Pacific Island Ecosystems Research Center

Filter Total Items: 429
Year Published: 2018

Extreme drought alters frequency and reproductive success of floaters in Willow Flycatchers

Changes in habitat quality, including those caused by extreme events like droughts and floods, could alter costs and benefits of territoriality and thereby the prevalence and reproductive consequences for individuals capable of breeding that do not do so (floaters). We studied floating behavior in a population of Southwestern Willow Flycatchers (...

Theimer, Tad; Sogge, Mark K.; Cardinal, Suzanne N.; Durst, Scott L.; Paxton, Eben H.
Theimer, T. C., M. K. Sogge, S. N. Cardinal, S. L. Durst, and E. H. Paxton. 2018. Extreme drought alters frequency and reproductive success of floaters in willow flycatchers. Auk 135:647–656.

Year Published: 2018

Characterization of Plasmodium relictum, a cosmopolitan agent of avian malaria

BackgroundMicroscopic research has shown that Plasmodium relictum is the most common agent of avian malaria. Recent molecular studies confirmed this conclusion and identified several mtDNA lineages, suggesting the existence of significant intra-species genetic variation or cryptic speciation. Most identified lineages have a broad range...

Valkiunas, Gediminas; Ilgūnas, Mikas; Bukauskaitė, Dovilė; Fragner, Karin; Weissenböck, Herbert; Atkinson, Carter T.; Iezhova, Tatjana
Valkiūnas, G., M. Ilgūnas, D. Bukauskaitė, K. Fragner, H. Weissenböck, C. T. Atkinson, and T. A. Iezhova. 2018. Characterization of Plasmodium relictum, a cosmopolitan agent of avian malaria. Malaria Journal 17:184.

Year Published: 2018

Biology and impacts of Pacific Islands invasive species. 14. Sus scrofa the feral pig (Artiodactyla: Suidae)

Feral pigs (Sus scrofa L.) are perhaps the most abundant, widespread, and economically significant large introduced vertebrate across the Pacific island region. Unlike many other nonnative invasive species, feral pigs have both cultural and recreational importance in the region, complicating their management. Today, Pacific island feral pigs...

Wehr, Nathaniel H. ; Hess, Steven C.; Litton, Creighton M.

Year Published: 2018

Potential impacts of projected climate change on vegetation management in Hawai`i Volcanoes National Park

Climate change will likely alter the seasonal and annual patterns of rainfall and temperature in Hawai`i. This is a major concern for resource managers at Hawai`i Volcanoes National Park where intensely managed Special Ecological Areas (SEAs), focal sites for managing rare and endangered plants, may no longer provide suitable habitat under future...

Camp, Richard J.; Loh, Rhonda; Berkowitz, S. Paul; Brinck, Kevin W.; Jacobi, James D.; Price, Jonathan; McDaniel, Sierra; Fortini, Lucas B.
Camp, R. J., R. Loh, P. Berkowitz, K. W. Brinck, J. D. Jacobi, J. Price, S. McDaniel, and L. B. Fortini. 2018. Potential impacts of projected climate change on vegetation management in Hawai‘i Volcanoes National Park. Park Science 34:22–31. Available: https://www.nps.gov/articles/parkscience34-1_22-31_camp_et_al_3875.htm

Year Published: 2018

Population estimates of the Endangered Hawaiʻi ʻĀkepa (Loxops coccineus) in different habitats on windward Mauna Loa

Endangered Hawai‘i ʻĀkepas (Loxops coccineus) are endemic to Hawai‘i island, where they occur in five spatially distinct populations. Data concerning the status and population trends of these unique Hawaiian honeycreepers are crucial for assessing the effectiveness of recovery and management actions. In 2016, we used point‐transect distance...

Judge, Seth W.; Camp, Richard J.; Hart, Patrick J.; Kichman, Scott T.
Judge, S. W., R. J. Camp, P. J. Hart, and S. T. Kichman. 2018. Population estimates of the Endangered Hawaiʻi ʻĀkepa (Loxops coccineus) in different habitats on windward Mauna Loa. Journal of Field Ornithology 89:11–21.

Year Published: 2018

The effect of isolation, fragmentation, and population bottlenecks on song structure of a Hawaiian honeycreeper

Little is known about how important social behaviors such as song vary within and among populations for any of the endemic Hawaiian honeycreepers. Habitat loss and non‐native diseases (e.g., avian malaria) have resulted in isolation and fragmentation of Hawaiian honeycreepers within primarily high elevation forests. In this study, we examined how...

