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Pacific Island Ecosystems Research Center

Research at the Pacific Island Ecosystems Research Center focuses on providing the scientific understanding and technologies needed to support and implement sound management and conservation of our Nation's biological resources occurring in Hawai'i and other Pacific island locations.

News

U.S. Geological Survey and U.S. Fish and Wildlife Service Joint News Release: Native forest bird population declines within the Big Island National Wildlife Refuge Complex 

U.S. Geological Survey and U.S. Fish and Wildlife Service Joint News Release: Native forest bird population declines within the Big Island National Wildlife Refuge Complex 

U.S. Geological Survey and U.S. Fish and Wildlife Service: A Conservation Orchestra for the Melodies of Hakalau Forest

U.S. Geological Survey and U.S. Fish and Wildlife Service: A Conservation Orchestra for the Melodies of Hakalau Forest

Scientists bite back at invasive mosquitoes, work for Hawaiian Honeycreeper conservation

Scientists bite back at invasive mosquitoes, work for Hawaiian Honeycreeper conservation

Publications

Post-Typhoon Mawar population counts of the endangered yǻyaguak (Mariana swiftlet) on Guam

The yǻyaguak (Mariana swiftlet, Aerodramus bartschi) is an endangered cave-roosting species native to Guam and southern Mariana Islands, Micronesia. The population on Guam has declined substantially over the last half century, likely due to the introduction of the brown treesnake (Boiga irregularis), but other factors have been proposed including habitat loss, pesticides, reduced food resources, a
Authors
Eben H. Paxton, P. Marcos Gorresen, Paul M. Cryan, Megan Parker

Evaluation of data collected by Guam Division of Aquatic and Wildlife Resources during population establishment and monitoring of ko'ko' (Hypotaenidia owstoni) on Rota, Commonwealth of the Northern Mariana Islands, and wildlife monitoring datasets on Coco

Efforts to recover the critically endangered ko’ko’ (Guam rail, Hypotaenidia owstoni) through establishing an experimental population on the island of Rota in the Commonwealth of the Northern Mariana Islands have been ongoing for three decades. The U.S. Geological Survey collaborated with the Guam Division of Aquatic and Wildlife Resources and the Government of Guam to evaluate whether objectives
Authors
Richard J. Camp, Sarah A B Nash, Kristina L. Paxton

Invasive-dominated grasslands in Hawaiʻi are resilient to disturbance

Non-native-dominated landscapes may arise from invasion by competitive plant species, disturbance and invasion of early-colonizing species, or some combination of these. Without knowing site history, however, it is difficult to predict how native or non-native communities will reassemble after disturbance events. Given increasing disturbance levels across anthropogenically impacted landscapes, pre
Authors
Stephanie G. Yelenik, Eli T. Rose, Susan Cordell

Science

Modeling First Records to Guide Invasive Species Biosurveillance in Hawai‘i

Early detection of invasive species can enable their successful eradication. With climate change and dynamic patterns of global trade, it is difficult to predict which new invasive species will next get introduced and where introduction and establishment will occur. We are analyzing where non-native species have first established in Hawai‘i to develop mapped predictions of the relative risk of new...
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Modeling First Records to Guide Invasive Species Biosurveillance in Hawai‘i

Early detection of invasive species can enable their successful eradication. With climate change and dynamic patterns of global trade, it is difficult to predict which new invasive species will next get introduced and where introduction and establishment will occur. We are analyzing where non-native species have first established in Hawai‘i to develop mapped predictions of the relative risk of new...
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Population Assessments of the Pacific Sheath-Tailed Bat and Mariana Swiftlet

Using thermal cameras, we are determining the population size and cave occupancy of the Mariana swiftlet and Pacific sheath-tailed bat. Both species face extirpation from the Northern Mariana Islands and are listed as endangered. Understanding the species' population status can assist in planning recovery efforts for both species.
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Population Assessments of the Pacific Sheath-Tailed Bat and Mariana Swiftlet

Using thermal cameras, we are determining the population size and cave occupancy of the Mariana swiftlet and Pacific sheath-tailed bat. Both species face extirpation from the Northern Mariana Islands and are listed as endangered. Understanding the species' population status can assist in planning recovery efforts for both species.
Learn More

Climatic and Ecological Scenarios to Guide Development of a Spatial Resist-Accept-Direct Portfolio at Nāpuʻu, Hawaiʻi

Climate change and invasive species are transforming ecosystems. The Resist-Accept-Direct (RAD) framework organizes management objectives into those that seek to Resist change and maintain historical ecological communities, those that Accept some or all aspects of ecological transformation, and those that Direct an ecological community to a preferred state. We are evaluating risks posed by climate...
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Climatic and Ecological Scenarios to Guide Development of a Spatial Resist-Accept-Direct Portfolio at Nāpuʻu, Hawaiʻi

Climate change and invasive species are transforming ecosystems. The Resist-Accept-Direct (RAD) framework organizes management objectives into those that seek to Resist change and maintain historical ecological communities, those that Accept some or all aspects of ecological transformation, and those that Direct an ecological community to a preferred state. We are evaluating risks posed by climate...
Learn More