Términos relacionados

12 resultados encontrados para: AUTOR: Lugo, Ariel E.
  • «
  • 1 de 2
  • »
1.
- Artículo con arbitraje
Conservative nutrient use by big-leaf mahogany (Swietenia macrophylla king) planted under contrasting environmental conditions
Medina, Ernesto ; Cuevas Viera, Elvira (coaut.) (1950-) ; Lugo, Ariel E. (coaut.) ; Terezo, Evaristo (coaut.) ; Jiménez Osornio, Juan José María (coaut.) ; Macario Mendoza, Pedro A. (coaut.) ; Montañez Escalante, Patricia Irene (coaut.) ;
Contenido en: Revista Árvore Vol. 38, no. 3 (May/June 2014), p. 479-488 ISSN: 0100-6762
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030001038 (Disponible)
Disponibles para prestamo: 1
PDF
Resumen en: Inglés | Frances |
Resumen en inglés

We analyzed the nutritional composition and isotope ratios (C and N) of big-leaf mahogany (Swietenia macrophylla King) leaves in plantations established on contrasting soils and climates in Central America (State of Quintana Roo, Yucatán, México) and South America (State of Pará, Brazil). The objective was to determine the adaptability of this species to large differences in nutrient availability and rainfall regimes. Nutrient concentrations of leaves and soils were determined spectrophotometrically, and isotope ratios were measured using mass spectrometric techniques.In Pará soils were sandier, and acidic, receiving above 2000 mm of rain, whereas in Quintana Roo soils were predominantly clayey, with neutral to alkaline pH due to the underlying calcareous substrate, with about 1300 mm of rain. Leaf area/weight ratio was similar for both sites, but leaves from Quintana Roo were significantly smaller. Average N and K concentrations of adult leaves were similar, whereas Ca concentration was only slightly lower in Pará in spite of large differences in Ca availability. Leaves from this site had slightly higher P and lower Al concentrations. Differences in water use efficiency as measured by the natural abundance of 13C were negligible, the main effect of lower rainfall in Quintana Roo seemed to be a reduction in leaf area. The N isotope signature (δ15N) was more positive in Pará than in Quintana Roo, suggesting higher denitrification rates in the former. Results reveal a calciotrophic behavior and a remarkable capacity of mahogany to compensate for large differences in soil texture and nutrient availability.

Resumen en frances

Analisou-se a composição nutricional e isotópica (C e N) de folhas de mogno (. Swietenia macrophylla King) em plantações estabelecidas em solos e climas contrastantes na América Central (Quintana Roo, Yucatán, México) e na América do Sul (Pará, Brasil). O objetivo foi determinar a adaptabilidade dessa espécie para grandes diferenças na disponibilidade de nutrientes e regimes de chuva. As concentrações de nutrientes das folhas e solos foram determinadas espectrofotometricamente, e razões isotópicas foram medidas utilizando espectrometria de massa. No Pará, os solos foram mais arenosos e ácidos, recebendo acima de 2.000 mm de chuva, enquanto em Quintana Roo os solos foram predominantemente argilosos, com pH neutro a alcalino, devido ao substrato calcário subjacente, com cerca de 1.300 mm de chuva. A razão área/peso foliar foi semelhante para ambos os sítios de estudo, mas em Quintana Roo as folhas foram significativamente menores. Concentrações de N e K em folhas adultas foram semelhantes. A concentração de Ca foi apenas ligeiramente inferior no Pará, apesar das grandes diferenças na disponibilidade de Ca. Folhas desse sítio possuíam concentrações ligeiramente maiores de P e menores de Al. Diferenças na eficiência do uso da água medida pela δ13C foram insignificantes, e o principal efeito da menor precipitação em Quintana Roo parece ser uma redução na área foliar. Assinatura isotópica do N (δ 15N) foi mais positiva no Pará, que em Quintana Roo, sugerindo maiores taxas de desnitrificação no primeiro sítio de estudo. Os resultados revelaram comportamento calciotrófico e uma notável capacidade do mogno para compensar as grandes diferenças de textura e disponibilidade de nutrientes do solo.


