Publications
Filter Total Items: 505
Demographic variation, reintroduction, and persistence of an island duck (Anas laysanensis)
Population variation in life history can be important for predicting successful establishment and persistence of reintroduced populations of endangered species. The Laysan duck (Anas laysanensis) is an endangered bird native to the Hawaiian Archipelago that was extirpated from most islands after the introduction of mammalian predators. Laysan ducks were restricted to a single remote island, Laysan
Authors
Michelle H. Reynolds, Emily Weiser, Ian Jamieson, Jeffrey S. Hatfield
Modeling the colonization of Hawaii by hoary bats (Lasiurus cinereus)
The Hawaiian archipelago, the most isolated cluster of islands on Earth, has been colonized successfully twice by bats. The putative “lava tube bat” of Hawaii is extinct, whereas the Hawaiian Hoary Bat, Lasiurus cinereus semotus, survives as an endangered species. We conducted a three-stage analysis to identify conditions under which hoary bats originally colonized Hawaii. We used FLIGHT to determ
Authors
Frank J. Bonaccorso, Liam P. McGuire
A five-year study of Hawaiian hoary bat (Lasiurus cinereus semotus) occupancy on the island of Hawai`i
Using acoustic recordings of the vocalizations of the endangered Hawaiian hoary bat (Lasiurus
cinereus semotus) collected over a five-year period (2007–2011) from 25 survey areas across
the island of Hawai`i, we modeled the relationship between habitat attributes and bat
occurrence. Our data support the conclusion that hoary bats concentrate in the coastal lowlands
of Hawai`i during the breedi
Authors
Marcos P. Gorressen, Frank J. Bonaccorso, Corinna A. Pinzari, Christopher M. Todd, Kristina Montoya-Aiona, Kevin W. Brinck
Rebuilding after collapse: evidence for long-term cohort dynamics in the native Hawaiian rain forest
Questions: Do long-term observations in permanent plots confirm the conceptual model of Metrosideros polymorpha cohort dynamics as postulated in 1987? Do regeneration patterns occur independently of substrate age, i.e. of direct volcanic disturbance impact?
Location: The windward mountain slopes of the younger Mauna Loa and the older Mauna Kea volcanoes (island of Hawaii, USA).
Methods: After wi
Authors
Hans Juergen Boehmer, Helene H. Wagner, James D. Jacobi, Grant C. Gerrish, Dieter Mueller-Dombois
Biology and impacts of Pacific island invasive species 9. Capra hircus, the feral goat, (Mammalia: Bovidae)
Domestic goats, Capra hircus, were intentionally introduced to numerous oceanic islands beginning in the sixteenth century. The remarkable ability of C. hircus to survive in a variety of conditions has enabled this animal to become feral and impact native ecosystems on islands throughout the world. Direct ecological impacts include consumption and trampling of native plants, leading to plant commu
Authors
Mark W. Chynoweth, Creighton M. Litton, Christopher A. Lepczyk, Steve A. Hess, Susan Cordell
ʻŌhiʻa Lehua rainforest: born among Hawaiian volcanoes, evolved in isolation: the story of a dynamic ecosystem with relevance to forests worldwide
In the early 1970s, a multidisciplinary team of forest biologists began a study of Hawaiian ecosystems under the International Biological Program (IBP). Research focus was on the intact native ecosystems in and around Hawai'i Volcanoes National Park, in particular the ʻŌhiʻa Lehua rainforest. Patches of dead ʻŌhiʻa stands had been reported from the windward slopes of Mauna Loa and Mauna Kea. Subse
Authors
Dieter Mueller-Dombois, James D. Jacobi, Hans Juergen Boehmer, Jonathan P. Price
Distribution of invasive ants and methods for their control in Hawai'i Volcanoes National Park
The first invasive ants were detected in Hawai`i Volcanoes National Park (HAVO) more than 80 years ago. Ecological impacts of these ants are largely unknown, but studies in Hawai`i and elsewhere increasingly show that invasive ants can reduce abundance and diversity of native arthropod communities as well as disrupt pollination and food webs. Prior to the present study, knowledge of ant distrib
Authors
Robert W. Peck, Paul C. Banko, Kirsten Snook, Melody Euaparadorn
Population genetic structure of rare and endangered plants using molecular markers
This study was initiated to assess the levels of genetic diversity and differentiation in the remaining populations of Phyllostegia stachyoides and Melicope zahlbruckneri in Hawai`i Volcanoes National Park and determine the extent of gene flow to identify genetically distinct individuals or groups for conservation purposes. Thirty-six Amplified Fragment Length Polymorphic (AFLP) primer combinat
Authors
Jennifer Raji, Carter T. Atkinson
Dynamics of seabird colonies vulnerable to sea-level rise at French Frigate Shoals, Hawai`i
Globally, seabirds are vulnerable to anthropogenic threats both at sea and on land. Seabirds
typically nest colonially and show strong site fidelity; therefore, conservation strategies could
benefit from an understanding of the population dynamics and vulnerability of breeding colonies
to climate change. More than 350 atolls exist across the Pacific Ocean; while they provide
nesting habitat fo
Authors
Michelle H. Reynolds, Karen N. Courtot, Crystal M. Krause, Nathaniel E. Seavy, Paula Hartzell, Jeff S. Hatfield
Climate-associated population declines reverse recovery and threaten future of an iconic high-elevation plant
Although climate change is predicted to place mountain-top and other narrowly endemic species at severe risk of extinction, the ecological processes involved in such extinctions are still poorly resolved. In addition, much of this biodiversity loss will likely go unobserved, and therefore largely unappreciated. The Haleakalā silversword is restricted to a single volcano summit in Hawai‘i, but is a
Authors
Paul D. Krushelnycky, Lloyd L. Loope, Thomas W. Giambelluca, Forest Starr, Kim Starr, Donald R. Drake, Andrew D. Taylor, Robert H. Robichaux
Tamarix as wildlife habitat
No abstract available.
Authors
Heather L. Bateman, Eben H. Paxton, William S. Longland
Abundance and distribution of feral pigs at Hakalau Forest National Wildlife Refuge, 2010-2013
The Hakalau Forest Unit of the Big Island National Wildlife Refuge Complex has intensively managed feral pigs (Sus scrofa) and monitored feral pig presence with surveys of all managed areas since 1988. Results of all available data regarding pig management activities through 2004 were compiled and analyzed, but no further analyses had been conducted since then. The objective of this report was to
Authors
Steven C. Hess, Christina R. Leopold, Steven J. Kendall