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Chemically Mediated Interactions in a Sedimentary Assemblage

Chemically Mediated Interactions in a Sedimentary Assemblage
沉积组合中化学介导的相互作用
批准号:
8906705
负责人:
Sarah Woodin
金额:
$22.0万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1989
资助国家:
美国
项目状态:
已结题
起止时间:
1989-10-01 至 1992-09-30

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中文摘要
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英文摘要
Chemical mediation of linkages among species at different trophic levels is an important characteristic of ecosystems. This proposal examines a sedimentary community dominated at middle trophic levels by organisms which produce toxins that influence higher and lower trophic levels. The exudation of the toxin monobromophenol by the polychaete worm Notomastus lobatus into the sediment is hypothesized to influence the activity and composition of the microbial community, recruitment of infauna, and predation/disturbance by sediment feeding predators. Experiments are proposed which examine the dose response of functional groups and the total community of bacteria to monobromophenol, allelochemical inhibition of larval settlement and adult activity of infauna, and the relationship of predator activity to the presence of monobromophenol in the sediment.
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Potential for recovery of arctic tundra from atmospheric nitrogen deposition
  • 批准号:
    NE/I016899/1
  • 项目类别:
    Research Grant
  • 资助金额:
    $6.71万
  • 财政年份:
    2011
  • 负责人:
    Sarah Woodin
  • 依托单位:
Linking infaunal hydraulic activities, porewater flow and biogeochemical processes in marine sediments
Recruitment Success in Infauna: Geochemical Cues
Chemically Mediated Interactions in a Sedimentary Assemblage
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