Richard J Camp, PhD
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: 13
Hawaii Volcanoes National Park Landbird Surveys 2015-2016 Hawaii Volcanoes National Park Landbird Surveys 2015-2016
Hawai`i Volcanoes National Park (HAVO) was surveyed for landbirds and landbird habitat from February through April 2015 and February through April 2016. This information provides the second datum in the time-series of Pacific Island Network (PACN) monitoring for long-term trends in landbird distribution, density, and abundance. Initial PACN surveys were conducted in 2010 and are repeated...
Filter Total Items: 100
Population trends of native and non-native forest birds on the island of Molokai, Hawaii Population trends of native and non-native forest birds on the island of Molokai, Hawaii
Hawaiʻi’s avifauna has undergone profound changes over the past 1,000 years, with many endemic bird species driven to extinction and non-native introductions reshaping forest ecosystems. On the island of Molokaʻi, habitat degradation and the introduction of mosquito-borne disease, mainly avian malaria (Plasmodium relictum), have caused extinctions and severe declines in native forest...
Authors
Lauren K. Smith, Seth Judge, Ayesha Genz, Lainie Berry, Laura Berthold, Hanna L. Mounce, Richard Camp
Counting the chorus: A bioacoustic indicator of population density Counting the chorus: A bioacoustic indicator of population density
Passive acoustic monitoring has grown in utility for tracking wildlife populations, although challenges remain when using acoustic detections to monitor population size and density. Distance sampling is considered the ‘gold standard’ for estimating animal densities but has several important limitations, especially for rare, cryptic, and high-density species. Here, we test the performance...
Authors
Amanda Navine, Richard Camp, Matthew Weldy, Tom Denton, Patrick Hart
Forest bird population status on Saipan, a small oceanic island Forest bird population status on Saipan, a small oceanic island
Tropical oceanic islands are critical biodiversity hotspots where population monitoring can help to determine the status and trends of rare and endangered species. Saipan is the second largest island in the Mariana Islands and contains many endemic and range-restricted bird species. Surveys of forest birds were conducted on Saipan using point-transect distance sampling, starting in 1982...
Authors
Trevor Bak, Steve Mullin, Emilie Kohler, Bradley Eichelberger, Richard Camp
Power analysis of water quality of standing water bodies in the Pacific Island Network, 2009–2017 Power analysis of water quality of standing water bodies in the Pacific Island Network, 2009–2017
The National Park Service (NPS) Inventory and Monitoring Division (IMD) aims to provide data on park ecosystems' health to guide management decisions. Since 2007, NPS IMD has monitored water quality in marine areas, streams, anchialine pools, wetlands, and lakes in the Pacific Island Network (PACN) national parks. To maintain long-term monitoring program efficiency, protocols are...
Authors
P. Marcos Gorresen, Richard Camp, David F Raikow
The status and conservation needs of the Micronesian Megapode (Megapodius laperouse laperouse) across the Mariana archipelago The status and conservation needs of the Micronesian Megapode (Megapodius laperouse laperouse) across the Mariana archipelago
Context Accurate baseline data for wildlife populations are important to track trends of these populations over time and to identify threats to their long-term persistence. Aims We aimed to assess the status and distribution of the little studied megapode (Megapodius laperouse laperouse) across the Mariana Islands. Methods Using passive and call playback facilitated surveys in 2008...
Authors
Paul Radley, Richard Camp, Frederick A Amidon, Ann Marshall, P. Marcos Gorresen, Curt T. Kessler
Distribution and trends of endemic Hawaiian waterbirds, 1986–2023 Distribution and trends of endemic Hawaiian waterbirds, 1986–2023
This study updates the status assessment of four endemic endangered Hawaiian waterbird species—ae‘o (Hawaiian stilt, Himantopus mexicanus knudseni), ‘alae ke‘oke‘o (Hawaiian coot, Fulica alai), ‘alae ‘ula (Hawaiian gallinule, Gallinula galeata sandvicensis), and koloa maoli (Hawaiian duck, Anas wyvilliana)—from 1986 to 2016 by incorporating new data from 2017–2023. State-space models...
