Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina
Coarse woody debris (CWD) is an important element driving ecological processes, strengthening ecosystem resilience and for biodiversity within forest ecosystems. However, the abundance and distribution of CWD and their relation to natural and human factors are poorly known in southern South America....
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ftconicet:oai:ri.conicet.gov.ar:11336/182974 2023-10-09T21:47:15+02:00 Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina Szymañski, Carolina Fontana, Gisela Sanguinetti, Javier application/pdf http://hdl.handle.net/11336/182974 eng eng Wiley Blackwell Publishing, Inc info:eu-repo/semantics/altIdentifier/doi/10.1111/aec.12400 info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/aec.12400 http://hdl.handle.net/11336/182974 Szymañski, Carolina; Fontana, Gisela Sanguinetti, Javier; Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina; Wiley Blackwell Publishing, Inc; Austral Ecology; 42; 1; 2-2017; 48-60 1442-9985 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ COARSE WOODY DEBRIS FIRE HISTORY HUMAN ACCESS STAND DEVELOPMENT https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1111/aec.12400 2023-09-24T19:06:17Z Coarse woody debris (CWD) is an important element driving ecological processes, strengthening ecosystem resilience and for biodiversity within forest ecosystems. However, the abundance and distribution of CWD and their relation to natural and human factors are poorly known in southern South America. In this work we studied the density and volume of CWD types in Nothofagus–Araucaria stands in northern Patagonia (Neuquén – Argentina) and relationships with forest composition and structure. We also studied their relationships with fire history, topography and human-related variables. Twenty-three stands with Nothofagus pumilio, Nothofagus antarctica and/or Araucaria araucana were sampled to estimate quantities of logs, snags and dead branches using the planar-intersect method. CWD density and volume in these forests were moderate and varied across the landscape with a spatial pattern determined by biotic, abiotic and human use–related variables. Mean CWD volume was 52.9 m3 ha−1 (range: 1.6–143.7) and significantly varied among forest types and watersheds. CWD was positively related to dbh, tree height and slope, but negatively related to tree density. CWD was clearly influenced by composition and structural characteristics of stands, where the tree species traits had an important role. As well, the observed amount and type of CWD, whereby most of the stands showed low levels of old (pre-disturbance) logs/snags and poor new inputs of deadwood, may be explained by fire frequency. Firewood gathering and livestock grazing negatively affected deadwood stocks and topography counteracts this effect by limiting human access. Fire disturbance history, windthrow and dieback pulses produced by insect outbreaks and human access seemed to be the main causes that best explained CWD spatial distribution and abundance patterns in north-western Patagonian forests. Fil: Szymañski, Carolina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro ... Article in Journal/Newspaper Antarc* Antarctica CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Deadwood ENVELOPE(-117.453,-117.453,56.733,56.733) Patagonia Austral Ecology 42 1 48 60 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
COARSE WOODY DEBRIS FIRE HISTORY HUMAN ACCESS STAND DEVELOPMENT https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
COARSE WOODY DEBRIS FIRE HISTORY HUMAN ACCESS STAND DEVELOPMENT https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Szymañski, Carolina Fontana, Gisela Sanguinetti, Javier Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina |
topic_facet |
COARSE WOODY DEBRIS FIRE HISTORY HUMAN ACCESS STAND DEVELOPMENT https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Coarse woody debris (CWD) is an important element driving ecological processes, strengthening ecosystem resilience and for biodiversity within forest ecosystems. However, the abundance and distribution of CWD and their relation to natural and human factors are poorly known in southern South America. In this work we studied the density and volume of CWD types in Nothofagus–Araucaria stands in northern Patagonia (Neuquén – Argentina) and relationships with forest composition and structure. We also studied their relationships with fire history, topography and human-related variables. Twenty-three stands with Nothofagus pumilio, Nothofagus antarctica and/or Araucaria araucana were sampled to estimate quantities of logs, snags and dead branches using the planar-intersect method. CWD density and volume in these forests were moderate and varied across the landscape with a spatial pattern determined by biotic, abiotic and human use–related variables. Mean CWD volume was 52.9 m3 ha−1 (range: 1.6–143.7) and significantly varied among forest types and watersheds. CWD was positively related to dbh, tree height and slope, but negatively related to tree density. CWD was clearly influenced by composition and structural characteristics of stands, where the tree species traits had an important role. As well, the observed amount and type of CWD, whereby most of the stands showed low levels of old (pre-disturbance) logs/snags and poor new inputs of deadwood, may be explained by fire frequency. Firewood gathering and livestock grazing negatively affected deadwood stocks and topography counteracts this effect by limiting human access. Fire disturbance history, windthrow and dieback pulses produced by insect outbreaks and human access seemed to be the main causes that best explained CWD spatial distribution and abundance patterns in north-western Patagonian forests. Fil: Szymañski, Carolina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro ... |
format |
Article in Journal/Newspaper |
author |
Szymañski, Carolina Fontana, Gisela Sanguinetti, Javier |
author_facet |
Szymañski, Carolina Fontana, Gisela Sanguinetti, Javier |
author_sort |
Szymañski, Carolina |
title |
Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina |
title_short |
Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina |
title_full |
Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina |
title_fullStr |
Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina |
title_full_unstemmed |
Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina |
title_sort |
natural and anthropogenic influences on coarse woody debris stocks in nothofagus–araucaria forests of northern patagonia, argentina |
publisher |
Wiley Blackwell Publishing, Inc |
url |
http://hdl.handle.net/11336/182974 |
long_lat |
ENVELOPE(-117.453,-117.453,56.733,56.733) |
geographic |
Argentina Deadwood Patagonia |
geographic_facet |
Argentina Deadwood Patagonia |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/aec.12400 info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/aec.12400 http://hdl.handle.net/11336/182974 Szymañski, Carolina; Fontana, Gisela Sanguinetti, Javier; Natural and anthropogenic influences on coarse woody debris stocks in Nothofagus–Araucaria forests of northern Patagonia, Argentina; Wiley Blackwell Publishing, Inc; Austral Ecology; 42; 1; 2-2017; 48-60 1442-9985 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1111/aec.12400 |
container_title |
Austral Ecology |
container_volume |
42 |
container_issue |
1 |
container_start_page |
48 |
op_container_end_page |
60 |
_version_ |
1779310221808631808 |