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Effects of Leaf Litter Species on Macroinvertebrate Colonization during Decomposition in a Portuguese Stream

✍ Scribed by Manuela Abelho

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 324 KB
Volume: 93
Category: Article
ISSN: 1434-2944
DOI: 10.1002/iroh.200711019

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✦ Synopsis

Abstract

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. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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