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| Titel |
Processing of pine (Pinus sylvestris) and birch (Betula pubescens) leaf material in a small river system in the northern Cairngorms, Scotland |
| VerfasserIn |
P. Collen, E. J. Keay, B. R. S. Morrison |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 8, no. 3 ; Nr. 8, no. 3, S.567-577 |
| Datensatznummer |
250005624
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| Publikation (Nr.) |
 copernicus.org/hess-8-567-2004.pdf |
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| Zusammenfassung |
| Processing rates, and macroinvertebrate colonisation, of pine needles and birch
leaves were studied at eight sites on the river Nethy, a small river system in the
Cairngorm region of north-eastern Scotland. Throughout this river system, processing rates
were slow for pine (k values 0.0015-0.0034 day-1)
and medium to fast for birch (k values 0.0085-0.0331 day-1).
Plecopteran shredders dominated both pine and birch leaf packs during the early part of
the experiment while chironomids were more important in the latter stages. It is suggested
that the slow processing rate of pine needles could adversely affect the productivity of
streams, particularly where needles provide the major allochthonous energy source and
retentive features are limited. Forest managers should consider this when creating new
pinewoods in treeless areas as it will take many years for the trees to reach a size at
which they can effectively contribute retentive features, in the form of woody debris, to
streams.
Keywords: leaf processing, pine needles, shredders, Pinus sylvestris,
Betula pubescens, Scotland. |
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