Indo-Pacific reef islands suggest that freshwater inventory is a function of rainfail and island dimensions. A numerical model (SUTRA) has been used to simulate the responses of atoll island groundwater to changes in recharge (precipitation), sea level, and loss of island area due to flooding. The model has been calibrated for Enjebi Islland, Enewetak Atoll, where a moderately permeable, water-table aquifer overlies a high-permeability formation. Total freshwater inventory is a monotonic but nonlinear function of recharge. If recharge and island area are constant, rising sea level increases the inventory of fresh water by increasing the useful volume of the aquifer above the high-permeability zone. Flooding of land area reduces the total freshwater inventory approximately in proportion to the loss of recharge area. The most significant results of the model simulation, however, are the findings that the inventory of low-salinity water (and by extrapolation, potable water) is disproportionately sensitive to changes in recharge, island dimensions, or recharge. Island freshwater resources may therefore be unexpectedly vulnerable to climate change. Major Descriptors: *CLIMATES -- ENVIRONMENTAL IMPACTS; *GROUND WATER -AVAILABILITY; *ISLANDS -- REEFS; *WATER TABLES -- RESPONSE MODIFYING FACTORS Descriptors: AQUIFERS; ENIWETOK; EVALUATION; MATHEMATICAL MODELS; RAIN; RECHARGE; S CODES Broader Terms: ATMOSPHERIC PRECIPITATIONS; COMPUTER CODES; GEOLOGIC STRUCTURES; HYDROGEN COMPOUNDS; ISLANDS; MARSHALL ISLANDS; MICRONESIA; OCEANIA; OXYGEN COMPOUNDS; WATER Subject Categories: Use Studies -- 510500* (-1989) -- Environment, Terrestrial -- Site Resource & 10/5/393 (Item 93 from file: 103) 02200486 BRA-13-043901; EDB-88-143224 Title: Miscellaneous species records of Enewetak Atoll Author(s): B.L.; Titgen, R.H.; Burch, Helfrich, P. (eds.) B.L.; Devaney, D.M.; Reese, Affiliation: Bernice P. Bishop Museum, Honolulu, HI (USA) Corporate (USA) Title: The natural history of Enewetak Atoll: Volume 2, systematics Source: Hawaii Univ. at Manoa, Scientific and Technical Information, Publication Date: 1987 p 337-343 Report Number(s): DOE/EV/00703-T1-vVol.2 Order Number: DE87006111 Document Type: Analytic of a Report Language: English Journal Announcement: EDB8808 Availability: NTIS, PC A15/MF AOl; Honolulu Oak Ridge, TN E.S.; Burch, Biogeography and USDOE Office of 1. Subfile: ERA (Energy Research Abstracts). JMT (DOE contracton) Country of Origin: United States Country of Publication: United States Abstract: The aim of this report is to provide a checklist of miscellaneous plant and animal species recorded at Eniwetok. The list includes some Subject Categories: 510500* Use Studies -- (-1989) 520500 (-1989) 10/5/394 -- Environment, Terrestrial -- Site Resource & -- Environment, Aquatic -- Site Resource & Use Studies -(Item 94 from file: 02200485 BRA-13-043900; Author (s) : Reese, Title: Mammals of Enewetak Atoll E.S.; 103) EDB-88-143223 Devaney, D.M.; Reese, E.S.; Burch, B.L.; 5003122 fossil material and/or material from drill cores. Major Descriptors: *ANIMALS -- TAXONOMY; *ENIWETOK -- BASELINE ECOLOGY; *PLANTS -- TAXONOMY Descriptors: DRILL CORES; SITE CHARACTERIZATION; SPECIES DIVERSITY Broader Terms: BIOLOGY; ECOLOGY; ISLANDS; MARSHALL ISLANDS; MICRONESIA; OCEANIA