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Response of the desert shrub Krameria parvifolia after ten years of chronic gamma irradiation

Abstract

A northern Mojave Desert shrub community was irradiated by a /sup 137/Cs source for a ten-year period. Leaf and fruit production, cover, and percent live stem of Krameria parvifolia shrubs were found to respond significantly to a radiation gradient with exposure rates ranging from 0.1 to 10 R/day. Fruit and leaf production were greatly reduced at exposures over 6 R/day. Above 7 R/day 16% of the shrubs were dead compared to 1.2% in a non-irradiated area. Reduced cover, density and live stem values indicate a trend toward a lower status of Krameria in the community at cumulative exposures above 25 kR. Observations indicate that an equilibrium in response to irradiation has not yet occurred. Radiosensitivity of K. parvifolia is attributed in part to its phenology.
Authors:
Vollmer, A T; Bamberg, S A [1] 
  1. California Univ., Los Angeles (USA). Lab. of Nuclear Medicine and Radiation Biology
Publication Date:
Dec 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-07-242179; ERA-02-003970; EDB-76-093726
Resource Relation:
Journal Name: Radiat. Bot.; (United Kingdom); Journal Volume: 15:4
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; PLANT GROWTH; RADIOSENSITIVITY; SHRUBS; CHRONIC IRRADIATION; COMPARATIVE EVALUATIONS; DESERTS; DOSE RATES; DOSE-RESPONSE RELATIONSHIPS; GAMMA RADIATION; PRODUCTIVITY; RADIATION INJURIES; SURVIVAL CURVES; TERRESTRIAL ECOSYSTEMS; ARID LANDS; BIOLOGICAL EFFECTS; BIOLOGICAL RADIATION EFFECTS; BIOMASS; CHRONIC EXPOSURE; ECOSYSTEMS; ELECTROMAGNETIC RADIATION; ENERGY SOURCES; GROWTH; INJURIES; IONIZING RADIATIONS; IRRADIATION; PLANTS; RADIATION EFFECTS; RADIATIONS; RENEWABLE ENERGY SOURCES; 560141* - Radiation Effects on Plants- Basic Studies- (-1987)
OSTI ID:
7263517
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: RABOA
Submitting Site:
INIS
Size:
Pages: 405-409
Announcement Date:

Citation Formats

Vollmer, A T, and Bamberg, S A. Response of the desert shrub Krameria parvifolia after ten years of chronic gamma irradiation. United Kingdom: N. p., 1975. Web. doi:10.1016/0033-7560(75)90013-7.
Vollmer, A T, & Bamberg, S A. Response of the desert shrub Krameria parvifolia after ten years of chronic gamma irradiation. United Kingdom. doi:10.1016/0033-7560(75)90013-7.
Vollmer, A T, and Bamberg, S A. 1975. "Response of the desert shrub Krameria parvifolia after ten years of chronic gamma irradiation." United Kingdom. doi:10.1016/0033-7560(75)90013-7. https://www.osti.gov/servlets/purl/10.1016/0033-7560(75)90013-7.
@misc{etde_7263517,
title = {Response of the desert shrub Krameria parvifolia after ten years of chronic gamma irradiation}
author = {Vollmer, A T, and Bamberg, S A}
abstractNote = {A northern Mojave Desert shrub community was irradiated by a /sup 137/Cs source for a ten-year period. Leaf and fruit production, cover, and percent live stem of Krameria parvifolia shrubs were found to respond significantly to a radiation gradient with exposure rates ranging from 0.1 to 10 R/day. Fruit and leaf production were greatly reduced at exposures over 6 R/day. Above 7 R/day 16% of the shrubs were dead compared to 1.2% in a non-irradiated area. Reduced cover, density and live stem values indicate a trend toward a lower status of Krameria in the community at cumulative exposures above 25 kR. Observations indicate that an equilibrium in response to irradiation has not yet occurred. Radiosensitivity of K. parvifolia is attributed in part to its phenology.}
doi = {10.1016/0033-7560(75)90013-7}
journal = {Radiat. Bot.; (United Kingdom)}
volume = {15:4}
journal type = {AC}
place = {United Kingdom}
year = {1975}
month = {Dec}
}