Inventory project as-delivered dataset

In 2022, an estimated 1.6 million people visited New River Gorge (NPS 2023b). To date, there are over 1,600 established rock climbs documented in the New River Gorge area (Mountain Project 2022, Williams 2019). As visitation has increased, NERI has become interested in documenting the presence of bat species and their habitat on and near the cliff face, rim, and base areas to support a park management plan. A total of 51 routes were selected to survey three times throughout the summer of 2022. Cliff line surveys included personnel on-rope rappelling down each selected cliff face to look for bats or bat sign and to collect data on the physical attributes and record habitat information. In addition, a simultaneous acoustic survey for bats was conducted at the base of each survey route. Although no bats or bat sign were documented, analysis of the acoustic data in concert with the environmental factors revealed that bats were detected at more highly climbed walls versus unclimbed walls, at least northern long-eared bats (Myotis septentrionalis) were more likely to be detected near less vegetated walls, and activity of eastern small-footed bats (Myotis leibii) was higher as the summer progressed. Bats that roost on rock walls use cracks and crevices, which are also an important feature for climbers. Opportunistic conversations with climbers revealed that bats are observed on the cliffs. Colorado State University has a Climbers for Bat Conservation group (CSU 2023) that could be a resource for engaging climbers in a citizen science campaign.

We examined ‘ōpe‘ape‘a, or Hawaiian hoary bat (Lasiurus semotus; Chiroptera: Vespertilionidae), acoustic activity and surveyed potential roost trees at the Ford Island Chief Petty Officer’s (CPO) Bungalows Neighborhood of Pearl Harbor National Memorial (PERL) on the island of O‘ahu. We established four acoustic monitoring stations (PERL1–PERL4) that operated nightly to survey for ‘ōpe‘ape‘a echolocation activity from June to December 2024. Tree physiognomy data were collected at 12 potential roost trees and included tree species, tree height, diameter at breast height (DBH), percent canopy cover, distance to nearest tree, elevation, and canopy geometry. We collected 357,802 acoustic files over 672 station-nights across the four acoustic monitoring stations. ‘Ōpe‘ape‘a echolocation activity was detected over a total of 26 (4%) station-nights and during each month of the survey period except June. Echolocation activity peaked in September and October 2024, which is during the post-lactation and fledging period. These results represent a baseline for assessing ‘ōpe‘ape‘a acoustic activity and potential roosting resources in PERL.

We examined acoustic activity of the endangered Hawaiian hoary bat ('ōpe'ape'a; Lasiurus semotus) at at Pearl Harbor National Memorial (PERL) located on Ford Island, O‘ahu, Hawaii. The study area was located at the Ford Island Chief Petty Officer's (CPO) Bungalows Neighborhood, which covers approximately 4 acres and includes five historic CPO bungalows. Bat echolocation vocalizations were recorded at four acoustic stations (PERL1 - PERL4) located between 20 and 25 m above sea level, that operated nightly from June 2024 through December 2024. At station PERL-1 a total of 176 nights were sampled acoustically with 'ōpe'ape'a activity detected on seven nights. A total of nine 'ōpe'ape'a echolocation call events, zero feeding buzzes, and zero occurrences of multiple bats were documented. At station PERL-2 a total of 173 nights were sampled acoustically with 'ōpe'ape'a activity detected on seven nights. A total of eight 'ōpe'ape'a echolocation call events, zero feeding buzzes, and zero occurrences of multiple bats were documented. At station PERL-3 a total of 148 nights were sampled acoustically with 'ōpe'ape'a activity detected on six nights. A total of six 'ōpe'ape'a echolocation call events, zero feeding buzzes, and zero occurrences of multiple bats were documented. And finally, at station PERL-4 a total of 164 nights were sampled acoustically with 'ōpe'ape'a activity detected on six nights. A total of seven 'ōpe'ape'a echolocation call events, zero feeding buzzes, and zero occurrences of multiple bats were documented.

This dataset is a backup of the data stored on NABat.org, for NABat stationary acoustic monitoring on national wildlife refuges in the Pacific Region for years 2016-2022. It was directly downloaded from NABat to update FWSpecies lists on refuges. Significant post-processing was required in order to verify data and locations, and correct errors. This post-processing resulted in an enhanced dataset specific for region 1 refuges.

Bat community data were collected in various watersheds in Olympic National Park. This data set contains records of acoustic detections, physical measurements, and reproductive attributes of the species of bats observed from 1998 to 2000. In addition to call detections and physical attributes, vegetation is characterized at each sampling site, and precipitation, weather and lunar phases are described for each sampling period.

From June 23-28 and on August 6, 2002, Mount Rainier Wildlife Program staff conducted a small mammal inventory, a rapid assessment of bat species, and documented the presence of other mammals in the area at Fort Vancouver National Historical Site (FOVA) and parts of the Vancouver National Historic Reserve (Reserve). Our small mammal inventory focused on live trapping in seven habitat types for 600 trap-nights. We captured 74 unique individuals of five different species (+ two unknown) and documented two additional species incidentally. The most frequently-trapped species was the deer mouse (Peromyscus maniculatus). We collected eight voucher specimens to include at least one of each of the five species trapped. We were unable to capture bats in one night of mist-netting in the Reserve but did identify big brown bat (Eptesicus fuscus) calls using an electronic bat detector and visually documented likely two different Myotis species.