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DOI | 10.1016/j.scitotenv.2018.10.288 |
Dam implications on salt-water intrusion and land use within a tropical estuarine environment of the Gulf of Mexico | |
Alcerreca-Huerta, J. C.1; Callejas-Jimenez, M. E.2; Carrillo, L.2; Castillo, M. M.3 | |
发表日期 | 2019 |
ISSN | 0048-9697 |
EISSN | 1879-1026 |
卷号 | 652页码:1102-1112 |
英文摘要 | Estuaries are highly productive ecosystems, defined by salt-freshwater exchanges that are significantly altered by changes upstream and in adjacent coastal areas. Tropical estuaries are characterized by the periodic advance and retreat of saline intrusion, depending on seasonality, episodic river flows and flooding events. Salt-water intrusion due to the estuarine dynamics might be affected by dam systems, which could modify the hydrological regime of the estuary in relation to other stressors, such as land use changes. For this purpose, field measurements of salinity, temperature, river-discharge and flow velocities were conducted over a year to analyze the current hydrological regime in the upper estuary of the Grijalva River in the southern Gulf of Mexico, part of the Biosphere Reserve "Pantanos de Centla", one of the most biodiverse areas in the world. Analysis of land use and vegetation cover was performed. Historical implications of the hydrological performance of the four-dam system (1957 to 2014) are presented, together with the upstream-induced changes (i.e. discharge and seasonal water volumes variations): before, between and after the full operation of the damsystem. A general loss of seasonality in the river discharge was identified (1974-1987), when critical mean annual water discharges were registered (Q(mean) from 263.56 to 126.49m(3)/s). Chronological changes in the estuary and in the surrounding area due to the introduction of large extensions of cultivated grassland (similar to 1020 km(2)), reduction in mangrove cover (similar to 223 km(2)) and tular (similar to 1340 km(2)) were noticed. These modifications mostly occurred before conservation strategies were implemented, such as the designation of the Biosphere Reserve (1992). This study contributes to a better understanding of the response of estuarine systems to anthropic perturbations and the development of long-term management plans that could take into account climate change and the increase of hydropower development. (C) 2018 Elsevier B.V. All rights reserved. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/93616 |
作者单位 | 1.Colegio Frontera Sur CONACYT ECOSUR, ECOSUR, Consejo Nacl Ciencia & Tecnol, Dept Systemat & Aquat Ecol, Ave Centenario Km 5-5, Chetmal, Mexico; 2.Colegio Frontera Sur, Dept Systemat & Aquat Ecol, Ave Centenario Km 5-5, Chetmal, Mexico; 3.Colegio Frontera Sur, Dept Sustainabil Sci, Carretera Villahermosa Reforma Km 15-5,Secc 2, Villahermosa, Mexico |
推荐引用方式 GB/T 7714 | Alcerreca-Huerta, J. C.,Callejas-Jimenez, M. E.,Carrillo, L.,et al. Dam implications on salt-water intrusion and land use within a tropical estuarine environment of the Gulf of Mexico[J],2019,652:1102-1112. |
APA | Alcerreca-Huerta, J. C.,Callejas-Jimenez, M. E.,Carrillo, L.,&Castillo, M. M..(2019).Dam implications on salt-water intrusion and land use within a tropical estuarine environment of the Gulf of Mexico.SCIENCE OF THE TOTAL ENVIRONMENT,652,1102-1112. |
MLA | Alcerreca-Huerta, J. C.,et al."Dam implications on salt-water intrusion and land use within a tropical estuarine environment of the Gulf of Mexico".SCIENCE OF THE TOTAL ENVIRONMENT 652(2019):1102-1112. |
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