Filters: Tags: echolocation (X)
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Anabat II detector mounted on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees.   Detector was one component of a study to evaluate bat use of remnant trees within vineyards. This detector was placed in the middle of a nearby savannah, far from any tree.
Anabat II detector mounted on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees.   Detector was one component of a study to evaluate bat use of remnant trees within vineyards. This detector was placed in a nearby savannah just outside the canopy of a large oak tree.
We examined Hawaiian hoary bat (Lasiurus semotus) presence and foraging activity at Hakalau Forest National Wildlife Refuge and Lāupahoehoe Forest Reserve on Hawai‘i Island during the 2013 koa moth (Geometridea: Scotorythra paludicola) outbreak. Hawaiian hoary bat echolocation vocalizations were recorded at seven acoustic stations between 1069 and 1200 m above sea level that operated nightly from May 2013 through September 2013. We compared these data to data collected at similar locations during 2007-2011 to determine the response of bats to increased moth abundance during 2013. In this abstract we refer to the Hawaiian hoary bat as a full species, Lasiurus semotus, following updated taxonomy for Hawaiian hoary...
Anabat II detector mounted on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees. The detector was placed between a small grove of trees and pond behind Dows Prairie Elementary School. The objective of this detector was to determine species presence and activity levels throughout the year and to correlate them with weather variables from the ACV airport and compare to a similarly situated detector in Arcata.
Detector placed by the San Lorenzo River along the Big Trees patch of old-growth in Henry Cowell State Park. The purpose of the detector was to measure passage of migratory tree bats during Fall 2012 and to provide some initial insights into use of old-growth vs 2nd growth habitat. The detector was part of a larger effort to understand the use of Coast Redwood throughout NW California by migratory bats.
Anabat II detector with microphone on 1.5 m pole oriented straight down toward a reflector plate angled at 45 degrees. The detector was placed near the edge of a patch of conifers and directed toward the surrounding coastal grassland and abandoned nursery lands. The objective of this detector was simply to characterize species composition and activity levels throughout the year.
Hawaiian hoary bat vocalization and visual detection records collected on Hawaii Island, Hawaii, September-October 2014. Bat echolocation was monitored with ultrasonic detectors and bat occurrence and behavior was monitored using thermal surveillance cameras.
Categories: Data;
Tags: Hawaii,
acoustic sampling,
detection rates,
echolocation,
thermal videography,
Hawaiian hoary bat insect prey sampling with paired acoustic monitoring was conducted at Keaukaha Military Reservation (KMR) on Hawai‘i Island from May to August, 2018. At this property, a herd of domestic goats (occasionally mixed with domestic sheep) were rotated among grazing plots as part of a weed control program managed by Hawaii Army National Guard (HIARNG). Song Meter SM2BAT+ ultrasonic detectors (Wildlife Acoustics, Maynard, MA) with SMX-US ultrasonic microphones (Wildlife Acoustics, Maynard, MA) were deployed at a total of six stations, five monitoring stations (4E, 5F-I) and an additional reference station was established in an ungrazed area with similar non-native grassland habitat approximately 800-m...
Anabat II detector mounted on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees. The detector was placed on the edge of cow pasture along a dense patch of riparian vegetation along North Jacoby Creek, near Arcata, Califoria. The objective of this detector was to determine species presence and activity levels throughout the year and to correlate them with weather variables from the Eureka Woodley Island weather station and compare to a similarly situated detector in McKinleyville, CA.
Anabat II detector mounted on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees. The detector was placed between a small grove of trees and pond behind Dows Prairie Elementary School. The objective of this detector was to determine species presence and activity levels throughout the year and to correlate them with weather variables from the ACV airport and compare to a similarly situated detector in Arcata.
In this study, we present a methodology that identifies acoustic units in Gunnison's prairie dog alarm calls and then uses those units to classify the alarm calls and bouts according to the species of predator that was present when the calls were vocalized. While traditional methods measure specific acoustic parameters in order to describe a vocalization, our method uses the variation in the internal structure of a vocalization to define possible information structures. Using a simple representation similar to that used in human speech to identify vowel sounds, a software system was developed that uses this representation to recognize acoustic units in prairie dog alarm calls. These acoustic units are then used...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Behavioural Processes,
acoustics,
animal,
animals,
auditory perception,
This study investigated local distribution and foraging behavior of the spotted bat (Euderma maculatum) in Dinosaur National Monument, Colorado-Utah, by monitoring audible echolocation calls. The occurrence of this species was verified in a variety of habitat types in canyon bottoms and other relatively low elevation sites, indicating that the animals were widely distributed and locally common in the area. Foraging spotted bats concentrated flight activity in the open-air space above meadows occasionally exploited near-canopy habitat (within 8 m of foliage). Bats began to forage shortly after dark, and activity levels were relatively constant throughout the night. Foraging spotted bats attacked airborne prey every...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Colorado,
Dinosaur,
Euderma maculatum,
National Monument,
Utah,
Bats play crucial ecological roles and provide valuable ecosystem services, yet many populations face serious threats from various ecological disturbances. The North American Bat Monitoring Program (NABat) aims to assess status and trends of bat populations while developing innovative and community-driven conservation solutions using its unique data and technology infrastructure. To support scalability and transparency in the NABat acoustic data pipeline, we developed a fully-automated machine-learning algorithm. This dataset includes audio files of bat echolocation calls that were considered to develop V1.0 of the NABat machine-learning algorithm, however the test set (i.e., holdout dataset) has been excluded from...
