James D. Jacobi

ORCID: 0000-0003-2313-7862
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Research Areas
  • Pacific and Southeast Asian Studies
  • Species Distribution and Climate Change
  • Avian ecology and behavior
  • Ecology and Vegetation Dynamics Studies
  • Rangeland and Wildlife Management
  • Wildlife Ecology and Conservation
  • Animal Ecology and Behavior Studies
  • Plant and animal studies
  • Isotope Analysis in Ecology
  • Fire effects on ecosystems
  • Forest ecology and management
  • Ecology and Conservation Studies
  • Marine and coastal plant biology
  • Animal Behavior and Reproduction
  • Marine animal studies overview
  • Botany, Ecology, and Taxonomy Studies
  • Mediterranean and Iberian flora and fauna
  • Soil erosion and sediment transport
  • Bat Biology and Ecology Studies
  • African Botany and Ecology Studies
  • Bird parasitology and diseases
  • Ecology and biodiversity studies
  • Hydrology and Watershed Management Studies
  • Conservation, Biodiversity, and Resource Management
  • Marine and fisheries research

United States Geological Survey
2013-2024

Pacific Island Ecosystems Research Center
1999-2024

University of Birmingham
2013

Hawaiian Volcano Observatory
2013

United States Fish and Wildlife Service
1982-1994

University of Hawaii System
1988

Journal Article Species Richness: A geographic approach to protecting future biological diversity Get access J. Michael Scott, Scott Search for other works by this author on: Oxford Academic Google Scholar Blair Csuti, Csuti James D. Jacobi, Jacobi John E. Estes BioScience, Volume 37, Issue 11, December 1987, Pages 782–788, https://doi.org/10.2307/1310544 Published: 01 1987

10.2307/1310544 article EN BioScience 1987-12-01

Hawaiian forest birds serve as an ideal group to explore the extent of climate change impacts on at-risk species. Avian malaria constrains many remaining bird species high elevations where temperatures are too cool for malaria's life cycle and its principal mosquito vector. The impact has been a recent focus conservation biology, centered links between avian malaria. To elucidate differential projected shifts with known varying niches, disease resistance tolerance, we use comprehensive...

10.1371/journal.pone.0140389 article EN public-domain PLoS ONE 2015-10-28

This report documents a methodology for projecting the geographic ranges of plant species in Hawaiian Islands. The consists primarily creation several information system (GIS) data layers depicting attributes related to species. most important spatial-data layer generated here is an objectively defined classification climate as it pertains distribution By examining previous zonal-vegetation classifications light spatially detailed data, broad zones relevant contemporary concepts vegetation...

10.3133/ofr20121192 article EN Antarctica A Keystone in a Changing World 2012-01-01

Under the multiple-use paradigm, conflicts may arise when protection of an endangered species must compete with other management objectives. To resolve such a conflict in Critical Habitat Hawaiian honeycreeper, palila (Loxioides bailleui), federal courts ordered eradication introduced ungulates responsible for damaging māmane (Sophora chrysophylla) forest on which depend. During 1980–2011, total 18,130 sheep (Ovis aries and O. gmelini musimon) 310 goats (Capra hircus) were removed from...

10.1657/1938-4246-46.4.871 article EN Arctic Antarctic and Alpine Research 2014-11-01

Abstract Questions Do long‐term observations in permanent plots confirm the conceptual model of M etrosideros polymorpha cohort dynamics as postulated 1987? regeneration patterns occur independently substrate age, i.e. direct volcanic disturbance impact? Location The windward mountain slopes younger auna L oa and older K ea volcanoes (island H awaii, USA ). Methods After widespread forest decline (dieback), were established 1976 13 dieback non‐dieback patches to monitor population structure...

10.1111/jvs.12000 article EN Journal of Vegetation Science 2012-11-27

Abstract We studied the distribution, population size, and habitat response of Palila (Loxioides bailleui) during 1980-1984 nonbreeding seasons to infer factors that limit develop management strategies. Distribution was fairly constant from year year. were confined subalpine woodland on Mauna Kea island Hawaii, occurred between 2,000 2,850 m elevation, reached highest densities southwest slopes. The showed large annual fluctuations, 6,400 birds in 1981 1984. width most important variable...

10.2307/4086892 article EN Ornithology 1984-10-01

Abstract Hawaiian forest birds are imperiled, with fewer than half the original >40 species remaining extant. Recent studies document ongoing rapid population decline and project complete climate‐based range losses for critically endangered Kaua'i endemics ‘akeke’e ( Loxops caeruleirostris ) ‘akikiki Oreomystis bairdi by end‐of‐century due to projected warming. Climate change facilitates upward expansion of avian malaria into native high elevation forests where disease was historically...

10.1002/ece3.3451 article EN cc-by Ecology and Evolution 2017-09-27

ABSTRACT We measured mature tree and sapling density, associations, crown size, age structure, recovery from ungulate browsing, grass cover at four study sites in two types of subalpine woodland on Mauna Kea volcano, island Hawaii. Beginning 1981, introduced ungulates were reduced number to allow regeneration Sophora chrysophylla (mamane) habitat supporting the endangered Hawaiian finch, Loxioides bailleui (palila). found all sites, but was higher mixed species with codominant Myoporum...

10.1111/j.1744-7429.1999.tb00133.x article EN Biotropica 1999-06-01

Abstract Questions (a) Have Metrosideros polymorpha trees become re‐established in Hawaiian forests previously impacted by canopy dieback the 1970s? (b) Has expanded since (c) Can spatial patterns from this be correlated with habitat factors to model future area? Study Site An 83,603 ha study area on eastern slopes of Mauna Loa and Kea volcanoes island Hawaii, USA . Methods We analyzed very‐high‐resolution imagery assess status across side Hawaii. generated 1,170 virtual vegetation plots a...

10.1111/jvs.12704 article EN Journal of Vegetation Science 2018-12-15

A single, relictual population of Palila Loxioides bailleui, a Hawaiian honeycreeper, survives on the slopes Mauna Kea volcano island Hawai'i, where it feeds principally flowers and green seeds mamane tree Sophora chrysophylla. The was listed as an endangered species by state federal governments because continuing damage to its habitat browsing Feral Mouflon Sheep Ovis aries O. musimon Goats Capra hircus bird's restricted range low numbers. Ecology studied from 1987 1996. Annual estimates...

10.1071/pc980330 article EN Pacific Conservation Biology 1997-01-01
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