Distribution and bioconcentration of heavy metals in a tropical aquatic food web: A case study of a tropical estuarine lagoon in SE Mexico

Mendoza‐Carranza, Manuel; Sepúlveda-Lozada, Alejandra; Dias-Ferreira, Célia; Geissen, Violette

doi:10.1016/j.envpol.2015.12.014

Cited by 98 publications

(38 citation statements)

References 62 publications

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“…Cities such as Minatitlán, and Coatzacoalcos which have a very low score in the composite vulnerability are expected to experience the largest changes in climate. Moreover, the areas where these cities are located already face significant challenges due environmental pollution form the oil industry which have affected ecosystems' health (Mendoza-Carranza et al, 2016;Ruiz-Fernández et al, 2016).…”

Section: Climate Change and Sustainability Challengesmentioning

confidence: 99%

An Analysis of Current Sustainability of Mexican Cities and Their Exposure to Climate Change

Estrada

Velasco

Martínez-Arroyo

et al. 2020

Front. Environ. Sci.

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The increasing demand for goods and services in cities around the world due to a rapidly growing urban population is pushing the socioecological systems that support them to their limits. The complexity of urban socioeconomic and environmental systems and their interactions generate a challenging multidimensional decision problem. In response, governments around the world are currently generating a variety of measurements that aim to portrait the main factors that are related to the level of sustainability that a city shows. While the objective of these efforts is to help in the process of urban policy making, these measures are often hard to interpret and do not lend to discover underlying characteristics that may be common among a group of cities. Moreover, these measures are typically focused on describing the current state and omit future challenges such as climate change, which may significantly affect any evaluation of urban sustainability. Recently, the Institute of Ecology and Climate Change (INECC) of Mexico produced a dataset of 36 sustainability related variables for over 100 cities that has the objective of helping federal and state level governments defining sustainable urban strategies. Here we use multivariate statistical techniques to (1) decrease the dimensionality of the dataset and find indices that could be more useful to decision makers; (2) find commonalities among cities include in the dataset in order to help in designing urban strategies for cities with similar characteristics; (3) cities are ranked in terms of their sustainability and characteristics and; (4) the sustainability ranking is compared to estimates of how much the current climate in each of these cities is expected to change during this century, which would add further challenges to maintain or improve urban sustainability.

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Section: Climate Change and Sustainability Challengesmentioning

confidence: 99%

An Analysis of Current Sustainability of Mexican Cities and Their Exposure to Climate Change

Estrada

Velasco

Martínez-Arroyo

et al. 2020

Front. Environ. Sci.

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“…En Lobos y Tóbari se estableció una red de estaciones de muestreo en sitios asociados con actividades antrópicas y en sitios someros de circulación de corrientes lentas (baja energía), así como cerca de las bocas hacia el mar adyacente (energía alta). En 10 sitios de Lobos y en 16 de Tóbari, se obtuvieron muestras de sedimento superficial (10 -15 cm de profundidad) por triplicado con una draga tipo petite ponar (Mendoza-Carranza et al 2016). Los procedimientos utilizados fueron conforme a los métodos recomendados por Instituto Nacional de Ecología y Cambio Climático-Centro de Ciencias de la Atmósfera (INECC-CCA 2010).…”

Section: Muestreounclassified

Calidad De Sedimentos Asociada a Actividades Antrópicas en Lagunas Costeras Semiáridas Subtropicales De La Costa Central Este Del Golfo De California

González¹,

Arreola-Lizárraga²,

Hernández

et al. 2017

Rev. Int. Contam. Ambie.

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Palabras clave: elementos traza, sedimentos estuarinos, índices de contaminación, agricultura, acuicultura RESUMEN La calidad de los sedimentos superficiales de las lagunas costeras Lobos y Tóbari, ambas receptoras de efluentes del Valle del Yaqui, en el Golfo de California, México, fue evaluada. Las concentraciones de níquel, zinc, cobre, cadmio, manganeso, plomo y hierro fueron determinadas en sedimentos de estas lagunas y del estero el Soldado que es un área natural protegida sin descargas antrópicas. El índice de contaminación metálica (ICM), el factor de enriquecimiento (FE) y el índice de geoacumulación (I geo ) fueron calculados. Se utilizaron los valores guía de calidad de sedimento (SQV, por sus siglas en inglés) para valorar el potencial riesgo a la salud de la biota. La laguna Lobos presentó la media de concentración más alta de zinc (70.1 µg/g) y cobre (16.3 µg/g), Tóbari la más alta de manganeso (747 µg/g) y El Soldado la más baja de hierro (1.05 %), así como también el menor ICM. Tanto en la laguna Lobos como en la Tóbari, el manganeso fue el único elemento que presentó un FE que indica influencia antropogénica y un I geo que corresponde a moderado. Los sitios más afectados en ambas lagunas fueron los más cercanos a las zonas agrícolas. Los SQV sugieren que en los sitios con concentraciones de níquel > 51.6μg/g (registrado en un sitio en Lobos) y de manganeso > 260μg/g (Lobos y Tóbari), deben establecerse medidas de mitigación. Lo anterior, dado que a esos niveles, dichos elementos pueden causar efectos adversos y deterioro del habitat que las especies utilizan para su reproducción, crianza y/o protección en estos ecosistemas costeros.

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“…It is generally agreed that plants are important part of the wastewater treatment system via the uptake of considerable amount of nutrients and metals sequestered in the biomass of Phragmites australis (abundant species within the investigated streams) and thus, available for harvest and removal (Vymazal and Brezinová 2016). Regardless of primary producers (epiphytes), aquatic benthic and pelagic consumers (mollusks, crustaceans, and fish) accumulate metals (Mendoza-Carranza 2016). Explored habitats are heterogeneous in their biota richness and abundance, and potential actors of such process.…”

Section: Heavy Metals Levelsmentioning

confidence: 99%

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The risk of heavy metals is major environmental problem. The levels of heavy metals enrichments in the sediments sampled from the Ichkeul wetland streams system were determined using contamination indices: the contamination factor (CF), geo-accumulation index (Igeo), and pollution load index (PLI). The obtained data for the geo-accumulation index revealed that sampled sediments are unpolluted for Fe, Zn, Mn, Ni, Cu, and Cr, while the levels of Cd and Pb indicated a moderate to heavy contamination. A similar profile was given by the data of the contamination factor. The pollution load index showed low values in all studied samples, ranging between 0.45 and 1.35. The non-metric multidimensional scaling (NMDS) analysis highlighted three main groups suggesting that they derived from same sources.

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Distribution and bioconcentration of heavy metals in a tropical aquatic food web: A case study of a tropical estuarine lagoon in SE Mexico

Cited by 98 publications

References 62 publications

An Analysis of Current Sustainability of Mexican Cities and Their Exposure to Climate Change

An Analysis of Current Sustainability of Mexican Cities and Their Exposure to Climate Change

Calidad De Sedimentos Asociada a Actividades Antrópicas en Lagunas Costeras Semiáridas Subtropicales De La Costa Central Este Del Golfo De California

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