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Filter Total Items: 493
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Year Published: 2015

Baseline water-quality sampling to infer nutrient and contaminant sources at Kaloko-Honokōhau National Historical Park, Island of Hawai‘i, 2009

Baseline water-quality sampling was conducted for dissolved nutrients and for chemical and isotopic tracers at Kaloko-Honokōhau National Historical Park on the Island of Hawai'i. Existing and future urbanization in the surrounding areas have the potential to affect water quality in the Park, and so the National Park Service and the U.S. Geological...

Hunt, Charles D.
Hunt, C.D., Jr., 2014, Baseline water-quality sampling to infer nutrient and contaminant sources at Kaloko-Honokōhau National Historical Park, Island of Hawai‘i, 2009: U.S. Geological Survey Scientific Investigations Report 2014-5158, 52 p., http://dx.doi.org/10.3133/sir20145158.

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Year Published: 2015

Anatomy of an eradication effort: Removing Hawaii's illegally introduced axis deer

In February 2011, a rancher in the rural southern part of Hawaii Island reported a large mammal on her land. Her call mobilized several agencies led by the Big Island Invasive Species Committee (BIISC), a partnership to prevent, detect, and control the establishment and spread of invasive species, to sit up and take notice. Agency biologists...

Hess, Steven C.; Muise, Jake; Schipper, Jan

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Year Published: 2015

Microsatellite variation and rare alleles in a bottlenecked Hawaiian Islands endemic: implications for reintroductions

Conservation of genetic biodiversity in endangered wildlife populations is an important challenge to address since the loss of alleles and genetic drift may influence future adaptability. Reintroduction aims to re-establish species to restored or protected ecosystems; however, moving a subset of individuals may result in loss of gene variants...

Reynolds, Michelle H.; Pearce, John M.; Lavretsky, Philip; Seixas, Pedro P.; Courtot, Karen
Reynolds, M.H., J.M. Pearce, P. Lavretsky, P.P. Seixas, & K.N. Courtot. 2015. Microsatellite variation and rare alleles in a bottlenecked Hawaiian Islands endemic: implications for reintroductions. Endangered Species Research. 28: 117-122.

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Year Published: 2015

An assessment of arthropod prey resources at Nakula Natural Area Reserve, a potential site of reintroduction for Kiwikiu (Pseudonestor xanthophrys) and Maui `Alauahio (Parareomyza montana).

Hawaiian forest birds have declined dramatically since humans arrived in the archipelago. Birds from all foraging guilds have been affected but insectivorous species are currently at greatest risk of extinction. On the island of Maui, populations and ranges of the insectivorous kiwikiu (Maui parrotbill; Pseudonestor xanthophrys) and Maui ‘...

Banko, Paul C.; Peck, Robert W.; Cappadonna, Justin; Steele, Claire; Leonard, David L.; Mounce, Hanna L.; Becker, Dusti; Swinnerton, Kirsty
Peck, R.W., P.C. Banko, J. Cappadonna, C. Steele, D.L. Leonard, H.L. Mounce, C.D. Becker, and K. Swinnerton. 2015. An assessment of arthropod prey resources at Nakula Natural Area Reserve, a potential site of reintroduction for Kiwikiu (Pseudonestor xanthophrys) and Maui `Alauahio (Parareomyza montana). Hawaii Cooperative Studies Unit Technical Report. TR HCSU-0059, 43 pp.

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Year Published: 2015

Ants of the national park of American Samoa

American Samoa makes up the eastern end of the Samoan Archipelago. On the islands of Tutuila, Taʽū and Ofu, the National Park of American Samoa (NPSA) protects about 4,000 ha of coastal, mid-slope and ridge-top forest. While the ant fauna of the Samoan Archipelago is considered relatively well documented, much of NPSA has never been surveyed for...

Banko, Paul C.; Peck, Robert W.
Peck, R.W. and P.C. Banko. 2015. Ants of the National Park of American Samoa. Hawaii Cooperative Studies Unit Technical Report. TR HCSU-0061. University of Hawaii at Hilo, 46 pp.

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Year Published: 2015

Evaluating nurse plants for restoring native woody species to degraded subtropical woodlands

Harsh habitats dominated by invasive species are difficult to restore. Invasive grasses in arid environments slow succession toward more desired composition, yet grass removal exacerbates high light and temperature, making the use of “nurse plants” an appealing strategy. In this study of degraded subtropical woodlands dominated by...

