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The study evaluates pollution by Pb, Zn, and Cr, and a possible sustainable solution through phytoremediation technologies, in the surroundings of Haina, a very polluted area of the Dominican Republic. Soils and plants were analyzed at 11 sampling points. After sample processing, the elemental composition was analyzed by ICP-OES. Soil metal concentrations, contaminating factors, pollution load indexes, and the Nemerow pollution index were assessed. Soil metal concentrations showed Pb > Zn > Cr, resulting in very strong Pb pollution and medium-impact Zn pollution, with an anthropogenic origin in some sites. This means that some agricultural and residential restrictions must be applied. Accumulation levels in plant tissues, bioaccumulation factors in roots and shoots, and translocation factors were determined for Acalypha alopecuroidea, Achyranthes aspera, Amaranthus dubius, Bidens pilosa, Heliotropium angiospermum, Parthenium hysterophorus, and Sida rhombifolia. The vast majority of the plants showed very low levels of the potentially toxic elements studied, although it may be advisable to take precautions before consumption as they are all considered edible, fodder, and/or medicinal plants. Despite their low rate of bioaccumulation, most of the plants studied could be suitable for the application of phytoremediation of Zn in the field, although further studies are needed to assess their potential for this.
Agripina Ramírez; Gregorio García; Olaf Werner; José Navarro-Pedreño; Rosa Ros. Implications of the Phytoremediation of Heavy Metal Contamination of Soils and Wild Plants in the Industrial Area of Haina, Dominican Republic. Sustainability 2021, 13, 1403 .
AMA StyleAgripina Ramírez, Gregorio García, Olaf Werner, José Navarro-Pedreño, Rosa Ros. Implications of the Phytoremediation of Heavy Metal Contamination of Soils and Wild Plants in the Industrial Area of Haina, Dominican Republic. Sustainability. 2021; 13 (3):1403.
Chicago/Turabian StyleAgripina Ramírez; Gregorio García; Olaf Werner; José Navarro-Pedreño; Rosa Ros. 2021. "Implications of the Phytoremediation of Heavy Metal Contamination of Soils and Wild Plants in the Industrial Area of Haina, Dominican Republic." Sustainability 13, no. 3: 1403.
The use of ornamental plants for the phytoremediation of potentially toxic elements in polluted soils is an interesting task. It makes possible to combine environmental restoration, re-use of land, and the production of goods and services of economic interest. In this work, in vitro experiments using three cultivars of Chrysanthemum (Asteraceae) were carried out with 0, 300, 600, 900, and 1500 mg/kg of lead concentrations for a period of 12 weeks. The objective was to obtain data about their lead tolerance and bioaccumulation capacity in order to know their potential as phytoremediators in a densely populated Caribbean area of the Dominican Republic with a high concentration of lead in soils. The variations in biomass, root growth as well as accumulation of this element in the plants were measured. The results suggest that the three cultivars have a good potential for phytoextraction at moderate pollution levels, as they showed a good bioaccumulation of lead, which had mild effects on their biomass production and root elongation. Additional studies should be carried out to assess their effectiveness as phytoextractors under field conditions, as well as other alternative uses that could generate esthetic, environmental, and/or economic benefits for tropical areas contaminated by Pb.
Agripina Ramírez; Gregorio García; Olaf Werner; Rosa M. Ros. In vitro lead tolerance and accumulation in three Chrysanthemum cultivars for phytoremediation purposes with ornamental plants. International Journal of Phytoremediation 2020, 22, 1110 -1121.
AMA StyleAgripina Ramírez, Gregorio García, Olaf Werner, Rosa M. Ros. In vitro lead tolerance and accumulation in three Chrysanthemum cultivars for phytoremediation purposes with ornamental plants. International Journal of Phytoremediation. 2020; 22 (11):1110-1121.
Chicago/Turabian StyleAgripina Ramírez; Gregorio García; Olaf Werner; Rosa M. Ros. 2020. "In vitro lead tolerance and accumulation in three Chrysanthemum cultivars for phytoremediation purposes with ornamental plants." International Journal of Phytoremediation 22, no. 11: 1110-1121.
