WIT Press


Mapping Temporal And Spatial Variation Of Sulphur And Nitrogen Deposition To A Complex Ecosystem In Campeche, Mexico

Price

Free (open access)

Paper DOI

10.2495/EID160111

Volume

203

Pages

11

Page Range

113 - 123

Published

2016

Size

3,158 kb

Author(s)

J. Cerón, R. Cerón, C. Aguilar, C. Montalvo, A. García, M. Muriel, E. Ramírez, A. Córdova, C. Carballo

Abstract

Throughfall deposition was measured in a complex ecosystem at the southeast of Mexico. Samples were collected in an annual basis at Xicalango-Atasta region in Campeche State. Ionic exchange resin collectors were used in 13 points in a multiple transects design. Ions retained were extracted and analyzed by colorimetry and turbidimetry. Mean throughfall deposition fluxes for N and S were 0.97 and 9.47 Kg ha−1 yr−1. N deposition flux did not exceed the critical load proposed and was considerably lower than those values reported for other authors; however, throughfall deposition flux for S was 2 times higher than those proposed for sensitive areas in Europe, suggesting that S deposition could be a threat for the mangrove ecosystems and fisheries in the region. Long-range transport of regional pollutants was evident during all seasons. Throughfall deposition maps were obtained by geo-statistic techniques and it was possible to identify two deposition hotspots in the region: oil and gas production facilities and vehicular emissions from federal highway.

Keywords

spatial distribution, throughfall deposition, N and S deposition, Campeche, Mexico