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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: 820

Hawaiian Goose (Branta sandvicensis) Hawaiian Goose (Branta sandvicensis)

Evolving in the remote Hawaiian Archipelago and having the smallest range of any living goose, the Hawaiian Goose, or better known by its Hawaiian name—Nënë, is among the most isolated, sedentary, and threatened of waterfowl. The Nënë is also highly terrestrial, and several structural features demonstrate its adaptation to life on islands with limited freshwater habitat: It stands taller...
Authors
Paul C. Banko, Jeffrey M. Black, Winston E. Banko

Eleutherodactylus frog introductions to Hawaii Eleutherodactylus frog introductions to Hawaii

As an oceanic archipelago isolated from continental source areas, Hawaii lacks native terrestrial reptiles and amphibians, Polynesians apparently introduced seven gecko and skink species after discovering the islands approximately 1500 years ago, and another 15 reptiles and five frogs have been introduced in the last century and a half (McKeown 1996). The Polynesian introductions are...
Authors
Fred Kraus, Earl W. Campbell, Allen Allison, Thane K. Pratt

Septoria hodgesii sp. nov.: A potential biocontrol agent for Myrica faya in Hawai‘i Septoria hodgesii sp. nov.: A potential biocontrol agent for Myrica faya in Hawai‘i

Septoria hodgesii sp. nov. is described. This fungus is a common leaf pathogen of Myrica cerifera in the southeastern U.S., where it usually has been identified as S. myricae. It also has been shown by artificial inoculation to be pathogenic on M. faya, an introduced forest weed in Hawai'i. Comparison of S. hodgesii with the types of S. myricae, from M. cerifera and S. myricata, from M...
Authors
Donald E. Gardner

Factors related to the recovery of subalpine woodland on Mauna Kea, Hawaii Factors related to the recovery of subalpine woodland on Mauna Kea, Hawaii

We measured mature tree and sapling density, tree associations, crown size, age structure, recovery from ungulate browsing, and grass cover at four study sites in two types of subalpine woodland on Mauna Kea volcano, island of Hawaii. Beginning in 1981, introduced ungulates were reduced in number to allow regeneration of Sophora chrysophylla (mamane) in habitat supporting the endangered...
Authors
Steven C. Hess, Paul C. Banko, Gregory J. Brenner, James D. Jacobi

Estimating transmissivity and storage properties from aquifer tests in the Southern Lihue Basin, Kauai, Hawaii Estimating transmissivity and storage properties from aquifer tests in the Southern Lihue Basin, Kauai, Hawaii

Three to four different analysis methods were applied to the drawdown or recovery data from five constant-rate aquifer tests of 2 to 7 days in length to estimate transmissivity of rocks in the southern Lihue basin, Kauai, Hawaii. The wells penetrate rocks of the Koloa Volcanics and the underlying Waimea Canyon Basalt. Because the wells are located far apart and in previously unexplored...
Authors
Stephen B. Gingerich

Geohydrology and numerical simulation of the ground-water flow system of Kona, Island of Hawaii Geohydrology and numerical simulation of the ground-water flow system of Kona, Island of Hawaii

Prior to the early 1990's, ground-water in the Kona area, which is in the western part of the island of Hawaii, was withdrawn from wells located within about 3 mi from the coast where water levels were less than 10 feet above sea level. In 1990, exploratory drilling in the uplands east of the existing coastal wells first revealed the presence of high water levels (greater than 40 feet...
Authors
Delwyn S. Oki

Ground water and surface water in the Haiku area, East Maui, Hawaii Ground water and surface water in the Haiku area, East Maui, Hawaii

The Haiku study area lies on the gently sloping eastern flank of the East Maui Volcano (Haleakala) between the drainage basins of Maliko Gulch to the west and Kakipi Gulch to the east. The study area lies on the northwest rift zone of East Maui Volcano, a geologic feature 3 to 5 miles wide marked by surface expressions such as cinder, spatter, and pumice cones. The study area contains...
Authors
Stephen B. Gingerich

An autogamous rainforest species of Schiedea (Caryophyllaceae) from East Maui, Hawaiian Islands An autogamous rainforest species of Schiedea (Caryophyllaceae) from East Maui, Hawaiian Islands

A new autogamous species of Schiedea is described and illustrated. It is known only from cliff habitat in rainforest on a single ridge in the Natural Area Reserve, Hanawi, East Maui. With the addition of this species there are 28 species in this endemic Hawaiian genus. The new species appears to be most closely related to Schiedea nuttallii, a species of mesic habitats on O'ahu, Moloka'i...
Authors
W.L. Wagner, S.G. Weller, A.K. Sakai, A.C. Medeiros

Ground-water occurrence and contribution to streamflow, northeast Maui, Hawaii Ground-water occurrence and contribution to streamflow, northeast Maui, Hawaii

The study area lies on the northern flank of theEast Maui Volcano (Haleakala) and covers about129 square miles between the drainage basins ofMaliko Gulch to the west and Makapipi Stream tothe east. About 989 million gallons per day of rain-fall and 176 million gallons per day of fog dripreaches the study area and about 529million gal-lons per day enters the ground-water system asrecharge...
Authors
Stephen B. Gingerich

Hemosporidiosis Hemosporidiosis

Hemosporidia are microscopic, intracellular parasitic protozoans found within the blood cells and tissues of their avian hosts. Three closely related genera, Plasmodium, Haemoproteus, and Leucocytozoon, are commonly found in wild birds. Infections in highly susceptible species and age classes may result in death.
Authors
Carter T. Atkinson

Ground-water resources in Kaloko-Honokohau National Historical Park, Island of Hawaii, and numerical simulation of the effects of ground-water withdrawals Ground-water resources in Kaloko-Honokohau National Historical Park, Island of Hawaii, and numerical simulation of the effects of ground-water withdrawals

Within the Kaloko-Honokohau National Historical Park, which was established in 1978, the ground-water flow system is composed of brackish water overlying saltwater. Ground-water levels measured in the Park range from about 1 to 2 feet above mean sea level, and fluctuate daily by about 0.5 to 1.5 feet in response to ocean tides. The brackish water is formed by mixing of seaward flowing...
Authors
Delwyn S. Oki, Gordon W. Tribble, William R. Souza, Edward L. Bolke

Storage Capacity and Water Quality of Lake Ngardok, Babeldaob Island, Republic of Palau, 1996-98 Storage Capacity and Water Quality of Lake Ngardok, Babeldaob Island, Republic of Palau, 1996-98

A bathymetric survey conducted during March and April, 1996, determined the total storage capacity Lake Ngardok to be between 90 and 168 acre-feet. Elevation-surface area and elevation-capacity curves summarizing the current relations among elevation, surface area, and storage capacity were created from the bathymetric map. Rainfall and lake-elevation data collected from April 1996 to...
Authors
Chiu Wang Yeung, Michael F. Wong
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