Morphological, sediment and soil chemical characteristics of dry tropical shallow reservoirs in the Southern Mexican Highlands

Submitted: 3 December 2011
Accepted: 3 December 2011
Published: 1 February 2011
Abstract Views: 1647
PDF: 979
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The morphometry, sediment and soil chemical characteristics of eleven dry tropical shallow reservoirs situated in Southern Mexican Highlands were studied. The reservoirs are located at 1104 to 1183 meters above sea level in a sedimentary area. Seventeen morphometric and eight sediment and soil chemical parameters were measured. The results of the morphometric parameters showed that these reservoirs presented a soft and roughness bottom, with an ellipsoid form and a concave depression that permit the mix up of water and sediments, causing turbidity and broken thermal gradients; their slight slopes allowed the colonization of submerged macrophyte and halophyte plants and improved the incidence of sunlight on water surface increasing evaporation and primary productivity. Dry tropical shallow reservoirs have fluctuations in area, and volume according to the amount of rainfall, the effect of evaporation, temperature, lost volume for irrigation, and other causes. The sand-clay was the most important sediment texture and their values fluctuated with the flooded periods. The concentration-dilution cycle showed a direct relationship in the percentage of organic matter in the soil as well as with pH, soil nitrogen and phosphorus. El Tilzate, El Candelero and El Movil were related by the shore development and high concentrations of organic matter and nitrogen in the soil. Finally, we emphasize the importance of this study, in relation to possible future changes in morphometrical parameters as a consequence of human impact.

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ALDAMA-ROJAS, Guillermo, Jesús Trinidad PONCE-PALAFOX, Delfino MADRIGAL-URIBE, José MONROY-GAYTÁN, Luis Fernando CRUZ-GARCIA, and José Luis ARREDONDO-FIGUEROA. 2011. “Morphological, Sediment and Soil Chemical Characteristics of Dry Tropical Shallow Reservoirs in the Southern Mexican Highlands”. Journal of Limnology 70 (1):139-44. https://doi.org/10.4081/jlimnol.2011.139.

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