التفاصيل البيبلوغرافية
| العنوان: |
Lead pollution from waterfowl hunting in wetlands and rice fields in Argentina |
| المؤلفون: |
Romano, M., Ferreyra, H., Ferreyroa, G., Molina, F.V., Caselli, A., Barberis, I., Beldoménico, P., Uhart, M. |
| المجموعة: |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
| مصطلحات موضوعية: |
Environmental pollution, Hunting, Lead, Trace metals, Wetlands, Pelletizing, Soils, Trace elements, Vegetation, Water pollution, Environmental pollutions, Non-toxic materials, Pb concentration, Reference values, Soil concentrations, Trace metal, Wetland condition, Pollution, surface water, soil pollutant, water pollutant, lead shot, paddy field, waterfowl, wetland, agricultural land, animal hunting, Argentina, Article, controlled study |
| الوصف: |
The pollution of wetlands by lead derived from waterfowl hunting with lead shot was investigated. We determined soil pellet density and Pb concentration in soil, water and vegetation in natural wetlands and rice fields in central-eastern Santa Fe province, Argentina. Pellet density varied greatly among hunting sites (between 5.5-141 pellets/m2) and pellets were present in some control sites. Soil Pb concentration in most hunting sites (approximately 10-20mgkg-1) was not much higher than in control sites (~5-10mgkg-1), with the exception of the site with highest pellet density, which also had a high Pb soil concentration. In water, on the other hand, Pb concentration was similar in all sites (~4-7μgL-1), both control and hunting, and higher than reference values for aquatic media. Lead was also present in vegetation, including grasses and rice crops, in almost all cases. Most soil-collection sites were slightly acidic, and were frequently flooded. These results strongly suggest that metallic Pb from spent shot is oxidized and dissolved due to wetland conditions. Thus, the pollutant is readily mobilized and distributed across all wetland areas, effectively homogenizing its concentration in locations with and without hunting activities. The replacement of lead by nontoxic materials in pellets appears to be the only effective way to prevent Pb pollution in wetlands. © 2015 Elsevier B.V. ; Fil:Ferreyroa, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. ; Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. |
| نوع الوثيقة: |
journal/newspaper |
| اللغة: |
unknown |
| Relation: |
http://hdl.handle.net/20.500.12110/paper_00489697_v545-546_n_p104_Romano |
| الاتاحة: |
https://hdl.handle.net/20.500.12110/paper_00489697_v545-546_n_p104_Romano |
| Rights: |
info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/2.5/ar |
| رقم الانضمام: |
edsbas.FA61BEC9 |
| قاعدة البيانات: |
BASE |