Report Number: 30792
Reporting
Year: 2004
Permit Number: CRLA-2004-SCI-0007
Current Status: Checked in
Date Received: Mar 09, 2005
Principal Investigator:
Mr Andrew Duff,
Klamath Network Inventory and Monitoring
Program,
Ashland, OR
Additional investigator(s):
Daniel Sarr
(providing funding)
Park-assigned Study Id. # CRLA-04024
Permit Expiration
Date:
Dec 28, 2005
Permit Start Date:
Aug 01, 2004
Study Starting
Date:
Aug 01, 2004
Study Ending Date:
Jun 28, 2006
Study
Status:
Continuing
Activity Type:
Inventory
Subject/Discipline:
Mammals
Objectives:
This project will use bat presence-absence
and relative abundance data to predict bat
species distribution and abundance in the
Klamath network. Bats will be monitored at
CRLA, REDW, and ORCA. Presence of bat
species will be determined by live trapping
using mist nets and harp traps and by
acoustic sampling. Species-specific models
will be based on climatic, vegetation, and
landscape features derived from GIS
databases. This study will directly address
ecological questions relevant to bat
conservation within the Klamath network by
evaluating species distributions with
respect to biotic and abiotic landscape
scale patterns. This will enable land
managers to better understand how current
land use practices and other landscape
features (e.g., climate, elevation,
vegetation) influence regional bat
populations in the network.
Findings and Status:
Mist nets and harp traps were used to
capture bats at 8 locations during 11 nights
of trapping (1,798.2 m2 net hours of netting
effort) between 8 and 26 August 2004 in
Crater Lake National Park (CRLA). I captured
47 bats representing 5 species in mist nets.
Three species represented 76.3% of our mist
net captures. Long-legged myotis (Myotis
volans) was our most frequently captured bat
(27.7%) although the species was only
captured at 2 sites. Little-brown myotis (M.
lucifugus) (27.3%) and long-eared myotis (M.
evotis) (21.3%) were the second and third
most frequently captured bat at CRLA. The
remaining 23.7% of our captures consisted of
Yuma myotis (M. yumanensis) (14.9%) and
silver-haired bats (Lasionycteris
noctivagans) (10.6%). At CRLA, 93.9% of our
captures were males. Females were captured
on Sun Creek near Vidae falls and at Annie
spring. I was unsuccessful at capturing bats
at 4 sites. echolocating bats at mist
netting locations. AnaBat was also used at 6
sites in each park where live capture
techniques were not employed. This
facilitated documenting bat presence and
activity in areas where mist netting was
logistically impossible and it also provides
data throughout the night. Overall at CRLA,
I recorded 1,240 AnaBat II sequence files.
For
this study, were one or more specimens collected and
removed from the park but not destroyed during
analyses?
No
Funding provided
this reporting year by NPS:
15000
Funding provided
this reporting year by other sources:
0
Full name of
college or university:
n/a
Annual funding
provided by NPS to university or college this
reporting year: 0