Authors
P. Marcos Gorresen, Richard Camp, Eben Paxton
Factors affecting the density of Metabetaeus lohena (Decapoda: Alpheidae) at a high-density anchialine pool environment on the Kona Coast of the Island of Hawai‘i Factors affecting the density of Metabetaeus lohena (Decapoda: Alpheidae) at a high-density anchialine pool environment on the Kona Coast of the Island of Hawai‘i
Caridean shrimps (Caridea) are the dominant macroinvertebrates in most anchialine ecosystems. Hawaiian anchialine ecosystems, primarily composed of shallow surface pools connected to the ocean via hypogeal networks of cracks, tubes, and other voids, support 10 caridean shrimp species, including two federally listed as endangered. Little is known about most of these species. The objective...
Authors
Robert W. Peck, Sarah Nash, Richard Camp
Nihoa and Laysan Island passerines population abundances, trends, and habitat utilization Nihoa and Laysan Island passerines population abundances, trends, and habitat utilization
Nihoa and Laysan Island, part of the Northwestern Hawaiian Islands, are host to three endangered passerine species—Nihoa finch (Telespiza ultima), Nihoa millerbird (Acrocephalus familiaris kingi), and Laysan finch (Telespiza cantans). Using point-transect distance sampling survey records from 2010 to 2022 for Nihoa and 2013 to 2019 for Laysan Island, we estimated the density and...
Authors
Trevor Bak, Richard Camp, Chris Farmer, Rachel Rounds, Sheldon M. Plentovich, John Vetter, Paul Banko
Divergent trends in distribution and abundance of landbirds in low and high elevation habitats of the Kaʻū Rainforest Divergent trends in distribution and abundance of landbirds in low and high elevation habitats of the Kaʻū Rainforest
Federal, state, and non-governmental partners resurveyed landbirds in the Kaʻū Rainforest on the Island of Hawai‘i in 2019. Point-transect distance sampling was conducted in Hawaiʻi Volcanoes National Park, Kaʻū Forest Reserve, Kapāpala Forest Reserve, and Kapāpala Cooperative Game Management Area. This is the first comprehensive survey of the region since 2008. Through a collaborative...
Authors
Seth Judge, Kevin W. Brinck, Ayesha Genz, Lainie Berry, Jacqueline Gaudioso-Levita, Alexander Wang, Richard Camp
Evaluation of data collected by Guam Division of Aquatic and Wildlife Resources during population establishment and monitoring of ko'ko' (Hypotaenidia owstoni) on Rota, Commonwealth of the Northern Mariana Islands, and wildlife monitoring datasets on Coco Evaluation of data collected by Guam Division of Aquatic and Wildlife Resources during population establishment and monitoring of ko'ko' (Hypotaenidia owstoni) on Rota, Commonwealth of the Northern Mariana Islands, and wildlife monitoring datasets on Coco
Efforts to recover the critically endangered ko’ko’ (Guam rail, Hypotaenidia owstoni) through establishing an experimental population on the island of Rota in the Commonwealth of the Northern Mariana Islands have been ongoing for three decades. The U.S. Geological Survey collaborated with the Guam Division of Aquatic and Wildlife Resources and the Government of Guam to evaluate whether...
Authors
Richard Camp, Sarah Nash, Kristina Paxton
Environmental and geographical factors influence the occurrence and abundance of the southern house mosquito, Culex quinquefasciatus, in Hawai‘i Environmental and geographical factors influence the occurrence and abundance of the southern house mosquito, Culex quinquefasciatus, in Hawai‘i
Hawaiian honeycreepers, a group of endemic Hawaiian forest birds, are being threatened by avian malaria, a non-native disease that is driving honeycreepers populations to extinction. Avian malaria is caused by the parasite Plasmodium relictum, which is transmitted by the invasive mosquito Culex quinquefasciatus. Environmental and geographical factors play an important role in shaping...
Authors
Oswaldo Villena, Katherine McClure, Richard Camp, Dennis Lapointe, Carter T. Atkinson, Helen Sofaer, Lucas Fortini
A global ecological signal of extinction risk in marine ray-finned fishes (class Actinopterygii) A global ecological signal of extinction risk in marine ray-finned fishes (class Actinopterygii)
Many marine fish species are experiencing population declines, but their extinction risk profiles are largely understudied in comparison to their terrestrial vertebrate counterparts. Selective extinction of marine fish species may result in rapid alteration of the structure and function of ocean ecosystems. In this study, we compiled an ecological trait dataset for 8,185 species of...