2.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Factors affecting mortality and resistance to damage following hurricanes in a rehabilitated subtropical moist forest
Ostertag, Rebecca ; Silver, Whendee L. (coaut.) ; Lugo, Ariel E. (coaut.) ;
Contenido en: Biotropica Vol. 37, no. 1 (March 2005), p. 16-24 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
B4572 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal

3.
Artículo
*En hemeroteca, SIBE-San Cristóbal
The influence of hurricane winds on caribbean dry forest structure and nutrient pools
Van Bloem, Skip J. ; Murphy, Peter G. (coaut.) ; Lugo, Ariel E. (coaut.) ; Ostertag, Rebecca (coaut.) ; Rivera Costa, María (coaut.) ;
Contenido en: Biotropica Vol. 37, no. 4 (December 2005), p. 571-583 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
B8692 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF

4.
Artículo
*En hemeroteca, SIBE-San Cristóbal
A flood plain palm forest in the Luquillo mountains of Puerto Rico five years after hurricane Hugo
Frangi, Jorge L. ; Lugo, Ariel E. (coaut.) ;
Contenido en: Biotropica Vol. 30, no. 3 (Septiembre 1998), p. 339-348 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
B8869 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF

5.
Artículo
*En hemeroteca, SIBE-San Cristóbal
A twelve - year comparison of stand changes in a mahogany plantation and a paired natural forest of similar age
Fu, Shenglei ; Rodríguez Pedraza, Carlos (coaut.) ; Lugo, Ariel E. (coaut.) ;
Contenido en: Biotropica Vol. 28, no. 4a (December 1996), p. 515-524 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
B8965 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF

6.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Management of tropical biodiversity
Lugo, Ariel E. ;
Contenido en: Ecological Applications Vol. 5, no. 4, (november 1995) p. 956-961 ISSN: 1051-0761
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
28453-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal

7.
Libro
Tropical forests: management and ecology / Ariel E. Lugo, Carol Lowe, editors
Lugo, Ariel E. (ed.) ; Lowe, Coral (coed.) ;
New York : Springer-Verlag , 1995
Clasificación: 574.52642 / T75
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
SAA000121 (Disponible)
Disponibles para prestamo: 1

8.
Libro
Resumen en: Inglés |
Resumen en inglés

Most of the attention with respect to the increase in atmospheric greenhouse gas concentrations centers around three issues: human-generated sources of carbon, mostly from burning fossil fuels; tropical deforestation, which accelerates the production of atmospheric carbon while causting havoc with biodiversity and the economic development of tropical countries; and the temperature increase that may accompany increased atmospheric greenhouse gas concentrations. This is the first book to focus extensively on the reverse to emissions of carbon dioxide (CO2), i.e. the sequestering of atmospheric carbon by aquatic and terrestrial ecosystems. Natural ecosystems are currently sequestering carbon and it is economically feasible to manage existing and additional terrestrial (forest, soil, saline land) and aquatic (coastal, wetland and ocean) ecosystems to substantially increase the level of carbon storage. The prospect of managing natural systems to absorb additional carbon should begin to change the mindset under which scientists, policy makers and society deal with the issue of further greenhouse gas increases.


9.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Hurricane damage to a flood plain forest in the luquillo mountains of Puerto Rico
Frangi, Jorge L. ; Lugo, Ariel E. (coaut.) ;
Contenido en: Biotropica Vol. 23, no. 4a (December 1991), p. 324-335 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
B8768 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF

10.
Artículo
*Solicítelo con su bibliotecario/a
Ecology of tropical dry forest
Murphy, Peter G. (autor) ; Lugo, Ariel E. (autor) ;
Disponible en línea
Contenido en: Annual Review of Ecology and Systematics Vol. 17 (1986), p. 67-88 ISSN: 0066-4162
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
34630-20 (Disponible)
Disponibles para prestamo: 1
Nota: Solicítelo con su bibliotecario/a
PDF