Assessment of Geogenic and Anthropogenic Pollution Sources Using an Aquatic Plant Along the Sonora River Basin: Insights from Elemental Concentrations and Pb Isotope Signatures     

Romo-Morales  Diana  Moreno-Rodríguez  Verónica  Molina-Freaner  Francisco  Valencia-Moreno  Martín  Ruiz  Joaquín  Minjárez-Osorio  Christian  Hernández-Mendiola  Ernesto  del Rio-Salas  Rafael 《Natural Resources Research》2020,29(4):2773-2786

Natural Resources Research - Mining is an important activity in Mexico; however, despite its economic benefits, it carries potential environmental risks, including mine spills. On August 6,...  相似文献   

Mineralogy and Geochemistry of Rural Road Dust and Nearby Mine Tailings: A Case of Ignored Pollution Hazard from an Abandoned Mining Site in Semi-arid Zone     

Del Rio-Salas  Rafael  Ayala-Ramírez  Yessi  Loredo-Portales  René  Romero  Francisco  Molina-Freaner  Francisco  Minjarez-Osorio  Christian  Pi-Puig  Teresa  Ochoa–Landín  Lucas  Moreno-Rodríguez  Verónica 《Natural Resources Research》2019,28(4):1485-1503

Natural Resources Research - Abandoned mine tailings are considered as one of the main sources of potentially toxic elements. Because of the lack of supervision, particularly from small-scale or...  相似文献   

Genotypic diversity among pasture and roadside populations of the invasive buffelgrass (Pennisetum ciliare L. Link) in north-western Mexico     

R. Gutierrez-Ozuna  L.E. Eguiarte  F. Molina-Freaner 《Journal of Arid Environments》2009,73(1):26-32

Buffelgrass (Pennisetum ciliare L. Link) is an African agamospermous grass that has been widely introduced into arid regions of the world to improve rangelands for cattle production and as a result, it has invaded adjacent habitats. In this study, ISSR markers were employed to assess genotypic variation in populations of P. ciliare from north-western Mexico. We sampled plants from pasture and from colonizing roadside populations in order to explore if invasion success is associated with greater levels of genotypic diversity. Three ISSRs primers produced 27 reproducible bands that were used to screen 480 plants from sixteen populations. Mean values of the proportion of distinguishable genotypes (G/N) were 0.29, Nei's genotypic diversity was 0.75 and multilocus evenness (E) was 0.50. Sixty-seven multilocus genotypes were detected among 480 plants, with 46 (69%) restricted to single populations and 21 (31%) found in two or more populations. Our results showed no significant differences in genotypic diversity between pasture and roadside populations, suggesting that in P. ciliare invasion success is not directly associated with greater levels of genotypic variation. Probably, other factors such as phenotypic plasticity and propagule pressure could be major determinants of the invasion success of buffelgrass in this region of Mexico.  相似文献