Pacific Island Ecosystems Research Center

Data and Tools

Filter Total Items: 125
Date published: January 1, 2018

Palila point count data from annual Mauna Kea surveys 1998-2018

Point count survey data collected from 1998 through 2018 to estimate palila aboundance 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...

Date published: January 1, 2018

Molokai (Kawela) USGS ridge-to-reef vegetation monitoring study 2009-2014 - raw data file

This file contains the raw data collected as part of a vegetation monitoring study that was conducted to assess the changes in plant species frequency inside and outside a fenced exclosure, constructed to eliminate browsing and grazing by feral goats, from 2009-2014 in the US Geological Survey's Kawela research site on the island of Molokai, Hawaii.

Date published: January 1, 2018

Oahu multi-state occupancy models of foraging habitat use by Hawaiian hoary bats 2017

This data release consists of a single table that includes sample site geographic locations, insect prey abundance, and bat activity and behavior metrics. The dataset was used to develop multi-state occupancy models of foraging habitat use by Hawaiian hoary bats (Lasiurus cinereus semotus).

Date published: January 1, 2018

Hawaii Island Hoary Bat Acoustic and Visual Surveys 2014

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.

Date published: January 1, 2018

Monitoring Hawaiian Biodiversity: Pilot study to assess changes to Hawaii Island forest birds and their habitat - 2015 vegetation species dataset

The Hawaii Forest Bird Survey (HFBS) systematically characterized plant and bird communities across transects spanning all major Hawaiian Islands except O‘ahu. This extensive dataset has now been organized into a database and associated geographic information system (GIS) layers. This baseline provides an opportunity to assess how forest ecosystems and their constituent bird and...

Date published: January 1, 2018

Molokai (Kawela) USGS ridge-to-reef vegetation monitoring study 2009-2014 – plant species list

List of all plant species found in, or adjacent to, plots K1 or K2 during all the sampling periods. Species recorded at least once during the vegetation transect surveys are marked with “Yes”. The taxonomy follows Wagner and others (2005).

Date published: January 1, 2018

Height of shrubs on south facing slopes of Santa Cruz Island, CA, in 2004 and 2016

This data contains the height of shrubs found along transects on the south facing slopes of Santa Cruz Island, CA. It was used in the analysis for the Manuspcript "Long-term impacts of exotic grazer removal on native shrub recovery, Santa Cruz Island, California". These sites were sampled in 2004 and 2016 to gain a longer term view on native shrub reestablishment into exotic grasslands after...

Date published: January 1, 2018

Monitoring Hawaiian Biodiversity: Pilot study to assess changes to Hawaii Island forest birds and their habitat - 2015 vegetation structure dataset

The Hawaii Forest Bird Survey (HFBS) systematically characterized plant and bird communities across transects spanning all major Hawaiian Islands except O‘ahu. This extensive dataset has now been organized into a database and associated geographic information system (GIS) layers. This baseline provides an opportunity to assess how forest ecosystems and their constituent bird and...

Date published: January 1, 2018

Molokai (Kawela) USGS ridge-to-reef vegetation monitoring study 2009-2014

This data release contains two files: 1) the raw data collected as part of a vegetation monitoring study that was conducted to assess the changes in plant species frequency inside and outside a fenced exclosure, constructed to eliminate browsing and grazing by feral goats, from 2009-2014 in the US Geological Survey's Kawela research site on the island of Molokai, Hawaii. 2) A list of species...

Date published: January 1, 2018

Occurrence of natural nest cavities in montane ohia trees in Hawaii Volcanoes National Park

We quantified the availability of breeding habitat of the endangered Hawaiian Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros polymorpha) trees but birds commonly occur in short stature trees that presumably do not have any natural cavities because of their polyploidal (many-branched) structure. To test this hypothesis we...

Date published: January 1, 2018

Location of transects on south facing slopes of Santa Cruz Island, CA, in 2004 and 2016

This data contains the location of transects on the south facing slopes of Santa Cruz Island, CA that were used to collect percent cover and shrub abundance data. It was used in the analysis for the Manuspcript "Long-term impacts of exotic grazer removal on native shrub recovery, Santa Cruz Island, California". These same transects were sampled in 2004 and 2016 to gain a longer term view on...

Date published: January 1, 2018

Laysan Island coastline 2010May18

This dataset contains a screen-digitized coastline for Laysan Island based on a DigitalGlobe WorldView-2 satellite image taken on May 18, 2010. After digitization the coastline was corrected for tide using a 1-meter digital elevation model (DEM). It was also smoothed in ArcGIS 10 to remove some of the inherent jaggedness from the point-by-point digitizing process. Like most of the Northwestern...