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Effect of acute. gamma. irradiation on phytocenoses (of grasslands and planktonic)

Abstract

The effects of acute ..gamma.. irradiation on two models of phytocenoses - natural polyphytic grasslands and freshwater phytoplankton communities developed in artificial cultures - have been studied. A retardation of the successional process and a simplification of community structure was observed. This included a reduction in biomass and degree of complexity. A selection favouring weeds and other species which are usually present in young successional stages was also apparent. To a large extent, the overall effects of ..gamma..-radiation depended upon the degree of ecological stability and maturity. Radiation-induced disturbances seemed to be buffered in advanced successional stages. The model of response to ..gamma..- radiation was similar to that produced by other factors of ecological exploitation or perturbation. Synecological parameters such as diversity, similarity and stability were also studied for acute phytocenoses. Low radiation levels produced some clear stimulation effects, the possible significance of which is discussed.
Authors:
Hernandez-Bermejo, J E [1] 
  1. Universidad Politecnica de Madrid (Spain). Departamento de Biologia y Fisiologia Vegetal de la Escuela T.S. de Ingenieros Agronomos
Publication Date:
Apr 01, 1977
Product Type:
Journal Article
Reference Number:
AIX-08-321416; EDB-77-115337
Resource Relation:
Journal Name: Environ. Exp. Bot.; (United Kingdom); Journal Volume: 17:1
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; GRAMINEAE; BIOLOGICAL RADIATION EFFECTS; PHYTOPLANKTON; ACUTE IRRADIATION; AQUATIC ECOSYSTEMS; BIOMASS; ECOLOGY; ENVIRONMENT; GAMMA RADIATION; POPULATION DYNAMICS; TERRESTRIAL ECOSYSTEMS; WEEDS; ACUTE EXPOSURE; AQUATIC ORGANISMS; BIOLOGICAL EFFECTS; ECOSYSTEMS; ELECTROMAGNETIC RADIATION; ENERGY SOURCES; IONIZING RADIATIONS; IRRADIATION; PLANKTON; PLANTS; RADIATION EFFECTS; RADIATIONS; RENEWABLE ENERGY SOURCES; 560141* - Radiation Effects on Plants- Basic Studies- (-1987); 560131 - Radiation Effects on Microorganisms- Basic Studies- (-1987)
OSTI ID:
7254613
Country of Origin:
United Kingdom
Language:
French
Other Identifying Numbers:
Journal ID: CODEN: EEBOD
Submitting Site:
INIS
Size:
Pages: 87-97
Announcement Date:

Citation Formats

Hernandez-Bermejo, J E. Effect of acute. gamma. irradiation on phytocenoses (of grasslands and planktonic). United Kingdom: N. p., 1977. Web. doi:10.1016/0098-8472(77)90025-9.
Hernandez-Bermejo, J E. Effect of acute. gamma. irradiation on phytocenoses (of grasslands and planktonic). United Kingdom. doi:10.1016/0098-8472(77)90025-9.
Hernandez-Bermejo, J E. 1977. "Effect of acute. gamma. irradiation on phytocenoses (of grasslands and planktonic)." United Kingdom. doi:10.1016/0098-8472(77)90025-9. https://www.osti.gov/servlets/purl/10.1016/0098-8472(77)90025-9.
@misc{etde_7254613,
title = {Effect of acute. gamma. irradiation on phytocenoses (of grasslands and planktonic)}
author = {Hernandez-Bermejo, J E}
abstractNote = {The effects of acute ..gamma.. irradiation on two models of phytocenoses - natural polyphytic grasslands and freshwater phytoplankton communities developed in artificial cultures - have been studied. A retardation of the successional process and a simplification of community structure was observed. This included a reduction in biomass and degree of complexity. A selection favouring weeds and other species which are usually present in young successional stages was also apparent. To a large extent, the overall effects of ..gamma..-radiation depended upon the degree of ecological stability and maturity. Radiation-induced disturbances seemed to be buffered in advanced successional stages. The model of response to ..gamma..- radiation was similar to that produced by other factors of ecological exploitation or perturbation. Synecological parameters such as diversity, similarity and stability were also studied for acute phytocenoses. Low radiation levels produced some clear stimulation effects, the possible significance of which is discussed.}
doi = {10.1016/0098-8472(77)90025-9}
journal = {Environ. Exp. Bot.; (United Kingdom)}
volume = {17:1}
journal type = {AC}
place = {United Kingdom}
year = {1977}
month = {Apr}
}