Authors
Trevor Bak, Richard Camp, Noel Heim, Douglas J. McCauley, Jonathan Payne, Matthew Knope
Science and Products
Filter Total Items: 13
Hawaii Volcanoes National Park Landbird Surveys 2015-2016 Hawaii Volcanoes National Park Landbird Surveys 2015-2016
Hawai`i Volcanoes National Park (HAVO) was surveyed for landbirds and landbird habitat from February through April 2015 and February through April 2016. This information provides the second datum in the time-series of Pacific Island Network (PACN) monitoring for long-term trends in landbird distribution, density, and abundance. Initial PACN surveys were conducted in 2010 and are repeated...
Filter Total Items: 100
Population trends of native and non-native forest birds on the island of Molokai, Hawaii Population trends of native and non-native forest birds on the island of Molokai, Hawaii
Hawaiʻi’s avifauna has undergone profound changes over the past 1,000 years, with many endemic bird species driven to extinction and non-native introductions reshaping forest ecosystems. On the island of Molokaʻi, habitat degradation and the introduction of mosquito-borne disease, mainly avian malaria (Plasmodium relictum), have caused extinctions and severe declines in native forest...
Authors
Lauren K. Smith, Seth Judge, Ayesha Genz, Lainie Berry, Laura Berthold, Hanna L. Mounce, Richard Camp
Counting the chorus: A bioacoustic indicator of population density Counting the chorus: A bioacoustic indicator of population density
Passive acoustic monitoring has grown in utility for tracking wildlife populations, although challenges remain when using acoustic detections to monitor population size and density. Distance sampling is considered the ‘gold standard’ for estimating animal densities but has several important limitations, especially for rare, cryptic, and high-density species. Here, we test the performance...
Authors
Amanda Navine, Richard Camp, Matthew Weldy, Tom Denton, Patrick Hart
Forest bird population status on Saipan, a small oceanic island Forest bird population status on Saipan, a small oceanic island
Tropical oceanic islands are critical biodiversity hotspots where population monitoring can help to determine the status and trends of rare and endangered species. Saipan is the second largest island in the Mariana Islands and contains many endemic and range-restricted bird species. Surveys of forest birds were conducted on Saipan using point-transect distance sampling, starting in 1982...
Authors
Trevor Bak, Steve Mullin, Emilie Kohler, Bradley Eichelberger, Richard Camp
Power analysis of water quality of standing water bodies in the Pacific Island Network, 2009–2017 Power analysis of water quality of standing water bodies in the Pacific Island Network, 2009–2017
The National Park Service (NPS) Inventory and Monitoring Division (IMD) aims to provide data on park ecosystems' health to guide management decisions. Since 2007, NPS IMD has monitored water quality in marine areas, streams, anchialine pools, wetlands, and lakes in the Pacific Island Network (PACN) national parks. To maintain long-term monitoring program efficiency, protocols are...
Authors
P. Marcos Gorresen, Richard Camp, David F Raikow
The status and conservation needs of the Micronesian Megapode (Megapodius laperouse laperouse) across the Mariana archipelago The status and conservation needs of the Micronesian Megapode (Megapodius laperouse laperouse) across the Mariana archipelago
Context Accurate baseline data for wildlife populations are important to track trends of these populations over time and to identify threats to their long-term persistence. Aims We aimed to assess the status and distribution of the little studied megapode (Megapodius laperouse laperouse) across the Mariana Islands. Methods Using passive and call playback facilitated surveys in 2008...
Authors
Paul Radley, Richard Camp, Frederick A Amidon, Ann Marshall, P. Marcos Gorresen, Curt T. Kessler
Distribution and trends of endemic Hawaiian waterbirds, 1986–2023 Distribution and trends of endemic Hawaiian waterbirds, 1986–2023
This study updates the status assessment of four endemic endangered Hawaiian waterbird species—ae‘o (Hawaiian stilt, Himantopus mexicanus knudseni), ‘alae ke‘oke‘o (Hawaiian coot, Fulica alai), ‘alae ‘ula (Hawaiian gallinule, Gallinula galeata sandvicensis), and koloa maoli (Hawaiian duck, Anas wyvilliana)—from 1986 to 2016 by incorporating new data from 2017–2023. State-space models...