Pang-Ching, Joshua M.; Paxton, Kristina L.; Paxton, Eben H.; Pack, Adam A.; Hart, Patrick J.
Pang‐Ching, J. M., K. L. Paxton, E. H. Paxton, A. A. Pack, and P. J. Hart. 2018. The effect of isolation, fragmentation, and population bottlenecks on song structure of a Hawaiian honeycreeper. Ecology and Evolution 8:2076–2087. Available: https://doi.org/10.1002/ece3.3820

Year Published: 2018

Rapid colonization of a Hawaiian restoration forest by a diverse avian community

Deforestation of tropical forests has led to widespread loss and extirpation of forest bird species around the world, including the Hawaiian Islands which have experienced a dramatic loss of forests over the last 200–800 years. Given the important role birds play in forest ecosystem functions via seed dispersal and pollination, a bird community's...

Paxton, Eben H.; Yelenik, Stephanie G.; Borneman, Tracy E.; Rose, Eli; Camp, Richard J.; Kendall, Steve J.
Paxton, E. H., S. G. Yelenik, T. E. Borneman, E. T. Rose, R. J. Camp, and S. J. Kendall. 2018. Rapid colonization of a Hawaiian restoration forest by a diverse avian community. Restoration Ecology 26:165–173.

Year Published: 2017

Vegetation response of a dry shrubland community to feral goat management on the island of Moloka‘i, Hawai‘i

The Hawaiian Islands are well known for their unique ecosystem assemblages that have a high proportion of endemic flora and fauna. However, since human colonization of this archipelago—starting with the arrival of Polynesian sailors approximately 1,200 years ago, and particularly following western contact in 1778—thousands of non-native species...

Jacobi, James D.; Stock, Jonathan
Jacobi, J.D., and Stock, J., 2017, Vegetation response of a dry shrubland community to feral goat management on the island of Moloka‘i, Hawai‘i: U.S. Geological Survey Scientific Investigations Report 2017–5136, 28 p., https://doi.org/10.3133/sir20175136.

Year Published: 2017

How many Laysan Teal Anas laysanensis are on Midway Atoll? Methods for monitoring abundance after reintroduction

Wildlife managers often request a simple approach to monitor the status of species of concern. In response to that need, we used eight years of monitoring data to estimate population size and test the validity of an index for monitoring accurately the abundance of reintroduced, endangered Laysan Teal Anas laysanensis. The population was...

Reynolds, Michelle H.; Courtot, Karen; Hatfield, Jeffrey
Reynolds, M. H., K. N. Courtot, and J. S. Hatfield. 2017. How many Laysan teal Anas laysanensis are on Midway Atoll? Methods for monitoring abundance after reintroduction. Wildfowl 67:60–71. Available: https://wildfowl.wwt.org.uk/index.php/wildfowl/article/view/2664/1781

Year Published: 2017

Interactions among invasive plants: Lessons from Hawai‘i

Most ecosystems have multiple-plant invaders rather than single-plant invaders, yet ecological studies and management actions focus largely on single invader species. There is a need for general principles regarding invader interactions across varying environmental conditions, so that secondary invasions can be anticipated and managers can...

D'Antonio, Carla M.; Ostertag, Rebecca; Cordell, Susan; Yelenik, Stephanie G.
D’Antonio, C. M., R. Ostertag, S. Cordell, and S. Yelenik. 2017. Interactions among invasive plants: lessons from Hawai‘i. Annual Review of Ecology, Evolution, and Systematics 48:521–541. Available: http://www.annualreviews.org/doi/abs/10.1146/annurev-ecolsys-110316-022620

Year Published: 2017

Feral goats and sheep

No abstract available.

Pitt, William C.; Beasley, James; Witmer, Gary W.; Hess, Steve; Van Vuren, Dirk H.; Witmer, Gary W.
Hess, S. C., D. H. Van Vuren, and G. W. Witmer. 2017. Feral goats and sheep. Pages 287–307 in W. C. Pitt, J. Beasley, and G. W. Witmer, editors. Ecology and Management of Terrestrial Vertebrate Invasive Species in the United States. CRC Press, Boca Raton.

Year Published: 2017

Monitoring Hawaiian biodiversity: Pilot study to assess changes to forest birds and their habitat

Biological diversity, or biodiversity, is the variety and abundance of species in a defined area, and is one of the oldest and most basic descriptions of biological communities. Understanding how populations and communities are structured and change over space and time in response to internal and external forces is a management priority. Effective...

Gorresen, P. Marcos; Camp, Richard J.; Gaudioso, Jacqueline; Brinck, Kevin W.; Berkowitz, Paul; Jacobi, James D.