Pacific Island Ecosystems Research Center

Data and Tools

Filter Total Items: 127
Date published: December 19, 2018

Elepaio nest monitoring data in Hawaii Volcanoes National Park from 2015-2017

We evaluated the nesting response of Hawai‘i ‘Elepaio (Chasiempis sandwichensis; Monarchidae), a generalist insectivore, to the removal of black rats using rodenticide in a before-after-control-impact study in high and low, mesic montane habitat recovering from long-term damage from introduced ungulates and weeds. We monitored nesting activity during 2015–2016...

Date published: December 19, 2018

Rat mark-recapture data in Hawaii Volcanoes National Park from 2015-2017

In Hawai‘i and other oceanic islands with few native land mammals, black rats (Rattus rattus) are among the most damaging invasive vertebrate species to native forest bird populations and habitats, due to their arboreal behavior and generalist foraging habitats and habitat use. This is a selected data set used to assess the impacts of rodenticide treatment on black rat (Rattus rattus...

Date published: December 13, 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: December 13, 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: December 13, 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: December 6, 2018

Palila survey locations, effort, and palila detected 2017-2018.

This shapefile is a summary of point count data collected to estimate abundance, showing the distribution of detections in the survey area on Mauna Kea volcano. Data was collected on 13 transects ranging from approximately treeline through the forested area of the mountain. Survey stations were approximately 150 m apart. At each station observers made a six minute count, recording the species...

Date published: December 6, 2018

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

Ongoing point-count surveys of Mauna Kea volcano on Hawaii were used to estimate abundance of Palila from 1998-2018. This data release includes the point count data used to estimate abundance and a point-process shapefile summarizing observed counts in 2017-2018.

Date published: December 6, 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: November 29, 2018

Hawaii Volcanoes National Park plant reproductive and rat abundance data, 2016-2017

This data included data and metadata on 1) the number of open fruit of Hibiscidelphus giffardianus, 2) Mark recapture data for rats, 3) location data for rat traps within plots and 4) seedling count data for Hibiscidelphus giffardianus. All sites were within Hawaii Volcanoes National Park. This study aims to evaluate the effect of rat population control on the ability of Hibiscadelphus...

Date published: November 29, 2018

Plot locations for "rat mark-recapture in rodenticide treatment and non-treatment plots, Hawaii Volcanoes National Park, fall 2016 and spring 2017"

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...

Date published: November 29, 2018

Seedling count data in Hawaii Volcanoes National Park in site with rats removed and control site, October 2016 to August 2017

This study aims to evaluate the effect of rat population control on the ability of Hibiscadelphus giffardianus to successfully establish seedlings. We compared H. giffardianus fruiting and recruitment in a stand treated for rats and a neighboring control stand. The study was conducted in two neighboring kīpuka, Kīpuka Puaulu and Kīpuka Kī, which are patches...

Date published: November 29, 2018

Data on the number of open fruit on individual Hibiscidelphus giffardianus plants in Hawaii Volcanoes National Park in a site with rats removed and control site, October 2016 to August 2017

This study aims to evaluate the effect of rat population control on the ability of Hibiscadelphus giffardianus to successfully establish seedlings. We compared H. giffardianus fruiting and recruitment in a stand treated for rats and a neighboring control stand. The study was conducted in two neighboring kīpuka, Kīpuka Puaulu and Kīpuka Kī, which are patches...