Yelenik, Stephanie G.; DiManno, Nicole; D’Antonio, Carla M.
Yelenik, S.G., DiManno, N., and D’Antonio, C.M. 2015. Evaluating nurse plants for restoring native woody species to degraded subtropical woodlands.  Ecology and Evolution.  doi: 10.1002/ece3.1294

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Year Published: 2015

Palila Restoration Research, 1996−2012. Summary and management implications

The Palila Restoration Project was initiated in 1996 by the U.S. Geological Survey to assist government agencies mitigate the effects of realigning Saddle Road (Highway 200) through Palila Critical Habitat (U.S. Fish and Wildlife Service 1998, Federal Highway Administration 1999). Ecological research on the palila (Loxioides bailleui), an...

Banko, Paul C.; Farmer, Chris; Dougill, Steve; Johnson, Luanne
Banko, P.C. and C. Farmer, eds. 2014. Palila restoration research, 1996-2012: Summary and management implications. Hawai`i Cooperative Studies Unit Technical Report. TR HSCU-046A. University of Hawai`i at Hilo, 70 pp

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Year Published: 2015

The economic viability of smallholder timber production under expanding açaí palm production in the Amazon Estuary

Relatively little attention has been paid to the economic potentials and limitations of tropical timber production and management at smallholder scales, with the most relevant research focusing on community forestry efforts. As a rare tropical example of long-lasting small-scale timber production, in this study we explore the economics of...

Fortini, Lucas B.; Douglas R. Carter
Fortini, L.B. and D.R. Carter. 2014. The economic viability of smallholder timber production under expanding açaí palm production in the Amazon Estuary. Journal of Forest Economics, 20: 223–235.

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Year Published: 2015

Evidence of low genetic variation and rare alleles in a bottlenecked endangered island endemic, the Lasan Teal (Anas laysanensis)

Genetic diversity is assumed to reflect the evolutionary potential and adaptability of populations, and thus quantifying the genetic diversity of endangered species is useful for recovery programs. In particular, if conservation strategies include reintroductions, periodic genetic assessments are useful to evaluate whether management efforts have...

Reynolds, Michelle H.; Pearce, John M.; Lavretsky, Philip; Peters Jeffrey L; Courtot, Karen; Seixas, Pedro P.
Reynolds, M.H., J.M. Pearce, P. Lavretsky, J.L. Peters, K.N. Courtot, and P. P. Seixas. 2015. Evidence of low genetic variation and rare alleles in a bottlenecked endangered island endemic, the Lasan Teal (Anas laysanensis).

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Year Published: 2015

Proceedings of the International Miconia Conference

This proceedings is a compilation of 15 of the 27 papers and posters that were presented at the 2009 International Miconia Conference. The Conference was held in Keanae Hawaii May 4th to 7th 2009, hosted by the Maui Invasive Species Committee. *No official abstract was available for the proceedings...K. Keck

Loope, L.L.; Meyer, J.-Y.; Hardesty, B. D.; Smith, C.W.
Loope, L.L., J.-Y. Meyer, B.D. Hardesty and C.W. Smith (eds.), Proceedings of the International Miconia Conference, Keanae, Maui, Hawaii, May 4-7, 2009, Maui Invasive Species Committee and Pacific Cooperative Studies Unit, University of Hawaii at Manoa.

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Year Published: 2014

Terrestrial bird population trends on Aguiguan (Goat Island), Mariana Islands

The island of Aguiguan is part of the Mariana archipelago and currently supports populations of four endemic species, including one endemic genus, Cleptornis. Bird population trends since 1982 were recently assessed on the neighbouring islands of Saipan, Tinian, and Rota indicating declines in some native species. Point-transect surveys were...

Amidon, Fred; Camp, Richard J.; Marshall, Ann P.; Pratt, Thane K.; Williams, Laura; Radley, Paul; Cruz, Justine B.
FRED AMIDON, RICHARD J. CAMP, ANN P. MARSHALL, THANE K. PRATT, LAURA WILLIAMS, PAUL RADLEY and JUSTINE B. CRUZ (2014). Terrestrial bird population trends on Aguiguan (Goat Island), Mariana Islands. Bird Conservation International, 24, pp 505-517. doi:10.1017/S0959270914000021.

