摘要
在盐城自然保护区选取11个典型断面,调查大型底栖动物种类。按照食性类型、摄食方式,结合物种在相关的生态系统过程中的功能,将底栖动物功划分为食碎屑者,食悬浮者/滤食者,切碎者、生物扰动者、次级生产者5个关键功能群,分析潮间带大型底栖动物功能群结构及分布格局。结果表明,11个断面共有食碎屑者11种,食悬浮者24种,切碎者26种,生物扰动者26种,次级生产者26种,分别占总物种数的18.0%、39.3%、42.6%、42.6%和42.6%,物种在各功能群中分布比较均匀,在整个苏北潮间带生态系统的尺度上,相关的生态系统功能完整;食悬浮者和切碎者个体数量占据明显优势,在相关生态系统过程中发挥优势作用;中路港断面生物扰动者、次级生产者、食碎屑者、食悬浮者、切碎者物种数分别占所有断面物种数的22.0%、22.0%、20.0%、20.0%、20.3%,个体数分别占各功能群个体总数的60.0%、60.0%、52.2%、31.1%、26.9%,5个功能群的底栖动物个体数量和物种数目均在所有断面中占最大优势,对苏北潮间带生态系统相关功能有更大贡献。竹港断面功能群数、功能群的底栖动物个体数量和物种数目均在所有断面中占最低比例,功能群结构缺失,相关生态系统功能受到破坏。
Eleven typical transects along the tidal marshes in the YNNR were selected and the macrobenthos were investigated,then classed them into five functional groups according to their feeding habit,food gathering techniques,and their contribution to certain ecosystem processions. The five functional groups are Deposit Feeder（DPF）,Suspension Feeder/Filter Feeder（SPF）,Shredder（Sh）,Bioturbator（BT） and Secondary Producer（SDP）.The structure and distribution pattern of the five functional groups were analyzed and results showed that 11 species occurred as DPF,24 species as SPF,26 species as Sh,26 species as BT and 26 species as SDP,and with the similar proportion of 18.0%, 39.3%,42.6%,42.6%and 42.6%in the total species number,respectively,indicating that the tidal ecosystem functions relative to macrob-enthos were not destroyed in YNNR;The SPF and Sh occupied the most proportion of individual number among the five functional groups, showing that they have dominant contribution to the tidal ecosystem functions relative to macrobenthos in YNNR;The species number of DPF, SPF,Sh,BT and SDP in the Zhonglugang transect occupied the most proportion of the total species number in the seven transects as 22.0%, 22.0%,20.0%,20.0%,20.3%,and the individual number as 60.0%,60.0%,52.2%,31.1%,26.9%,respectively.Oppositely,the Zhugang transect had the least proportion of those in the eleven transects.It indicated that Zhonglugang played the most important role in keeping the tidal ecosystem functions relative to macrobenthos in YNNR whereas Zhugang played the least where the ecosystem functions relative to macrobenthos were destroyed.
出处
《安徽农业科学》
CAS
北大核心
2009年第36期18108-18113,共6页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金(40973053)
江苏省高校自然科学重大基础研究项目(08KJA180002)