The effects of an abandoned mining area, exploited for centuries in the mining district of Cartagena-La Union, result in a continuous supply of heavy metals into the Mar Menor coastal lagoon after rain episodes. As a consequence, concentration of trace elements in water column and sediments of this ecosystem is usually higher than in other areas. For monitoring ecosystem health, this study assessed the ability of Rhizostoma pulmo to bioaccumulate trace elements. A total of 57 individuals were sampled at eight different sampling stations during the summer of 2012. Although the concentrations of different analyzed elements (Al, Ti, Cr, Mn, Fe, Ni, Cu, Zn, As, Cd, Sn, and Pb) were moderate, bioconcentration levels in relation to seawater metal concentration were extremely high. In any case, the use or disposal of these organisms should consider their metal content, because of their potential environmental and health implications.
Ana Muñoz-Vera; Jose Matías Peñas Castejón; Gregorio García. Patterns of trace element bioaccumulation in jellyfish Rhizostoma pulmo (Cnidaria, Scyphozoa) in a Mediterranean coastal lagoon from SE Spain. Marine Pollution Bulletin 2016, 110, 143 -154.
AMA StyleAna Muñoz-Vera, Jose Matías Peñas Castejón, Gregorio García. Patterns of trace element bioaccumulation in jellyfish Rhizostoma pulmo (Cnidaria, Scyphozoa) in a Mediterranean coastal lagoon from SE Spain. Marine Pollution Bulletin. 2016; 110 (1):143-154.
Chicago/Turabian StyleAna Muñoz-Vera; Jose Matías Peñas Castejón; Gregorio García. 2016. "Patterns of trace element bioaccumulation in jellyfish Rhizostoma pulmo (Cnidaria, Scyphozoa) in a Mediterranean coastal lagoon from SE Spain." Marine Pollution Bulletin 110, no. 1: 143-154.
Sergio Pellegrini; Gregorio Garcia; Jose Matias Peñas Castejon; Nadia Vignozzi; Edoardo A.C. Costantini. Pedogenesis in mine tails affects macroporosity, hydrological properties, and pollutant flow. CATENA 2016, 136, 3 -16.
AMA StyleSergio Pellegrini, Gregorio Garcia, Jose Matias Peñas Castejon, Nadia Vignozzi, Edoardo A.C. Costantini. Pedogenesis in mine tails affects macroporosity, hydrological properties, and pollutant flow. CATENA. 2016; 136 ():3-16.
Chicago/Turabian StyleSergio Pellegrini; Gregorio Garcia; Jose Matias Peñas Castejon; Nadia Vignozzi; Edoardo A.C. Costantini. 2016. "Pedogenesis in mine tails affects macroporosity, hydrological properties, and pollutant flow." CATENA 136, no. : 3-16.
Coastal lagoons are ecosystems that are relatively enclosed water bodies under the influence of both the terrestrial and the marine environment, being vulnerable to human impacts. Human activities, such as mining extraction, are significant anthropogenic coastal stressors that can negatively affect ecosystems and communities. In light of the above, the objective of this research is to examine the influence of metal mining activities on the composition of sediments of a Mediterranean coastal lagoon, named Mar Menor. This paper presents a comprehensive characterization for grain size, mineralogy, geochemistry and organic matter of sediments of this coastal lagoon, investigating their variation along space and time. Sedimentation dynamics are ruling clearly the grain size predominant in each area of the Mar Menor coastal lagoon, determining the existence of entrainment, transport and sedimentation areas. For minerals, elements and organic matter, sedimentation dynamics are also determining their distribution.
Gregorio García; Ana Muñoz-Vera. Characterization and evolution of the sediments of a Mediterranean coastal lagoon located next to a former mining area. Marine Pollution Bulletin 2015, 100, 249 -263.
AMA StyleGregorio García, Ana Muñoz-Vera. Characterization and evolution of the sediments of a Mediterranean coastal lagoon located next to a former mining area. Marine Pollution Bulletin. 2015; 100 (1):249-263.
Chicago/Turabian StyleGregorio García; Ana Muñoz-Vera. 2015. "Characterization and evolution of the sediments of a Mediterranean coastal lagoon located next to a former mining area." Marine Pollution Bulletin 100, no. 1: 249-263.
