Order number 940330-160606-96 -001-001 page 46 set 11 with 111 of 111 items About 41 species of birds have been recordéd at Eniwetok. The birds that have arrived there‘have had to be strong fliers. Many of the native seabirds are species that have a vast range in the Pacificregion, and many of them spend only the breeding season on land. At least 12 species are known to breed on the atoll, and at least four other species are thought to nest there. Many other birds probably include Eniwetok within their range. ABSTRACT BIRDS/species diversity ;ENIWETOK/baseline ecology ; KEYWORDS BIRDS; ENIWETOK; POPULATION DYNAMICS; SITE CHARACTERIZATION EDB Item 67 PRIMARY REPORT NUMBER DOE/EV/00703--T1-Vol.1 ANALYTIC TITLE ENGLISH Biology of the rodents of Enewetak Atoll TITLE ENGLISH The natural history of Enewetak Atoll: Volume 1, AUTHOR ANALYTIC PERSONAL AUTHOR CORPORATE TEXT PUB. DATE ABSTRACT (YYMMDD) KEYWORDS ecosystem: Jackson, Devaney, (eds. ) Environments, biotas, and processes The W.B.; Vessey, S$.H.; Bastian, R.K. D.M.; Reese, E.S.; Burch, B.L.; Helfrich, Hawaii Univ. at Manoa, Honolulu (USA) ; P. USDOE Office of Scientific and Technical Information, Oak Ridge, TN 870000 Roof rats and Polynesian rats, introduced to the atoll by 20th Century commerce and the Micronesians, respectively, were present allopatrically on the larger islets. Of necessity, they were largely vegetarians. Reproductive cycles were keyed to rainfall patterns. High density populations had high stress indices, including high parasite loads. The rats, at the top of the terrestrial food pyramid, constituted a bioenvironmental monitor that was rarely utilized during the several test programs. Bioconcentration of radioisotopes, especially {sup 137}Cs and {sup 60}Co, occurred; rats implanted with dosimeters were determined to function as environmental radiation monitors. They hypothesized that roof rats on Enjebi survived the nearby nuclear detonation. Analysis of plasma transferrins indicated greater heterozygosity in the northern atoll rat populations. The incidence of oral palatal ridge deformations also was positively correlated with environmental radiation levels, but other gross indications of radiation effect’ were not found. ENIWETOK/baseline ecology ;RODENTS/biology ; RODENTS/radionuclide kinetics ;BIOLOGICAL INDICATORS; BIOLOGICAL RADIATION EFFECTS;CESIUM 137;COBALT 60; ENIWETOK;FOOD CHAINS;POPULATION DENSITY; RODENTS; BIOLOGY 1003480