AMEBAL GROWTH IN SOIL MICROCOSMS - MODEL SYSTEM OF C, N, AND P TROPHIC DYNAMICS

被引：17

作者：

ELLIOTT, ET

COLE, CV

COLEMAN, DC

ANDERSON, RV

HUNT, HW

MCCLELLAN, JF

机构：

[1] Natural Resource Ecology Laboratory, Colorado State University, Fort Collins

[2] Phosphorus Laboratory, Agricultural Research, USDA, Fort Collins

[3] Natural Resource Ecology Laboratory, Colorado State University, Fort Collins

[4] Department of Zoology University, Entomology, Colorado State University, Fort Collins

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL STUDIES | 1979年 / 13卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/00207237908709818

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Associations of terrestrial bacteria and amoebae provide a model system for understanding element dynamics mediated by trophic relationships in soil ecosystems. A Pseudomonas sp. and Acanthamoeba sp. were chosen for inoculation into soil sterilized with propylene oxide after screening bacterial and amoebal isolates from blue grama [Bouteloua gracilis (H.B.K.) Lag.] rhizospheres for compatibility and activity. Carbon, nitrogen, and phosphorus uptake and release were monitored in noninoculated, bacterial, and bacterial-amoebal microcosms for incubation periods up to 30 days. Amoebal systems mineralized significantly more of these elements than systems with bacteria alone. Microbial phosphorus measurements also reflected the heavy amoebal grazing pressure. © 1979, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：169 / 174

页数：6

共 25 条

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