Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile

Leaf litter input from riparian landscapes has been identified as both a major energy flow to stream ecosystems and as a food source for stream macroinvertebrates. In riparian landscapes of woodland streams of central Chile, the native deciduous hardwoods are being artificially replaced by exotic co...

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Autor principal:	VALDOVINOS,CLAUDIO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2001
Materias:	macroinvertebrates leaf processing stream ecosystem Chile exotic plantations riparian vegetation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200018
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spelling	oai:scielo:S0716-078X20010002000182001-11-08Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central ChileVALDOVINOS,CLAUDIO macroinvertebrates leaf processing stream ecosystem Chile exotic plantations riparian vegetation Leaf litter input from riparian landscapes has been identified as both a major energy flow to stream ecosystems and as a food source for stream macroinvertebrates. In riparian landscapes of woodland streams of central Chile, the native deciduous hardwoods are being artificially replaced by exotic coniferous trees at a large spatial scale. It is suggested that this process has a significant impact on the stream communities of central Chile. Today, exotic plantations occur throughout central Chile, with Pinus radiata (D. Don) (Monterrey pine) accounting for about 80 % of the more than 1,800,000 ha of exotic forests. The objective of this paper was to analyze the effect of the litter beds of a dominant native species (Nothofagus pumilio) and an exotic species (P. radiata) on the detritus processing carried out by benthic macroinvertebrates, in an experimental catchment of central Chile (Rucúe Creek; 36° 26'00" S, 71° 35'40" W). Results revealed that processing rates of native leaf packs are higher than rates of coniferous leaf packs, suggesting that the replacement of the native hardwoods by exotic coniferous riparian flora has an important impact on the stream energy flow in central Chile. The decay rate coefficients (k) were 0.0072 for N. pumilio, and 0.0027 for P. radiata. The greater abundance and biomass of shredders per gram of leaf pack of native Nothofagus would explain the differences in leaf processing rates, especially through the activity of two Plecoptera Gripopterygidae, Limnoperla jaffueli and Antarctoperla michaelseniinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.74 n.2 20012001-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200018en10.4067/S0716-078X2001000200018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	macroinvertebrates leaf processing stream ecosystem Chile exotic plantations riparian vegetation
spellingShingle	macroinvertebrates leaf processing stream ecosystem Chile exotic plantations riparian vegetation VALDOVINOS,CLAUDIO Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile
description	Leaf litter input from riparian landscapes has been identified as both a major energy flow to stream ecosystems and as a food source for stream macroinvertebrates. In riparian landscapes of woodland streams of central Chile, the native deciduous hardwoods are being artificially replaced by exotic coniferous trees at a large spatial scale. It is suggested that this process has a significant impact on the stream communities of central Chile. Today, exotic plantations occur throughout central Chile, with Pinus radiata (D. Don) (Monterrey pine) accounting for about 80 % of the more than 1,800,000 ha of exotic forests. The objective of this paper was to analyze the effect of the litter beds of a dominant native species (Nothofagus pumilio) and an exotic species (P. radiata) on the detritus processing carried out by benthic macroinvertebrates, in an experimental catchment of central Chile (Rucúe Creek; 36° 26'00" S, 71° 35'40" W). Results revealed that processing rates of native leaf packs are higher than rates of coniferous leaf packs, suggesting that the replacement of the native hardwoods by exotic coniferous riparian flora has an important impact on the stream energy flow in central Chile. The decay rate coefficients (k) were 0.0072 for N. pumilio, and 0.0027 for P. radiata. The greater abundance and biomass of shredders per gram of leaf pack of native Nothofagus would explain the differences in leaf processing rates, especially through the activity of two Plecoptera Gripopterygidae, Limnoperla jaffueli and Antarctoperla michaelseni
author	VALDOVINOS,CLAUDIO
author_facet	VALDOVINOS,CLAUDIO
author_sort	VALDOVINOS,CLAUDIO
title	Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile
title_short	Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile
title_full	Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile
title_fullStr	Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile
title_full_unstemmed	Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile
title_sort	riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central chile
publisher	Sociedad de Biología de Chile
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200018
work_keys_str_mv	AT valdovinosclaudio riparianleaflitterprocessingbybenthicmacroinvertebratesinawoodlandstreamofcentralchile
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Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile

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