Relating water use to morphology and environment of Nothofagus from the world’s most southern forests
A pronounced environmental gradient dictates the dominance of Nothofagus in the foothills on the eastern side of the Andes Mountains in Patagonia, Argentina. Below 50° southern latitude, open forests of Nothofagus antarctica (ñire) dominate the landscape towards the Patagonian steppe where annual ra...
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ftconicet:oai:ri.conicet.gov.ar:11336/32591 2023-10-09T21:45:38+02:00 Relating water use to morphology and environment of Nothofagus from the world’s most southern forests Pfautsch, Sebastian Peri, Pablo Luis Macfarlane, Craig Ogtrop, Floris van Adams, Mark A. application/pdf http://hdl.handle.net/11336/32591 eng eng Springer info:eu-repo/semantics/altIdentifier/doi/10.1007/s00468-013-0935-4 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00468-013-0935-4 http://hdl.handle.net/11336/32591 Peri, Pablo Luis; Ogtrop, Floris van; Adams, Mark A.; Pfautsch, Sebastian; Macfarlane, Craig; Relating water use to morphology and environment of Nothofagus from the world’s most southern forests; Springer; Trees; 28; 1; 9-2013; 125-136 0931-1890 1432-2285 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Stand Transpiration Crown Area Leaf Area Sapwood Area Climate Nothofagus Antarctica Nothofagus Pumilio 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/10.1007/s00468-013-0935-4 2023-09-24T19:32:48Z A pronounced environmental gradient dictates the dominance of Nothofagus in the foothills on the eastern side of the Andes Mountains in Patagonia, Argentina. Below 50° southern latitude, open forests of Nothofagus antarctica (ñire) dominate the landscape towards the Patagonian steppe where annual rainfall is low. With increasing rates of annual rainfall, corresponding with an increase in elevation, closed forests of N. pumilio (lenga) replace those of ñire. During a short-term study we assessed differences in stand structure and examined environmental, structural and functional traits related to tree water use of ñire and lenga. Sap velocity reached similar maximum rates (95–100 L m−2 sapwood h−1), but whole-tree water use (Q) was significantly lower in ñire (8–13 L day−1 tree−1) compared to lenga (20–90 L day−1 tree−1) resulting in lower stand transpiration (ñire: 0.51 mm day−1; lenga: 3.42 mm day−1) despite similar tree densities. Related to this, wind speed had a particularly significant impact on Q of ñire, but not lenga. The ratio of leaf area to sapwood area (AL/AS) clearly identified ñire to be more structurally proficient at conserving water. While stem diameter (DBH) and crown area (AC) were well related in both species, only lenga exhibited relationships between variables related to tree allometry and physiology (AC/Q, DBH/Q). Our results provide the first ecophysiological characterization of the two Nothofagus species that define important and widespread ecosystems in southern Patagonia (not only below 50°S), and provide useful data to scale water use of both species from tree to stand. Fil: Pfautsch, Sebastian. University of Sydney; Australia. University of Western Sydney; Australia Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Macfarlane, Craig. CSIRO Ecosystem Sciences; Australia Fil: Ogtrop, Floris van. University of Sydney; Australia Fil: Adams, Mark A. University of Sydney; ... Article in Journal/Newspaper Antarc* Antarctica CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Austral Patagonia Argentina Pablo ENVELOPE(-63.717,-63.717,-64.283,-64.283) Trees 28 1 125 136 |
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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 |
Stand Transpiration Crown Area Leaf Area Sapwood Area Climate Nothofagus Antarctica Nothofagus Pumilio https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
Stand Transpiration Crown Area Leaf Area Sapwood Area Climate Nothofagus Antarctica Nothofagus Pumilio https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Pfautsch, Sebastian Peri, Pablo Luis Macfarlane, Craig Ogtrop, Floris van Adams, Mark A. Relating water use to morphology and environment of Nothofagus from the world’s most southern forests |
topic_facet |
Stand Transpiration Crown Area Leaf Area Sapwood Area Climate Nothofagus Antarctica Nothofagus Pumilio https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
A pronounced environmental gradient dictates the dominance of Nothofagus in the foothills on the eastern side of the Andes Mountains in Patagonia, Argentina. Below 50° southern latitude, open forests of Nothofagus antarctica (ñire) dominate the landscape towards the Patagonian steppe where annual rainfall is low. With increasing rates of annual rainfall, corresponding with an increase in elevation, closed forests of N. pumilio (lenga) replace those of ñire. During a short-term study we assessed differences in stand structure and examined environmental, structural and functional traits related to tree water use of ñire and lenga. Sap velocity reached similar maximum rates (95–100 L m−2 sapwood h−1), but whole-tree water use (Q) was significantly lower in ñire (8–13 L day−1 tree−1) compared to lenga (20–90 L day−1 tree−1) resulting in lower stand transpiration (ñire: 0.51 mm day−1; lenga: 3.42 mm day−1) despite similar tree densities. Related to this, wind speed had a particularly significant impact on Q of ñire, but not lenga. The ratio of leaf area to sapwood area (AL/AS) clearly identified ñire to be more structurally proficient at conserving water. While stem diameter (DBH) and crown area (AC) were well related in both species, only lenga exhibited relationships between variables related to tree allometry and physiology (AC/Q, DBH/Q). Our results provide the first ecophysiological characterization of the two Nothofagus species that define important and widespread ecosystems in southern Patagonia (not only below 50°S), and provide useful data to scale water use of both species from tree to stand. Fil: Pfautsch, Sebastian. University of Sydney; Australia. University of Western Sydney; Australia Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Macfarlane, Craig. CSIRO Ecosystem Sciences; Australia Fil: Ogtrop, Floris van. University of Sydney; Australia Fil: Adams, Mark A. University of Sydney; ... |
format |
Article in Journal/Newspaper |
author |
Pfautsch, Sebastian Peri, Pablo Luis Macfarlane, Craig Ogtrop, Floris van Adams, Mark A. |
author_facet |
Pfautsch, Sebastian Peri, Pablo Luis Macfarlane, Craig Ogtrop, Floris van Adams, Mark A. |
author_sort |
Pfautsch, Sebastian |
title |
Relating water use to morphology and environment of Nothofagus from the world’s most southern forests |
title_short |
Relating water use to morphology and environment of Nothofagus from the world’s most southern forests |
title_full |
Relating water use to morphology and environment of Nothofagus from the world’s most southern forests |
title_fullStr |
Relating water use to morphology and environment of Nothofagus from the world’s most southern forests |
title_full_unstemmed |
Relating water use to morphology and environment of Nothofagus from the world’s most southern forests |
title_sort |
relating water use to morphology and environment of nothofagus from the world’s most southern forests |
publisher |
Springer |
url |
http://hdl.handle.net/11336/32591 |
long_lat |
ENVELOPE(-63.717,-63.717,-64.283,-64.283) |
geographic |
Austral Patagonia Argentina Pablo |
geographic_facet |
Austral Patagonia Argentina Pablo |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00468-013-0935-4 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00468-013-0935-4 http://hdl.handle.net/11336/32591 Peri, Pablo Luis; Ogtrop, Floris van; Adams, Mark A.; Pfautsch, Sebastian; Macfarlane, Craig; Relating water use to morphology and environment of Nothofagus from the world’s most southern forests; Springer; Trees; 28; 1; 9-2013; 125-136 0931-1890 1432-2285 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00468-013-0935-4 |
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28 |
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125 |
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136 |
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1779320464318922752 |