypotheses of how intersexual size differences affects the foraging process of males and females has had mixed results. We studied whether body size influences on forage behavior, intersexual social incompatibility or both...
Authors
F. Weckerly, K. McFarland, M. Ricca, K. Meyer
Spatial use and habitat associations of Columbian white-tailed deer fawns in southwestern Oregon Spatial use and habitat associations of Columbian white-tailed deer fawns in southwestern Oregon
Fawns represent a critical life history stage in the dynamics of deer populations, yet little recent information is available on the ecology of neonatal Columbian white-tailed deer (CWTD), a geographically isolated and federally endangered sub-species. We described home ranges, areas of concentrated use, and habitat associations of CWTD fawns in southwestern Oregon during the summers of...
Authors
M.A. Ricca, R.G. Anthony, Dewaine H. Jackson, S.A. Wolfe
Body weight and rumen-reticulum capacity in tule elk and mule deer Body weight and rumen-reticulum capacity in tule elk and mule deer
The relationship between body size and rumen-reticulum capacity among conspecific individuals is predicted to be isometric. We examined whether the relationship between body weight and rumen-reticulum capacity was isometric in adult male and female rule elk (Cervus elaphus nannodes) and in adult female mule deer (Odocoileus hemionus). We detected no effect of sex on this relationship in...
Authors
F.W. Weckerly, V. C. Bleich, C.-L.B. Chetkiewicz, M.A. Ricca
Survival of Columbian white-tailed deer in western Oregon Survival of Columbian white-tailed deer in western Oregon
Columbian white-tailed deer (Odocoileus virginianus leucurus; CWTD) are an endangered subspecies on which little demographic information exists. We determined survival rates and causes of mortality for 64 radiocol- lared adults from 1996 to 1998, and for 63 radiocollared neonatal fawns during the summer and fall months of 1996-2001 in Douglas County, Oregon, USA. Annual adult survival...
Authors
Mark A. Ricca, Robert G. Anthony, Dewaine H. Jackson, Scott A. Wolfe
Report on field activities at Adak and the western Aleutians, 2002 Report on field activities at Adak and the western Aleutians, 2002
No abstract available at this time
Authors
J. A. Estes, R.G. Anthony, Walter M. Jarman, A.K. Miles, James L. Bodkin, M.A. Ricca
Sexual segregation in Roosevelt Elk: Cropping rates and aggression in mixed sex groups Sexual segregation in Roosevelt Elk: Cropping rates and aggression in mixed sex groups
Few studies of sexual segregation in ruminants have tested widely invoked mechanisms of segregation in mixed-sex groups. In a sexually segregated population of Roosevelt elk (Cervus elaphus roosevelti), we examined if adult males had reduced intake of forage when in mixed-sex groups and if intersexual differences in aggression caused females to avoid males. Based on a mechanistic model...
Authors
Floyd F. Weckerly, Mark A. Ricca, Katherin P. Meyer
Report on field activities at Adak and the western Aleutians, 2001 Report on field activities at Adak and the western Aleutians, 2001
No abstract available at this time
Authors
J. A. Estes, R.G. Anthony, Walter M. Jarman, A.K. Miles, James L. Bodkin, M.A. Ricca
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.
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.
Filter Total Items: 19
No Result Found
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: 74
Polycyclic aromatic hydrocarbon exposure in Steller's eiders (Polysticta stelleri) and harlequin ducks (Histronicus histronicus) in the Eastern Aleutian Islands, Alaska, USA Polycyclic aromatic hydrocarbon exposure in Steller's eiders (Polysticta stelleri) and harlequin ducks (Histronicus histronicus) in the Eastern Aleutian Islands, Alaska, USA
Seaducks may be affected by harmful levels of polycyclic aromatic hydrocarbons (PAHs) at seaports near the Arctic. As an indicator of exposure to PAHs, we measured hepatic enzyme 7-ethoxyresorufin-O-deethylase activity (EROD) to determine cytochrome P4501A induction in Steller's eiders (Polysticta stelleri) and Harlequin ducks (Histronicus histronicus) from Unalaska, Popof, and Unga...
Authors
A.K. Miles, Paul L. Flint, K.A. Trust, M.A. Ricca, S.E. Spring, D.E. Arrieta, T. Hollmen, B.W. Wilson
Effect of lipid extraction on analyses of stable carbon and stable nitrogen isotopes in coastal organisms of the Aleutian archipelago Effect of lipid extraction on analyses of stable carbon and stable nitrogen isotopes in coastal organisms of the Aleutian archipelago
We tested whether extracting lipids reduced confounding variation in ??13C and ??15N values by analyzing paired lipid-extracted (LE) and non-lipid-extracted (NLE) samples of bald eagle (Haliaeetus leucocephalus (L., 1766)) whole eggs, muscle tissue from nine seabird and one terrestrial bird species, muscle tissue from four marine fish species, and blue mussels (Mytilus edulis L., 1758)...
