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
Hawaiian forest bird trends: using log-linear models to assess long-term trends is supported by model diagnostics and assumptions (reply to Freed and Cann 2013)
Freed and Cann (2013) criticized our use of linear models to assess trends in the status of Hawaiian forest birds through time (Camp et al. 2009a, 2009b, 2010) by questioning our sampling scheme, whether we met model assumptions, and whether we ignored short-term changes in the population time series. In the present paper, we address these concerns and reiterate that our results do not support the
Authors
Richard J. Camp, Thane K. Pratt, P. Marcos Gorresen, Bethany L. Woodworth, John J. Jeffrey
Monitoring Hawaiian waterbirds: evaluation of sampling methods to produce reliable estimates
We conducted field trials to assess several different methods of estimating the abundance of four endangered Hawaiian waterbirds: the Hawaiian duck (Anas wyvilliana), Hawaiian coot (Fulica alai), Hawaiian common moorhen (Gallinula chloropus sandvicensis) and Hawaiian stilt (Himantopus mexicanus knudseni). At two sites on Oʽahu, James Campbell National Wildlife Refuge and Hamakua Marsh, we conducte
Authors
Richard J. Camp, Kevin W. Brinck, Eben H. Paxton, Christina Leopold
Status of forest birds on Rota, Mariana Islands
The western Pacific island of Rota is the third largest human inhabited island in the Mariana archipelago, and is designated an Endemic Bird Area. Between 1982 and 2012, 12 point-transect distance sampling surveys were conducted to assess population status. Surveys did not consistently sample the entire island; thus, we used a ratio estimator to estimate bird abundances in strata not sampled durin
Authors
Richard J. Camp, Kevin W. Brinck, P. Marcos Gorresen, Fred A. Amidon, Paul M. Radley, S. Paul Berkowitz, Paul C. Banko
Changing climate and the altitudinal range of avian malaria in the Hawaiian Islands: an ongoing conservation crisis on the island of Kaua'i
Transmission of avian malaria in the Hawaiian Islands varies across altitudinal gradients and is greatest at elevations below 1500 m where both temperature and moisture are favorable for the sole mosquito vector, Culex quinquefasciatus, and extrinsic sporogonic development of the parasite, Plasmodium relictum. Potential consequences of global warming on this system have been recognized for over a
Authors
Carter T. Atkinson, Ruth B. Utzurrum, Dennis A. LaPointe, Richard J. Camp, Lisa H. Crampton, Jeffrey T. Foster, Thomas W. Giambelluca
Terrestrial bird population trends on Aguiguan (Goat Island), Mariana Islands
The island of Aguiguan is part of the Mariana archipelago and currently supports populations of four endemic species, including one endemic genus, Cleptornis. Bird population trends since 1982 were recently assessed on the neighbouring islands of Saipan, Tinian, and Rota indicating declines in some native species. Point-transect surveys were conducted in 2008 by the U.S. Fish and Wildlife Service
Authors
Fred Amidon, Richard J. Camp, Ann P. Marshall, Thane K. Pratt, Laura Williams, Paul Radley, Justine B. Cruz
Palila abundance estimates and trends
The palila (Loxioides bailleui) population was surveyed annually during 1998−2014 on Mauna Kea Volcano to determine abundance, population trend, and spatial distribution. In the latest surveys, the 2013 population was estimated at 1,492−2,132 birds (point estimate: 1,799) and the 2014 population was estimated at 1,697−2,508 (point estimate: 2,070). Similar numbers of palila were detected during th
Authors
Paul C. Banko, Kevin W. Brink, Richard Camp
Pacific Island landbird monitoring annual report, Hawaii Volcanoes National Park, tract group 1 and 2, 2010
In concordance with the stated role of the I&M Program, the objectives of this survey were to provide information for monitoring long-term trends in forest bird distribution, density, and abundance in HAVO. Ultimately, this information will help to inform and implement management actions to stabilize and/or increase bird populations.
