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4 Acta Chiropterologica

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Book Reviews: The mammals of Luzon Island: biogeography and natural history of a Philippine fauna

100%

Sedlock J. L.

Acta Chiropterologica

2016

tom 18

nr 2

Inventory of insectivorous bats on Mount Makiling, Philippines using echolocation call signatures and a new tunnel trap

100%

Sedlock J. L.

tom 03

nr 2

The call signatures of sixteen Philippine insectivorous bat species are described, and used to inventory bats on Mount Makiling, Luzon. I compare these acoustic diversity data to those collected with mist nets, and a newly designed tunnel trap. The Rhinolophidae used calls with unique constant frequency components. Most vespertilionid calls could be identified to species based on call shape and minimum frequency, with the exception of those used by Pipistrellus spp. and Miniopterus schreibersii. The tunnel trap, mist nets, and the Anabat II detector recorded 22 species, including eight new records for Mount Makiling. Eighteen percent of the species were captured in mist nets, 68% were trapped, and 77% were detected acoustically. Twenty species were recorded either acoustically or with the trap. Two species were recorded exclusively with mist-nets, three with the tunnel trap, and four were only detected with the bat detector. Generally, bats possessing low intensity calls were not detected acoustically or captured in mist nets, but were captured in the tunnel trap. The tunnel trap captured most species flying below the canopy and the bat detector was effective for inventorying those flying above.

A survey of bats in a karst landscape in the central Philippines

45%

Sedlock J. L. , Jose R. P. , Vogt J. M. , Paguntalan L. M. J. , Carino A. B.

Acta Chiropterologica

2014

tom 16

nr 1

Karst landscapes are biologically diverse and unique ecosystems that are especially important to bats. As in other parts of Southeast Asia, cave roosting bats in the Philippines have suffered extensive human disturbance, and as a result, may be declining. Here we contributed to a region-wide effort to assess the status of cave bats by surveying bats in well-known caves and forest on limestone on Bohol Island in the central Philippines. We also assessed cave disturbance through physical signs and interviews. We observed and acoustically detected bats representing a total of 14 taxa in 23 of the 25 caves surveyed. Few species were present in most caves (median = 2 spp.) and only three caves had large numbers of bats (> 1,000). However, of the 29 bat species captured in forest, 19 are known to roost in caves, including the poorly known Philippine endemic, Hipposideros coronatus. Most surveyed caves experienced either current or historical human disturbance (88%), primarily by collectors of edible bird's nests, bats for food, and guano for use as fertilizer in rice fields. High species richness, signs of population decline, and high human disturbance all point to Bohol Island as an important conservation area for cave-roosting bats in the Philippines.

Bat diversity in tropical forest and agro-pastoral habitats within a protected area in the Philippines

38%

Sedlock J. L. , Weyandt S. E. , Cororan L. , Damerow M. , Hwa S.-H. , Pauli B.

Acta Chiropterologica

2008

tom 10

nr 2

Parks and other protected areas in tropical forests often include secondary forest, cropland, and pasture. Documentation of the impact of such anthropogenic disturbance is essential for effective management. We re-sampled bats within Mount Isarog Natural Park (MINP), a protected area in southeastern Luzon, Philippines, seventeen years after a survey in old- and second-growth forest and in agro-pastoral areas was conducted in 1988. By employing harp traps and a tunnel trap, in addition to mist nets as used in the earlier study, we aimed to document species previously undetected by mist netting alone. We documented 26 bat species, seven of which were captured exclusively in harp traps, and two that were only captured in a tunnel trap. This survey resulted in nine new records of bat species for MINP, bringing the total number to 30. We did not recapture four species documented in 1988, all of which were noted in that study as uncommon. Nineteen species were captured in agro-pastoral areas on the south slope, including two Hipposideros spp. not captured at the forested sites.