Categories: Data;
Tags: North America,
USGS Science Data Catalog (SDC),
Wildlife Biology,
Wildlife Disease,
bats,
Hawaiian hoary bats (Lasiurus cinereus semotus) were captured at multiple locations on the east side of Hawaii Island from May 2018 through September 2019. Radio transmitters were affixed to captured bats and, when possible, radio telemetry was used to locate bats in trees used for day-roosts. In 2019, three maternity roosts were identified however only two were suitable for acoustic recording. Acoustic detectors were used to record acoustic activity (i.e., echolocation pulses) at two maternity roosts. Song Meter SM4BAT FS ultrasonic recorders (Wildlife Acoustics, Maynard, MA) with SMX-US ultrasonic microphones (Wildlife Acoustics, Maynard, MA) were deployed within 5-m of each maternity roost tree and configured...
We examined Hawaiian hoary bat (Lasiurus semotus) presence and foraging activity at Hakalau Forest National Wildlife Refuge and Lāupahoehoe Forest Reserve on Hawai‘i Island during the 2013 koa moth (Geometridea: Scotorythra paludicola) outbreak. Hawaiian hoary bat echolocation vocalizations were recorded at seven acoustic stations between 1069 and 1200 m above sea level, that operated nightly from May 2013 through September 2013. We compared these data to data collected at similar locations in 2011 to determine the response of bats to increased moth abundance during 2013. In this abstract we refer to the Hawaiian hoary bat as a full species, Lasiurus semotus, following updated taxonomy for Hawaiian hoary bats (Pinzari...
We examined Hawaiian hoary bat (Lasiurus semotus) presence and foraging activity at Hakalau Forest National Wildlife Refuge and Lāupahoehoe Forest Reserve on Hawai‘i Island during the 2013 koa moth (Geometridea: Scotorythra paludicola) outbreak. Hawaiian hoary bat echolocation vocalizations were recorded at seven acoustic stations between 1069 and 1200 m above sea level, that operated nightly from May 2013 through September 2013. We compared these data to data collected at similar locations in 2011 to determine the response of bats to increased moth abundance during 2013. This data set includes data derived from these acoustic recording stations. Each acoustic recording station was comprised of an acoustic recording...
Anabat II detector mounted on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees. The detector was placed on the edge of cow pasture along a dense patch of riparian vegetation along North Jacoby Creek, near Arcata, Califoria. The objective of this detector was to determine species presence and activity levels throughout the year and to correlate them with weather variables from the Eureka Woodley Island weather station and compare to a similarly situated detector in McKinleyville, CA.
Anabat II detector with microphone on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees. The detector was placed right along Bull Creek in fairly, dry (in the fall) open habitat. The objective of this station was to characterize activity levels and changes in them over the fall season... especially for migratory tree bats.
Anabat II detector mounted on a 3m pole oriented straight down toward a reflector plate angled at 45 degrees. The detector was placed on the edge of cow pasture along a dense patch of riparian vegetation along North Jacoby Creek, near Arcata, Califoria. The objective of this detector was to determine species presence and activity levels throughout the year and to correlate them with weather variables from the Eureka Woodley Island weather station and compare to a similarly situated detector in McKinleyville, CA.
Acoustic sampling for presence of the endangered Hawaiian hoary bat (Lasiurus semotus, also known as Aeorestes semotus) was conducted at 17 stations across four Marine Corps Base Hawaii (MCBH) properties on O‘ahu Island, Hawai‘i. Bats were confirmed as present at all properties; MCBH Kāneʻohe Bay on Mōkapu Peninsula, Marine Corps Training Area Bellows (MCTAB) in Waimanalo, Camp H.M. Smith in Halawa Heights, and Pu'uloa Range Training Facility (RTF) on the 'Ewa coastal plain. Hawaiian hoary bats were recorded in airspace at all four properties during important periods of Hawaiian hoary bat life history, including periods of pregnancy, lactation, and pup fledging; however, overall presence was low. Foraging activity...
Categories: Data;
Tags: Hawaiian hoary bat,
O‘ahu,
USGS Science Data Catalog (SDC),
Wildlife Biology,
acoustic monitoring,
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