Document Details


Title:
RADIOECOLOGY OF SMALL VERTEBRATES OF NEVADA TEST SITE (NTS) AND ROLLER COASTER SITE (TTR)
Author(s):
BRADLEY, W G [UNIVERSITY OF NEVADA, LAS VEGAS]; MOOR, K S [UNIVERSITY OF NEVADA, LAS VEGAS]
Subject Terms:
MAMMALS; CLEAN SLATE I EVENT; AMERICIUM 241; STORAX OPERATION; ISOTOPE RATIO; RESEARCH PROGRAMS; PLUTONIUM 239; BIRDS; DOUBLE TRACKS EVENT; GASTROINTESTINAL TRACT; LIZARDS; ACTIVITY LEVELS; RODENTS; SKIN; CLEAN SLATE II EVENT; DATA
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1974 Sep 15
Declassification Status:
Never classified
Document Pages:
0050
Accession Number:
NV0067707
Originating Research Org.:
UNIVERSITY OF NEVADA, LAS VEGAS
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
ECOLOGICAL STUDIES OF VERTEBRATES IN PLUTONIUM CONTAMINATED AREAS OF N TS WERE INITIATED IN MARCH, 1972 AND HAVE CONTINUED TO DATE. IN SEPTEM BER 1973 STANDARD CENSUS METHODS WERE ALSO EMPLOYED TO DERIVE A QUALIT ATIVE AND QUANTITATIVE INVENTORY OF VERTEBRATE BIOTA OF FOUR NAEG STUD Y AREAS OF TTR. A CHECK LIST OF VERTEBRATES OF NAEG STUDY AREAS OF NTS AND TTR IS PRES ENTED. DATA ARE PRESENTED ON VERTEBRATE COMPOSITION, RELATIVE ABUNDANC E AND SEASONAL STATUS IN THE STUDY AREAS. MORE DETAILED DATA ON RODENT POPULATIONS ARE INCLUDED FOR CLEAN SLATE 2 AND DOUBLE TRACK, TTR AND AREAS 11 AND 13, NTS. FOUR SPECIES OF LIZARDS ARE FOUND IN THE TTR STUDY AREAS. TWO SPECIES OF INSECTIVOROUS LIZARDS AREK COMMON IN ALL TTR STUDY AREAS ( PHYRNOSO MA PLATYRHINOS AND UTA STANSBURIANA ). IN ADDITION THE CARNIVOROUS LIZ ARD, CROTOPHYTUS WISLIZENI OCCURS COMMONLY IN ALL NAEG STUDY AREAS OF NTS AND TTR. A COMPLETE QUANTITAVE AND QUALITATIVE CENSUS OF BIRD POPULATIONS WAS N OT POSSIBLE DURING THE REPORT PERIOD. THE HORNED LARK IS THE ONLY COMM ON TO ABUNDANT RESIDENT IN NAEG STUDY AREAS. THE MORE NORTHERN AREAS O F NTS AND TTR APPEAR TO HAVE A RICH RAPTOR FAUNA WHICH MAY BE UTILIZED FOR ADDITIONAL STUDY IN THE FUTURE. THERE ARE TWO COMMON RODENTS IN STUDY AREAS OF TTR AND ARE BOTH GRANIV ORES. IN ADDITION TWO SPECIES CHARACTERISTIC OF THE GREAT BASIN DESERT WERE FOUND IN CLEAN SLATE 2, MICRODIPODOPS MEGACEPHALUS, FOUND ALSO I N AREA 13, NTS AND DOUBLE TRACK, TTR, AND SPERMOPHILUS TOWNSENDII. AN ADDITIONAL RODENT, PEROMYSCUS MANICULATUS, WAS FOUND IN NTS STUDY AREA S FOR THE FIRST TIME IN THE SPRING OF 1974, PROBABLY THE RESULT OF THE UNUSUALLY WET YEAR OF 1973-1974. CONCENTRATIONS OF PLUTONIUM-239 AND AMERICIUM-241 WERE DETERMINED IN P ELT OR SKIN, GI TRACT AND CARCASS OF 13 LIZARDS AND 16 MAMMALS WHICH W ERE RESIDENTS OF CLEAN SLATE 2, TTR, AND AREA 11, NTS. A TOTAL OF 71 A NIMALS WERE COLLECTED FOR RADIOANALYSIS BUT THE DATA WERE NOT AVAILABL E AT THE TIME THIS REPORT WAS WRITTEN. PLUTONIUM TISSUE BURDENS WERE H IGHEST IN LIZARDS FROM AREA 11 GROUND ZERO. MAXIMUM VALUES OBTAINED IN NCI G/ASH WERE 30.9, 42.2 AND 0.43 FOR THE PELT, GI TRACK AND CARCASS RESPECTIVELY. MAXIMUM PLUTONIUM-239 VALUES IN TISSUES OF SMALL RODENT S FROM AREA 11 ( NOT FROM GROUND ZERO ) WERE 11.4, 6.49 AND 0.20 FOR P ELT, GI TRACT AND CARCASS RESPECTIVELY. PLUTONIUM / AMERICIUM RATIOS W ERE RELATIVELY CONSISTENT IN TISSUE SAMPLES OF LIZARDS AND SMALL MAMMA LS FROM AREA 11 ( APROXIMATELY 6 PLUTONIUM PER EACH AMERICIUM ). PLUTO NIUM / AMERICIUM RATIOS WERE NOT CONSISTENT IN VERTEBRATES OF CLEAN SL ATE 2, TTR AND APPEARED TO BE LOWER IN CARCASS ( 28 PLUTONIUM PER EACH AMERICIUM IN MAMMALS ) THAN GI TRACT ( 9 PLUTONIUM PER AMERICIUM IN M AMMALS ). WHEREAS THE TREND WAS MORE CONSPICUOUS IN MAMMALS IT WAS ALS O EVIDENT IN REPTILES. AVERAGE RELATIVE AMOUNTS ( DISCRIMINATION FACTOR ) OF PLUTONIUM-239 IN GI TRACT AND CARCASS OF SMALL VERTEBRATES WERE IN THE ORDER OF MAGNIT UDE OF 10 SQUARED IN MOST INSTANCES. ALTHOUGH SAMPLE SIZES WERE SMALL ( N=4 ) REPTILES FROM CLEAN SLATE 2 EXHIBITED AN EXTREMELY LOW DISCRIM INATION RATE ( 5.2 ).


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