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Filter Total Items: 493
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Year Published: 2007

Current and potential ant impacts in the Pacific region

Worldwide, ants are a powerful ecological force, and they appear to be dominant components of animal communities of many tropical and temperate ecosystems in terms of biomass and numbers of individuals (Bluthgen et al. 2000). For example, ants comprise up to 94% of arthropod individuals in fogging samples taken from diverse lowland tropical...

Loope, Lloyd L.; Krushelnycky, Paul D.

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Year Published: 2007

Hawaiian Duck's Future Threatened by Feral Mallards

Nearly 70 percent of Hawaii's native bird species are found nowhere else on Earth, and many of these species are declining or in danger of extinction. Although the Hawaiian Islands were once home to a remarkable diversity of waterfowl, only three species remain-the Hawaiian Goose (Nene), Laysan Duck, and Hawaiian Duck (Koloa maoli)-all Federally...

Uyehara, Kimberly J.; Engilis, Andrew; Reynolds, Michelle
Hawaiian Duck's Future Threatened by Feral Mallards; 2007; FS; 2007-3047; Uyehara, Kimberly J.; Engilis, Andrew, Jr.; Reynolds, Michelle

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Year Published: 2007

Water Use in Wetland Kalo Cultivation in Hawai`i

Ten cultivation areas (8 windward, 2 leeward) were selected for a kalo water-use study, primarily on the basis of the diversity of environmental and agricultural conditions under which wetland kalo is grown and landowner permission and availability. Flow and water-temperature data were collected at the lo`i complex level and at the individual lo`i...

Gingerich, Stephen B.; Yeung, Chiu W.; Ibarra, Tracy-Joy N.; Engott, John A.
Water Use in Wetland Kalo Cultivation in Hawai`i; 2007; OFR; 2007-1157; Gingerich, Stephen B.; Yeung, Chiu W.; Ibarra, Tracy-Joy N.; Engott, John A.

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Year Published: 2007

Reconnaissance Study of the Hydrology of American Memorial Park, Island of Saipan, Commonwealth of the Northern Mariana Islands

American Memorial Park, a unit of the National Park Service on the Island of Saipan, includes among its features a 27-acre estuarine system that has become a rarity within the Commonwealth of the Northern Mariana Islands. The estuarine system's mosaic of marshy areas interspersed with emergent wetlands and mixed wet forests provides critical...

Perreault, Jeff A.
Reconnaissance Study of the Hydrology of American Memorial Park, Island of Saipan, Commonwealth of the Northern Mariana Islands; 2007; SIR; 2007-5042; Perreault, Jeff A.

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Year Published: 2007

Ground-Water Nutrient Flux to Coastal Waters and Numerical Simulation of Wastewater Injection at Kihei, Maui, Hawaii

Water sampling and numerical modeling were used to estimate ground-water nutrient fluxes in the Kihei area of Maui, where growth of macroalgae (seaweed) on coral reefs raises ecologic concerns and accumulation on beaches has caused odor and removal problems. Fluxes and model results are highly approximate, first-order estimates because very few...

Hunt, Charles D.
Ground-Water Nutrient Flux to Coastal Waters and Numerical Simulation of Wastewater Injection at Kihei, Maui, Hawaii; 2007; SIR; 2006-5283; Hunt, Charles D., Jr.

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Year Published: 2007

Infectious Diseases of Wild Birds

Thomas, N.J.; Hunter, D.Bruce; Atkinson, C.T.
Infectious Diseases of Wild Birds; 2007; Book; Thomas, N. J.; Hunter, D. B.; Atkinson, C. T.

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Year Published: 2006

Genetic analyses of captive Alala (Corvus hawaiiensis) using AFLP analyses

Population level studies of genetic diversity can provide information about population structure, individual genetic distinctiveness and former population size. They are especially important for rare and threatened species like the Alala, where they can be used to assess extinction risks and evolutionary potential. In an ideal situation multiple...

