Richard J Camp
Specialty: Quantitative ecology; abundance and demographic modeling; avian ecology and conservation
Research Interests: Status and trend estimation; Bayesian inference; hierarchical modeling; spatial and temporal modeling; population dynamics modeling
Personal Interests: Running, bicycling, beer brewing and family
Education and Certifications
Ph.D. 2020 Statistics, University of St Andrews, St Andrews, Scotland
M.S. 1995 Wildlife Biology, Colorado State University, Fort Collins, CO
B.S. 1991 Wildlife Management, University of Minnesota, Minneapolis, MN
Science and Products
Filter Total Items: 70
A spatial model of bird abundance as adjusted for detection probability
Modeling the spatial distribution of animals can be complicated by spatial and temporal effects (i.e. spatial autocorrelation and trends in abundance over time) and other factors such as imperfect detection probabilities and observation-related nuisance variables. Recent advances in modeling have demonstrated various approaches that handle most of these factors but which require a degree of sampli
Authors
P. M. Gorresen, G.P. Mcmillan, R.J. Camp, T.K. Pratt
Population trends of native Hawaiian forest birds, 1976–2008: the data and statistical analyses
The Hawaii Forest Bird Interagency Database Project has produced a centralized database of forest bird survey data collected in Hawai`i since the mid-1970s. The database contains over 1.1 million bird observation records of 90 species from almost 600 surveys on the main Hawaiian Islands—a dataset including nearly all surveys from that period. The primary objective has been to determine the status
Authors
Richard J. Camp, P. Marcos Gorresen, Thane K. Pratt, Bethany L. Woodworth
Ecology in the information age: Patterns of use and attrition rates of internet-based citations in ESA journals, 1997–2005
As the amount of information available on the internet has increased, so too has the number of citations to network-accessible information in scholarly research. We searched all papers in four Ecological Society of America journals from 1997 to 2005 for articles containing a citation to material on the internet. We then tested the links to determine whether the information cited in the paper was s
Authors
Jeffrey J. Duda, Richard J. Camp
Long-term population monitoring: Lessons learned from an endangered passerine in Hawai‘i
Obtaining reliable population estimates is crucial to monitoring endangered species and developing recovery strategies. The palila (Loxioides bailleui) is an endangered seed-eating Hawaiian honeycreeper restricted to the subalpine forests of Mauna Kea, a volcano on the island of Hawai‘i, USA. The species is vulnerable to extinction primarily because >90% of the population is concentrated in <30 km
Authors
Luanne Johnson, Richard J. Camp, Kevin W. Brinck, Paul C. Banko
Ecology of a population of subsidized predators: Common ravens in the central Mojave Desert, California
Human subsidies have resulted in the rapid growth of populations of common ravens (Corvus corax) in the Mojave Desert. This is a management concern because ravens prey on threatened desert tortoises (Gopherus agassizii). We conducted weekly counts for 29 months at 10 sites on the US Army's National Training Center, Fort Irwin, California to evaluate factors affecting the distribution of ravens. Ra
Authors
W.I. Boarman, M.A. Patten, R.J. Camp, S.J. Collis
Problems with sampling desert tortoises: A simulation analysis based on field data
The desert tortoise (Gopherus agassizii) was listed as a U.S. threatened species in 1990 based largely on population declines inferred from mark-recapture surveys of 2.59-km2 (1-mi2) plots. Since then, several census methods have been proposed and tested, but all methods still pose logistical or statistical difficulties. We conducted computer simulations using actual tortoise location data from 2
Authors
J.E. Freilich, R.J. Camp, J.J. Duda, A.E. Karl
Population trends of Mariana Crow Corvus kubaryi on Rota, Commonwealth of the Northern Mariana Islands
Endemic to the islands of Guam and Rota in the Mariana Islands, Mariana Crow Corvus kubaryi is the only corvid in Micronesia. Currently, it survives on Guam only because of translocation of individuals from Rota (1999-2003). Island-wide surveys in 1982 and 1995 on Rota yielded population estimates of 1,348 and 592 respectively, indicating a 56% decrease in only 13 years. A sharp decline in the onl
Authors
S. Plentovich, J.M. Morton, J. Bart, R.J. Camp, M. Lusk, N. Johnson, E. VanderWerf
Status of forest birds in the Central Windward Region of Hawai'i Island: population trends and power analyses
No abstract available.
Authors
P. Marcos Gorresen, Richard J. Camp, Thane K. Pratt, Bethany L. Woodworth
Evidence of change in a low-elevation forest bird community of Hawai'i since 1979
We evaluated the abundance and distribution of low-elevation forest birds on windward Hawai'i Island during August 1993-February 1994, and present evidence of changes in the species composition of the forest bird community since 1979. Endemic Hawaiian birds occurred in native-dominated forests as low as 120 m elevation. Non-native species were detected at all survey locations. We observed non-nati
Authors
Michelle H. Reynolds, Richard J. Camp, Bonnie M. B. Nielson, James D. Jacobi
Predatory bird populations in the East Mojave Desert, California
No abstract available.