Coastal lagoons are ecosystems highly vulnerable to human impacts because of their situation between terrestrial and marine environment. Mar Menor coastal lagoon is one of the largest lagoons of the Mediterranean Sea, placed in SE Spain and subjected to major human impacts, in particular the mining of metal sulphides. As a consequence, metal concentration in water column and sediments of this ecosystem is usually higher than in other areas. For monitoring ecosystem health, the present study has assessed the ability of Cotylorhiza tuberculata for bioaccumulating metals from sea water. Up to 65 individuals were sampled at 8 different sampling stations during the summer of 2012. Although the concentration values for different elements considered were moderate (Pb: 0.04-29.50 ppm, Zn: 2.27-93.44 ppm, Cd: 0-0.67 ppm, As: 0.56-130.31 ppm) by dry weight of the jellyfish tissues (bell and oral arms combined), bioconcentration levels in relation to seawater metal concentration were extremely high. In any case, the use or disposal of these organisms should consider their metal content because of their potential environmental and health implications.
Ana Muñoz-Vera; Gregorio García; Antonio García-Sánchez. Metal bioaccumulation pattern by Cotylorhiza tuberculata (Cnidaria, Scyphozoa) in the Mar Menor coastal lagoon (SE Spain). Environmental Science and Pollution Research 2015, 22, 19157 -19169.
AMA StyleAna Muñoz-Vera, Gregorio García, Antonio García-Sánchez. Metal bioaccumulation pattern by Cotylorhiza tuberculata (Cnidaria, Scyphozoa) in the Mar Menor coastal lagoon (SE Spain). Environmental Science and Pollution Research. 2015; 22 (23):19157-19169.
Chicago/Turabian StyleAna Muñoz-Vera; Gregorio García; Antonio García-Sánchez. 2015. "Metal bioaccumulation pattern by Cotylorhiza tuberculata (Cnidaria, Scyphozoa) in the Mar Menor coastal lagoon (SE Spain)." Environmental Science and Pollution Research 22, no. 23: 19157-19169.
J.M. Gomez-Ros; Gregorio Garcia; J.M. Peñas. Assessment of restoration success of former metal mining areas after 30 years in a highly polluted Mediterranean mining area: Cartagena-La Unión. Ecological Engineering 2013, 57, 393 -402.
AMA StyleJ.M. Gomez-Ros, Gregorio Garcia, J.M. Peñas. Assessment of restoration success of former metal mining areas after 30 years in a highly polluted Mediterranean mining area: Cartagena-La Unión. Ecological Engineering. 2013; 57 ():393-402.
Chicago/Turabian StyleJ.M. Gomez-Ros; Gregorio Garcia; J.M. Peñas. 2013. "Assessment of restoration success of former metal mining areas after 30 years in a highly polluted Mediterranean mining area: Cartagena-La Unión." Ecological Engineering 57, no. : 393-402.
Many studies assessing the quality of sediments and their pollution impact use monitoring data consisting predominantly of chemical indicators. Recently, ecotoxicity estimates have been used as very important parameters of the ecological state of sediment samples. Thus, a more complete sediment risk assessment is achieved and more reliable information on the sediment pollution history is extracted. The data interpretation could be improved if multivariate statistical techniques were applied to data classification, modelling and interpretation. The starting classification of the data was performed using self-organizing maps (SOM) approach in order to reveal specific relationship patterns for objects and for variables. The original element of the present study is the use of the Hasse diagram technique (HDT) for partial ordering in order to explain some specific relations between the chemical indicators analysed (heavy metal content in different sediment compartments) and the ecotoxicity tests for acute and chronic toxicity. In principle, a reliable estimate of the pollution impact of a large environmental object (the Mar Menor lagoon in Spain) is achieved. The specific role of each one of the five heavy metals involved (Zn, Cu, Mn, Pb, and Cd) is interpreted in the context of the additional ecotoxicity tests.
Stefan Tsakovski; Błażej Kudłak; Vasil Simeonov; Lidia Wolska; Gregorio Garcia; Jacek Namiesnik. Relationship between heavy metal distribution in sediment samples and their ecotoxicity by the use of the Hasse diagram technique. Analytica Chimica Acta 2012, 719, 16 -23.
