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No. de sistema: 000025009

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 170629m20179999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-tb
a| n-mx-ca
044 _ _ a| xx
245 0 0 a| Flood pulse induced changes in isotopic niche and resource utilization of consumers in a Mexican floodplain system
506 _ _ a| Disponible para usuarios de ECOSUR con su clave de acceso
520 1 _ a| Tropical coastal ecosystems of the southern Gulf of Mexico including marshes, mangroves and seagrasses of Centla Wetlands and Terminos Lagoon (Grijalva-Usumacinta delta) are known to host a high diversity of aquatic consumers. Nevertheless, the limited research focusing on the energy fluxes that sustain consumers has as yet neither considered the strong seasonality of these systems, nor the linkage of the trophic flow patterns with ecosystem functioning. The present work analyses and compares stable isotope ratios (δ¹³C and δ ¹³5N) of consumers during the dry and rainy season at different wetland sites to determine their resource utilization. The sites compared comprise three fluvio-lagoons and a coastal mangrove creek that differ in vegetational characteristics, distance to the sea, and freshwater input. The results support the hypothesis that a larger isotopic niche breadth of consumers prevails during the rainy season, when resource availability is supposedly higher. This translates into an increase in resource use diversification by consumers and corroborates the flood pulse concept (FPC), which can be particularly applied to those habitats with high riverine influence in the study area (e.g., fluvio-lagoons). However, the FPC alone cannot be applied to understand the main factors influencing the fate and utilization of basal resources in areas interacting more actively with the sea, and therefore further extensions and/or complementary conceptual approaches considering marine systems highly interconnected with coastal floodplains should be considered.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Humedales
650 _ 4 a| Isotopos
650 _ 4 a| Ecosistemas costeros
651 _ 4 a| Reserva de la Biosfera Pantanos de Centla (Tabasco, México)
651 _ 4 a| Área de Protección de Flora y Fauna Laguna de Términos (Campeche, México)
700 1 _ a| Sepúlveda Lozada, Alejandra
700 1 _ a| Saint Paul, Ulrich
e| coaut.
700 1 _ a| Mendoza Carranza, Manuel
c| Dr.
e| coaut.
700 1 _ a| Wolff, Matthias
e| coaut.
700 1 _ a| Yáñez Arancibia, Alejandro
e| coaut.
773 0 _
t| Aquatic Sciences
g| Vol. 79, no. 3 (July 2017), p. 597–616
x| 1420-9055
900 _ _ a| Solicítelo con su bibliotecario/a
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Junio 2017
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
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*Solicítelo con su bibliotecario/a
Flood pulse induced changes in isotopic niche and resource utilization of consumers in a Mexican floodplain system
Sepúlveda Lozada, Alejandra (autor)
Saint Paul, Ulrich (autor)
Mendoza Carranza, Manuel (autor)
Wolff, Matthias (autor)
Yáñez Arancibia, Alejandro (autor)
Nota: Disponible para usuarios de ECOSUR con su clave de acceso
Contenido en: Aquatic Sciences. Vol. 79, no. 3 (July 2017), p. 597–616. ISSN: 1420-9055
No. de sistema: 25009
Tipo: - Artículo con arbitraje
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Inglés

"Tropical coastal ecosystems of the southern Gulf of Mexico including marshes, mangroves and seagrasses of Centla Wetlands and Terminos Lagoon (Grijalva-Usumacinta delta) are known to host a high diversity of aquatic consumers. Nevertheless, the limited research focusing on the energy fluxes that sustain consumers has as yet neither considered the strong seasonality of these systems, nor the linkage of the trophic flow patterns with ecosystem functioning. The present work analyses and compares stable isotope ratios (δ¹³C and δ ¹³5N) of consumers during the dry and rainy season at different wetland sites to determine their resource utilization. The sites compared comprise three fluvio-lagoons and a coastal mangrove creek that differ in vegetational characteristics, distance to the sea, and freshwater input. The results support the hypothesis that a larger isotopic niche breadth of consumers prevails during the rainy season, when resource availability is supposedly higher. This translates into an increase in resource use diversification by consumers and corroborates the flood pulse concept (FPC), which can be particularly applied to those habitats with high riverine influence in the study area (e.g., fluvio-lagoons). However, the FPC alone cannot be applied to understand the main factors influencing the fate and utilization of basal resources in areas interacting more actively with the sea, and therefore further extensions and/or complementary conceptual approaches considering marine systems highly interconnected with coastal floodplains should be considered."


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