Authors
S. W. Judge, J. M. Gaudioso, B. H. Hsu, Richard J. Camp, P. J. Hart
Abundance, distribution, and population trends of the iconic Hawaiian Honeycreeper, the ʻIʻiwi (Vestiaria coccinea) throughout the Hawaiian Islands
Naturalists in the 1800s described the ʻIʻiwi (Vestiaria coccinea) as one of the most abundant forest birds, detected in forested areas from sea level to tree line across all the major Hawaiian Islands. However, in the late 1800s, ʻIʻiwi began to disappear from low elevation forests, and by the mid-1900s, the species was largely absent from low- and mid-elevation areas. Today, ʻIʻiwi are restricte
Authors
Eben H. Paxton, P. Marcos Gorresen, Richard J. Camp
Response of palila and other subalpine Hawaiian forest bird species to prolonged drought and habitat degradation by feral ungulates
Extinction has claimed half of all historically-known Hawaiian passerines, and today many extant species are increasingly threatened due to the combined effects of invasive species and climate change. Habitat disturbance has affected populations of feeding specialists most profoundly, and our results indicate that specialists continue to be most vulnerable, although even some abundant, introduced,
Authors
Paul C. Banko, Richard J. Camp, Chris Farmer, Kevin W. Brinck, David L. Leonard, Robert M. Stephens
2011 Kiwikiu (Maui Parrotbill) and Maui 'Alauahio abundance estimates and the effect of sampling effort on power to detect a trend
The Kiwikiu (Pseudonestor xanthophrys), also called the Maui Parrotbill, is an endangered,
forest bird found only in high elevation, wet forest of the eastern portion of Maui Island. Recent
surveys, conducted at five year intervals, have revealed wide variation in abundance estimates
(Camp et al. 2009). Effective management and conservation requires accurate estimates of
abundance, which is di
Authors
Kevin W. Brinck, Richard J. Camp, P. Marcos Gorresen, David L. Leonard, Hanna L. Mounce, Kelly J. Iknayan, Eben H. Paxton
Developing accurate survey methods for estimating population sizes and trends of the critically endangered Nihoa Millerbird and Nihoa Finch.
This report describes the results of a comparative study of bird survey methods undertaken for the purpose of improving assessments of the conservation status for the two endemic passerines on the Island of Nihoa—Nihoa Millerbird (Sylviidae: Acrocephalus familiaris kingi) and Nihoa Finch (Fringilidae: Telespiza ultima; also referred herein as millerbird and finch)—both listed as endangered under t
Authors
P. Marcos Gorresen, Richard J. Camp, Kevin W. Brinck, Chris Farmer
Bird populations on the Island of Tinian: persistence despite wholesale loss of native forests
Bird habitat on the island of Tinian, Mariana Islands, has been substantially altered, and only around 5% of the island has native forest today. The modern bird fauna is likely to be a subset of the original avifauna where only species tolerant to native forest loss and human disturbance have survived. Avian surveys were conducted on the island in 2008 by the U.S. Fish and Wildlife Service to prov
Authors
Richard J. Camp, Frederick A. Amidon, Ann P. Marshall, Thane K. Pratt
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Filter Total Items: 70
Hawaiian forest bird trends: using log-linear models to assess long-term trends is supported by model diagnostics and assumptions (reply to Freed and Cann 2013)
Freed and Cann (2013) criticized our use of linear models to assess trends in the status of Hawaiian forest birds through time (Camp et al. 2009a, 2009b, 2010) by questioning our sampling scheme, whether we met model assumptions, and whether we ignored short-term changes in the population time series. In the present paper, we address these concerns and reiterate that our results do not support theAuthorsRichard J. Camp, Thane K. Pratt, P. Marcos Gorresen, Bethany L. Woodworth, John J. JeffreyMonitoring Hawaiian waterbirds: evaluation of sampling methods to produce reliable estimates
We conducted field trials to assess several different methods of estimating the abundance of four endangered Hawaiian waterbirds: the Hawaiian duck (Anas wyvilliana), Hawaiian coot (Fulica alai), Hawaiian common moorhen (Gallinula chloropus sandvicensis) and Hawaiian stilt (Himantopus mexicanus knudseni). At two sites on Oʽahu, James Campbell National Wildlife Refuge and Hamakua Marsh, we conducteAuthorsRichard J. Camp, Kevin W. Brinck, Eben H. Paxton, Christina LeopoldStatus of forest birds on Rota, Mariana Islands
The western Pacific island of Rota is the third largest human inhabited island in the Mariana archipelago, and is designated an Endemic Bird Area. Between 1982 and 2012, 12 point-transect distance sampling surveys were conducted to assess population status. Surveys did not consistently sample the entire island; thus, we used a ratio estimator to estimate bird abundances in strata not sampled durinAuthorsRichard J. Camp, Kevin W. Brinck, P. Marcos Gorresen, Fred A. Amidon, Paul M. Radley, S. Paul Berkowitz, Paul C. BankoChanging climate and the altitudinal range of avian malaria in the Hawaiian Islands: an ongoing conservation crisis on the island of Kaua'i
