Rainwater chemical composition at the end of the mid-summer drought in the Caribbean shore of the Yucatan Peninsula

Identification of Ion sources in rainwater of a coastal site impacted by the gas and oil industry in the southeast of Mexico

“…Except for NO 3 -and SO 4 2-, ionic concentrations were in agreement with values reported for the Caribbean Region (Cerón et al, 2002;Bravo et al, 2000;Clark et al, 1998;Eklund et al, 1997;Hendry et al, 1990;Mc Dowell et al, 1990). Marine aerosol contributed in a great proportion to Na + , Mg 2+ and Cl -, whereas K + and Ca 2+ showed enrichment and probably were derived from crust.…”

“…Table 2 shows the volume-weighted mean concentrations (VWM) for all collected samples in San Antonio Cárdenas and in Table 3 are shown the volume-weighted mean concentrations of precipitation in some marine remote sites of the world (Casimiro et al, 1991;Galloway et al, 1982;Galloway et al, 1983;Junge, 1960;Rhode and Grandell, 1972;Szepesi and Fekete, 1987). In addition, Table 4 shows the volume-weighted mean concentrations for nonremote coastal and marine sites in the Caribbean Sea reported by other researchers (Cerón et al, 2002;Bravo et al, 2000;Clark et al, 1998;Eklund et al, 1997;Hendry et al, 1990;Mc Dowell et al, 1990). According to , and Cl -) was similar to that reported in Table 4, except for nitrate and sulphate whose levels were higher than those reported for coastal and marine remote sites (Table 3).…”

Canopy interactions of rainfall in an off-shore mangrove ecosystem dominated by Rhizophora mangle (Belize)

“…Opposed to the remoteness of this site, the high solute concentrations in rainwater at Twin Cays and peak concentrations found at other sites (Supplementary Table) are generally associated with biomass burning, fossil fuel burning and dust deposition. Though we can not dissect the importance of different sources of nutrient input into this mangrove ecosystem, frequent nearby fires at the Yucatan peninsula (Ceron et al, 2002) and long-distance transport and deposition of Saharan dust (Reid et al, 2003) probably are major contributors to ecosystem inputs of Ca 2+ and K + , NO À 3 , NH þ 4 , P i , DOC and DON via bulk precipitation. The significance of biogenic sources was also indicated by the decrease of VWM concentrations at the Yucatan peninsula during the dry-to-wet season transition when fire frequency and release of biogenic NO x , NH 3 , K + and P i decrease (Supplementary Table 1; Ceron et al, 2002).…”

Chemical and isotopic interpretation of major ion compositions from precipitation: a one-year temporal monitoring study in Wrocław, SW Poland

“…A difference between ion constituents in rainwater on natural and anthropogenic sites exists. In coastal areas precipitation is mainly dominated by marine aerosols with high concentrations of Na + and Cl − (Parungo et al 1990;Ceron et al 2002), whereas nitrogen (N) and sulphur (S) compounds dominate rural, urban and agricultural areas and reflect anthropogenic influence, such as fossil fuels combustion, fertilizers application on fields or specific sewage treatments (Das et al 2005;Górka et al 2014). The chemical composition of precipitation was also determined in Poland (Jóźwiak and Kozłowski 2005;Kacorzyk et al 2012) including Wrocław and its vicinity (Kmieć et al 1994;Czyżyk and Rajmund 2011).…”