The Distribution of Invertebrates on Submerged Aquatic Plants in a Chalk Stream
The Distribution of Invertebrates on Submerged Aquatic Plants in a Chalk Stream
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白垩溪流中沉水水生植物上无脊椎动物的分布
DOI:
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发表时间:
1964
期刊:
影响因子:
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通讯作者:
J. J. Harrod
中科院分区:
文献类型:
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作者:
J. J. Harrod
Studies of animal populations in various aquatic habitats have usually included some reference to the animals present on the vegetation (Carpenter 1927; Whitehead 1935; Moon 1936; Jones 1949; Smyly 1957) but few quantitative surveys of the animals on the plants have been attempted. There is a certain amount of evidence from the studies of vegetation in ponds and lakes, that different plants shelter different animals (Krecker 1939; Edmondson 1944; Bryden 1952; Smyly 1952; Rosine 1955). The quantitative investigations by Krecker and Rosine showed in addition, that plants with very finely divided leaves possessed larger and more varied animal populations than those with simple entire leaves. There is less evidence that different plants in streams possess different faunas. To date, observations have been of a qualitative nature (Butcher, Pentelow & Woodley 1931; Whitehead 1935). The following paper describes a quantitative investigation of the distribution and abundance of animals on four aquatic plants in a small chalk stream. The stream arises from the River Test below Romsey, Hampshire (Map reference: Ordnance Survey sheet 180, ref. 350170). An area of stream approximately 9 m long, containing beds of Ranunculus fluitans Lam., Callitriche platycarpa Kutz., Veronica beccabunga L. and a Carex sp.t was chosen as the site for the survey. The plants did not die down during the winter months.