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We analyzed very-high-resolution imagery to assess status of Metrosideros polymorpha forests across an 83,603-hectare study area that experienced extensive canopy dieback in the 1970s on the eastern side of the island of Hawaii. Using GIS we generated 1,170 virtual vegetation plots with a 100-m radius; 541 plots in areas mapped in 1977 with trees dead or mostly defoliated (dieback), and 629 plots in adjacent wet forest habitat, previously mapped as non-dieback condition. In each plot we estimated the percent of M. polymorpha trees dead or mostly defoliated, and percent of trees with healthy crowns. These results were combined with habitat data to produce a spatial model depicting probability of canopy dieback within...
This data release includes metadata and tabular data that document the responses of koa moths and other insects to changes in habitat conditions before and after koa (Acacia koa) defoliation by koa moth caterpillars (Scotorythra paludicola) at Hakalau Forest National Wildlife Refuge during 2013-2014. Data sets document changes in (1) koa moth abundance, (2) koa moth caterpillar abundance, (3) koa moth parasitoid abundance, (4) koa moth caterpillar frass production, and (5) koa moth caterpillar parasitism rate.
Hawaiʹi’s most widespread native tree, ʹōhiʹa lehua (Metrosideros polymorpha), has been dying across large areas of Hawaiʹi Island mainly due to two fungal pathogens (Ceratocystis lukuohia and Ceratocystis huliohia) that cause a disease collectively known as Rapid ʹŌhiʹa Death (ROD). Here we examine patterns of positive detections of C. lukuohia as it has been linked to the larger mortality events across Hawaiʹi Island. Our analysis compares the environmental range of C. lukuohia and its spread over time through the known climatic range and distribution of ʹōhiʹa. This data release consists of two rasters, one containing the projected suitability for C.lukuohia and another consisting of modeled presence/absence...
In this study, we create and evaluate a protocol to estimate the density, which can be used to estimate the abundance of terrestrial sound-producing animals from single automatic sound recorders. The protocol uses cue rates from the target species as well as sampling conditions and an estimate of the distance of the individual to the recorder based on the power of the sound. We applied our protocol to estimate the density of two Hawaiian forest bird species (Hawaiˊi ˊamakihi, Chlorodrepanis virens and ˊōmaˊo, Myadestes obscurus) on the island of Hawaiˊi, USA. We validate our approach by comparing our density estimations with others calculated at the same stations using a traditional point-transect distance sampling...
This data release includes metadata and tabular datasets that document (1) Austropuccina, Ceratocystis and Myrtaceae qPCR (quantitative polymerase chain reaction) DNA detections in Passive Environmental Samplers (PES), (2) wind speed, wind gust speed, and wind direction measurements collected at two sites in the Kahuku Unit of Hawai'i Volcanoes National Park (HAVO) where paired PES were located, (3) localities, sites and elevations where PES were located, and (4) Genbank accession numbers for Austropuccinia and Ceratocystis DNA sequences amplified from samples collected in a subset of PES. These raw data were analyzed and reported in the manuscript "Environmental Monitoring for Invasive Fungal Pathogens of ʽŌhiʽa...
It is unclear whether DNA (Deoxyribonucleic Acid) lysis buffers used for preservation of whole blood samples from Hawaiian forest birds cause denaturation and loss of antigen binding capability of antibody molecules. If their antigen binding capability is not affected, then the samples can be used in serological assays to provide an independent assessment of the accuracy of PCR (polymerase chain reaction) diagnostic tests for avian malaria. This data release consists of three tabular datasets of raw absorbance measurements that were collected with a BioRad Model 3550 ELISA (Enzyme linked Immunosorbant Assay) plate reader at a wavelength setting of 405 nm from serial dilutions of whole blood that were preserved with...
This release includes data and metadata (1-2) documenting visitation of ambrosia beetles (Coleoptera: Curculionidae) to healthy ʻōhiʻa (Metrosideros polymorpha) trees in two separate experiments, (3) geographical location and details of the trees used in the experiments, (4) culture of the fungal pathogens Ceratocystis lukuohia and Ceratocystis huliohia from naturally and experimentally infected ambrosia beetles, and (5) experimental transmission of the pathogens to healthy ʻōhiʻa seedlings by multiple species of ambrosia beetles. Data were used in the manuscript titled, "Ambrosia beetles (Coleoptera: Curculionidae) can directly transmit the fungal pathogens responsible for Rapid ʻŌhiʻa Death." This version of this...
This data release includes data and metadata used in the estimation of Ceratocystis lukuohia survival in ambrosia beetle frass under various temperature and humidity conditions on Hawaiʻi Island. Data were used in the analysis of the manuscript, "Ceratocystis lukuohia-infested ambrosia beetle frass as inoculum for Ceratocystis wilt of Metrosideros polymorpha." Frass was exposed at two locations including Volcano and Hilo, as well as a control incubator and frass was tested for viable C. lukuohia propagules through a carrot baiting technique over time.
Acoustic sampling for occurrence of the endangered Hawaiian hoary bat (Lasiurus cinereus semotus) was conducted at 12 locations on U. S. Army facilities on O‘ahu Island, Hawai‘i. Bats were confirmed as present at 10 of these locations: Dillingham Military Reservation, Helemano Military Reservation, Kahuku Training Area, Kawailoa Training Area, Mākua Military Reservation, Schofield Barracks East Range, Schofield Barracks West Range, Schofield Barracks (Mendonca Park Housing), Tripler Army Medical Center, and Wheeler Army Airfield. Our acoustic sampling did not record bat vocalizations at Fort DeRussy or Fort Shafter. Despite the presence of bats at the above 10 locations, foraging activity as identified from characteristic...
