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Abstract:

In many Northern Hemisphere salt marshes, recovery of disturbance-generated bare areas usually occurs within a few years. However, in some southwestern Atlantic marshes, bare patches may remain unchanged for several years. Here we investigated biological and physical factors that might affect bare patch colonization in a Mar Chiquita coastal lagoon salt marsh (Argentina). We evaluated natural seedling emergence of the pioneer pickleweed plant Sarcocornia perennis, considering distance to mature plants and the herbivory/bioturbation exerted by the crab Neohelice granulata (using exclosures). Almost no seedling emergence was observed in patches distant from mature plants, while higher emergence resulted in close patches. Crab exclusion did not affect seedling counts. Nevertheless, most of these seedlings did not survive high-temperature months. We analyzed if colonization was favored by increasing the availability of S. perennis seeds, and we found similar seedling emergence in patches both close and distant to mature plants. As in the previous experiment, most of them did not survive the high-temperature months, but some seedlings could establish within crab exclosures. Finally, we used a shade cloth to reduce solar radiation, but this did not increase seedling survival, which was only favored in crab exclosures. In summary, our results suggest that seed availability, followed by the presence of crabs (but not solar radiation), affect the rate of patch recovery. Additionally, our results show that life-history traits (seed ecology) of the colonizer can be a key and are a usually overlooked driver of salt marsh secondary succession. © 2015 Inter-Research.

Registro:

Documento: Artículo
Título:Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh
Autor:Kaminsky, J.; Alberti, J.; Aguiar, M.; Iribarne, O.
Filiación:Facultad de Agronomía, Cátedra de Ecología, Instituto de Investigaciones en Fisiología y Ecología Vinculadas A la Agricultura, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad de Buenos Aires, Buenos Aires, Argentina
Facultad de Ciencias Exactas y Naturales (FCEyN), Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Mar Del Plata (UNMDP), Mar del Plata, Argentina
Palabras clave:Bioturbation; Colonization; Neohelice (Chasmagnathus) granulata; Patch dynamics; Salt patches; Sarcocornia perennis; Seed dispersal; Seedling emergence; bioturbation; coastal lagoon; colonization; crab; dicotyledon; environmental disturbance; environmental factor; exclusion experiment; herbivory; high temperature; life history trait; Northern Hemisphere; patch dynamics; pioneer species; saltmarsh; secondary succession; seed dispersal; seedling emergence; survival; Argentina; Atlantic Ocean; Atlantic Ocean (Southwest); Cordoba [Argentina]; Mar Chiquita; Chasmagnathus; Decapoda (Crustacea); Salicornia; Sarcocornia perennis
Año:2015
Volumen:531
Página de inicio:33
Página de fin:41
DOI: http://dx.doi.org/10.3354/meps11328
Título revista:Marine Ecology Progress Series
Título revista abreviado:Mar. Ecol. Prog. Ser.
ISSN:01718630
CODEN:MESED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01718630_v531_n_p33_Kaminsky

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Citas:

---------- APA ----------
Kaminsky, J., Alberti, J., Aguiar, M. & Iribarne, O. (2015) . Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh. Marine Ecology Progress Series, 531, 33-41.
http://dx.doi.org/10.3354/meps11328
---------- CHICAGO ----------
Kaminsky, J., Alberti, J., Aguiar, M., Iribarne, O. "Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh" . Marine Ecology Progress Series 531 (2015) : 33-41.
http://dx.doi.org/10.3354/meps11328
---------- MLA ----------
Kaminsky, J., Alberti, J., Aguiar, M., Iribarne, O. "Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh" . Marine Ecology Progress Series, vol. 531, 2015, pp. 33-41.
http://dx.doi.org/10.3354/meps11328
---------- VANCOUVER ----------
Kaminsky, J., Alberti, J., Aguiar, M., Iribarne, O. Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh. Mar. Ecol. Prog. Ser. 2015;531:33-41.
http://dx.doi.org/10.3354/meps11328