Publications
Click below for access to more than 170,000 publications written by USGS scientists over the century-plus history of the bureau.
Filter Total Items: 756
Dynamics of seabird colonies vulnerable to sea-level rise at French Frigate Shoals, Hawai`i
Globally, seabirds are vulnerable to anthropogenic threats both at sea and on land. Seabirds
typically nest colonially and show strong site fidelity; therefore, conservation strategies could
benefit from an understanding of the population dynamics and vulnerability of breeding colonies
to climate change. More than 350 atolls exist across the Pacific Ocean; while they provide
nesting habitat fo
Authors
Michelle H. Reynolds, Karen N. Courtot, Crystal M. Krause, Nathaniel E. Seavy, Paula Hartzell, Jeff S. Hatfield
Mw 8.6 Sumatran earthquake of 11 April 2012: rare seaward expression of oblique subduction
The magnitude 8.6 and 8.2 earthquakes off northwestern Sumatra on 11 April 2012 generated small tsunami waves that were recorded by stations around the Indian Ocean. Combining differential travel-time modeling of tsunami waves with results from back projection of seismic data reveals a complex source with a significant trench-parallel component. The oblique plate convergence indicates that ~20-50
Authors
Miaki Ishii, Eric Kiser, Eric L. Geist
Climate-associated population declines reverse recovery and threaten future of an iconic high-elevation plant
Although climate change is predicted to place mountain-top and other narrowly endemic species at severe risk of extinction, the ecological processes involved in such extinctions are still poorly resolved. In addition, much of this biodiversity loss will likely go unobserved, and therefore largely unappreciated. The Haleakalā silversword is restricted to a single volcano summit in Hawai‘i, but is a
Authors
Paul D. Krushelnycky, Lloyd L. Loope, Thomas W. Giambelluca, Forest Starr, Kim Starr, Donald R. Drake, Andrew D. Taylor, Robert H. Robichaux
Tamarix as wildlife habitat
No abstract available.
Authors
Heather L. Bateman, Eben H. Paxton, William S. Longland
Dispersal of fine sediment in nearshore coastal waters
Fine sediment (silt and clay) plays an important role in the physical, ecological, and environmental conditions of coastal systems, yet little is known about the dispersal and fate of fine sediment across coastal margin settings outside of river mouths. Here I provide simple physical scaling and detailed monitoring of a beach nourishment project near Imperial Beach, California, with a high portion
Authors
Jonathan A. Warrick
Abundance and distribution of feral pigs at Hakalau Forest National Wildlife Refuge, 2010-2013
The Hakalau Forest Unit of the Big Island National Wildlife Refuge Complex has intensively managed feral pigs (Sus scrofa) and monitored feral pig presence with surveys of all managed areas since 1988. Results of all available data regarding pig management activities through 2004 were compiled and analyzed, but no further analyses had been conducted since then. The objective of this report was to
Authors
Steven C. Hess, Christina R. Leopold, Steven J. Kendall
Photography applications
Photographic imaging is the oldest form of remote sensing used in coral reef studies. This chapter briefly explores the history of photography from the 1850s to the present, and delves into its application for coral reef research. The investigation focuses on both photographs collected from low-altitude fixed-wing and rotary aircraft, and those collected from space by astronauts. Different types o
Authors
Susan A. Cochran
Juvenile i`iwi detected in lower elevations of Hawaii Volcanoes National Park
The Hawaiian islands are home
to a diverse array of plants and
animals found nowhere else on
Earth. Among the most famous of
these are the spectacular Hawaiian
honeycreepers, a group that evolved
from a single flock of ancestral
finches into at least 54 unique
species. Unfortunately, the same
isolation that fostered such dramatic
adaptive radiation left Hawaiian
species vulnerable.
Un
Authors
Jacqueline M. Gaudioso, Angela T. Beck
Home range and use of habitat of western yellow-billed cuckoos on the middle Rio Grande, New Mexico
The western yellow-billed cuckoo (Coccyzus americanus occidentalis) is a Distinct Population Segment that has been proposed for listing under the Endangered Species Act, yet very little is known about its spatial use on the breeding grounds. We implemented a study, using radio telemetry, of home range and use of habitat for breeding cuckoos along the Middle Rio Grande in central New Mexico in 2007
Authors
Juddson Sechrist, Darrell Ahlers, Katherine Potak Zehfuss, Robert Doster, Eben H. Paxton, Vicky M. Ryan
Pacific Island landbird monitoring annual report, Haleakalā National Park, 2012
Haleakalā National Park (HALE) was surveyed for landbirds and habitat characteristics from March 20 through July 26, 2012. This information provides data in the time-series of landbird monitoring for long-term trends in forest bird distribution, density, and abundance. The Kīpahulu District of eastern Haleakalā Volcano was surveyed using point-transect distance sampling to estimate bird abundance.
Authors
Seth W. Judge, Richard J. Camp, Patrick J. Hart
Invasive species management restores a plant-pollinator mutualism in Hawaii
1.The management and removal of invasive species may give rise to unanticipated changes in plant–pollinator mutualisms because they can alter the composition and functioning of plant–pollinator interactions in a variety of ways. To utilize a functional approach for invasive species management, we examined the restoration of plant–pollinator mutualisms following the large-scale removal of an invasi
Authors
Cause Hanna, David Foote, Claire Kremen
Experimental evidence for evolved tolerance to avian malaria in a wild population of low elevation Hawai`i `Amakihi (Hemignathus virens)
Introduced vector-borne diseases, particularly avian malaria (Plasmodium relictum) and avian pox virus (Avipoxvirus spp.), continue to play significant roles in the decline and extinction of native forest birds in the Hawaiian Islands. Hawaiian honeycreepers are particularly susceptible to avian malaria and have survived into this century largely because of persistence of high elevation refugia on
Authors
Carter T. Atkinson, Katerine S. Saili, Ruth B. Utzurrum, Susan I. Jarvi