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      Estructura del manglar y su influencia en el almacén de carbono en la Reserva La Encrucijada, Chiapas, México Translated title: Mangrove structure and its influence on the carbon storage in La Encrucijada Reserve, Chiapas, Mexico

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          Abstract

          Resumen: Se ha destacado la importancia de los manglares en el almacén de carbono, el cual se estima que supera significativamente al contenido de los bosques terrestres. Aunque la cuantificación del carbono en el componente arbóreo de los manglares se ha realizado en varias regiones de México, la costa del Pacífico sur ha sido escasamente analizada. El objetivo de este estudio fue evaluar la estructura de los manglares ribereños en 32 unidades de muestreo circulares (400 m2) en la Reserva La Encrucijada, Chiapas, caracterizando su altura, cobertura, diámetro a la altura del pecho y la estimación de los índices de complejidad y valor de importancia; así como su relación con el almacén de carbono. El carbono se cuantificó con ecuaciones alométricas para especies de mangles neotropicales con alto desarrollo estructural y el factor de conversión de biomasa a carbono de 0.48. La influencia de las variables estructurales e intersticiales (pH, salinidad, temperatura) en el carbono almacenado se determinó con análisis de varianza y covarianza. El manglar presentó una densidad de 2103 individuos por hectárea (ind ha-1) y valores promedio de altura de 12 m; de área basal, 18.7 m2 ha-1; cobertura, 9.9 m2 y diámetro a la altura del pecho, 8.4 cm. Se registró un índice de complejidad de 40.1; el orden de importancia de las especies fue Rhizophora mangle/Avicennia germinans/Laguncularia racemosa. El almacén de carbono arbóreo fue 87.0 Mg ha-1. Los parámetros estructurales presentaron alta correlación (R = 1.0, 0.94 y 0.85) con la biomasa del manglar. Según su estructura, este ecosistema se clasificó en la etapa sucesional de comunidad intermedia y con alta complejidad estructural.

          Translated abstract

          Abstract : Mangroves have been considered as an important carbon storage, and in general, exceeding the carbon content of terrestrial forests. Even when mangrove aerial carbon sequestration has been studied in several regions of Mexico, the information at the Pacific coast is lacking. The aim of this work was to characterize the structure of riverine mangroves in order to determine height, coverage, DBH and to estimate the complexity and importance value indexes, as well to relate it with the carbon storage, in 32 circular sampling units (400 m2) at La Encrucijada Reserve, Chiapas. The carbon content was quantified according allometric equations for Neotropical mangrove species, with high structural development and we used a biomass to carbon conversion factor of 0.48. The influence of the interstitial sediment parameters (pH, salinity, temperature) on the stored carbon was determined using an analysis of variance and covariance. Mangrove density was 2103 ind ha-1, the tree mean height was 12 m; basal area, 18.7 m2 ha-1; coverage, 9.9 m2 and DAP, 8.4 cm. A complexity index of 40.1 was recorded; the order of importance of the species was Rhizophora mangle / Avicennia germinans / Laguncularia racemosa. The carbon store was 87.0 Mg ha-1. Structural parameters showed a high correlation (R = 1.00, 0.94 and 0.84) with the mangrove biomass. In function of this structure, this ecosystem was classified as a successional stage of intermediate community with a high structural complexity.

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          The Ecology of Mangroves

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            An Upland Forest Continuum in the Prairie-Forest Border Region of Wisconsin

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              Carbon Stocks of Tropical Coastal Wetlands within the Karstic Landscape of the Mexican Caribbean

              Coastal wetlands can have exceptionally large carbon (C) stocks and their protection and restoration would constitute an effective mitigation strategy to climate change. Inclusion of coastal ecosystems in mitigation strategies requires quantification of carbon stocks in order to calculate emissions or sequestration through time. In this study, we quantified the ecosystem C stocks of coastal wetlands of the Sian Ka'an Biosphere Reserve (SKBR) in the Yucatan Peninsula, Mexico. We stratified the SKBR into different vegetation types (tall, medium and dwarf mangroves, and marshes), and examined relationships of environmental variables with C stocks. At nine sites within SKBR, we quantified ecosystem C stocks through measurement of above and belowground biomass, downed wood, and soil C. Additionally, we measured nitrogen (N) and phosphorus (P) from the soil and interstitial salinity. Tall mangroves had the highest C stocks (987±338 Mg ha−1) followed by medium mangroves (623±41 Mg ha−1), dwarf mangroves (381±52 Mg ha−1) and marshes (177±73 Mg ha−1). At all sites, soil C comprised the majority of the ecosystem C stocks (78–99%). Highest C stocks were measured in soils that were relatively low in salinity, high in P and low in N∶P, suggesting that P limits C sequestration and accumulation potential. In this karstic area, coastal wetlands, especially mangroves, are important C stocks. At the landscape scale, the coastal wetlands of Sian Ka'an covering ≈172,176 ha may store 43.2 to 58.0 million Mg of C.
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                Author and article information

                Journal
                mb
                Madera y bosques
                Madera bosques
                Instituto de Ecología A.C. (Xalapa, Veracruz, Mexico )
                1405-0471
                2448-7597
                2019
                : 25
                : 3
                : e2531885
                Affiliations
                [2] Tapachula Chiapas orgnameEl Colegio de la Frontera Sur orgdiv2Departamento de Ciencias de la Sustentabilidad Mexico
                [3] Tonalá orgnameUniversidad de Ciencias y Artes de Chiapas orgdiv1Instituto de Ciencias Biológicas orgdiv2Centro de Investigaciones Costeras Mexico
                [1] Tapachula Chiapas orgnameEl Colegio de la Frontera Sur orgdiv2Programa de Maestría en Ciencias en Recursos naturales y Desarrollo rural Mexico
                [4] Chetumal Quintana Roo orgnameEl Colegio de la Frontera Sur orgdiv1Unidad Chetumal orgdiv2Departamento de Sistemática y Ecología Acuática Mexico
                Article
                S1405-04712019000300215 S1405-0471(19)02500300215
                10.21829/myb.2019.2531885
                383882be-e18f-4c5d-9e8c-7a455b21633f

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 11 November 2018
                : 06 March 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 51, Pages: 0
                Product

                SciELO Mexico

                Categories
                Artículos científicos

                structural complexity,importance value,carbono azul,riverine forest,blue carbon,complejidad estructural,aerial biomass,biomasa aérea,valor de importancia,bosque ribereño

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