Authors
P. Marcos Gorresen, Richard Camp, Eben Paxton
Factors affecting the density of Metabetaeus lohena (Decapoda: Alpheidae) at a high-density anchialine pool environment on the Kona Coast of the Island of Hawai‘i Factors affecting the density of Metabetaeus lohena (Decapoda: Alpheidae) at a high-density anchialine pool environment on the Kona Coast of the Island of Hawai‘i
Caridean shrimps (Caridea) are the dominant macroinvertebrates in most anchialine ecosystems. Hawaiian anchialine ecosystems, primarily composed of shallow surface pools connected to the ocean via hypogeal networks of cracks, tubes, and other voids, support 10 caridean shrimp species, including two federally listed as endangered. Little is known about most of these species. The objective...
Authors
Robert W. Peck, Sarah Nash, Richard Camp
Nihoa and Laysan Island passerines population abundances, trends, and habitat utilization Nihoa and Laysan Island passerines population abundances, trends, and habitat utilization
Nihoa and Laysan Island, part of the Northwestern Hawaiian Islands, are host to three endangered passerine species—Nihoa finch (Telespiza ultima), Nihoa millerbird (Acrocephalus familiaris kingi), and Laysan finch (Telespiza cantans). Using point-transect distance sampling survey records from 2010 to 2022 for Nihoa and 2013 to 2019 for Laysan Island, we estimated the density and...
Authors
Trevor Bak, Richard Camp, Chris Farmer, Rachel Rounds, Sheldon M. Plentovich, John Vetter, Paul Banko
Divergent trends in distribution and abundance of landbirds in low and high elevation habitats of the Kaʻū Rainforest Divergent trends in distribution and abundance of landbirds in low and high elevation habitats of the Kaʻū Rainforest
Federal, state, and non-governmental partners resurveyed landbirds in the Kaʻū Rainforest on the Island of Hawai‘i in 2019. Point-transect distance sampling was conducted in Hawaiʻi Volcanoes National Park, Kaʻū Forest Reserve, Kapāpala Forest Reserve, and Kapāpala Cooperative Game Management Area. This is the first comprehensive survey of the region since 2008. Through a collaborative...
Authors
Seth Judge, Kevin W. Brinck, Ayesha Genz, Lainie Berry, Jacqueline Gaudioso-Levita, Alexander Wang, Richard Camp
Evaluation of data collected by Guam Division of Aquatic and Wildlife Resources during population establishment and monitoring of ko'ko' (Hypotaenidia owstoni) on Rota, Commonwealth of the Northern Mariana Islands, and wildlife monitoring datasets on Coco Evaluation of data collected by Guam Division of Aquatic and Wildlife Resources during population establishment and monitoring of ko'ko' (Hypotaenidia owstoni) on Rota, Commonwealth of the Northern Mariana Islands, and wildlife monitoring datasets on Coco
Efforts to recover the critically endangered ko’ko’ (Guam rail, Hypotaenidia owstoni) through establishing an experimental population on the island of Rota in the Commonwealth of the Northern Mariana Islands have been ongoing for three decades. The U.S. Geological Survey collaborated with the Guam Division of Aquatic and Wildlife Resources and the Government of Guam to evaluate whether...
Authors
Richard Camp, Sarah Nash, Kristina Paxton
Environmental and geographical factors influence the occurrence and abundance of the southern house mosquito, Culex quinquefasciatus, in Hawai‘i Environmental and geographical factors influence the occurrence and abundance of the southern house mosquito, Culex quinquefasciatus, in Hawai‘i
Hawaiian honeycreepers, a group of endemic Hawaiian forest birds, are being threatened by avian malaria, a non-native disease that is driving honeycreepers populations to extinction. Avian malaria is caused by the parasite Plasmodium relictum, which is transmitted by the invasive mosquito Culex quinquefasciatus. Environmental and geographical factors play an important role in shaping...
Authors
Oswaldo Villena, Katherine McClure, Richard Camp, Dennis Lapointe, Carter T. Atkinson, Helen Sofaer, Lucas Fortini
A global ecological signal of extinction risk in marine ray-finned fishes (class Actinopterygii) A global ecological signal of extinction risk in marine ray-finned fishes (class Actinopterygii)
Many marine fish species are experiencing population declines, but their extinction risk profiles are largely understudied in comparison to their terrestrial vertebrate counterparts. Selective extinction of marine fish species may result in rapid alteration of the structure and function of ocean ecosystems. In this study, we compiled an ecological trait dataset for 8,185 species of...
Authors
Trevor Bak, Richard Camp, Noel Heim, Douglas J. McCauley, Jonathan Payne, Matthew Knope