Spatial and Temporal Troughfall Deposition Patterns on Two Regions at the Center and at the Southeast of Mexico

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Abstract: In this study, throughfall deposition of N and S was measured in two regions at the center and at the southeast of Mexico. In the region 1, sampling was carried out from June 6, 2014 to January 6, 2015 at Xicalango-Atasta region. In the region 2, throughfall deposition was collected from November 29, 2014 to February 7, 2015 at C?rdoba-Orizaba region. Passive throughfall collectors were used to collect samples in 23 sampling points distributed along these two regions in a multiple transects design. Ions retained (NO3-, NH4+, and SO42-) by the resin column were extracted with 2N KCl, and analyzed by colorimetry and turbidimetry. Mean throughfall deposition fluxes for N (NO3- + NH4+) and S (SO42-) were 0.8 and 9.22 Kg ha-1 yr-1, respectively in region 1. N deposition flux in Xicalango-Atasta region did not exceed the critical load proposed; however, throughfall deposition flux for S was 3 times higher than those proposed for sensitive areas, suggesting that S deposition could be a threat for the mangrove ecosystems and fisheries in the region 1. On the other hand, mean throughfall deposition fluxes for N (NO3- + NH4+) and S (SO42-) were 0.38 and 46.97 Kg ha-1 yr-1, respectively in region 2. Long-range transport of regional pollutants was completely evident during autumn and winter seasons in C?rdoba-Orizaba region. N deposition flux in region 2 did not exceed the critical load value proposed for sensitive ecosystems; however, S throughfall deposition flux exceeded almost 15 times the critical load value, suggesting that this region is highly polluted.

WSEAS Transactions on Environment and Development, ISSN / E-ISSN: 1790-5079 / 2224-3496, Volume 11, 2015, Art. #7

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R. Ceron, J. Ceron, C. Aguilar, C. Montalvo, E. Rustrian, E. Houbron, E. Ramirez, M. Muriel, A. Cordova, C. Carballo, A. Garcia, H. Chi, M. Hernandez, "Spatial and Temporal Troughfall Deposition Patterns on Two Regions at the Center and at the Southeast of Mexico," WSEAS Transactions on Environment and Development, vol. 11, pp. 57-72, 2015, DOI:
R. Ceron, J. Ceron, C. Aguilar, C. Montalvo, E. Rustrian, E. Houbron, E. Ramirez, M. Muriel, A. Cordova, C. Carballo, A. Garcia, H. Chi, M. Hernandez. Spatial and Temporal Troughfall Deposition Patterns on Two Regions at the Center and at the Southeast of Mexico. WSEAS Transactions on Environment and Development. 2015;11:57-72.
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