Meiofauna versus macrofauna: Secondary production of invertebrates in a lowland chalk stream
Meiofauna versus macrofauna: Secondary production of invertebrates in a lowland chalk stream
复制标题
小型动物群与大型动物群：低地白垩溪流中无脊椎动物的二次生产
DOI：
10.4319/lo.2009.54.2.0450
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发表时间：
2009
影响因子：
4.5
通讯作者：
J. M. Schmid
中科院分区：
文献类型：
--
作者：
S. P. Tod;J. M. Schmid
本文对兰伯恩河（River Lambourn）英国白垩溪流中生活在大型植物林分和砾石床上的整个后生动物群落进行了1年的采样。采用尺寸-频率法对大型动物和小型动物的特定分类群进行了二级产量估算，通常在种或属水平上进行。估算了年常立生物量和产量与生物量的比值。大植林年次生产量高达64.99 g m−2 yr−1，砾石层年次生产量为22.55 g m−2 yr−1。两种生境中大型动物群对次生产量的贡献率均为0.91%。大植林相应的林分生物量为11.87 g m−2，也高于砾石层的5.13 g m−2。在这两个生境中，大型动物对直立生物量的贡献为0.97%。大量小型动物和一些大型动物的年生产生物量比（P: B）值均显著高于9或10。尽管兰伯恩河底栖动物的密度和周转率较高，但小型动物对以大型动物为主的次生生产的贡献很小。
The whole metazoan community inhabiting macrophyte stands and gravel beds of the English chalk stream River Lambourn were sampled for 1 yr. Secondary production estimates for specific taxa of macrofauna and meiofauna, usually at species or genus level, were made using the size‐frequency method. Annual standing biomass and production to biomass ratios were also estimated. Total annual secondary production was as high as 64.99 g m−2 yr−1 in the macrophyte stands while within the gravel beds total annual secondary production was 22.55 g m−2 yr−1. Macrofauna contributed >91% to secondary production in both habitats. A corresponding standing biomass of 11.87 g m−2 in the macrophyte stands was also higher than within gravel beds of 5.13 g m−2. Macrofauna contributed >97% to standing biomass in both habitats. A large number of meiofauna and some macrofauna species displayed annual production‐to‐biomass (P : B) values in both habitats significantly higher than 9 or 10. Despite higher densities and turnover rates within the benthos of the River Lambourn, there was a minimal contribution of the meiofauna to total secondary production dominated by the macrofauna.