This data release includes metadata and tabular data that documents the taxonomic classification of arthropods collected from litterbags and quadrats placed on the forest floor at the Liko Nā Pilina study site located on the Keaukaha Military Reservation, Hilo, Hawai‘i. The Integrated Taxonomic Information System (ITIS) was used to develop this classification dataset. Samples were processed in the lab during 1 March 2020 - 31 December 2022.

This data release includes metadata and tabular data that documents counts of arthropods collected from forest litter at the Liko Nā Pilina study site located on the Keaukaha Military Reservation, Hilo, Hawai‘i. These data are represented in three files: 1) a description of the date and location for each sample, 2) classification for all taxa, and 3) counts of each taxon in each sample. The classification file is in lieu of listing all taxa in the Taxonomic Classification section of the metadata files. Arthropods were extracted from litterbags containing leaves from dominant plant species within the study site and from litter collected in randomly placed quadrats. Samples were obtained after 1, 2, 4 and 6 months during 28 August 2019 - 28 January 2020. Samples were processed in the lab during 1 March 2020 - 31 December 2022, and taxa identified during 1 April - 31 December 2023. Quantitative data are only included for the litterbag samples. Overall, 319 arthropod taxa are included in this data release.

This data release includes data and metadata on litter decomposition rates for Acacia koa (koa) and Metrosideros polymorpha (‘ōhi‘a) leaves in in different microhabitats. All sites were within Hakalau Forest National Wildlife Refuge on Hawaii Island. Broadly, this study looked at the ability to alter soil nitrogen cycling, exotic grass biomass and native outplant survival with large quantities of Metrosideros polymorpha litter in a forest dominated by Acacia koa.

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.

This data release comprises a collection of high-resolution environmental raster data for the Hawaiian Islands, developed to support conservation planning and ecological research. The collection includes both 30-meter and 10-meter resolution GeoTIFFs with topographical variables (elevation, aspect, slope, hillshade, and geomorphon landform classification), as well as complementary ecological variables (vegetation height, habitat quality, and mean annual temperature and rainfall). All rasters have been processed to share consistent resolution, extent, and projection (WGS84), making them readily integrated into spatial analyses and tool development. The primary source data for the topographical variables was the USGS National Map. The dataset provides standardized environmental layers that can be used to identify suitable microhabitats for species conservation, restoration site selection, and ecological modeling across the Hawaiian archipelago. This data release is divided into 3 files: -a 10m resolution GeoTIFF raster stack containing multiple topographical variables for the Hawaiian Islands (elevation, aspect, slope, hillshade, and geomorphon landform classification). -a 30m resolution GeoTIFF raster stack containing multiple topographical variables for the Hawaiian Islands (elevation, aspect, slope, hillshade, and geomorphon landform classification). -a 30m resolution GeoTIFF raster stack containing multiple ecological/climatic variables that describe natural habitats across the Hawaiian Islands (vegetation height, habitat quality, mean annual temperature and rainfall).

This data release includes metadata and tabular data that document estimates of litterfall, koa moth (Scotorythra paludicola) caterpillar frass production, soil nutrients, and foliar nutrients during 2013-2014 at Hakalau Forest National Wildlife Refuge. During this time, there was a massive defoliation event of Acacia koa (koa) trees by the koa moth. We monitored these metrics in 4 sites that varied in forest structure and composition at Hakalau. We used litter traps to monitor koa litter fall over time and foliar %N to estimate N inputs from litter. We used caterpillar counts, koa canopy estimates, frass production rates, and frass %N to estimate N inputs from frass on the landscape. We used resin bags under koa canopy where frass was directly falling as compared to open grass sites where no frass was falling to monitor soil inorganic N and P over time. Finally we collected foliage of various plant species over time, and tested for %N, under koa versus in the open to track how nutrients in frass fall may track into plants.

This dataset comprises high-resolution geotif files representing various aspects of the ʻākohekohe (Palmeria dolei) potential habitat on the Island of Hawaiʻi. It includes a habitat suitability map showing average suitability scores, a map of homogenous forested areas (HFAs) depicting clusters with consistent suitability scores, and a map of pixel-wise standard deviation across habitat suitability models. These maps were generated through a comprehensive analysis using lidar-based metrics, offering detailed insights into the habitat preferences of ʻākohekohe.

This dataset was derived from CAD data originally published in URS Greiner Woodward Clyde, 1999, Environmental Investigation: Former U.S. Coast Guard LORAN Station, Tern Island, French Frigate Shoals, Hawaii. URS Greiner Woodward Clyde (URSGWC) was retained by the United States Coast Guard (USCG) Civil Engineering Unit (CEU) to conduct an environmental investigation at the former USCG long range navigation (LORAN) station on Tern Island. The investigation concentrated on the northwestern corner of Tern Island where the greatest environmental impact from the US military's past occupation of the island appears to have occurred.

This dataset was derived from CAD data originally published in URS Greiner Woodward Clyde, 1999, Environmental Investigation: Former U.S. Coast Guard LORAN Station, Tern Island, French Frigate Shoals, Hawaii. URS Greiner Woodward Clyde (URSGWC) was retained by the United States Coast Guard (USCG) Civil Engineering Unit (CEU) to conduct an environmental investigation at the former USCG long range navigation (LORAN) station on Tern Island. The investigation concentrated on the northwestern corner of Tern Island where the greatest environmental impact from the US military's past occupation of the island appears to have occurred.