Aquatic macrophyte breakdown in an Appalachian river

B. H. Hill, J. R. Webster

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Weight loss from Podostemum ceratophyllum, Elodea canadensis, Potamogeton crispus, Justicia americana, and Typha latifolia was measured by exposing air dried leaf material in 15 cm2 nylon mesh bags (3 mm octagonal openings). Breakdown rates for these species were 0.037, 0.026, 0.02l, 0.016, and 0.007 day-1, respectively. In general, these rates are much faster than reported rates of tree leaf breakdown in streams. Shredders accounted for 35% of the macroinvertebrates found on the leaf bags. However, macroinvertebrate densities on the aquatic macrophyte tissue were well below densities commonly found on leaf bags in small streams. The rapid breakdown of aquatic macrophytes in the New River suggests that organic matter from this source may constitute a significant pulse in the annual energy dynamics of the river.

Original languageEnglish (US)
Pages (from-to)53-59
Number of pages7
JournalHydrobiologia
Volume89
Issue number1
DOIs
StatePublished - Apr 1 1982

Fingerprint

Appalachian region
macrophyte
bags
rivers
river
macroinvertebrates
macroinvertebrate
leaves
Podostemum
Ceratophyllum
Justicia
Potamogeton crispus
Elodea canadensis
Typha latifolia
air drying
nylon
macrophytes
weight loss
organic matter
energy

Keywords

  • decomposition
  • macrophytes
  • river

Cite this

Aquatic macrophyte breakdown in an Appalachian river. / Hill, B. H.; Webster, J. R.

In: Hydrobiologia, Vol. 89, No. 1, 01.04.1982, p. 53-59.

Research output: Contribution to journalArticle

Hill, B. H. ; Webster, J. R. / Aquatic macrophyte breakdown in an Appalachian river. In: Hydrobiologia. 1982 ; Vol. 89, No. 1. pp. 53-59.
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