Anthropogenic and natural impacts in the marine area of influence of the Grijalva – Usumacinta River (Southern Gulf of Mexico) during the last 45 years

Ruiz-Fernández, Ana Carolina; Alonso-Rodrı́guez, Rosalba; Sanchez-Cabeza, Joan-Albert; Gío-Argáez, F. Raúl; Rodríguez-Ramírez, Alejandro; Villegas-Hernández, R.; Mora-García, A.I.; Fuentes-Sánchez, A.P.; Cardoso-Mohedano, J.G.; Hernández‐Becerril, David U.; Esqueda-Lara, Karina; Santiago-Pérez, Susana; Gómez-Ponce, Mario Alejandro; Pérez-Bernal, Libia Hascibe

doi:10.1016/j.marpolbul.2020.111245

Cited by 15 publications

(4 citation statements)

References 39 publications

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“…For example, some studies like the one of Wang et al (2017) have reported the presence of V, Cr, Pb, and Ni in the rivers sediments and the coastal areas of sites adjacent to oil facilities. These reports are consistent with studies carried out at two oil assets: at Cinco Presidentes in Veracruz, and at Samaria-Luna in Tabasco, in which Pb, Zn, Na, and Ni outside of regulatory ranges have been detected, as well as V, Cr, and Cd have been observed in different concentrations (Ruiz-Fernández et al, 2019;Gómez-Mellado et al, 2020;Machain-Castillo et al, 2020). In addition, in some spills of crude oil and added asphalt, concentrations of Hg, Cd, Ni, As, Ba, Be, Ag, Se, and Ta were observed by Mendoza-Carranza et al (2016) and Saadati et al (2020).…”

Section: Metals Contentsupporting

confidence: 90%

Pre-evaluation of contaminated soil for oil field reactivation in Moloacan, Veracruz, Mexico

Yzquierdo-Ruíz¹,

Torres-Sánchez²,

Garza-Rodríguez³

et al. 2022

RMIQ

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Section: Metals Contentsupporting

confidence: 90%

Pre-evaluation of contaminated soil for oil field reactivation in Moloacan, Veracruz, Mexico

Yzquierdo-Ruíz¹,

Torres-Sánchez²,

Garza-Rodríguez³

et al. 2022

RMIQ

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“…They observed a general tendency for incomplete resetting of grains that they attributed to low connectivity of fluvial sediment in the lowland environment because of the large volume of sediment mobilized from the highlands that becomes stored for periods in the floodplains. These authors indicate that only during large floods is the sediment likely to be transported downstream, which underscores the importance of large floods in transferring sediments and nutrients to the floodplains (Machain-Castillo et al, 2020).…”

Section: Resultsmentioning

confidence: 85%

Four millennia of geomorphic change and human settlement in the lower Usumacinta–Grijalva River Basin, Mexico

Muñoz‐Salinas

Cook

Castillo

et al. 2023

Progress in Physical Geography: Earth and Environment

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The lower Usumacinta–Grijalva River Basin contains one of the richest biodiversity landscapes of the Maya region. Our research is based on (1) an integrative literature review of the geomorphological and archaeological papers published about the lower Usumacinta–Grijalva River Basin and (2) topographic analysis of digital elevation models using a geographical information system to explore the relationship between past human settlement and landscape accessibility along the coastal plain of Tabasco. This work provides a new synthesis of previous research and proposes new models for the geomorphic evolution of the lower Usumacinta–Grijalva River Basin in the context of four millennia of human land use and settlement. For the evolution of the strand-plain of the Usumacinta and Grijalva rivers, there are two published geochronological models that provide different chronologies. We discuss here how both geochronological models encompass Pre-Columbian human settlement in the delta. Interestingly, we notice that one of them overlaps a possible high-magnitude flood event (or events) that drove large geomorphic change around 750 CE (1200 BP), with implications for settlement patterns and chronology. Based on topographical analysis of the eastern-distal sector of the Usumacinta–Grijalva delta, we propose a new model for the evolution of this area with implications for the human occupation during the Mesoamerican Terminal Classic and Early Postclassic on the delta. As one of the main conclusions, we propose that the Pom–Atasta water bodies predate much of the Usumacinta–Grijalva delta and the most recent phase of delta building overlays the original lagoon barriers, resulting in a geomorphic setting more attractive to local human occupation after the Terminal Classic period. According to one of the geochronological models of the delta, this dates to ca. 900 CE, preceding the establishment of nearby settlements such as Atasta.

