Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)

The post-summer leaf demography of the wintergreen species Aristotelia chilensis growing near San Carlos de Bariloche, Argentina, is described. Its specific leaf mass (SLM, g m-2) is compared to that of the deciduous and evergreen species of the Andean-Patagonian forests and to that of other communi...

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Autores principales:	DAMASCOS,MARÍA ANGÉLICA, PRADO,CARLOS HENRIQUE B.A.
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2001
Materias:	deciduousness leaf life span specific leaf mass temperate forest wintergreen species
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000400008
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spelling	oai:scielo:S0716-078X20010004000082014-05-22Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)DAMASCOS,MARÍA ANGÉLICAPRADO,CARLOS HENRIQUE B.A. deciduousness leaf life span specific leaf mass temperate forest wintergreen species The post-summer leaf demography of the wintergreen species Aristotelia chilensis growing near San Carlos de Bariloche, Argentina, is described. Its specific leaf mass (SLM, g m-2) is compared to that of the deciduous and evergreen species of the Andean-Patagonian forests and to that of other communities abroad. The pattern of leaf emergence is intermediate, with leaf flush in spring (basal cohort, BC), followed by successive unfolding of the remaining leaves (distal cohort, DC) during summer. The senescence of the BC occurs mainly in autumn, with a loss of 11-31 % of its SLM. The DC falls synchronously in mid-spring and the SLM loss in winter is 10-13 %. The SLM of A. chilensis (103.6 ± 6.2 g m-2) is intermediate when compared to the general mean values of deciduous (73.7 ± 15.9 g m-2) and evergreen species (154.8 ± 45.8 g m-2). The SLM of deciduous and evergreen species of three different forests near San Carlos de Bariloche varied significantly at the end of the growing season while that of A. chilensis showed more constant values. The periodicity of leaf production and senescence in A. chilensis allows the maintenance of one leaf cohort throughout the year, covering the carbon demand for flowering and leaf production in spring. This differentiates the deciduous from the wintergreen species, despite their similar mean leaf life span values, while the evergreen species have a longer leaf turnover. Considering the conditions for growth in each studied forest, the leaf life span was not the only factor determining the SLM value. This variable would also depend on multiple stresses that may act during the ontogenesis and evolution of the leaves in each phenological groupinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.74 n.4 20012001-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000400008en10.4067/S0716-078X2001000400008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	deciduousness leaf life span specific leaf mass temperate forest wintergreen species
spellingShingle	deciduousness leaf life span specific leaf mass temperate forest wintergreen species DAMASCOS,MARÍA ANGÉLICA PRADO,CARLOS HENRIQUE B.A. Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)
description	The post-summer leaf demography of the wintergreen species Aristotelia chilensis growing near San Carlos de Bariloche, Argentina, is described. Its specific leaf mass (SLM, g m-2) is compared to that of the deciduous and evergreen species of the Andean-Patagonian forests and to that of other communities abroad. The pattern of leaf emergence is intermediate, with leaf flush in spring (basal cohort, BC), followed by successive unfolding of the remaining leaves (distal cohort, DC) during summer. The senescence of the BC occurs mainly in autumn, with a loss of 11-31 % of its SLM. The DC falls synchronously in mid-spring and the SLM loss in winter is 10-13 %. The SLM of A. chilensis (103.6 ± 6.2 g m-2) is intermediate when compared to the general mean values of deciduous (73.7 ± 15.9 g m-2) and evergreen species (154.8 ± 45.8 g m-2). The SLM of deciduous and evergreen species of three different forests near San Carlos de Bariloche varied significantly at the end of the growing season while that of A. chilensis showed more constant values. The periodicity of leaf production and senescence in A. chilensis allows the maintenance of one leaf cohort throughout the year, covering the carbon demand for flowering and leaf production in spring. This differentiates the deciduous from the wintergreen species, despite their similar mean leaf life span values, while the evergreen species have a longer leaf turnover. Considering the conditions for growth in each studied forest, the leaf life span was not the only factor determining the SLM value. This variable would also depend on multiple stresses that may act during the ontogenesis and evolution of the leaves in each phenological group
author	DAMASCOS,MARÍA ANGÉLICA PRADO,CARLOS HENRIQUE B.A.
author_facet	DAMASCOS,MARÍA ANGÉLICA PRADO,CARLOS HENRIQUE B.A.
author_sort	DAMASCOS,MARÍA ANGÉLICA
title	Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)
title_short	Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)
title_full	Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)
title_fullStr	Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)
title_full_unstemmed	Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)
title_sort	leaf phenology and its associated traits in the wintergreen species aristotelia chilensis (mol.) stuntz (elaeocarpaceae)
publisher	Sociedad de Biología de Chile
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000400008
work_keys_str_mv	AT damascosmariaangelica leafphenologyanditsassociatedtraitsinthewintergreenspeciesaristoteliachilensismolstuntzelaeocarpaceae AT pradocarloshenriqueba leafphenologyanditsassociatedtraitsinthewintergreenspeciesaristoteliachilensismolstuntzelaeocarpaceae
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Leaf phenology and its associated traits in the wintergreen species Aristotelia chilensis (Mol.) Stuntz (Elaeocarpaceae)

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