Estimation of density and population size and recommendations for monitoring trends of Bahama parrots on Great Abaco and Great Inagua
2005; Wiley; Volume: 33; Issue: 3 Linguagem: Inglês
10.2193/0091-7648(2005)33[823
ISSN1938-5463
AutoresFrank F. Rivera‐Milán, Jaime A. Collazo, Caroline Stahala, Wendy J. Moore, Ancilleno Davis, Garth Herring, Melanie J. Steinkamp, Ron Pagliaro, Jennifer L. Thompson, Woody Bracey,
Tópico(s)Wildlife Ecology and Conservation
ResumoWildlife Society BulletinVolume 33, Issue 3 p. 823-834 Estimation of density and population size and recommendations for monitoring trends of Bahama parrots on Great Abaco and Great Inagua Frank F. Rivera-Milán, Corresponding Author Frank F. Rivera-Milán Frank F. Rivera-Milán (above right) is an ecologist and international affairs specialist at the Division of International Conservation, United States Fish and Wildlife Service. He has a B.S. in biology from Sacred Heart University at Puerto Rico, M.S. in environmental sciences from Southern Illinois University at Edwardsville, and Ph.D. in marine and estuarine environmental sciences from University of Maryland at College Park. Frank's interests include population ecology, ecological modeling, and the application of methods in ecology and statistics to wildlife management. In his current position, he is involved in capacity building and coordinates wildlife management and conservation projects throughout Latin America and the Caribbean. United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorJaime A. Collazo, Corresponding Author Jaime A. Collazo Jaime A. Collazo (far left) is an ecologist with the North Carolina Cooperative Research Unit of the Biological Resources Division of the United States Geological Survey. He has a B.S. in biology from the University of Puerto Rico, M.S. in zoology from the University of Idaho, and a Ph.D. in animal ecology from Iowa State University. Jaime's interests include population dynamics and species-habitat relationships of resident and migratory species, and endangered species conservation. United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorCaroline Stahala, Corresponding Author Caroline Stahala Carolina Stahala (above center) is a graduate student at North Carolina State University interested in the ecology of endangered species. She has spent extended amounts of time conducting research of Bahama parrots and plans to stay involved in its conservation. United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorWendy J. Moore, Corresponding Author Wendy J. Moore United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorAncilleno Davis, Corresponding Author Ancilleno Davis United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorGarth Herring, Corresponding Author Garth Herring United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorMelanie Steinkamp, Corresponding Author Melanie Steinkamp United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorRon Pagliaro, Corresponding Author Ron Pagliaro United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorJennifer L. Thompson, Corresponding Author Jennifer L. Thompson United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorWoody Bracey, Corresponding Author Woody Bracey United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this author Frank F. Rivera-Milán, Corresponding Author Frank F. Rivera-Milán Frank F. Rivera-Milán (above right) is an ecologist and international affairs specialist at the Division of International Conservation, United States Fish and Wildlife Service. He has a B.S. in biology from Sacred Heart University at Puerto Rico, M.S. in environmental sciences from Southern Illinois University at Edwardsville, and Ph.D. in marine and estuarine environmental sciences from University of Maryland at College Park. Frank's interests include population ecology, ecological modeling, and the application of methods in ecology and statistics to wildlife management. In his current position, he is involved in capacity building and coordinates wildlife management and conservation projects throughout Latin America and the Caribbean. United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorJaime A. Collazo, Corresponding Author Jaime A. Collazo Jaime A. Collazo (far left) is an ecologist with the North Carolina Cooperative Research Unit of the Biological Resources Division of the United States Geological Survey. He has a B.S. in biology from the University of Puerto Rico, M.S. in zoology from the University of Idaho, and a Ph.D. in animal ecology from Iowa State University. Jaime's interests include population dynamics and species-habitat relationships of resident and migratory species, and endangered species conservation. United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorCaroline Stahala, Corresponding Author Caroline Stahala Carolina Stahala (above center) is a graduate student at North Carolina State University interested in the ecology of endangered species. She has spent extended amounts of time conducting research of Bahama parrots and plans to stay involved in its conservation. United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorWendy J. Moore, Corresponding Author Wendy J. Moore United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorAncilleno Davis, Corresponding Author Ancilleno Davis United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorGarth Herring, Corresponding Author Garth Herring United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorMelanie Steinkamp, Corresponding Author Melanie Steinkamp United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorRon Pagliaro, Corresponding Author Ron Pagliaro United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorJennifer L. Thompson, Corresponding Author Jennifer L. Thompson United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this authorWoody Bracey, Corresponding Author Woody Bracey United States Fish and Wildlife Service, Division of International Conservation, 4401 North Fair-fax Drive, Room 730-ARLSQ, Arlington, VA 22203, USA; e-mail: [email protected] United States Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695, USA. Friends of the Environment, Hope Town, Abaco, Bahamas. Florida Atlantic University, Biological Sciences, 777 Glades Road, Boca Raton, FL 33431, USA. Patuxent Wildlife Research Center, Atlantic Coast Joint Venture, 11510 American Holly Drive, Merriam Lab, Room 206B, Laurel, MD 20708, USA.Search for more papers by this author First published: 13 December 2010 https://doi.org/10.2193/0091-7648(2005)33[823:EODAPS]2.0.CO;2Citations: 11 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Once abundant and widely distributed, the Bahama parrot (Amazona leucocephala bahamensis) currently inhabits only the Great Abaco and Great Inagua Islands of the Bahamas. In January 2003 and May 2002–2004, we conducted point-transect surveys (a type of distance sampling) to estimate density and population size and make recommendations for monitoring trends. Density ranged from 0.061 (SE = 0.013) to 0.085 (SE = 0.018) parrots/ha and population size ranged from 1,600 (SE = 354) to 2,386 (SE = 508) parrots when extrapolated to the 26,154 ha and 28,162 ha covered by surveys on Abaco in May 2002 and 2003, respectively. Density was 0.183 (SE = 0.049) and 0.153 (SE = 0.042) parrots/ha and population size was 5,344 (SE = 1,431) and 4,450 (SE = 1,435) parrots when extrapolated to the 29,174 ha covered by surveys on Inagua in May 2003 and 2004, respectively. Because parrot distribution was clumped, we would need to survey 213–882 points on Abaco and 258-1,659 points on Inagua to obtain a CV of 10–20% for estimated density. Cluster size and its variability and clumping increased in wintertime, making surveys imprecise and cost-ineffective. 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