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This page last revised 05 January 2009 -- S.M.Gon III
TNC Action Sites
Maps & Figures
Stream communities cut across ecological system boundaries and bear unique threats.
Native-dominated ecological systems comprise our primary conservation targets.
Waterbird concentrations represent special threats and management needs.
Coastal vegetation is highly vulnerable to human disturbance and global warming.
(continued from previous column)
Theremarkably high levels of endemism in the Hawaiian High IslandsEcoregion offers thousands of potential endemic species targets. Luckily, aswith natural communities, most individual species inHawai‘i nest readily within natural communities and ecologicalsystems, and are subject to the same set of threats and managementcontext.Thus, insteadof identifying individual species targets, we recognize that the great majority ofendemic species are nested in and constitute the natural communitiesand ecological systems which have been selected as conservation targets. The plan addressespatterns of species endemism across the archipelago by establishing stratification units reflecting these biogeographical patterns (see Goals).
Most specieswere adequately covered by the focus on ecological systems. However,we felt that delineating threespecies concentrations would ensure assessment of biodiversitycomponents thatwere of particularly outstanding significance (i.e., forest birds), orwere not adequately nested within the native ecological systems.
Weselected concentrations of two major guilds of terrestrial Hawaiianbirds (forest birds and waterbirds) to acknowledge their significanceand special conservation needs. Both groups have been welldocumented by the U.S. Fish and Wildlife Service, and the U.S.Geological Service, Biological Resources Discipline (e.g., Camp et al, in prep). We also analyzedrare plantconcentrations across the archipelago and identified occurrences thatfell outside of native ecological system boundaries.
These14 conservation targets became the basis for all subsequent steps intheterrestrial ecoregion planning process. Their distribution across the ecoregion wasdocumented (see summary table below). Once targets were identified andcharacterized across the ecoregion, assessments of viability wereconducted.
In 2008, a fourth concentration, Sea bird nesting concentration,was added in the coastal assessment to the three terrestrialconcentration targets, and is shown in the coastal target table below.
|Summary table of conservation targets across the Hawaiian Ecoregion. Each blue cellindicates presence of the particular conservation target. Forexample, the Alpine System (ALP) is present only on the islands ofMaui and Hawai‘i, and in the conservation areas of EastMaui, Mauna Kea, Ka‘ū - Kapāpala, Kona, and Pōhakuloa -Pu‘u Wa‘awa‘a. A low island, such as Kaho‘olawe(KAH) only includes occurrences of Lowland Dry (LD) and Dry Cliff(DC) systems. || |
Key to abbreviations: SU =Stratification Unit; ES = Ecological System, NII = Ni‘ihau, KAU =Kaua‘i, OAH = O‘ahu, MOL = Moloka‘i, LAN = Lāna‘i, KAH = Kaho‘olawe,MAU = Maui, HAW = Hawai‘i; Conservation Areas: NII = Ni‘ihau, KAU =Kaua‘i, WAI = Wai‘anae, KOO = Ko‘olau, EMO = East Moloka‘i, LAN = Lāna‘i, KAH = Kaho‘olawe, EMA = East Maui, WMA = West Maui, KOH = Kohala, MK = Mauna Kea, WML = Windward Mauna Loa, K-K = Ka‘ū - Kapāpala, KON = Kona, P-P = Pōhakuloa- Pu‘u Wa‘awa‘a; Targets: ALP = Alpine System, SUB =Subalpine System, MD = Montane Dry System, MM = Montane Mesic System,MW = Montane Wet System, WC = Wet Cliff System, LW = Lowland WetSystem, LM = Lowland Mesic system, LD = Lowland Dry System, DC = DryCliff System; STRM = Hawaiian Continuous Perennial Stream Community,FBIRD = Forest Bird Concentration, PLANT = Rare Plant Concentration,WBIRD = Waterbird Concentration.
|Summarytable of conservation targets selected in the 2008Coastal assessment, and their distribution across the Hawaiianarchipelago. This coastal assessment does not include the Northwestern HawaiianIslands, and does not recognize the same conservation areas as the1998 terrestrial assessment.|| |
Key to abbreviations: NII = Ni‘ihau, KAU =Kaua‘i, OAH = O‘ahu, MOL = Moloka‘i, LAN = Lāna‘i, KAH = Kaho‘olawe,MAU = Maui, HAW = Hawai‘i
Offshore islets are included with their nearest main island.