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Year Published: 2014

Arthropods of Rose Atoll with special reference to ants and Pulvinaria Urbicola Scales (Hempitera Coccidae) on Pisonia Grandis trees

Rose Atoll, at the eastern end of the Samoan Archipelago, is a small but important refuge for seabirds, shorebirds, and sea turtles. While the vertebrate community is relatively well-studied, the terrestrial arthropod fauna, and its role in ecosystem function, are poorly known. Arthropods may be influencing the decline of Pisonia grandis, an...

Banko, Paul C.; Peck, Robert W.; Pendleton, Frank; Schmaedick, Mark; Ernsberger, Kelsie
Peck, R.W., P. Banko, F. Pendleton, M. Schmaedick, and K. Ernsberger. 2014. Arthropods of Rose Atoll with special reference to ants and Pulvinaria urbicola scales (Hemiptera: Coccidae) on Pisonia grandis trees. Hawaii Cooperative Studies Unit Technical Report. TR HCSU-0057, 25 pp.

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.

Filter Total Items: 301
August 5, 2015

D2 East Transect – 2015

Permanent Site: D2 East Transect; Depth: 12.1 Meters (39.8 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15233001,-123.56829403; Site Description: This site is right off the mouth of the river. Substrate is mainly gravel. This year lots of dead clam shells (0:40, 1:03 seconds) are scattered along

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July 25, 2015

J1 East Transect – 2015

Permanent Site: J1 East Transect; Depth: 9.4 Meters (30.8 Feet); Distance from river mouth: 6.7 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.13607725,-123.47935008; Site Description: This site is medium depth. Substrates is mainly a gravel/sand mixture. Seaweed density has increased. Seven species of brown seaweed were recorded

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July 25, 2015

J1 West Transect – 2015

Permanent Site: J1 West Transect; Depth: 9.2 Meters (30.2 Feet); Distance from river mouth: 6.6 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.13607725,-123.48002186; Site Description: Visibility was bad on this date and video is of poor quality. This site is medium depth. Substrates is mainly a gravel/sand mixture with some

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July 24, 2015

H2 West Transect – 2015

Permanent Site: H2 West Transect; Depth: 7.7 Meters (25.2 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15008216,-123.53277857; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam

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July 24, 2015

F1 East Transect – 2015 - YouTube

Permanent Site: F1 East Transect; Depth: 6.3 Meters (20.7 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15292999, -123.55011402; Site Description: This is a shallow site. Substrate is still mainly sand but some cobble is present (2:15, 2:27 seconds). The brown acid kelp Desmarestia spp. has

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July 24, 2015

F1 West Transect – 2015

Permanent Site: F1 West Transect; Depth: 6.6 Meters (21.7 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15292999, -123.55078602; Site Description: The video is of poor quality. This is a shallow site. Substrate is still mainly sand with an occasional cobble. Woody debris is present (0:39 

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July 24, 2015

H2 East Transect – 2015

Permanent Site: H2 East Transect; Depth: 8.1 Meters (26.7 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam

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July 24, 2015

4SP1 East Transect – 2015

Permanent Site: 4SP1 - East Transect; Depth: 5.5 Meters (17.9 Feet); Distance from river mouth: 0.8 Kilometers (0.5 Miles) East; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15257, -123.556704; Site Description: The site has converted from gravel/cobble substrate to all sand. Seaweed is completely absent. 
 

July 22, 2015

E2 East Transect – 2015

Permanent Site: E2 East Transect; Depth: 14.8 Meters (48.5 Feet); Distance from river mouth: 0.9 Kilometers (0.5 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15653002,-123.56130401; Site Description: This is one of our deeper sites. Substrate is mainly gravel/cobble with an occasional boulder. A lot of shell debris was present this year (1:12 

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July 22, 2015

C1 East Transect – 2015

Permanent Site: C1 East Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.14525225,-123.57294101; Site Description: Substrate is entirely sand. All seaweeds are absent. Woody debris is present (1:36, 2:20 seconds). Invertebrates are scarce and are almost exclusively the ornate

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July 22, 2015

E2 West Transect – 2015

Permanent Site: E2 West Transect; Depth: 14.8 Meters (48.7 Feet); Distance from river mouth: 0.9 Kilometers (0.5 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15653002, -123.56197605; Site Description: This is one of our deeper sites. Substrate is mainly gravel/cobble with scattered boulders. Visibility was very poor when this video was taken. A

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July 22, 2015

C1 West Transect – 2015

Permanent Site: C1 West Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.14525225,-123.57361291; Site Description: Substrate is entirely sand. All seaweeds are absent. Woody debris is present (0:06 seconds). Invertebrates are scarce and are almost exclusively the ornate

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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.