Brown treesnake (Boiga irregularis) researchers tour a Guam Power Authority power substation to see how energy infrastructure is vulnerable to outages due to snakes.
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Researchers at GPA substation on Guam
Brown treesnake (Boiga irregularis) researchers tour a Guam Power Authority power substation to see how energy infrastructure is vulnerable to outages due to snakes.
Biologists measure a brown treesnake
Three biologists capture a brown treesnake (Boiga irregularis) and record its measurements during field work on Guam. Bea Daria (center) trains Keisha Johnson (left) and Christiana Quinata (right) on the capture and processing of brown treesnakes.
Three biologists capture a brown treesnake (Boiga irregularis) and record its measurements during field work on Guam. Bea Daria (center) trains Keisha Johnson (left) and Christiana Quinata (right) on the capture and processing of brown treesnakes.
Mariana swiftlets on Guam
Mariana swiftlets (chachaguak; Aerodramus bartschi) roosting in Mahlac Cave on Guam.
Mariana swiftlets (chachaguak; Aerodramus bartschi) roosting in Mahlac Cave on Guam.
Brown treesnake crossing wires
Example of a brown treesnake (Boiga irregularis) wrapped around two wires. This image is an example of how adult brown treesnakes can bridge power lines and cause power outages. The brown treesnake is an arboreal invasive species on Guam where researchers have discovered electrocuted snakes on power lines and at substations.
Example of a brown treesnake (Boiga irregularis) wrapped around two wires. This image is an example of how adult brown treesnakes can bridge power lines and cause power outages. The brown treesnake is an arboreal invasive species on Guam where researchers have discovered electrocuted snakes on power lines and at substations.
Automated radio telemetry base station
A major advancement in the use of radio telemetry has been the development of automated radio tracking systems (ARTS) which allow animal movements to be tracked continuously. A new ARTS approach is the use of a network of simple radio receivers (nodes) that collect radio signal strength (RSS) values from animal-borne radio transmitters.
A major advancement in the use of radio telemetry has been the development of automated radio tracking systems (ARTS) which allow animal movements to be tracked continuously. A new ARTS approach is the use of a network of simple radio receivers (nodes) that collect radio signal strength (RSS) values from animal-borne radio transmitters.
Scientist holding brown treesnake
A USGS scientist holds an invasive brown treesnake.
A USGS scientist holds an invasive brown treesnake.
Guam and CNMI Coral Reefs and Coastal Hazard Risk Reduction
Guam and CNMI Coral Reefs and Coastal Hazard Risk ReductionRigorously Valuing the Role of Guam’s Coral Reefs and the Commonwealth of the Northern Mariana Islands’s Coral Reefs in Coastal Hazard Risk Reduction
Estimated Annual Benefits
Guam and CNMI Coral Reefs and Coastal Hazard Risk Reduction
Guam and CNMI Coral Reefs and Coastal Hazard Risk ReductionRigorously Valuing the Role of Guam’s Coral Reefs and the Commonwealth of the Northern Mariana Islands’s Coral Reefs in Coastal Hazard Risk Reduction
Estimated Annual Benefits
Healthy coral reef in the Tumon Bay Marine Preserve
Healthy coral reef in the Tumon Bay Marine PreserveA healthy coral reef in the Tumon Bay Marine Preserve off Tumon, Guam, showing a number of different species of fish swimming over a high coral cover reef composed of a number of hard and soft coral species.
Healthy coral reef in the Tumon Bay Marine Preserve
Healthy coral reef in the Tumon Bay Marine PreserveA healthy coral reef in the Tumon Bay Marine Preserve off Tumon, Guam, showing a number of different species of fish swimming over a high coral cover reef composed of a number of hard and soft coral species.
Piti Bomb Holes Marine Preserve, Guam
Many species of fish in the Piti Bomb Holes Marine Preserve off Piti, Guam.
Many species of fish in the Piti Bomb Holes Marine Preserve off Piti, Guam.
Guam Geomagnetic Observatory
Guam geomagnetic observatory.
Guam geomagnetic observatory.
A brown treesnake on frangipangi blossoms
A brown treesnake crawls on some frangipangi blossoms in Guam.
A brown treesnake crawls on some frangipangi blossoms in Guam.
A brown treesnake in a tree in Guam.
This is an image of a brown treesnake in a tree in Guam, taken in 2009.
This is an image of a brown treesnake in a tree in Guam, taken in 2009.
A brown treesnake in a tree in Guam.
A brown treesnake in a tree in Guam. Photo by Bob Reed, USGS, 2009.
A brown treesnake in a tree in Guam. Photo by Bob Reed, USGS, 2009.
Fish and coral in Tumon Bay Marine Reserve, Guam
Underwater photograph of Tumon Bay Marine Reserve, Guam, showing some of the amazing biologic diversity of coral reefs.
Underwater photograph of Tumon Bay Marine Reserve, Guam, showing some of the amazing biologic diversity of coral reefs.
Bleached coral in Tumon
Underwater photo of a stressed coral mound in Tumon Bay Marine Preserve in Guam.
Underwater photo of a stressed coral mound in Tumon Bay Marine Preserve in Guam.
Guam Geomagnetic Observatory
Variations building at Guam geomagnetic observatory.
Variations building at Guam geomagnetic observatory.