生态学杂志2018，Vol.37Issue(4)：1065-1070,6.DOI:10.13292/j.1000-4890.201804.003
天津厚蟹植食对黄河三角洲高潮滩芦苇幼苗生长的影响
The effects of crab herbivory on the growth of Phragmites australis seedlings in a high marsh of the Yellow River delta
摘要
Abstract
Bottom-up and top-down effects as well as intra-and inter-specific interactions drive plant growth and reproduction in the salt marsh.Compared to the bottom-up effect,however,the top-down effect has been largely overlooked.Phragmites australis is a dominant species,whose populations living in the high marsh are important and unique in the Yellow River Delta.To reveal the impacts of the top-down factor on the growth of P.australis seedlings in the high marsh,we investigated the effects of Helice tientsinensis herbivory on their growth by establishing 24 plots with a size of 2 m×2 m.The seedlings of P.australis were heavily grazed and damaged by crab.In all plots,52.41％ of seedlings were not consumed by crabs,27.04％ of seedlings were mildly fed,and heavy herbivory by crab accounted for 20.54％.The growth of seedlings was significantly influenced by crab herbivory.Heavy herbivory by crab strongly reduced the height,leaf number and leaf length of seedlings.The top-down effects should be considered in the protection and management of P.australis vegetation in the Yellow River Delta.关键词
下行效应/盐沼/动植物关系/生物胁迫/天津厚蟹Key words
top-down effect/salt marsh/plant-animal relationship/biotic stress/Helice tientsinensis引用本文复制引用
张俪文,王安东,赵亚杰,宋建彬,韩广轩..天津厚蟹植食对黄河三角洲高潮滩芦苇幼苗生长的影响[J].生态学杂志,2018,37(4):1065-1070,6.基金项目
国家自然科学基金面上项目(31670533)和中国科学院青年创新促进会资助. （31670533）
