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Habitat use, diet, prey availability and foraging ecology of the endangered Hawaiian hoary bat (Lasiurus cinereus semotus, Vespertilionidae), was examined in the east Maui region inclusive of the Waihou Mitigation Area, Pu‘u Makua Restoration Area and the wind power facility operated by Auwahi Wind Energy, LLC. Research funding was provided to conduct the bat ecology study by Auwahi Wind Energy, LLC, in order to fulfill requirements for mitigating bat fatalities under its approved incidental take permit. This study included the first genetic analysis of Hawaiian hoary bat guano items, and broadly confirms the major arthropod orders (Coleoptera, Lepidoptera, Diptera, Hemiptera, and Blattodea) found in previous microscopy-based...
This data set provides the locations of the ground-based vegetation plots that have been used to assess the status of the ohia forests on the eastern side of the island of Hawaii following a landscape-level canopy dieback event that occurred in this area in the 1970s. These plots have been resurveyed several times and the results summarized by Boehmer et al. 2013.
We examined Hawaiian hoary bat (Lasiurus semotus) presence 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 from 2007 through 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...
Arthropods are important prey for most forest birds in Hawaii. The relative abundance of arthropods on koa (Acacia koa) changed significantly during an outbreak of the koa moth (Scotorythra paludicola) that occurred across much of Hawaii Island during 2013-2014. The outbreak resulted in large tracts of koa forest becoming defoliated by large numbers of koa moth caterpillars. This data release includes metadata and tabular data that documents how bird diets changed at Hakalau Forest National Wildlife Refuge during the outbreak. The data set documents numbers of koa moth caterpillars and other arthropod prey consumed by forest birds prior to, and during the koa moth outbreak. Diets were reconstructed by identifying...
Categories: Data;
Tags: Hakalau Forest National Wildlife Refuge,
Hawaii Island,
biota,
birds,
caterpillar,
The koa moth (Scotorythra paludicola) has been reported to irrupt on occasion over the past 100 years, sometimes defoliating its host plant, koa (Acacia koa), during the event. This data release includes metadata and tabular data that document temporal abundance patterns and of the koa moth caterpillar (Scotorythra paludicola) during an outbreak of the koa moth that resulted in widespread defoliation of koa across much of Hakalau Forest National Wildlife Refuge during 2013-2014. The data set documents numbers of caterpillars collected from koa foliage during the outbreak. To track caterpillar abundance during this event, koa branch tips were clipped from trees and the number of caterpillars within the foliage counted,...
Categories: Data;
Tags: Hakalau Forest National Wildlife Refuge,
Hawaii Island,
biota,
caterpillar abundance,
insect outbreak
The Hawaiian hoary bat (Lasiurus cinereus semotus), a federally and state listed endangered subspecies, is the only extant native terrestrial mammal in the Hawaiian archipelago. It is an insectivorous, solitary and foliage-roosting species that generally roosts alone or in mother-pup family groups. This study examined the behavior of Hawaiian hoary bats at wind turbines operated by Auwahi Wind Energy, LLC, on southern Maui Island, from August to November 2018. The research was conducted to assess the risk that wind turbines pose to bats at the wind energy facility, and compared information obtained from both acoustic monitoring and thermal videography. The dataset for this release comprises the thermal video data...
Acoustic derived point-transect data used to estimate densities of ˊōmaˊo (Myadestes obscurus) songs.
Categories: Data;
Types: Citation;
Tags: Acoustic data,
Calls,
Density estimation,
Hakalau Forest National Wildlife Refuge,
Hawaiˊi, USA,
This USGS data release consists of seven data sets and accompanying metadata for studies on the efficacy of adult mosquito traps and lures for monitoring populations of the invasive mosquito Culex quinquefasciatus and the efficacy of the biopesticide VectoMax FG for control of larval Culex quinquefasciatus in Hawaiian forest bird habitat. Culex quinquefasciatus is the vector of the avian malaria Plasmodium relictum a key limiting factor of forest birds. The main components of the study included: 1) the evaluation of trap designs and lures for adult mosquitoes in forested habitat and the prevalence of malaria in those mosquitoes (Hawaii Island 2 data files), 2) Kawaikoi Stream surveys for larval mosquitoes and suitable...
Rapid ʻŌhiʻa Death is a fatal disease caused by Ceratocystis lukuohia and C. huliohia that are decimating Hawaiʻiʻs keystone trees species, ʻōhiʻa (Metrosideros polymorpha). We developed practical and effective decontamination practices for both cultured C. lukuohia and C. huliohia as well as Ceratocystis spores embedded in ambrosia beetle frass (fine particles of macerated wood or boring dust, beetle parts, and feces). This data release includes data and metadata containing decontamination results of ambrosia beetle (Coleoptera: Scolytinae) frass contaminated with Ceratocystis lukuohia propagules using various laboratory and household disinfectants.
This dataset represents global occurrences for CRB and consists of a table of coordinates, associated mean annual temperatures and precipitation values, and occurrence type used to create bioclim habitat suitability models for CRB. These global occurrences are classified into 4 types: 1) all available global data (excluding Hawaii); 2) only occurrences within CRB's native range; 3) only occurrences in the species non-native range (excluding Hawaii); 4) only occurrences in the species insular non-native range (excluding Hawaii).
