PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA

The imbalance existing between the demand and degradation of forest resources partially explains the on-going creation of exotic tree plantations. In northwestern Patagonia of Argentina, Pinus ponderosa (Pinaceae) afforestation plays a key role in conserving degraded soil, but may also reduce biodiv...

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Detalles Bibliográficos
Autor: Dezzotti, Alejandro
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:Brasil
Institución:Universidade Federal de Lavras (UFLA)
Repositorio:Cerne (Online)
Idioma:inglés
OAI Identifier:oai:cerne.ufla.br:article/2171
Acceso en línea:https://cerne.ufla.br/site/index.php/CERNE/article/view/2171
Access Level:acceso abierto
Palabra clave:natural forest, Pinus ponderosa, planted forest, rocky outcrop, wetland.
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spelling PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINAnatural forest, Pinus ponderosa, planted forest, rocky outcrop, wetland.The imbalance existing between the demand and degradation of forest resources partially explains the on-going creation of exotic tree plantations. In northwestern Patagonia of Argentina, Pinus ponderosa (Pinaceae) afforestation plays a key role in conserving degraded soil, but may also reduce biodiversity. The ecological sustainability of this activity was assessed in Aguas Frías (38°46´ W, 70°54´ S) and Litrán (38°54´ W, 71°01´ S) forest stations, where species richness and life form diversity of plants were compared in fenced and unfenced landscape units. Eleven units were identified, composed of natural herbaceous-shrubby steppes, xerophilous and hygrophilous meadows, and pure and mixed forests of Nothofagus pumilio (Nothofagaceae) and Araucaria araucana (Araucariaceae), and P. ponderosa planted forests of dissimilar canopy cover. Xerophilous meadows on rocky outcrops held 1/3 of total richness in an extremely restricted area. Hygrophilous meadows exhibited the largest number of families and native and introduced species, and low life form diversity. Dense pine stands showed low light and water availability in the understory, which correlated with low soil cover, hemicryptophyte frequency, richness and life form diversity. As canopy cover decreased, values for these indicators resembled those of the steppe of reference. Within a plantation, greater compatibility between conservation of diversity and wood production requires maintenance of fencing, reduced tree spacing over long rotations and the development of buffer zones and biological corridors. Although such a project may represent a decline in productivity, it will promote enhanced ecosystem and aesthetic values, increasing the likelihood of further economic support from society.CERNECERNE2019-11-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cerne.ufla.br/site/index.php/CERNE/article/view/2171CERNE; Vol. 25 No. 3 (2019); 301-313CERNE; v. 25 n. 3 (2019); 301-3132317-63420104-7760reponame:Cerne (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAenghttps://cerne.ufla.br/site/index.php/CERNE/article/view/2171/1147Copyright (c) 2019 CERNEinfo:eu-repo/semantics/openAccessDezzotti, Alejandro2019-11-14T11:12:47Zoai:cerne.ufla.br:article/2171Revistahttps://cerne.ufla.br/site/index.php/CERNEPUBhttps://cerne.ufla.br/site/index.php/CERNE/oaicerne@dcf.ufla.br||cerne@dcf.ufla.br2317-63420104-7760opendoar:2024-05-23T16:29:09.452294Cerne (Online) - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
title PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
spellingShingle PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
Dezzotti, Alejandro
natural forest, Pinus ponderosa, planted forest, rocky outcrop, wetland.
title_short PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
title_full PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
title_fullStr PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
title_full_unstemmed PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
title_sort PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG LANDSCAPE AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
dc.creator.none.fl_str_mv Dezzotti, Alejandro
author Dezzotti, Alejandro
author_facet Dezzotti, Alejandro
author_role author
dc.subject.por.fl_str_mv natural forest, Pinus ponderosa, planted forest, rocky outcrop, wetland.
topic natural forest, Pinus ponderosa, planted forest, rocky outcrop, wetland.
description The imbalance existing between the demand and degradation of forest resources partially explains the on-going creation of exotic tree plantations. In northwestern Patagonia of Argentina, Pinus ponderosa (Pinaceae) afforestation plays a key role in conserving degraded soil, but may also reduce biodiversity. The ecological sustainability of this activity was assessed in Aguas Frías (38°46´ W, 70°54´ S) and Litrán (38°54´ W, 71°01´ S) forest stations, where species richness and life form diversity of plants were compared in fenced and unfenced landscape units. Eleven units were identified, composed of natural herbaceous-shrubby steppes, xerophilous and hygrophilous meadows, and pure and mixed forests of Nothofagus pumilio (Nothofagaceae) and Araucaria araucana (Araucariaceae), and P. ponderosa planted forests of dissimilar canopy cover. Xerophilous meadows on rocky outcrops held 1/3 of total richness in an extremely restricted area. Hygrophilous meadows exhibited the largest number of families and native and introduced species, and low life form diversity. Dense pine stands showed low light and water availability in the understory, which correlated with low soil cover, hemicryptophyte frequency, richness and life form diversity. As canopy cover decreased, values for these indicators resembled those of the steppe of reference. Within a plantation, greater compatibility between conservation of diversity and wood production requires maintenance of fencing, reduced tree spacing over long rotations and the development of buffer zones and biological corridors. Although such a project may represent a decline in productivity, it will promote enhanced ecosystem and aesthetic values, increasing the likelihood of further economic support from society.
publishDate 2019
dc.date.none.fl_str_mv 2019-11-13
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://cerne.ufla.br/site/index.php/CERNE/article/view/2171
url https://cerne.ufla.br/site/index.php/CERNE/article/view/2171
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://cerne.ufla.br/site/index.php/CERNE/article/view/2171/1147
dc.rights.driver.fl_str_mv Copyright (c) 2019 CERNE
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2019 CERNE
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv CERNE
CERNE
publisher.none.fl_str_mv CERNE
CERNE
dc.source.none.fl_str_mv CERNE; Vol. 25 No. 3 (2019); 301-313
CERNE; v. 25 n. 3 (2019); 301-313
2317-6342
0104-7760
reponame:Cerne (Online)
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Cerne (Online)
collection Cerne (Online)
repository.name.fl_str_mv Cerne (Online) - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv cerne@dcf.ufla.br||cerne@dcf.ufla.br
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score 15,301603

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