Transmission of avian malaria in the Hawaiian Islands varies across altitudinal gradients and is greatest at elevations below 1500 m where both temperature and moisture are favorable for the sole mosquito vector, Culex quinquefasciatus, and extrinsic sporogonic development of the parasite, Plasmodium relictum. Potential consequences of global warming on this system have been recognized for over aAuthorsCarter T. Atkinson, Ruth B. Utzurrum, Dennis A. LaPointe, Richard J. Camp, Lisa H. Crampton, Jeffrey T. Foster, Thomas W. GiambellucaTerrestrial bird population trends on Aguiguan (Goat Island), Mariana Islands
The island of Aguiguan is part of the Mariana archipelago and currently supports populations of four endemic species, including one endemic genus, Cleptornis. Bird population trends since 1982 were recently assessed on the neighbouring islands of Saipan, Tinian, and Rota indicating declines in some native species. Point-transect surveys were conducted in 2008 by the U.S. Fish and Wildlife ServiceAuthorsFred Amidon, Richard J. Camp, Ann P. Marshall, Thane K. Pratt, Laura Williams, Paul Radley, Justine B. CruzPalila abundance estimates and trends
The palila (Loxioides bailleui) population was surveyed annually during 1998−2014 on Mauna Kea Volcano to determine abundance, population trend, and spatial distribution. In the latest surveys, the 2013 population was estimated at 1,492−2,132 birds (point estimate: 1,799) and the 2014 population was estimated at 1,697−2,508 (point estimate: 2,070). Similar numbers of palila were detected during thAuthorsPaul C. Banko, Kevin W. Brink, Richard CampPacific Island landbird monitoring annual report, Hawaii Volcanoes National Park, tract group 1 and 2, 2010
In concordance with the stated role of the I&M Program, the objectives of this survey were to provide information for monitoring long-term trends in forest bird distribution, density, and abundance in HAVO. Ultimately, this information will help to inform and implement management actions to stabilize and/or increase bird populations.AuthorsS. W. Judge, J. M. Gaudioso, B. H. Hsu, Richard J. Camp, P. J. HartAbundance, distribution, and population trends of the iconic Hawaiian Honeycreeper, the ʻIʻiwi (Vestiaria coccinea) throughout the Hawaiian Islands
Naturalists in the 1800s described the ʻIʻiwi (Vestiaria coccinea) as one of the most abundant forest birds, detected in forested areas from sea level to tree line across all the major Hawaiian Islands. However, in the late 1800s, ʻIʻiwi began to disappear from low elevation forests, and by the mid-1900s, the species was largely absent from low- and mid-elevation areas. Today, ʻIʻiwi are restricteAuthorsEben H. Paxton, P. Marcos Gorresen, Richard J. CampResponse of palila and other subalpine Hawaiian forest bird species to prolonged drought and habitat degradation by feral ungulates
Extinction has claimed half of all historically-known Hawaiian passerines, and today many extant species are increasingly threatened due to the combined effects of invasive species and climate change. Habitat disturbance has affected populations of feeding specialists most profoundly, and our results indicate that specialists continue to be most vulnerable, although even some abundant, introduced,AuthorsPaul C. Banko, Richard J. Camp, Chris Farmer, Kevin W. Brinck, David L. Leonard, Robert M. Stephens2011 Kiwikiu (Maui Parrotbill) and Maui 'Alauahio abundance estimates and the effect of sampling effort on power to detect a trend
The Kiwikiu (Pseudonestor xanthophrys), also called the Maui Parrotbill, is an endangered, forest bird found only in high elevation, wet forest of the eastern portion of Maui Island. Recent surveys, conducted at five year intervals, have revealed wide variation in abundance estimates (Camp et al. 2009). Effective management and conservation requires accurate estimates of abundance, which is diAuthorsKevin W. Brinck, Richard J. Camp, P. Marcos Gorresen, David L. Leonard, Hanna L. Mounce, Kelly J. Iknayan, Eben H. PaxtonDeveloping accurate survey methods for estimating population sizes and trends of the critically endangered Nihoa Millerbird and Nihoa Finch.
This report describes the results of a comparative study of bird survey methods undertaken for the purpose of improving assessments of the conservation status for the two endemic passerines on the Island of Nihoa—Nihoa Millerbird (Sylviidae: Acrocephalus familiaris kingi) and Nihoa Finch (Fringilidae: Telespiza ultima; also referred herein as millerbird and finch)—both listed as endangered under tAuthorsP. Marcos Gorresen, Richard J. Camp, Kevin W. Brinck, Chris FarmerBird populations on the Island of Tinian: persistence despite wholesale loss of native forests
Bird habitat on the island of Tinian, Mariana Islands, has been substantially altered, and only around 5% of the island has native forest today. The modern bird fauna is likely to be a subset of the original avifauna where only species tolerant to native forest loss and human disturbance have survived. Avian surveys were conducted on the island in 2008 by the U.S. Fish and Wildlife Service to provAuthorsRichard J. Camp, Frederick A. Amidon, Ann P. Marshall, Thane K. Pratt - News