Categories: Data;
Tags: CRB,
Coconut rhinoceros beetle,
Coconut rhinoceros beetle,
Hawaii,
Hawaiian Islands,
This data release includes data and metadata on 1) avian diet 2) seed rain 3) understory plant composition 4) seedling abundance and 5) sampling locations for these sites. In addition it includes data on seedling abundance, grass cover and light levels for a grass removal/seed addition experiment . All sites were within Hakalau Forest National Wildlife Refuge on Hawaii Island. This study looked at multiple biotic interactions that potentially lead to self-reinforcing feedbacks within intact forest and degraded forest sites. Specifically, this data describes seedling recruitment in experimental plots where we add seed and removed grass to ask what limits seedling recruitment in this ecosystem.
Categories: Data;
Tags: Hakalau Forest National Wildlife Refuge,
Hawaii,
avian diet,
botany,
ecology,
These data contain the gps coordinates of ʻōhiʻa trees used in documenting the visitation of ambrosia beetles to ʻōhiʻa trees in two different experiments. The diameter at breast height (DBH; cm) of the trees were also recorded.
These data include bark and ambrosia beetle (Coleoptera: Curculionidae) species directly reared from ʻōhiʻa lehua (Metrosideros polymorpha) wood infected with either Ceratocystis lukuohia or Ceratocystis huliohia, the pathogens responsible for Rapid ʻŌhiʻa Death (ROD). Rearing took place on Kauaʻi between January 2020 and November 2021.
This is a selected data set that outlines the plot areas used to assess the impacts of rodenticide treatment on black rat (Rattus rattus) abundance within Hawaii Volcanoes National Park (HAVO). These data provide the spatial reference for a larger work describing the response of native species to rat control. Included are the corner boundaries for the 700x700 m (49 ha) study plots and each grid point/station within the centralized 300x300 m (9 ha) sub-plot at both the treatment and non-treatment site. Traps were placed 50 m apart, one at each station in the trapping grid, for a total of 49 traps in each of the sub-plots. The rodenticide treatment and native species monitoring were conducted using the entire 49 ha...
Categories: Data;
Tags: Hawaii,
Hawaii County 2,
Hawaii Volcanoes National Park,
biota,
invasive species,
The yǻyaguak (Mariana swiftlet; Aerodramus bartschi) is an endangered cave-nesting species historically found on Guam and the southern Mariana Islands, Micronesia. The population on Guam has been severely impacted by the introduction of the brown treesnake (Boiga irregularis). Population status assessments have, however, been challenging due to the limitations of traditional counting methods, which rely on visual observations at cave entrances and are prone to inaccuracies. To improve count accuracy, we estimated yǻyaguak population size and relative nesting activity using thermal and near-infrared videography at Mahlac, Maemong and Fachi Caves from April 2019 to April 2023. This study demonstrates the potential...
We created a comprehensive estimate of potential distribution for a subset of 17 ecosystem modifying invasive plants (EMIPs) in Hawaiʻi. This work uses methods that integrate a wide set of data sources including agency and citizen science data, but perhaps more importantly, the integration of regional and global distribution information for these species. We developed transferable and comparable general species distribution models (SDMs) at global and regional scales based on a minimum set of biologically plausible predictors. The regional models were developed for each species using only regional location data and pseudo-absences (PAs) wihtin the extent of the main Hawaiian Islands and regionally derived bioclimatic...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Baseline Climate,
Ensemble Model Projections,
Hawai’i,
Invasive Plants,
Main Hawaiian Islands,
These two raster data layers depict the land cover and degree of human disturbance to plant communities on the seven main Hawaiian Islands, and were developed as part of a comprehensive USGS assessment of carbon sequestration potential by natural ecosystems in the State of Hawaii.
As part of a larger study looking at the seasonal distribution and relative abundance of the southern house mosquito Culex quinquefasciatus in Kīpahulu Valley, Haleakalā National Park, adult and immature mosquito distributions and abundance was monitored at two altitudinal sites throughout the year. Study sites at Delta Camp (915 m asl) and Palikea Camp (1280 m asl) were visited twice during each three-month season from September 2022 to September 2023. At each study site, 15 BioGents (BG) Sentinel II traps (S), 15 BioGents Pro traps (P), 15 Center for Disease Control (CDC) Gravid traps (G), and 15 ovicups to monitor egg laying females (and collect egg rafts) were operated for 4-7 nights across a 1-kilometer square...
Categories: Data;
Tags: Haleakalā National Park,
Kīpahulu Valley,
Maui,
Palikea Stream,
USGS-EMA-LOW Fish and Wildlife Disease,
These data contain ambrosia beetle (Coleoptera: Curculionidae) trapping data using two different lures at Waiākea Forest Reserve and ʻŌlaʻa Forests of Hawaiʻi Island. Beetles were trapped using black panel multi-traps. The lures included a 50:50 Ethanol:Methanol mixture and a 100% Ethanol lure. Version 2.0 includes traps that were excluded from final analysis due to the traps being compromised in some way.
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