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| Pacific Island Ecosystems Research Center |
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| Hawaii Forest Birds Interagency Database Project Pacific Island Ecosystems Research Center, USGS Principle Investigators: Bethany L. Woodworth and Thane K. Pratt Project Coordinator and Analyst: Richard J. Camp GIS and Modeling Specialist: P. Marcos Gorresen Cooperators: Gap Analysis Program - Hawaii; State of Hawaii - Division of Forestry and Wildlife; Kamehameha Schools; Natural Heritage Program - Hawaii; Pacific Cooperative Studies Unit - University of Hawaii; The Nature Conservancy - Hawaii; U.S. Fish and Wildlife Service; U.S. Forest Service; U.S. National Park Service; Pacific Basin Information Node - U.S. Geological Survey; and Pacific Island Ecosystems Research Center of Biological Resources Division - U.S. Geological Survey. |
| In 1976-1981, the U.S. Fish and Wildlife Service (now BRD) conducted systematic surveys of forest birds and plant communities on all of the main Hawaiian Islands as part of the Hawaii Forest Bird Surveys (HFBS; Scott, J.M., S. Mountainspring, F.L. Ramsey, and C.B. Kepler. 1986. Forest bird communities of the Hawaiian Islands: their dynamics, ecology, and conservation. Studies in Avian Biology 9:1-431). Results of this monumental effort have guided conservation efforts and provided the basis for many plant and bird recovery plans and land acquisition decisions in Hawaii during the past two decades. Unfortunately, these estimates and range maps are now seriously outdated, hindering modern conservation decision-making efforts and recovery plan development. Information on status and trends of forest bird populations in Hawaii is critical to wise management and conservation of these resources. |
| Sampling uses variable circular plot methods, a form of distance sampling, to estimate abundance of birds in a given area based on a detection probability. Distances are estimated from the center of a sampling station to birds detected. The measures of distances are modeled to calculate a species specific detection function and subsequently estimate bird density and density. More than 400 surveys of forest birds have been conducted in Hawaii since the HFBS by a variety of organizations, including the National Park Service, U. S. Fish and Wildlife Service, U.S. Forest Service, Hawaii Department of Land and Natural Resources, Kamehameha Schools, University of Hawaii, The Nature Conservancy, and private consultants. Prior to the initiation of the present project, these surveys were scattered among many different individuals and agencies, and most had never been entered into a computer, analyzed or reported. These survey data represent a phenomenal informational resource which has not previously been widely available. |  |
| The Hawaii Forest Bird Interagency Database Project (HFBIDP) has as its goal to make these data useable and accessible by creating a centralized, standardized database of all forest bird surveys collected since the HFBS; developing current population size estimates, species-habitat models, and distribution maps for all native and exotic birds in Hawaii; examining population trends in species of concern; and presenting these results on a webpage which will make them available to cooperators throughout Hawaii. |
| Since October 1999, the HFBIDP has gathered, compiled, proofed, and standardized data from all forest bird surveys conducted throughout Hawaii over the past quarter century. The database now contains over 800,000 bird records from more than 400 surveys conducted throughout the main Hawaiian Island over the last quarter century. Data analysis, species-habitat modeling, and trend detection analysis are now in progress. Once analyzed, the data will elucidate trends in distribution and density of species of concern, allow us to test hypotheses for the causes of decline and examine the results of management actions, and guide future survey effort, conservation planning and decision-making. |
| This endeavor would not be possible without the help of the many individuals and organizations that generously contributed with advice, data, financial and in-kind support. We thank Paul Banko, Kevin Brinck, Steve Buckland, Ken Burnham, Jeff Duda, Steve Fancy, Jeff Hatfield, Jim Jacobi, Luanne Johnson, Jim Nichols, Michelle Reynolds, Len Thomas, and Mark Wotowa for advise and critique of database development and statistical analyses. We thank the immense contribution of project interns for entering and proofing data, and assistance in all other aspects of the project: Chris Collins, Ashley Cramer, Clarence Dobgima, Debbie Gillmor, Heather Howitt, Taryn Jarvis, Natalie Kromrey, Leslie McLees, Jason Rogers, Ian Rose, and Kristin Wilson. We thank the support of Hawaii Volcanoes National Park, Haleakala National Park, Hakalau Forest National Wildlife Refuge, Kona Forest National Wildlife Refuge, Ecological Services - USFWS, State of Hawaii - Division of Forestry and Wildlife, Kamehameha Schools, Hawaii Gap Analysis Project, Pacific Cooperative Studies Unit - University of Hawaii, Pacific Basin Information Node - USGS, and Pacific Island Ecosystems Research Center - USGS. |
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| This page maintained by: Hawaii Forest Bird Interagency Database Project Kilauea Field Station Building 344, PO Box 44 Hawaii National Park, HI 96818 Phone: (808) 967-7396 ext 252 |
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