权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

DISSERTATION RESEARCH: The Role of Porcellio Scaber in a Litter Processing Chain

论文研究：Porcellio Scaber 在垃圾处理链中的作用

基本信息

批准号：
0508759
负责人：
Donald Strong
金额：
$ 0.99万
依托单位：
University of California-Davis
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2005
资助国家：
美国
起止时间：
2005-07-15 至 2007-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0508759&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Role Porcellio Scaber

项目摘要

Ecologists have long been interested in the factors that control the decomposition of plant matter in terrestrial ecosystems. Decomposition is the primary process through which nutrients taken up by plants are recycled in the ecosystem. Although the physical environmental controls on decomposition have been well studied, relatively little is known about interactions among the animals that feed on detritus or how such interactions affect decomposition. Large detritivores, such as earthworms, millipedes and sow bugs, may improve the quality of food available for small soil animals such as nematodes and springtails. This project examines the interaction between a common sow bug, Porcellio scaber, and soil fauna. Porcellio scaber dramatically increases the breakdown of plant litter in this study system. The sow bugs may accelerate incorporation of plant litter into the soil, and benefit soil animals that depend on such influxes of detritus. Sow bug feeding may also benefit soil detritivores by improving the nutrient content of detritus and facilitating of microbe colonization. This work will test these hypotheses with field and laboratory experiments and demonstrate the overall impact of Porcellio scaber on soil fauna in a natural soil community and in controlled laboratory experiments. This study will contribute to a greater understanding of how carbon is cycled through decomposer foodwebs, and how species interactions contribute to variation in decomposition rates. This project will also support the dissertation research of a doctoral student.

长期以来，生态学家一直对控制陆地生态系统中植物物质分解的因素感兴趣。分解是植物吸收的营养物质在生态系统中循环的主要过程。虽然对分解的物理环境控制已经进行了很好的研究，但对以碎屑为食的动物之间的相互作用或这种相互作用如何影响分解知之甚少。大型食虫动物，如蚯蚓、千足虫和母猪蝽，可能会改善线虫和跳虫等小型土壤动物的食物质量。本项目研究了一种常见的母猪虫，Porcellio scaber和土壤动物之间的相互作用。在本研究系统中，Porcellio scaber显著增加了植物凋落物的分解。母猪臭虫可以加速植物凋落物与土壤的结合，并有益于依赖这种碎屑流入的土壤动物。母猪喂养臭虫也可能有利于土壤食草动物，提高碎屑的营养含量和促进微生物的定植。这项工作将测试这些假设与现场和实验室实验，并展示了整体影响的Porcellio粗糙的土壤动物在自然土壤群落和控制实验室实验。这项研究将有助于更好地了解碳是如何通过分解食物网循环的，以及物种之间的相互作用如何影响分解率的变化。该项目还将支持博士生的论文研究。