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“…Nitrogen and phosphorus concentrations in coastal areas adjacent to the Grijalva–Usumacinta mouth suggest hypereutrophic state during the rainy season (Cardoso‐Mohedano et al, 2022), that can be associated to the higher nutrient loading measured during the rainy and nortes season in this study (Figure 8). Although current knowledge indicates that hypoxia events in the Grijalva–Usumacinta mouth only occur during flood events (Cardoso‐Mohedano et al, 2020; Machain‐Castillo et al, 2020), increase in nutrient transport due to land use changes and population growth in the Grijalva–Usumacinta Basin could contribute to the seasonal presence of hypoxic waters in the southern Gulf of Mexico. Excess nutrient loading can also affect freshwater ecosystems in the lower Usumacinta and Grijalva area, including floodplain lakes and protected wetland areas (Centla Wetlands Biosphere Reserve), where signs of eutrophication have already been documented (Castillo, 2020; Salcedo et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Transport of nutrients into the southern Gulf of Mexico by the Grijalva–Usumacinta rivers

Castillo-Uzcanga

Carrillo

Jarquín-Sánchez

et al. 2023

Hydrological Processes

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Nutrient transport by rivers strongly influences ecosystem productivity and hypoxia zone formation in coastal areas. In this study, we estimated the transport of nitrogen and phosphorus by the Grijalva and Usumacinta rivers that combined represent the second largest source of fresh water into the Gulf of Mexico. Water samples were collected monthly within an annual cycle at different sites (mainstem and tributaries) in the Lower Grijalva and Usumacinta basins to encompass the seasonal variation in discharge. Nitrogen (total nitrogen, nitrate-N, ammonium-N, and nitrite-N), phosphorus (total phosphorus, soluble reactive phosphorus), and chlorophyll concentrations were determined, and annual loads estimated using the Beale ratio approach. Nutrient and chlorophyll concentrations were greater in the Grijalva than in the Usumacinta River. Stronger seasonal patterns in nutrient concentrations and discharge were identified in the Usumacinta, evincing the flow regulation experimented by the Grijalva. In the Grijalva, higher nutrient concentrations were measured at the De la Sierra and Pichucalco rivers, compared to the regulated Carrizal. TN:TP ratios were greater during the dry season in both rivers, and higher TN:TP occurred in the Usumacinta than in the Grijalva.The Usumacinta showed greater nutrient loads (nitrogen, 26790.6 Â 10 3 kg year À1 ; phosphorus, 3056.9 Â 10 3 kg year À1 ) than the Grijalva (nitrogen 19974.7 Â 10 3 kg year À1 ; phosphorus, 1941.8 Â 10 3 kg year À1 ). However, the Grijalva River showed higher soluble reactive phosphorus and ammonium-N loads and yields than the Usumacinta, likely explained by greater delivery of urban wastewater in the lower Grijalva Basin. The Grijalva-Usumacinta represents an important source of nitrogen compared to other rivers draining into the Gulf of Mexico, even though more disturbed rivers can exceed the phosphorus load. This study can contribute to the modelling of nutrient delivery into the Gulf of Mexico and to better understand the influence of tropical rivers in the formation of coastal hypoxia.

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Anthropogenic and natural impacts in the marine area of influence of the Grijalva – Usumacinta River (Southern Gulf of Mexico) during the last 45 years

Cited by 15 publications

References 39 publications

Pre-evaluation of contaminated soil for oil field reactivation in Moloacan, Veracruz, Mexico

Pre-evaluation of contaminated soil for oil field reactivation in Moloacan, Veracruz, Mexico

Four millennia of geomorphic change and human settlement in the lower Usumacinta–Grijalva River Basin, Mexico

Transport of nutrients into the southern Gulf of Mexico by the Grijalva–Usumacinta rivers

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