Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh

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 p...

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Autores principales:	Kaminsky, J., Alberti, J., Aguiar, M., Iribarne, O.
Formato:	JOUR
Materias:	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
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01718630_v531_n_p33_Kaminsky
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_01718630_v531_n_p33_Kaminsky
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spelling	todo:paper_01718630_v531_n_p33_Kaminsky2023-10-03T15:07:35Z Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh Kaminsky, J. Alberti, J. Aguiar, M. Iribarne, O. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01718630_v531_n_p33_Kaminsky
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 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
topic_facet	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
description	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.
format	JOUR
author	Kaminsky, J. Alberti, J. Aguiar, M. Iribarne, O.
author_facet	Kaminsky, J. Alberti, J. Aguiar, M. Iribarne, O.
author_sort	Kaminsky, J.
title	Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh
title_short	Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh
title_full	Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh
title_fullStr	Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh
title_full_unstemmed	Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh
title_sort	biological and physical factors affecting the colonization of vegetation-free patches in a sw atlantic salt marsh
url	http://hdl.handle.net/20.500.12110/paper_01718630_v531_n_p33_Kaminsky
work_keys_str_mv	AT kaminskyj biologicalandphysicalfactorsaffectingthecolonizationofvegetationfreepatchesinaswatlanticsaltmarsh AT albertij biologicalandphysicalfactorsaffectingthecolonizationofvegetationfreepatchesinaswatlanticsaltmarsh AT aguiarm biologicalandphysicalfactorsaffectingthecolonizationofvegetationfreepatchesinaswatlanticsaltmarsh AT iribarneo biologicalandphysicalfactorsaffectingthecolonizationofvegetationfreepatchesinaswatlanticsaltmarsh
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Biological and physical factors affecting the colonization of vegetation-free patches in a SW Atlantic salt marsh

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