Pacific Island Ecosystems Research Center

Publications

Filter Total Items: 461
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Year Published: 2019

Environmental gradients influence differences in leaf functional traits between native and non-native plants

Determining the characteristics of non-native plants that can successfully establish and spread is central to pressing questions in invasion ecology. Evidence suggests that some non-native species establish and spread in new environments because they possess characteristics (functional traits) that allow them to either successfully compete with...

Henn, Jonathan J; Yelenik, Stephanie G.; Damschen, Ellen Ingman

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Year Published: 2019

Screening and biosecurity for White-nose Fungus Pseudogymnoascus destructans (Ascomycota: Pseudeurotiaceae) in Hawai‘i

Introduced pathogens causing emerging infectious diseases (EIDs) are serious contemporary threats to animal, plant, and ecosystem health. The invasive fungus, Pseudogymnoascus destructans, has established populations of European origin in North America, resulting in mass mortality of several hibernating bat species. Extensive monitoring for...

Zhelyazkova, Violeta; Toshkova, Nia; Dool, Serena E; Bonaccorso, Frank; Pinzari, Corinna A.; Montoya-Aiona, Kristina; Puechmaille, Sebastien J

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Year Published: 2019

Hawaiian hoary bat (Lasiurus cinereus semotus) activity, diet and prey availability at the Waihou Mitigation Area, Maui

Habitat use, diet, prey availability, and foraging ecology of the endangered Hawaiian hoary bat (Lasiurus cinereus semotus, Vespertilionidae), was examined in the east Maui region inclusive of the Waihou Mitigation Area, Pu‘u Makua Restoration Area and the wind energy facility operated by Auwahi Wind Energy, LLC. The study was conducted to inform...

Pinzari, Corinna A.; Peck, Robert W; Zinn, Terry; Gross, Danielle; Montoya-Aiona, Kristina; Brinck, Kevin W.; Gorresen, Paulo Marcos; Bonaccorso, Frank J

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Year Published: 2019

The evolving threat of rapid Ohia death (ROD) to Hawaii’s native ecosystems and rare plant species

Hawai‘i’s most widespread native tree, ‘ōhi‘a lehua (Metrosideros polymorpha), has been dying across large areas of Hawai‘i Island mainly due to two fungal pathogens (Ceratocystis lukuohia and Ceratocystis huliohia) that cause a disease collectively known as Rapid ‘Ōhi‘a Death (ROD). Here we examine patterns of positive detections of...

Fortini, Lucas B.; Kaiser, Lauren R.; Keith, Lisa; Price, Jonathan; Hughes, R. Flint; Jacobi, James D.; Friday, J. B.

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Year Published: 2019

Facilitating adaptation to climate change while restoring a montane plant community

Montane plant communities throughout the world have responded to changes in temperature regimes by shifting ranges upward in elevation, and made downslope movements to track shifts in climatic water balance. Organisms that cannot disperse or adapt biologically to projected climate scenarios in situ may decrease in distributional range and...

Leopold, Christina; Hess, Steve C.

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Year Published: 2019

Evaluating community-level response to management actions across a diverse Hawaiian forest bird community

Although species‐specific approaches are necessary to understand the dynamics of individual species composing a community, they do not offer a framework for making optimal management decisions at the community level. Here, we present a simple framework for comparing the response of entire communities to multiple management scenarios. Our approach...

Guillaumet, Alban; Paxton, Eben H.

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Year Published: 2019

Hawaiian hoary bat (Lasiurus cinereus semotus) activity and prey availability at Kaloko-Honokohau National Historical Park

We examined habitat use and foraging activity of the endangered Hawaiian hoary bat (Lasiurus cinereus semotus), as well as nocturnal aerial insect abundance at Kaloko-Honōkohau National Historical Park located in the coastal region of Kailua-Kona, Hawai‘i Island. We evaluated bat activity in two habitat types, wooded shorelines beside brackish...

Montoya-Aiona, Kristina; Pinzari, Corinna A.; Bonaccorso, Frank J
Montoya-Aiona, K., C. A. Pinzari, and F. J. Bonaccorso. 2019. Hawaiian hoary bat (Lasiurus cinereus semotus) activity and prey availability at Kaloko-Honōkohau National Historical Park. Hawai`i Cooperative Studies Unit Technical Report HCSU-TR088, University of Hawai'i at Hilo, Hilo, Hawai‘i. Available: http://hdl.handle.net/10790/4598.

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Year Published: 2019

Bryophyte abundance, composition and importance to woody plant recruitment in natural and restoration forests

Restoration of tropical forests can lead to enhanced ecosystem services and increases in native biodiversity. Bryophytes may be an integral part of the forest restoration process and can serve a critical role in forest functioning. However, the recovery of bryophytes and their ability to facilitate woody plant establishment during restoration...

Rehm, Evan M; Thomas, Miles K; Yelenik, Stephanie G.; Bouck, Dave L; D'Antonio, Carla M.

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Year Published: 2019

Seasonality and prevalence of pollen collected from Hawaiian nectarivorous birds

Hawaiian nectarivorous forest birds play a vital ecological role as pollinators in Hawaiian ecosystems. However, little is known about what nectar resources are utilized by Hawai‘i’s nectarivorous birds, how seasonality influences nectar availability, and how nectar preference differs by bird species. We sampled pollen from the heads of ‘i‘iwi (...

van Dyk, Kathryn; Paxton, Kristina L.; Hart, Patrick J.; Paxton, Eben H.

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Year Published: 2019

Regeneration of Metrosideros polymorpha forests in Hawaii after landscape‐level canopy dieback

Questions(a) Have Metrosideros polymorpha trees become re‐established in Hawaiian forests previously impacted by canopy dieback in the 1970s? (b) Has canopy dieback expanded since the 1970s? (c) Can spatial patterns from this dieback be correlated with habitat factors to model future dieback in this area?Study SiteAn 83,603 ha study...

Mertelmeyer, Linda; Jacobi, James D.; Mueller-Dombois, Dieter; Brinck, Kevin W.; Boehmer, Hans Juergen

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Year Published: 2019

Economical environmental sampler designs for detecting airborn spread of fungi responsible for rapid `Ōhi` death

We designed two new samplers for monitoring airborne particulates that rely on either natural wind currents (Passive Environmental Sampler) or a battery-operated fan (Active Environmental Sampler). Both samplers are significantly less expensive than commercial devices such as Rotorod® and Burkard Samplers that are used in the agricultural and...

Atkinson, Carter T.; Roy, Kylle; Granthon, Carolina

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Year Published: 2019

The epidemiology of avian pox and interaction with avian malaria in Hawaiian forest birds

Despite the purported role of avian pox (Avipoxvirus spp.) in the decline of endemic Hawaiian birds, few studies have been conducted on the dynamics of this disease, its impact on free‐living avian populations, or its interactions with avian malaria (Plasmodium relictum). We conducted four longitudinal studies of 3–7 yr in length and...

Samuel, Michael; Woodworth, Bethany L.; Atkinson, Carter T.; Hart, Patrick J.; Lapointe, Dennis