Authors
M.A. Ricca, A.K. Miles, R.G. Anthony, X. Deng, S. S. O. Hung
Environmental contaminants in bald eagle eggs from the Aleutian archipelago Environmental contaminants in bald eagle eggs from the Aleutian archipelago
We collected 136 fresh and unhatched eggs from bald eagle (Haliaeetus leucocephalus) nests and assessed productivity on eight islands in the Aleutian archipelago, 2000 to 2002. Egg contents were analyzed for a broad spectrum of organochlorine (OC) contaminants, mercury (Hg), and stable isotopes of carbon (??13C) and nitrogen (??15N). Concentrations of polychlorinated biphenyls (??PCBs)...
Authors
R.G. Anthony, A.K. Miles, M.A. Ricca, J. A. Estes
Mercury in birds of the San Francisco Bay-Delta: trophic pathways, bioaccumulation and ecotoxicological risk to avian reproduction Mercury in birds of the San Francisco Bay-Delta: trophic pathways, bioaccumulation and ecotoxicological risk to avian reproduction
No abstract available at this time
Authors
S.E. Schwarzbach, T.H. Suchanek, G. H. Heinz, Joshua T. Ackerman, Collin A. Eagles-Smith, T.L. Adelsbach, John Y. Takekawa, A.K. Miles, D. J. Hoffman, Wainwright-De La Cruz, S.E. Spring, M.A. Ricca, T. Maurer
Bald Eagles consume Emperor Geese during late-winter in the Aleutian Archipelago Bald Eagles consume Emperor Geese during late-winter in the Aleutian Archipelago
Emperor Geese (Chen canagica) are a species of concern because their population has declined rapidly since the mid-1960s and continues to remain below management objectives (Petersen et al. 1994). Emperor Geese are restricted primarily to Alaska and exhibit an east-west migration pattern, whereby most birds begin breeding on the Yukon-Kuskokwim Delta by mid-May, stage on the Alaska...
Authors
Mark A. Ricca, Robert G. Anthony, Jeffrey C. Williams
Roosevelt elk density and social segregation: Foraging behavior and females avoiding larger groups of males Roosevelt elk density and social segregation: Foraging behavior and females avoiding larger groups of males
Intersexual social segregation at small spatial scales is prevalent in ruminants that are sexually dimorphic in body size. Explaining social segregation, however, from hypotheses of how intersexual size differences affects the foraging process of males and females has had mixed results. We studied whether body size influences on forage behavior, intersexual social incompatibility or both...
Authors
F. Weckerly, K. McFarland, M. Ricca, K. Meyer
Spatial use and habitat associations of Columbian white-tailed deer fawns in southwestern Oregon Spatial use and habitat associations of Columbian white-tailed deer fawns in southwestern Oregon
Fawns represent a critical life history stage in the dynamics of deer populations, yet little recent information is available on the ecology of neonatal Columbian white-tailed deer (CWTD), a geographically isolated and federally endangered sub-species. We described home ranges, areas of concentrated use, and habitat associations of CWTD fawns in southwestern Oregon during the summers of...
Authors
M.A. Ricca, R.G. Anthony, Dewaine H. Jackson, S.A. Wolfe
Body weight and rumen-reticulum capacity in tule elk and mule deer Body weight and rumen-reticulum capacity in tule elk and mule deer
The relationship between body size and rumen-reticulum capacity among conspecific individuals is predicted to be isometric. We examined whether the relationship between body weight and rumen-reticulum capacity was isometric in adult male and female rule elk (Cervus elaphus nannodes) and in adult female mule deer (Odocoileus hemionus). We detected no effect of sex on this relationship in...
Authors
F.W. Weckerly, V. C. Bleich, C.-L.B. Chetkiewicz, M.A. Ricca
Survival of Columbian white-tailed deer in western Oregon Survival of Columbian white-tailed deer in western Oregon
Columbian white-tailed deer (Odocoileus virginianus leucurus; CWTD) are an endangered subspecies on which little demographic information exists. We determined survival rates and causes of mortality for 64 radiocol- lared adults from 1996 to 1998, and for 63 radiocollared neonatal fawns during the summer and fall months of 1996-2001 in Douglas County, Oregon, USA. Annual adult survival...
Authors
Mark A. Ricca, Robert G. Anthony, Dewaine H. Jackson, Scott A. Wolfe
Report on field activities at Adak and the western Aleutians, 2002 Report on field activities at Adak and the western Aleutians, 2002
No abstract available at this time
Authors
J. A. Estes, R.G. Anthony, Walter M. Jarman, A.K. Miles, James L. Bodkin, M.A. Ricca
Sexual segregation in Roosevelt Elk: Cropping rates and aggression in mixed sex groups Sexual segregation in Roosevelt Elk: Cropping rates and aggression in mixed sex groups
Few studies of sexual segregation in ruminants have tested widely invoked mechanisms of segregation in mixed-sex groups. In a sexually segregated population of Roosevelt elk (Cervus elaphus roosevelti), we examined if adult males had reduced intake of forage when in mixed-sex groups and if intersexual differences in aggression caused females to avoid males. Based on a mechanistic model...
Authors
Floyd F. Weckerly, Mark A. Ricca, Katherin P. Meyer
Report on field activities at Adak and the western Aleutians, 2001 Report on field activities at Adak and the western Aleutians, 2001
No abstract available at this time
Authors
J. A. Estes, R.G. Anthony, Walter M. Jarman, A.K. Miles, James L. Bodkin, M.A. Ricca
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.