AMA StyleStefan Tsakovski, Błażej Kudłak, Vasil Simeonov, Lidia Wolska, Gregorio Garcia, Jacek Namiesnik. Relationship between heavy metal distribution in sediment samples and their ecotoxicity by the use of the Hasse diagram technique. Analytica Chimica Acta. 2012; 719 ():16-23.
Chicago/Turabian StyleStefan Tsakovski; Błażej Kudłak; Vasil Simeonov; Lidia Wolska; Gregorio Garcia; Jacek Namiesnik. 2012. "Relationship between heavy metal distribution in sediment samples and their ecotoxicity by the use of the Hasse diagram technique." Analytica Chimica Acta 719, no. : 16-23.
The distribution and mobility of heavy metals in the non-saturated zone of the alluvial plain of a wadi in the Cartagena–La Union mining district was investigated. The elemental chemistry of soils, in-depth sediments and different plant species (namely Hirsfeldia incana, Ditrichia viscosa and Piptatherum miliaceum) was carried out by using X-ray fluorescence and X-ray diffraction techniques. Potential mobility of metals was assessed by using lixiviation test runs (DIN 38414-S4). Concentrations detected in soils and sediments were higher than the acceptable limits reported in official regulations. Regarding metals mobility, values obtained for Pb, Zn and As exceed the limits established by European Union for DIN 38414-S4 leachates. Whilst the obtained leaching percentages for Pb, Cu and As were not especially high (<2%), Zn exhibit a very high leaching potential (up to 60% of the total metal content), involving potential risk of pollution events.
Oscar Gonzalez-Fernandez; Ignacio Queralt; Maria Luisa Carvalho; Gregorio García. Lead, Zinc, Arsenic and Copper Pollution in the Alluvial Plain of a Mining Wadi: The Beal Case (Cartagena–La Union Mining District, SE Spain). Water, Air, & Soil Pollution 2011, 220, 279 -291.
AMA StyleOscar Gonzalez-Fernandez, Ignacio Queralt, Maria Luisa Carvalho, Gregorio García. Lead, Zinc, Arsenic and Copper Pollution in the Alluvial Plain of a Mining Wadi: The Beal Case (Cartagena–La Union Mining District, SE Spain). Water, Air, & Soil Pollution. 2011; 220 (1):279-291.
Chicago/Turabian StyleOscar Gonzalez-Fernandez; Ignacio Queralt; Maria Luisa Carvalho; Gregorio García. 2011. "Lead, Zinc, Arsenic and Copper Pollution in the Alluvial Plain of a Mining Wadi: The Beal Case (Cartagena–La Union Mining District, SE Spain)." Water, Air, & Soil Pollution 220, no. 1: 279-291.
A geochemical and mineralogical characterization of three zones (namely oxides zones, hydrothermal alteration zone and mining wastes zone) from a mineralized zone in the upper part of the Cartagena-La Unión range was carried out by analysing rocks, soils and three plant species (Piptatherum miliaceum, Ditrichia viscosa and Hirsfeldia incana). The transference and bioavailability of some metals (especially Pb, Zn, As and Fe) from soils to plants was also checked. Results show that rocks have a large content of Fe and Pb which are transferred to surrounding soils also highly enriched in these elements (Fe ranges from 9 to 35% and Pb 1 to 2.9%). Regarding soil to plant transfer, it was shown a differential behaviour for both the three plant species and the soil zones, with a higher level of metal accumulation rates for Piptatherum miliaceum in the hydrothermal alteration zone. Values of accumulation rates obtained for Pb in Piptatherum miliaceum allow considering it a good choice for phytoremediation purposes.
O. Gonzalez-Fernandez; Ignasi Queralt; J. I. Manteca; Gregorio Garcia; Maria Luisa Carvalho. Distribution of metals in soils and plants around mineralized zones at Cartagena-La Unión mining district (SE, Spain). Environmental Earth Sciences 2010, 63, 1227 -1237.
