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Bioacoustics papers from CSIRO journals (Dec08)

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Subject: Bioacoustics papers from CSIRO journals (Dec08)
From: "Matthew Stanton" <>
Date: Wed, 14 Jan 2009 10:10:05 +1100
Observation and recording of a vocalisation by the Common Planigale
(Planigale maculata) (Gould 1851) in Northern NSW.

PD Meek and R Peak

Several, not fully mobile, ,juvenile Planigale maculata, a small
terrestrial marsupial, were observed calling from exposed positions near
to where they had emerged from their nests. This is the first record of
an audible vocalization of the planigale. An oscillogram of their call
is presented. At the same time several tawny frogmouth (Podargus
stringoides)(sic) were calling from surrounding trees. Many P.
stringoides (sic) were observed picking off the P. maculata from the
tree trunks throughout the night.

Australian Mammalogy 30(2) 91 - 94
Full text doi:10.1071/AM08012

A comparison of the effectiveness of bat detectors and harp traps for
surveying bats in an urban landscape

C. L. Hourigan A , C , Carla P. Catterall A , Darryl Jones A and Martin
Rhodes B
A Centre for Innovative Conservation Strategies, Griffith University,
Nathan, Qld 4111, Australia.
B University of Queensland, St Lucia, Qld 4067, Australia.
C Corresponding author. Email: 

Obtaining adequate information for informed conservation-management
decisions requires effective and cost-efficient survey techniques. We
compared the effectiveness of bat detectors and harp traps for surveying
bat assemblages within an urban landscape in Brisbane, Australia, with
respect to number and composition of species. Nine sites within each of
three habitat types (remnant bushland, parkland, and low-density
residential - a total of 27 sites) were sampled twice each. The bat
detectors recorded 3628 calls, from which 13 taxa were identified. The
harp traps captured 17 individuals, from which five taxa were
identified. All species captured by harp trap were also detected by bat
detector, with the possible exception of N. bifax. Bat detectors
recorded significantly more species per site than were captured by harp
traps, both overall and within each of the three habitat types. And
although a considerable amount of time and expense was required to
identify the recorded echolocation calls to species, bat detectors were
also the most cost-efficient sampling method. These results collectively
show that bat detectors were the most effective and cost-efficient
method for surveying the bat assemblage in this urban landscape.

Wildlife Research 35(8) 768-774
Submitted: 28 September 2007    Accepted: 12 August 2008    Published:
16 December 2008
Full text DOI: 10.1071/WR07154

Geographic variation in the advertisement call of Crinia signifera
(Anura : Myobatrachidae) on Kangaroo Island and across southern
south-eastern Australia

Murray J. Littlejohn
Department of Zoology, University of Melbourne, Parkville, Vic. 3010,
Australia. Email: 

The male advertisement call of anuran amphibians has a major role in
mate choice, and regional variation in this attribute can act as an
indicator of speciation and a marker for genetic differentiation. As
part of a regional study of geographic variation in the male
advertisement call of Crinia signifera across south-eastern Australia
and adjacent larger continental islands, samples of advertisement calls
from two populations on Kangaroo Island and two populations on the
adjacent Fleurieu Peninsula were compared. Four call attributes were
considered: pulse number, call duration, pulse rate and dominant
frequency. Pulse number is considered the most reliable for comparative
purposes because it is not influenced by effective temperature or audio
recording and analysis. The two island populations (central and eastern,
~24 km apart) differ significantly in pulse number, with contact but no
overlap of interquartile ranges. The eastern sample differs markedly
from those on the nearby Fleurieu Peninsula - which are both similar to
the more distant central island sample. Geographic variation in pulse
number in these four samples and 11 others from two recent publications
is then interpreted in the light of land bridges and lower temperatures
of the late Pleistocene and early Holocene.

Australian Journal of Zoology 56(4) 223-232
Submitted: 19 September 2008    Accepted: 1 October 2008    Published:
22 December 2008
Full text DOI: 10.1071/ZO08018

(c) CSIRO 2008

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