期刊
INTERNATIONAL REVIEW OF HYDROBIOLOGY
卷 93, 期 3, 页码 358-371出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/iroh.200711019
关键词
leaves; breakdown; river; shredders; colonisation
This study evaluated if there are differences in leaf breakdown and invertebrate colonization among tree species differing in quality (toughness), and which factors could influence these differences. Common alder leaves decomposed significantly faster then either sweet chestnut or Spanish oak (k values of -0.0332, -0.0108, and -0.0112, respectively) during the first 2 months. Shredder abundance was highest when leaf mass remaining was 50%, and the samples clustered in mixed groups of sampling dates and leaf species, suggesting that stage of decomposition was an important factor influencing shredder colonization. During the first two months of decomposition, the physicochemical characteristics of leaf litter and the interaction between leaf toughness and the occurrence of frequent spates seemed to be the main factors affecting leaf breakdown rates in the stream.
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