AMA StyleO. Gonzalez-Fernandez, Ignasi Queralt, J. I. Manteca, Gregorio Garcia, Maria Luisa Carvalho. Distribution of metals in soils and plants around mineralized zones at Cartagena-La Unión mining district (SE, Spain). Environmental Earth Sciences. 2010; 63 (6):1227-1237.
Chicago/Turabian StyleO. Gonzalez-Fernandez; Ignasi Queralt; J. I. Manteca; Gregorio Garcia; Maria Luisa Carvalho. 2010. "Distribution of metals in soils and plants around mineralized zones at Cartagena-La Unión mining district (SE, Spain)." Environmental Earth Sciences 63, no. 6: 1227-1237.
M. Dassenakis; Gregorio Garcia; E. Diamantopoulou; J.D. Girona; E.M. Garcia-Marin; G. Filippi; V. Fioraki. The impact of mining activities on the hypersaline Mar Menor lagoon. Desalination and Water Treatment 2010, 13, 282 -289.
AMA StyleM. Dassenakis, Gregorio Garcia, E. Diamantopoulou, J.D. Girona, E.M. Garcia-Marin, G. Filippi, V. Fioraki. The impact of mining activities on the hypersaline Mar Menor lagoon. Desalination and Water Treatment. 2010; 13 (1-3):282-289.
Chicago/Turabian StyleM. Dassenakis; Gregorio Garcia; E. Diamantopoulou; J.D. Girona; E.M. Garcia-Marin; G. Filippi; V. Fioraki. 2010. "The impact of mining activities on the hypersaline Mar Menor lagoon." Desalination and Water Treatment 13, no. 1-3: 282-289.
The present paper deals with the application of Tucker3 modelling to a sediment monitoring data set from the area of Mar Menor coastal lagoon (Spain). The aim of the study is to model and interpret the fractionation of heavy metals in the suspended particulate matter and sediment fractions resulting by sedimentation processes. Since the lagoon is seriously influenced by anthropogenic activities the modelling aims an assessment of the environmental hazard, too. After application of various scaling and centering procedures and estimation of the model dimensionality, an optimal (3, 3, 3) Tucker3 model was chosen for data interpretation. Using the model output (factor loadings connected to the four main core elements) it could be concluded that the heavy metal concentrations in the suspended particulate matter and sediment fractions increase in order Cu > Mn > Zn ≈ Pb > Cd and could be examined as estimation of basic levels for all heavy metals caused by different sedimentation processes. The second important core element summarizes the anthropogenic influence of the mining activity in the region. The third important core element shows the different mobility of the heavy metals. The fourth important core element should be related to the specific sediment formation at one of the sampling location.
Stefan Tsakovski; Błażej Kudłak; Vasil Simeonov; Lidia Wolska; Gregorio Garcia; Manos Dassenakis; Jacek Namiesnik. N-way modelling of sediment monitoring data from Mar Menor lagoon, Spain. Talanta 2009, 80, 935 -941.
AMA StyleStefan Tsakovski, Błażej Kudłak, Vasil Simeonov, Lidia Wolska, Gregorio Garcia, Manos Dassenakis, Jacek Namiesnik. N-way modelling of sediment monitoring data from Mar Menor lagoon, Spain. Talanta. 2009; 80 (2):935-941.
Chicago/Turabian StyleStefan Tsakovski; Błażej Kudłak; Vasil Simeonov; Lidia Wolska; Gregorio Garcia; Manos Dassenakis; Jacek Namiesnik. 2009. "N-way modelling of sediment monitoring data from Mar Menor lagoon, Spain." Talanta 80, no. 2: 935-941.
