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No. de sistema: 000022450

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 170807m20179999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-qr
044 _ _ a| xx
245 0 0 a| Remnant trees in enrichment planted gaps in Quintana Roo, Mexico
b| reasons for retention and effects on seedlings
520 1 _ a| Natural forest management in the tropics is often impeded by scarcity of advanced regeneration of commercial species. To supplement natural regeneration in a forest managed by a community in the Selva Maya of Mexico, nursery-grown Swietenia macrophylla seedlings were planted in multiple-tree felling gaps, known as bosquetes. Remnant trees are often left standing in gaps for cultural and economic reasons or due to their official protected status. We focus on these purposefully retained trees and their impacts on planted seedlings. Sampled bosquetes were 400–1800 m², of which remnant trees covered a mean of 29%. Seedling height growth rates over the first 18 months after out-planting more than doubled with increased canopy openness from 0.09 m year-¹ under medium cover to 0.22 m year-¹ in full sun. Liana infestations and shoot tip damage were most frequent on seedlings in the open, but, contrary to our expectations, height growth rates were 0.14 m year-¹ faster for liana-infested seedlings than non-infested and did not differ between damaged and undamaged seedlings. Apparently the more rapid height growth of well-illuminated seedlings more than compensated for the effects of lianas or shoot tip damage. Despite the abundance of remnant trees and their negative effects on seedling growth, enrichment planting in bosquetes has potential for community-based natural forest management in the tropics in supplementing natural regeneration of commercial species. One obvious recommendation is to leave fewer remnant trees, especially those of commercial species that are non-merchantable due to stem defects and trees retained for no apparent reason, which together constituted half of the remnant crown cover in the sampled bosquetes. Finally, given the rapid growth of lianas and understory palms in large canopy gaps, at least the most vigorous of the planted seedlings should be tended for at least two years.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Árboles forestales
650 _ 4 a| Ordenación forestal
650 _ 4 a| Silvicultura comunitaria
650 _ 4 a| Silvicultura sostenible
650 _ 4 a| Bosques tropicales
651 _ 4 a| Noh-Bec, Felipe Carrillo Puerto (Quintana Roo, México)
700 1 _ a| Navarro Martínez, María Angélica
c| Doctora
700 1 _ a| Palmas, Sebastian
e| coaut.
700 1 _ a| Ellis, Edward A.
e| coaut.
700 1 _ a| Blanco Reyes, Pascual
e| coaut.
700 1 _ a| Vargas Godínez, Carolina
e| coaut.
700 1 _ a| Iuit Jiménez, Ana Cecilia
e| coaut.
700 1 _ a| Hernández Gómez, Irving Uriel
e| coaut.
700 1 _ a| Ellis, Peter
e| coaut.
700 1 _ a| Álvarez Ugalde, Alfredo
e| coaut.
700 1 _ a| Carrera Quirino, Yavé Guadalupe
e| coaut.
700 1 _ a| Armenta Montero, Samaria
e| coaut.
700 1 _ a| Putz, Francis E.
e| coaut.
773 0 _
t| Forests
g| Vol. 8, no. 272 (July 2017), p. 1-11
x| 1999-4907
856 4 1 u| http://www.mdpi.com/1999-4907/8/8/272
z| Artículo electrónico
856 _ _ u| http://aleph.ecosur.mx:8991/F?func=service&doc_library=CFS01&local_base=CFS01&doc_number=000022450&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
y| Artículo electrónico
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Agosto 2017
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Servibosques
905 _ _ a| Biblioelectrónica
LNG eng
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Inglés

"Natural forest management in the tropics is often impeded by scarcity of advanced regeneration of commercial species. To supplement natural regeneration in a forest managed by a community in the Selva Maya of Mexico, nursery-grown Swietenia macrophylla seedlings were planted in multiple-tree felling gaps, known as bosquetes. Remnant trees are often left standing in gaps for cultural and economic reasons or due to their official protected status. We focus on these purposefully retained trees and their impacts on planted seedlings. Sampled bosquetes were 400–1800 m², of which remnant trees covered a mean of 29%. Seedling height growth rates over the first 18 months after out-planting more than doubled with increased canopy openness from 0.09 m year-¹ under medium cover to 0.22 m year-¹ in full sun. Liana infestations and shoot tip damage were most frequent on seedlings in the open, but, contrary to our expectations, height growth rates were 0.14 m year-¹ faster for liana-infested seedlings than non-infested and did not differ between damaged and undamaged seedlings. Apparently the more rapid height growth of well-illuminated seedlings more than compensated for the effects of lianas or shoot tip damage. Despite the abundance of remnant trees and their negative effects on seedling growth, enrichment planting in bosquetes has potential for community-based natural forest management in the tropics in supplementing natural regeneration of commercial species. One obvious recommendation is to leave fewer remnant trees, especially those of commercial species that are non-merchantable due to stem defects and trees retained for no apparent reason, which together constituted half of the remnant crown cover in the sampled bosquetes. Finally, given the rapid growth of lianas and understory palms in large canopy gaps, at least the most vigorous of the planted seedlings should be tended for at least two years."


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