Jarvi, Susan I.; Bianchi, Kiara R.
Genetic analyses of captive Alala (Corvus hawaiiensis) using AFLP analyses; 2006; OFR; 2006-1349; Jarvi, Susan I.; Bianchi, Kiara R.

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Year Published: 2006

Water Resources Data: Hawaii and Other Pacific Areas, Water Year 2005. Volume 1. Hawaii

Water resources data for the 2005 water year for Hawaii consist of records of stage, discharge, and water quality of streams and springs; water levels and quality of water wells; and rainfall totals. * Water discharge for 59 gaging stations on streams, springs, and ditches. * Water-quality data for 6 streams. * Water levels for 80 observation...

Fontaine, Richard A.
Water Resources Data: Hawaii and Other Pacific Areas, Water Year 2005. Volume 1. Hawaii; 2006; WDR; HI-05-1; Fontaine, Richard A.

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Year Published: 2006

Hydratools manual version 1.0, documentation for a MATLAB®-based post-processing package for the Sontek Hydra

The Sediment Transport Instrumentation Group (STG) at the U.S. Geological Survey (USGS) Woods Hole Science Center has a long-standing comitment to providing scientists with high quality oceanographic data. To meet this commitment, STG personnel are vigilant in checking data as well as hardware for signs of instrument malfunction. STG data sets are...

Martini, Marinna A.; Sherwood, Chris; Horwitz, Rachel; Ramsey, Andree; Lightsom, Fran; Lacy, Jessie; Xu, Jingping
Hydratools manual version 1.0, documentation for a MATLAB®-based post-processing package for the Sontek Hydra; 2006; OFR; 2005-1026; Martini, Marinna; Sherwood, Chris; Horwitz, Rachel; Ramsey, Andree; Lightsom, Fran; Lacy, Jessie; Xu, Jingping

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Year Published: 2006

Efficacy of feral pig removals at Hakalau Forest National Wildlife Refuge

We compiled and analyzed data from 1987–2004 on feral pig (Sus scrofa) management and monitoring activities at Hakalau Forest National Wildlife Refuge, a tropical montane rainforest on the island of Hawai`i. These data included annual surveys of feral pig and cattle (Bos taurus) activity, the number of feral ungulates removed from closed...

Hess, Steven C.; Jeffrey, John J.; Ball, Donna; Babich, Lev

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Year Published: 2006

Long-term population monitoring: Lessons learned from an endangered passerine in Hawai‘i

Obtaining reliable population estimates is crucial to monitoring endangered species and developing recovery strategies. The palila (Loxioides bailleui) is an endangered seed-eating Hawaiian honeycreeper restricted to the subalpine forests of Mauna Kea, a volcano on the island of Hawai‘i, USA. The species is vulnerable to extinction primarily...

Johnson, Luanne; Camp, Richard J.; Brinck, Kevin W.; Banko, Paul C.

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Year Published: 2006

Final integrated trip report: site visits to Area 50, Andersen Air Force Base, Guam National Wildlife Refuge, War in the Pacific National Historical Park, Guam, Rota and Saipan, CNMI, 2004-2005

Limestone forests are the most diverse natural plant communities of Guam. Like other natural vegetation types, these forests have a long history of anthropogenic disturbances, being altered and shaped by humans for more than 4,000 years. Although this occupation represents a relatively long human influence in comparison to other Pacific islands,...

Hess, Steven C.; Pratt, Linda W.
Final integrated trip report: site visits to Area 50, Andersen Air Force Base, Guam National Wildlife Refuge, War in the Pacific National Historical Park, Guam, Rota and Saipan, CNMI, 2004-2005; 2006; OFR; 2005-1299; Hess, Steven C.; Pratt, Linda W.

Our scientists in the Northwest Region conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens of the Northwest states of Idaho, Montana, Oregon, Washington, and Wyoming.