Interspecific Leaf Interactions during Decomposition in Aquatic and Floodplain Ecosystems

Autor:	Russell B. Rader, J. Vaun McArthur, John M. Aho, Gary L. Mills
Rok vydání:	1994
Předmět:	geography geography.geographical_feature_category biology Floodplain Coastal plain education Liquidambar styraciflua STREAMS Interspecific competition Aquatic Science biology.organism_classification Quercus nigra Snag Agronomy Botany Ecosystem Ecology Evolution Behavior and Systematics
Zdroj:	Journal of the North American Benthological Society. 13:57-67
ISSN:	1937-237X 0887-3593
DOI:	10.2307/1467265
Popis:	An experiment was designed to test the importance of the potential interaction (inhibition or enhancement) between slow and fast decaying leaf species on processing rates in a stream and its floodplain. The decomposition of water oak (Quercus nigra) and sweetgum (Liquidambar styraciflua) in single-species packs was compared with water oak plus sweetgum in mixed-species packs within three habitats (stream snags, floodplain pools, and elevated floodplain surfaces) at three sites in coastal plain streams. Fast-decaying sweetgum leaves did not enhance the rate of oak decomposition. Sweetgum leaves in mixed packs decomposed more slowly than single species packs in seven out of nine comparisons. Increases in bacterial density on leaves were depressed in mixed-species packs relative to single-species sweetgum packs. Fungal hyphae could not be observed in mixed or single-species packs. The effect of oak leaves on sweetgum leaves was affected by frequency and period of inundation. Macroinvertebrate shredders were ...
Databáze:	OpenAIRE
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