Seed limitation of woody plants in Neotropical savannas
The failure of seeds to arrive at all suitable sites (seed limitation) greatly affects plant distribution and abundance. In contrast to tropical forests, the degree of seed limitation in Neotropical savannas is unclear because empirical studies at the community level are scarce. We estimated seed li...
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2012
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 12981caa a22011177a 4500 | ||
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| 001 | PAPER-9904 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203953.0 | ||
| 008 | 190411s2012 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-84856259728 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a PLECF | ||
| 100 | 1 | |a Salazar, A. | |
| 245 | 1 | 0 | |a Seed limitation of woody plants in Neotropical savannas |
| 260 | |c 2012 | ||
| 270 | 1 | 0 | |m Salazar, A.; Department of Biology, University of Miami, P.O. Box 249118, Coral Gables, FL 33124, United States; email: ana@bio.miami.edu |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a The failure of seeds to arrive at all suitable sites (seed limitation) greatly affects plant distribution and abundance. In contrast to tropical forests, the degree of seed limitation in Neotropical savannas is unclear because empirical studies at the community level are scarce. We estimated seed limitation of 23 woody species from annual seed rain measurements along a tree density gradient in the savannas of Central Brazil. These savannas differ in tree density and canopy cover, from closed to open savannas, and are located along shallow topographic gradients. We also studied post-dispersal seed predation and removal of 17 representative woody species, and seed viability loss over time of 12 common woody species under dry-storage conditions. Annual seed rain was lower in open (410 seeds/m 2) than in closed savannas (773 seeds/m 2). Average seed limitation across woody species was higher than 80% along the tree density gradient. More than 60% of seeds of the studied woody species were predated or removed within 30-45 days in all savannah types. Seeds of most common woody species (66%) lost their viability in less than 12 months of dry storage. This study shows that Neotropical savannah woody plants are strongly seed-limited because of low and poor distribution of seeds among sites, post-dispersal seed removal, and short seed longevity. The high seed limitation of tree species in Neotropical savannas, particularly in open savannas, also may contribute to maintain their relatively low tree densities and help to explain the spatial variation of tree abundance along topographic gradients. © 2011 Springer Science+Business Media B.V. |l eng | |
| 536 | |a Detalles de la financiación: National Science Foundation, 0322051 | ||
| 536 | |a Detalles de la financiación: University of Miami | ||
| 536 | |a Detalles de la financiación: Acknowledgments This study was supported by grants from the National Science Foundation (USA) [0322051 to F.M.W]; University of Miami Center for Latin American Studies, and J. Gerry Curtis Plant Sciences Scholarship to A.S. We thank the IBGE reserve for logistic support. We thank Daniel Ramirez, Randol Villalobos, Mariana Saraceno and Marina Scallon for providing field assistance. We thank D. Janos, L. Sternberg, and C. C. Baskin for comments on earlier versions of this manuscript. | ||
| 593 | |a Department of Biology, University of Miami, P.O. Box 249118, Coral Gables, FL 33124, United States | ||
| 593 | |a Laboratorio de Ecologia Funcional, Departamento de Ecologia, Genetica y Evolucion, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Nuñez, Buenos Aires, Argentina | ||
| 593 | |a Departamento de Botânica, Universidade de Brasilia, Caixa Postal 04457, Brasilia DF 70919-970, Brazil | ||
| 593 | |a Department of Civil and Environmental Engineering, Florida International University, 10555 W. Flagler Street, EC 3680, Miami, FL 33174, United States | ||
| 690 | 1 | 0 | |a CERRADO |
| 690 | 1 | 0 | |a SEED DISPERSAL |
| 690 | 1 | 0 | |a SEED REMOVAL |
| 690 | 1 | 0 | |a SEED VIABILITY |
| 690 | 1 | 0 | |a ABUNDANCE |
| 690 | 1 | 0 | |a CERRADO |
| 690 | 1 | 0 | |a LONGEVITY |
| 690 | 1 | 0 | |a NEOTROPICAL REGION |
| 690 | 1 | 0 | |a SAVANNA |
| 690 | 1 | 0 | |a SEED DISPERSAL |
| 690 | 1 | 0 | |a SEED RAIN |
| 690 | 1 | 0 | |a TOPOGRAPHIC MAPPING |
| 690 | 1 | 0 | |a VIABILITY |
| 690 | 1 | 0 | |a WOODY PLANT |
| 690 | 1 | 0 | |a BRAZIL |
| 700 | 1 | |a Goldstein, G. | |
| 700 | 1 | |a Franco, A.C. | |
| 700 | 1 | |a Miralles-Wilhelm, F. | |
| 773 | 0 | |d 2012 |g v. 213 |h pp. 273-287 |k n. 2 |p Plant Ecol. |x 13850237 |t Plant Ecology | |
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