Authors
R.L. Knight, R.J. Camp, W.I. Boarman, H.A.L. Knight
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Filter Total Items: 70
A spatial model of bird abundance as adjusted for detection probability
Modeling the spatial distribution of animals can be complicated by spatial and temporal effects (i.e. spatial autocorrelation and trends in abundance over time) and other factors such as imperfect detection probabilities and observation-related nuisance variables. Recent advances in modeling have demonstrated various approaches that handle most of these factors but which require a degree of sampliAuthorsP. M. Gorresen, G.P. Mcmillan, R.J. Camp, T.K. PrattPopulation trends of native Hawaiian forest birds, 1976–2008: the data and statistical analyses
The Hawaii Forest Bird Interagency Database Project has produced a centralized database of forest bird survey data collected in Hawai`i since the mid-1970s. The database contains over 1.1 million bird observation records of 90 species from almost 600 surveys on the main Hawaiian Islands—a dataset including nearly all surveys from that period. The primary objective has been to determine the statusAuthorsRichard J. Camp, P. Marcos Gorresen, Thane K. Pratt, Bethany L. WoodworthEcology in the information age: Patterns of use and attrition rates of internet-based citations in ESA journals, 1997–2005
As the amount of information available on the internet has increased, so too has the number of citations to network-accessible information in scholarly research. We searched all papers in four Ecological Society of America journals from 1997 to 2005 for articles containing a citation to material on the internet. We then tested the links to determine whether the information cited in the paper was sAuthorsJeffrey J. Duda, Richard J. CampLong-term population monitoring: Lessons learned from an endangered passerine in Hawai‘i
Obtaining reliable population estimates is crucial to monitoring endangered species and developing recovery strategies. The palila (Loxioides bailleui) is an endangered seed-eating Hawaiian honeycreeper restricted to the subalpine forests of Mauna Kea, a volcano on the island of Hawai‘i, USA. The species is vulnerable to extinction primarily because >90% of the population is concentrated in <30 kmAuthorsLuanne Johnson, Richard J. Camp, Kevin W. Brinck, Paul C. BankoEcology of a population of subsidized predators: Common ravens in the central Mojave Desert, California
Human subsidies have resulted in the rapid growth of populations of common ravens (Corvus corax) in the Mojave Desert. This is a management concern because ravens prey on threatened desert tortoises (Gopherus agassizii). We conducted weekly counts for 29 months at 10 sites on the US Army's National Training Center, Fort Irwin, California to evaluate factors affecting the distribution of ravens. RaAuthorsW.I. Boarman, M.A. Patten, R.J. Camp, S.J. CollisProblems with sampling desert tortoises: A simulation analysis based on field data
The desert tortoise (Gopherus agassizii) was listed as a U.S. threatened species in 1990 based largely on population declines inferred from mark-recapture surveys of 2.59-km2 (1-mi2) plots. Since then, several census methods have been proposed and tested, but all methods still pose logistical or statistical difficulties. We conducted computer simulations using actual tortoise location data from 2AuthorsJ.E. Freilich, R.J. Camp, J.J. Duda, A.E. KarlPopulation trends of Mariana Crow Corvus kubaryi on Rota, Commonwealth of the Northern Mariana Islands
Endemic to the islands of Guam and Rota in the Mariana Islands, Mariana Crow Corvus kubaryi is the only corvid in Micronesia. Currently, it survives on Guam only because of translocation of individuals from Rota (1999-2003). Island-wide surveys in 1982 and 1995 on Rota yielded population estimates of 1,348 and 592 respectively, indicating a 56% decrease in only 13 years. A sharp decline in the onlAuthorsS. Plentovich, J.M. Morton, J. Bart, R.J. Camp, M. Lusk, N. Johnson, E. VanderWerfStatus of forest birds in the Central Windward Region of Hawai'i Island: population trends and power analyses
No abstract available.AuthorsP. Marcos Gorresen, Richard J. Camp, Thane K. Pratt, Bethany L. WoodworthEvidence of change in a low-elevation forest bird community of Hawai'i since 1979
We evaluated the abundance and distribution of low-elevation forest birds on windward Hawai'i Island during August 1993-February 1994, and present evidence of changes in the species composition of the forest bird community since 1979. Endemic Hawaiian birds occurred in native-dominated forests as low as 120 m elevation. Non-native species were detected at all survey locations. We observed non-natiAuthorsMichelle H. Reynolds, Richard J. Camp, Bonnie M. B. Nielson, James D. JacobiPredatory bird populations in the East Mojave Desert, California
No abstract available.AuthorsR.L. Knight, R.J. Camp, W.I. Boarman, H.A.L. Knight - News