Current distribution and abundance of Kohala forest birds in Hawai'i

被引:2
作者
Burnett, Keith [1 ]
Camp, Richard J. [2 ]
Hart, Patrick J. [1 ]
机构
[1] Univ Hawaii Hilo, Dept Biol, Hilo, HI 96720 USA
[2] US Geol Survey, Pacific Isl Ecosyst Res Ctr, Hawaii Natl Pk, POB 44,Hawaii Natl Pk, Hilo, HI 96718 USA
关键词
community assemblages; density maps; distance sampling; Hawaii; Kohala volcano; population increases; HABITAT; CLIMATE;
D O I
10.1111/jofo.12386
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
The Kohala volcano is home to the most spatially isolated population of Hawaiian forest birds on Hawaii Island and contains one of the few native bird populations in the state that has not been monitored since the original Hawaii Forest Bird Survey (HFBS) in 1979. We surveyed 143 stations across 13 transects in Pu'u 'O 'Umi Natural Area Reserve on Kohala from February through April 2017 and compared our results to data from the 1979 HFBS conducted at 80 stations across three transects in the same location as our study site. We detected 2806 individuals of 15 species and measured relative abundance, relative occurrence, and density for seven species. We observed changes in species densities ranging from -8.4% (Hawaii `Elepaio, Chasiempis sandwichensis) to +714% (Tiwi, Drepanis coccinea). Equivalence testing showed meaningful increases in population densities for all but one species, the Hawaii Elepaio. The increases in population densities on Kohala are in stark contrast to the widespread declines in population densities of native species elsewhere in Hawaii. Relative occurrence was greater in 2017 than in 1979 for all species except Hawaii `Elepaios and House Finches (Haemorhous mexicanus), and relative abundance increased for all species except Hawaii `Elepaios, House Finches, and Melodious Laughing Thrushes (Garrulax canorus). We also documented the range expansion of Japanese Bush Warblers (Cettia diphone) in Kohala. Our results indicate that this spatially isolated avian community remains biologically diverse, and most population densities are increasing in the study area. Our results provide a framework for future surveys and a baseline for understanding possible changes in population and community dynamics as birds respond to climate change and avian disease on Kohala volcano.
引用
收藏
页码:377 / 387
页数:11
相关论文
共 47 条
[1]  
[Anonymous], 2004, ADV DISTANCE SAMPLIN
[2]  
[Anonymous], 2016, The IUCN Red List of Threatened Species 2016
[3]   Introduced Avian Diseases, Climate Change, and the Future of Hawaiian Honeycreepers [J].
Atkinson, Carter T. ;
LaPointe, Dennis A. .
JOURNAL OF AVIAN MEDICINE AND SURGERY, 2009, 23 (01) :53-63
[4]  
Banko Winston E., 2009, P25
[5]  
Birdlife International, 2020, IUCN RED LIST THREAT
[6]  
Buckland S.T., 2001, pi
[7]  
Buckland ST, 2015, METH STAT ECOL, P1, DOI 10.1007/978-3-319-19219-2
[8]  
Burnett K.R., 2021, Hawaii Island Kohala Mountain Complex forest bird survey, 2017, DOI 10.5066/P93Y0MS0
[9]  
Burnham K. P., 2002, MODEL SELECTION MULT, DOI DOI 10.1007/B97636
[10]  
Camp R.J., 2009, HCSUTR012