Categories: Data;
Tags: Hawaiian hoary bat,
Oahu,
USGS Science Data Catalog (SDC),
Wildlife Biology,
acoustic monitoring,
This data release contains the point-transect distance sampling records of forest bird survey collected in the Kohala Mountain complex in 2017, including survey point IDs, distance to detected birds, sampling conditions, ohia phenology, habitat classifications and background noise levels. This data release consists of one tabular dataset.
Categories: Data;
Tags: Ecology,
Hawaii Island,
Hawaii, USA,
Kohala Mountain complex,
Point-transect distance sampling,
This data release includes metadata and tabular data that document the responses of birds to changes in habitat conditions before and after koa (Acacia koa) defoliation by koa moths (Scotorythra paludicola). Data sets document changes in the (1) use of tree species, (2) arthropod composition of diets, and (3) body mass.
This data release includes metadata and tabular data that documents species of caterpillars collected from different plant species at Hakalau Forest National Wildlife Refuge during 2017-2018. Data sets document (1) numbers of caterpillars collected on each plant species, (2) caterpillar host plant associations, (3) the fate of caterpillars during rearing, (4) types of mandibles possessed by different caterpillar species, and (5) a plant and caterpillar species list.
This data release includes data and metadata on plant and substrate cover, seedling counts, canopy cover, burn severity, and location information for plots that were established to monitor the efficacy of post-fire seed addition in Hawaiʻi Volcanoes National Park on the Island of Hawaiʻi.
This data release includes data and metadata containing (1) ʻōhiʻa (Metrosideros polymorpha) tree locations tested for Rapid ʻŌhiʻa Death (ROD) at Keaukaha Military Reserve, Hilo, HI (2) out-planted ʻōhiʻa seedling information and survival status and (3) raw quantitative polymerase chain reaction (qPCR) results for all Ceratocystis lukuohia and huliohia testing. Data were used in the analysis for the manuscript "Successful restoration of Metrosideros polymorpha (ʻōhiʻa) is possible in forest sites with active Rapid ʻŌhiʻa Death infections." ʻŌhiʻa seedlings were planted under ROD-infected and non-infected ʻōhiʻa trees and soil, and monitored for ROD for one year.
Climate change in Hawaiʻi is expected to result in increasing temperatures and varying precipitation through the twenty-first century. Already, high elevation areas have experienced rapidly increasing temperatures and there has been an increase in the frequency of drought across the Islands. These climatic changes could have significant impacts on Hawaiʻi’s plants and animals. Changes in temperature and moisture may make current habitat no longer suitable for some species, and could allow invasive species to spread into new areas. Hawaiʻi Volcanoes National Park is home to 23 species of endangered vascular plants and 15 species of endangered trees. Understanding how climate change may impact the park’s plants...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2014,
CASC,
Climate Change,
Completed,
Data Visualization & Tools,
We tracked the movement of 15 ‘Io, or Hawaiian Hawks (Buteo solitarius) from 2019-2021. Individuals were tracked for up to 18 months across a diverse landscape on the eastern side of the Island of Hawai'i. GPS-GSM (global positioning system location with global system of mobile communications) tracking tags were placed on each bird, with locations obtained every 1 hour during diurnal hours, and every 3 hours during nocturnal hours, with two birds having locations obtained every 2 hours as a result of tag power issues. A total of 111,320 locations were obtained.
Categories: Data;
Tags: Hawaiian Hawk,
Io,
Island of Hawaii,
Movement ecology,
USGS Science Data Catalog (SDC),
These data were collected as part of several studies or efforts to remove brown treesnakes (Boiga irregularis) across three sites located in Guam, USA and one site in Cocos Island (Dano), Guam, USA. The various goals of projects were distinct and these data were applied to a more intensive, cross site comparison on the height snakes were detected during visual surveys as a function of their size or body condition.
Categories: Data;
Tags: Arboreal,
Cocos Island, Guam,
Guam,
USGS Science Data Catalog (SDC),
Wildlife Biology,
Point count survey data collected from 1998 through 2018 to estimate palila abundance on Mauna Kea. Point counts were conducted on 32 transects surrounding Mauna Kea volcano on Hawaii Island. Transects extended from roughly treeline through the forested area, with survey stations approximately 150 m apart. Counts were conducted for six minutes, during which the species, distance to, and detection type were recorded for all birds observed. First posted: December 6, 2018 (Version unavailable since it contains sensitive information. All non-sensitive data is contained in version 2.0).
Categories: Data;
Tags: Hawaii County 1,
Mauna Kea,
USGS Science Data Catalog (SDC),
biogeography,
biological population management,
We examined data from multiple studies (1994-2020) conducted across the avian annual cycle, from multiple locations, to evaluate molt patterns and establish criteria for assignment of age and sex based on the WRP (Wolfe-Ryder-Pyle) method, or molt-cycle age classification system designed specifically for tropical species. In addition, we describe the phenologies of molt and breeding and quantify the differences in males and females based on plumage coloration and morphometrics for eight native species. This data release includes two tabular datasets, one containing breeding phenological data and the other containing morphometric data. The phenological data presents information of active breeding condition in birds...
Categories: Data;
Tags: Hawaii forest birds,
Island of Hawaii,
Molt,
USGS Science Data Catalog (SDC),
Wildlife Biology,
Blood and feathers were collected from Hawaii forest birds (Apapane and Hawaii Amakihi) in high elevation forest to assess evidence for altitudinal movement. Feathers, red blood cells and plasma were analyzed for hydrogen, carbon, and nitrogen stable isotope ratios, and these were used to infer changes in elevation and diet over time. For each species, at one of 3 sites, isotope values from one or more tissues and isotopes are listed.
Categories: Data;
Tags: Altitudinal movement,
Ecology,
Hawaii Volcano National Park,
Hawaii forest birds,
Kau Forest,
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