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Selecting late-successional trees fo...

Martinez-Garza, Cristina.

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Selecting late-successional trees for tropical forest restoration.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Selecting late-successional trees for tropical forest restoration./
作者:	Martinez-Garza, Cristina.
面頁冊數:	146 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5323.
Contained By:	Dissertation Abstracts International64-11B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3111243

Selecting late-successional trees for tropical forest restoration.
Martinez-Garza, Cristina.

Selecting late-successional trees for tropical forest restoration. - 146 p.

Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5323.

Thesis (Ph.D.)--University of Illinois at Chicago, 2003.

Planting seedlings of interior forest species after land abandonment could sharply accelerate the process of re-vegetation of complex communities. Pioneer stands or monocultural plantations may be enriched with seedlings of late-successional animal-dispersed trees, or initial plantings could be mixes of late-successional and pioneer species. This thesis sets criteria for selecting species for enrichments and in some cases for overstories. My main hypothesis is that those species with leaf traits associated to high light levels and/or higher ability to adjust leaf traits to different light levels and water availability, will survive and grow better in environmental conditions typical of early successional environments (i.e., abandoned pastures, secondary forest). Further, tall species (canopy and emergent) experience a vertical gradient in light levels and water availability from their seedling stage in the shade understory to the bright canopy. Therefore, I expect tall species to show leaf traits related to high light levels and higher ability to adjust leaf traits to different environmental conditions, reflected by higher intraspecific variation in leaf traits measured across various microhabitats.Subjects--Topical Terms:

1017726
Biology, Ecology.

Selecting late-successional trees for tropical forest restoration.
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245 1 0 $a Selecting late-successional trees for tropical forest restoration.
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500 $a Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5323.
500 $a Adviser: Henry F. Howe.
502 $a Thesis (Ph.D.)--University of Illinois at Chicago, 2003.
520 $a Planting seedlings of interior forest species after land abandonment could sharply accelerate the process of re-vegetation of complex communities. Pioneer stands or monocultural plantations may be enriched with seedlings of late-successional animal-dispersed trees, or initial plantings could be mixes of late-successional and pioneer species. This thesis sets criteria for selecting species for enrichments and in some cases for overstories. My main hypothesis is that those species with leaf traits associated to high light levels and/or higher ability to adjust leaf traits to different light levels and water availability, will survive and grow better in environmental conditions typical of early successional environments (i.e., abandoned pastures, secondary forest). Further, tall species (canopy and emergent) experience a vertical gradient in light levels and water availability from their seedling stage in the shade understory to the bright canopy. Therefore, I expect tall species to show leaf traits related to high light levels and higher ability to adjust leaf traits to different environmental conditions, reflected by higher intraspecific variation in leaf traits measured across various microhabitats.
520 $a From 23 late-successional tree species evaluated, those with high intraspecific variability in leaf mass per unit leaf area (specific leaf mass; SLM) showed higher survival and growth rates across different microhabitats of early successional environments than species with low variability in SLM, while for twelve late-successional tree species evaluated, those species with low mean SLM measured in sun (pastures) or shade (secondary forest) leaves showed higher growth rates in height when growing in abandoned pastures with long-lasting high light conditions (incoming vegetation was cut once a month to mimic pastures under arrested succession). Maximal tree height was related to variation in SLM but it was not correlated to survival and growth rates in early successional ecosystems and neither in pastures. Leaf traits offer easily measurable variables that may provide criteria for selection of species for planting mixed species stands. This alleviates the need to individually screen large numbers of late-successional species for performance in different scenarios of restoration (i.e. early successional ecosystems, pastures).
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791 $a Ph.D.
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