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Effects of soil flooding, sunlight and herbivory on seedlings of Annona glabra and Pachira aquatica in a tropical swamp

Infante Mata, Dulce María [autora] | Moreno Casasola, Patricia [autora] | Valverde, Teresa [autora] | Maza Villalobos Méndez, Susana [autora].
Tipo de material: Artículo
 en línea Artículo en línea Tema(s): Annona glabra | Pachira aquatica | Biomasa vegetal | Herbivoría | Factores ambientales | Ecología de tierras húmedas | Restauración ecológica | Biología y química Ciencias de la vida Biología vegetal (Botánica) -- Desarrollo vegetalTema(s) en inglés: Annona glabra | Pachira aquatica | Plant biomass | Herbivory | Environmental factors | Wetland ecology | Restoration ecologyDescriptor(es) geográficos: Laguna de la Mancha, Actopán (Veracruz de Ignacio de la Llave, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Wetlands Ecology and Management. volumen 27, número 4 (August 2019), páginas 539-551. --ISSN: 1572-9834Número de sistema: 59985Resumen:
Inglés

Wetland seedlings, in addition to dealing with the effects of flooding, must gain access to sunlight and avoid herbivore damage in order to establish. Understanding the effects of environmental factors on seedling growth and how plants modify their functional traits in response to them, is a challenge of wetland ecology. We evaluated the effects of different conditions of soil flooding (flooded and mesic), sunlight (closed and no canopy) and herbivory (presence and absence) on the survival, growth, and morphological traits of Annona glabra and Pachira aquatica seedlings, two dominant woody species of Neotropical swamps. We had eight experimental treatments with five replicates each. Our results showed that the survival of both species was high and was not affected by soil flooding, sunlight and herbivory. However, these factors affected plant growth rates. In general, the highest growth rates were observed in the treatment with high sunlight, mesicsoil and herbivore exclusion.

Both species displayed higher leaf biomass allocation under closed than under no canopy. Furthermore, under closed canopy conditions both species produced relatively more slender and taller stems, which may allow them to intercept light more efficiently. Also, both species showed low belowground biomass allocation in flooded soils, probably as a consequence of a high anoxic condition. Our results confirmed that soil flooding, sunlight and herbivory are important factors that influence the growth patterns of A. glabra and P. aquatica seedlings, but they do not affect seedling survival. This information may help resource managers to identify high-quality sites that deserve to be protected. Also, the knowledge on species responses to different environmental conditions may be useful in restoration programs for tropical swamp forests.

Recurso en línea: https://link.springer.com/article/10.1007%2Fs11273-019-09676-1
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Disponible para usuarios de ECOSUR con su clave de acceso

Wetland seedlings, in addition to dealing with the effects of flooding, must gain access to sunlight and avoid herbivore damage in order to establish. Understanding the effects of environmental factors on seedling growth and how plants modify their functional traits in response to them, is a challenge of wetland ecology. We evaluated the effects of different conditions of soil flooding (flooded and mesic), sunlight (closed and no canopy) and herbivory (presence and absence) on the survival, growth, and morphological traits of Annona glabra and Pachira aquatica seedlings, two dominant woody species of Neotropical swamps. We had eight experimental treatments with five replicates each. Our results showed that the survival of both species was high and was not affected by soil flooding, sunlight and herbivory. However, these factors affected plant growth rates. In general, the highest growth rates were observed in the treatment with high sunlight, mesicsoil and herbivore exclusion. eng

Both species displayed higher leaf biomass allocation under closed than under no canopy. Furthermore, under closed canopy conditions both species produced relatively more slender and taller stems, which may allow them to intercept light more efficiently. Also, both species showed low belowground biomass allocation in flooded soils, probably as a consequence of a high anoxic condition. Our results confirmed that soil flooding, sunlight and herbivory are important factors that influence the growth patterns of A. glabra and P. aquatica seedlings, but they do not affect seedling survival. This information may help resource managers to identify high-quality sites that deserve to be protected. Also, the knowledge on species responses to different environmental conditions may be useful in restoration programs for tropical swamp forests. eng

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