The extraction of metallic minerals and the mineral dressing operations in concentrators produced a high impact in soils and sediments. Heavy metals in soils constitute a high risk of pollution, not only for mining areas, but also for agriculture and villages placed in subsidiary areas. This research has been focused on the assessment of the real environmental and health hazards of Zn in relation to geochemistry and metal mobility in surface soils from a mining area in SE Spain, under semiarid weather conditions. Mineralogy of the studied soils revealed major presence of quartz, but also of other silicates, sulfates, carbonates, and sulfides. Regarding Zn minerals, the presence of sphalerite as the main Zn sulfide, and of goslarite as Zn sulfate, and of smithsonite as Zn carbonate should be highlighted. Soil pH ranged between 4.4 and 4.9 and the electrical conductivity between 55 and 85 μS/cm. By using the sequential extraction procedure, the achieved results show that zinc is not only mainly associated to primary but also to secondary sulfides. Total concentration of the non-available fractions rises up to 98.45% of total Zn in the studied soils. On the other hand, available Zn fraction did not exceed more than 1.55% in percentage and less than 2000 ppm in absolute terms, and when referred to more easily available fraction (water-soluble and exchangeable fractions), these values are not more than 0.44% and then 800 ppm. Therefore, although there is a significant pollution level in this area, immediate hazard for the environment can be assessed as moderate. Finally it should be highlighted that these surface soils have undergone concentration processes of sphalerite, whose mechanisms should be related to the ascending flow of capillary water and the dragging of sphalerite crystals and Zn salts by electrokinetic and colloidal processes These processes seem to occur based on environmental pollution by wind and water erosion, and therefore directly associated to environmental pollution and risks by free metals.
G. Garcia; J.M. Peñas; J.I. Manteca. Zn mobility and geochemistry in surface sulfide mining soils from SE Spain. Environmental Research 2008, 106, 333 -339.
AMA StyleG. Garcia, J.M. Peñas, J.I. Manteca. Zn mobility and geochemistry in surface sulfide mining soils from SE Spain. Environmental Research. 2008; 106 (3):333-339.
Chicago/Turabian StyleG. Garcia; J.M. Peñas; J.I. Manteca. 2008. "Zn mobility and geochemistry in surface sulfide mining soils from SE Spain." Environmental Research 106, no. 3: 333-339.
O. Gonzalez-Fernandez; Ignasi Queralt; Maria Luisa Carvalho; Gregorio Garcia. Elemental analysis of mining wastes by energy dispersive X-ray fluorescence (EDXRF). Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 2007, 262, 81 -86.
AMA StyleO. Gonzalez-Fernandez, Ignasi Queralt, Maria Luisa Carvalho, Gregorio Garcia. Elemental analysis of mining wastes by energy dispersive X-ray fluorescence (EDXRF). Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 2007; 262 (1):81-86.
Chicago/Turabian StyleO. Gonzalez-Fernandez; Ignasi Queralt; Maria Luisa Carvalho; Gregorio Garcia. 2007. "Elemental analysis of mining wastes by energy dispersive X-ray fluorescence (EDXRF)." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 262, no. 1: 81-86.
Historical mining activities have led to the presence of enormous quantities of mining wastes, which cover large extensions of the Cartagena-La Unión mining district (SE, Spain). In the present work, we study the pulse entrance of mining wastes through two temporary streams (wadis) into the Mar Menor coastal lagoon in two torrential rain events and during a dry period. The characteristics of the runoff pointed to the generation of acid mine drainages in wastes, the acidified stormwater runoff loaded with particulate and dissolved heavy metals causing toxicity in the lagoon waters. The dissolved metals, which mainly affected the sampling stations located close to the wadi discharges, were rapidly eliminated from the water column, whereas the particulate metals were transported further and affected a wider area. Finally, both particulate and dissolved metals are eliminated from the water column and are accumulated in the sediments of the lagoon. The results of the water toxicity tests using sea-urchin embryos indicated that water toxicity disappeared within a few days in the most distant stations, but lasted longer and depended on the climatic conditions of the subsequent days in stations closer to the wadi outlets.
Lázaro Marín-Guirao; Javier Lloret; Arnaldo Marín; Gregorio Garcia; Antonio J. García-Fernández. Pulse-discharges of mining wastes into a coastal lagoon: Water chemistry and toxicity. Chemistry and Ecology 2007, 23, 217 -231.
AMA StyleLázaro Marín-Guirao, Javier Lloret, Arnaldo Marín, Gregorio Garcia, Antonio J. García-Fernández. Pulse-discharges of mining wastes into a coastal lagoon: Water chemistry and toxicity. Chemistry and Ecology. 2007; 23 (3):217-231.
