Distribution of the morphological groups of aquatic plants for rivers in the UK

Citation
Fh. Dawson et al., Distribution of the morphological groups of aquatic plants for rivers in the UK, HYDROBIOL, 415, 1999, pp. 123-130
Citations number
11
Categorie Soggetti
Aquatic Sciences
Journal title
HYDROBIOLOGIA
ISSN journal
00188158 → ACNP
Volume
415
Year of publication
1999
Pages
123 - 130
Database
ISI
SICI code
0018-8158(199911)415:<123:DOTMGO>2.0.ZU;2-N
Abstract
During River Habitat Surveys on the physical structure of the watercourses in the U.K., channel vegetation types were recorded as present or extensive in 10 m wide belt transects at 50 m intervals over 500 m reaches for some 2435 stratified random sites in 1995-96. Data on attached, submerged, emerg ent and free-floating aquatic vegetation were grouped into nine broad morph ological groups such as submerged broad-, linear- and fine-leaved, free-flo ating, emergent, etc. Vegetation data are supported by assessments of physi cal parameters at each site including dimension, flow types, channel substr ate and the slope of the channel. The general habitat requirements for each group are shown to agree with assumed requirements but with a broader dist ribution of habitats. Eight percent of channels had excessive growths of ve getation and would normally be considered for weed control; this was a mini mum estimate.