Please use this identifier to cite or link to this item: http://hdl.handle.net/10790/2761

Acoustic surveys of Hawaiian hoary bats in Kahikinui Forest Reserve and Nakula Natural Area Reserve on the island of Maui

File SizeFormat 
Bonaccorso_Kahikinui71116.pdf1.37 MBAdobe PDFView/Open

Item Summary

Title: Acoustic surveys of Hawaiian hoary bats in Kahikinui Forest Reserve and Nakula Natural Area Reserve on the island of Maui
Authors: Todd, Christopher M.
Pinzari, Corinna A.
Bonaccorso, Frank J.
Keywords: Shrublands
Forests and forestry
Xeric ecology
ecolocation
detection probability
Issue Date: 08 Jul 2016
Series/Report no.: TR-HCSU;078
Abstract: The Kahikinui Forest Reserve and the adjoining Nakula Natural Area Reserve (KFR-NNAR) was established in 2011 as a conservation area on the leeward slope of Haleakalā Volcano on the island of Maui to protect unique natural features and endangered species including the Hawaiian hoary bat, Lasiurus cinereus semotus. We recorded bat vocalizations from July 2012 to November 2014 using automated echolocation detectors at 14 point locations in the KFR-NNAR. Our study area included remnants of recovering mesic montane forest with interspersed grasses (1,250‒1,850 m elevation, hereafter called “forest”) and xeric subalpine shrubland plant communities (1,860‒2,800 m, hereafter called “shrubland”). Monthly detections of Hawaiian hoary bats, Lasiurus cinereus semotus, within the KFR-NNAR identified areas of high and low detection probability as well as foraging activity. Sixty per cent of all detector-nights had confirmed bat vocalizations and included detections in every month of the study. Monthly detection probability values were highest from July to November 2012; these values were significantly greater than values measured in any month thereafter. Pooled values of detection probabilities, mean pulses/night, percentage of nights with feeding activity, and acoustic detections all were greater in the recovering forest zone than corresponding values from the shrublands. Our data provide baseline levels of hoary bat echolocation activity that may be compared with future studies in the KFR-NNAR relative to success criteria for Hawaiian hoary bat habitat restoration.
Pages/Duration: 26
URI/DOI: http://hdl.handle.net/10790/2761
Appears in Collections:Hawaii Cooperative Studies Unit (HCSU)



This item is licensed under a Creative Commons License Creative Commons