Chicago/Turabian StyleLázaro Marín-Guirao; Javier Lloret; Arnaldo Marín; Gregorio Garcia; Antonio J. García-Fernández. 2007. "Pulse-discharges of mining wastes into a coastal lagoon: Water chemistry and toxicity." Chemistry and Ecology 23, no. 3: 217-231.
Mine tailings are typical elements in post-mining landscapes which usually have high heavy metal contents and are affected by intensive erosion processes, above all in arid and semiarid areas. Revegetation of these sites is considered a low cost and suitable technology to effect surface stabilization. Spontaneous plant communities that colonize tailings in Southern Spain showed different behavior depending on the pH: in neutral tailings the plant communities were formed by less number of plant species than in acid tailings but they had less seasonal variations, showing a stable development. This spontaneous vegetation, that is adapted to metal toxicity and to drought, allows reducing air borne and water erosion, and may mitigate the spread of the contamination to the nearby areas.
Héctor M. Conesa; Gregorio Garcia; Ángel Faz; Raquel Arnaldos. Dynamics of metal tolerant plant communities’ development in mine tailings from the Cartagena-La Unión Mining District (SE Spain) and their interest for further revegetation purposes. Chemosphere 2007, 68, 1180 -1185.
AMA StyleHéctor M. Conesa, Gregorio Garcia, Ángel Faz, Raquel Arnaldos. Dynamics of metal tolerant plant communities’ development in mine tailings from the Cartagena-La Unión Mining District (SE Spain) and their interest for further revegetation purposes. Chemosphere. 2007; 68 (6):1180-1185.
Chicago/Turabian StyleHéctor M. Conesa; Gregorio Garcia; Ángel Faz; Raquel Arnaldos. 2007. "Dynamics of metal tolerant plant communities’ development in mine tailings from the Cartagena-La Unión Mining District (SE Spain) and their interest for further revegetation purposes." Chemosphere 68, no. 6: 1180-1185.
Fire retardant chemicals are being used increasingly throughout the world to effectively manage wildland fires. The widespread use and high volume of retardant products being applied increase the potential for contamination of temporary wetlands that represent critical habitat for numerous species. This study aimed at assessing the emergence response of invertebrates from fire-retardant-contaminated sediments derived from two temporary wetlands, a vernal pool and a salt marsh, which differ distinctly in their invertebrate resting egg bank structure. Two application rates (1 and 3 L m−2) of the commercially available fire retardant, Fire Trol 934, were used to simulate environmentally realistic contamination scenarios for wetlands situated in Mediterranean grasslands and shrublands, respectively. Two contrasting emergence conditions (winter versus spring flooding conditions) were simulated to take into account the high inter- and intra-annual variability of pond filling in Mediterranean areas. Results showed a decrease in abundance (p < 0.001), taxonomic richness (p < 0.001) and biodiversity based on Shannon–Weaver diversity indices (p < 0.001) in both wetlands and under both emergence conditions with increased retardant application rate. This was due to the loss of chydorids, daphnids, ostracods, and rotifers in the vernal pool, and rotifers, nematodes, protozoa and aquatic fungi in the salt marsh. The observed patterns were similar for many taxa and community metrics at either retardant level irrespective of hatching regime, suggesting that the timing of pond filling was generally not an important influence in community response to Fire Trol. A multivariate approach to characterize community structure suggests that wetlands that undergo periodic drying are resilient to perturbations by chemicals and that community responses to anthropogenic stressors may be well within the range of response to natural disturbances.
D Angeler; B Sanchez; Gregorio Garcia; Jose Manuel Moreno. Community ecotoxicology: Invertebrate emergence from Fire Trol 934 contaminated vernal pool and salt marsh sediments under contrasting photoperiod and temperature regimes. Aquatic Toxicology 2006, 78, 167 -175.
AMA StyleD Angeler, B Sanchez, Gregorio Garcia, Jose Manuel Moreno. Community ecotoxicology: Invertebrate emergence from Fire Trol 934 contaminated vernal pool and salt marsh sediments under contrasting photoperiod and temperature regimes. Aquatic Toxicology. 2006; 78 (2):167-175.
Chicago/Turabian StyleD Angeler; B Sanchez; Gregorio Garcia; Jose Manuel Moreno. 2006. "Community ecotoxicology: Invertebrate emergence from Fire Trol 934 contaminated vernal pool and salt marsh sediments under contrasting photoperiod and temperature regimes." Aquatic Toxicology 78, no. 2: 167-175.
David G. Angeler; Gregorio García. Using emergence from soil propagule banks as indicators of ecological integrity in wetlands: advantages and limitations. Journal of the North American Benthological Society 2005, 24, 740 -752.
AMA StyleDavid G. Angeler, Gregorio García. Using emergence from soil propagule banks as indicators of ecological integrity in wetlands: advantages and limitations. Journal of the North American Benthological Society. 2005; 24 (4):740-752.
Chicago/Turabian StyleDavid G. Angeler; Gregorio García. 2005. "Using emergence from soil propagule banks as indicators of ecological integrity in wetlands: advantages and limitations." Journal of the North American Benthological Society 24, no. 4: 740-752.
Metal mobility and the fractionation of elements and thus the biological uptake of Zn, Pb and Cd by plants were investigated using a simplified analytical procedure for soluble and bioavailable metals using a four-step sequential extraction procedure. Results showed that there was a low proportion of immediately soluble metals, as well as a high proportion of metals that could be released and would so be available for plant uptake. In the sequential extraction procedure, considering the total partition, there was a large proportion of Pb, Cd and Zn extracted in a readily mobile form. In acidic soils the content of metals in ready mobile form (exchangeable-bound to carbonates as well as to Fe and Mn oxides) and bound to organic matter constitutes an important source of potentially available elements. The same pattern was observed in alkaline soils, where almost 80% of the metals could be remobilized and be potentially available to plants. Knowing the metal partitioning and mobility of heavy metals it is very important for evaluating the phytoremediation efficiency.
Andrea L. Zanuzzi; Gregorio García; Ángel Faz. Evaluation of heavy metal availability prior to an in situ soil phytoremediation program. Biogeochemistry 2005, 16, 187 -194.
AMA StyleAndrea L. Zanuzzi, Gregorio García, Ángel Faz. Evaluation of heavy metal availability prior to an in situ soil phytoremediation program. Biogeochemistry. 2005; 16 (2):187-194.
Chicago/Turabian StyleAndrea L. Zanuzzi; Gregorio García; Ángel Faz. 2005. "Evaluation of heavy metal availability prior to an in situ soil phytoremediation program." Biogeochemistry 16, no. 2: 187-194.
Many sites in the industrial region of Kattedan near Hyderabad, Andhra Pradesh (AP), India are contaminated with high concentrations of lead. The use of plants to remove toxic metals from soils (phytoremediation) is emerging as a potential strategy for cost-effective and environmentally sound remediation of contaminated soils. We studied remediation of soils contaminated with lead using a lead hyperaccumulating plant, Hemidesmus indicus. The ability of this plant to accumulate lead in shoots and roots was studied with pot experiments. The results showed that accumulation was maximum in roots for the first 1-3 weeks and later for a contact period of three months, the accumulation rate was maximum in shoots. In addition we used various chelating agents such as EDTA, HEDTA, DTPA and CDTA to determine the best chemical modifier for efficient lead removal from contaminated soils. The effect on lead accumulation of plant in the presence of various metal co-ions was also studied. An attempt was made for the decontamination of lead from five different "Real-life" soils of Kattedan using H. indicus.
K. Chandra Sekhar; C.T. Kamala; N.S. Chary; V. Balaram; Gregorio Garcia. Potential of Hemidesmus indicus for phytoextraction of lead from industrially contaminated soils. Chemosphere 2005, 58, 507 -514.
AMA StyleK. Chandra Sekhar, C.T. Kamala, N.S. Chary, V. Balaram, Gregorio Garcia. Potential of Hemidesmus indicus for phytoextraction of lead from industrially contaminated soils. Chemosphere. 2005; 58 (4):507-514.
Chicago/Turabian StyleK. Chandra Sekhar; C.T. Kamala; N.S. Chary; V. Balaram; Gregorio Garcia. 2005. "Potential of Hemidesmus indicus for phytoextraction of lead from industrially contaminated soils." Chemosphere 58, no. 4: 507-514.