Effect of dumping and cleaning activities on the aquatic ecosystems of the Guadiamar River following a toxic flood

Prat, Narcı́s; Toja, Julia; Solà, Carolina; Burgos, María D.; Plans, Marc; Rieradevall, María

doi:10.1016/s0048-9697(99)00393-9

Cited by 57 publications

(43 citation statements)

References 30 publications

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“…Goede & Barton, 1990), and their positive relationship with fish condition has been reported before (Oliva-Paterna et al, 2003a and2003b). Other authors (Prat et al 1999;Ferreras-Romero et al 2003) found few aquatic macroinvertebrate families in the affected area of the Guadiamar River, and those present were more opportunistic and linked to lentic environments than those that inhabited the unaffected area. In our study, the reaches with lowest IBG, IBMWP and QBR values coincide with the affected area, where the spill deteriorated the riparian vegetation (Murillo et al, 1999).…”

Section: Discussionmentioning

confidence: 76%

Habitat quality affects the condition of Luciobarbus sclateri in the Guadiamar River (SW Iberian Peninsula): effects of disturbances by the toxic spill of the Aznalcóllar mine

et al. 2012

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This study analyzes the somatic condition of southern Iberian barbel Luciobarbus sclateri (Günther, 1868) in the Guadiamar River (SW Iberian Peninsula). This river was seriously affected by a toxic spill of about 4 million cubic meters of acidic water and 2 million cubic meters of mud rich in heavy metals. Once the spill removal works concluded, sites affected and unaffected by the accident were sampled to study its effects on the fish fauna. The ecological variables registered were related to water quality, physical state of reaches, ecological quality, resources exploited by fish, and potential intra-specific interactions. From an initial fifteen ecological variables, seasonal water flow and pH explained most of the variation in barbel condition. This study shows that the Guadiamar River, fifty-six months after the accident, is still undergoing a recovery process where, 2 beyond ecological variables, proximity to the affected area is the most influential factor for fish condition.

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Section: Discussionmentioning

confidence: 76%

Habitat quality affects the condition of Luciobarbus sclateri in the Guadiamar River (SW Iberian Peninsula): effects of disturbances by the toxic spill of the Aznalcóllar mine

et al. 2012

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“…The plankton accumulation of metals in Yeniçaga Lake changed on a monthly basis, and in this respect, seasonal differences were observed Gediz River (Aksoy 2005), Beyşehir Lake (Altındag and Yigit 2005), Balaton Lake (Nguyen et al 2005), Burdur Lake (Yigit and Altındag 2002), Guirdmar River (Prat et al 1999), Mascardi Lake (Markert et al 1997) ( p < 0.05). In studies conducted in the literature, it has been demonstrated that the relationship between heavy metal accumulation in plankton, and seasonal variation was significant in terms of the qualitative and quantitative characteristics of the organism, metal type, season, the water's physicochemical characteristics, and the trophic levels of aquatic systems (Marshall and Mellinger 1980;Kerrison et al 1998;Chen et al 2000).…”

Section: Resultsmentioning

confidence: 92%

Heavy metals in Yeniçağa Lake and its potential sources: soil, water, sediment, and plankton

Saygi

Yiğit

2011

Environ Monit Assess

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The distribution and accumulation of heavy metals (Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Mo, Cd, Sn, Ba, Pb) in the water, sediments, plankton of Yeniçağa Lake, and its potential sources (creeks, sewage, artesian well, soil) were investigated during 1-year study period as monthly or seasonally. Element analyses were performed by ICP-MS. Results showed that the trace and toxic elements (Al, As, Mn, Pb, Fe) concentration in lake water and/or its feeding sources were above the recommended water standards (WHO, EC, EPA, TS-266). It was found that the maximum accumulation of the heavy metals iron, aluminum, manganese, zinc, and barium in the sediment of Yeniçağa Lake. The accumulation order of trace metals were Fe > Al > Mn > Zn > Ba > Ni > Cr > As > Cu > Pb > Co > Mo > Sn > Cd in the lake, creeks sediment, and soil samples. The similar results suggest that the accumulation of heavy metals in the sediment is a natural process. Metals accumulated in the lake are naturally mixed from the soil. However, the presence of heavy metals in the analysis of artesian well water and sewage reveals that the transportation occurs also from the groundwater to the lake. The results obtained in plankton in Yeniçağa Lake showed that aluminum, iron, manganese, zinc, and barium were most accumulated elements in the plankton. The lower averages of lead prevalent in the water and sediment during some months were seen to have a significant mean accumulation in the plankton.

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“…The latter are usually non profitable to humans and they can even be hazardous. The bloom of cyanophytes and the decrease of chlorophytes caused by ponds fertilisation and/or high fish restocking densities to increase production in aquaculture (Lukowicz 1982;Boyd and Massaut 1999), the changes in the planktonic community when agriculture fertilisers (Antikainen et al 2005) or other pollutants (Prat et al 1999) reach the water, or the introduction of exotic fish species (Crivelli 1995), all are examples of the consequences of human activities. In ponds, eutrophication processes caused by excess of fertilisers illustrate how the pond ecosystem changes and the long term productivity decreases.…”

Section: Discussionmentioning

confidence: 99%

Tench, Tinca tinca (L.), fish farms as a tool for environmental education

et al. 2005

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Since 1968, year of the May Revolution in France, UNESCO realised that a rapid separation was developing between the human race and nature, especially in big cities. This resulted in the development of numerous Environmental Education Programmes for children. Tench fishfarms are a particularly good tool for educating children in the structure and function of freshwater ecosystems. The 'Vegas del Guadiana' fish farm (Badajoz, Spain) Environmental Education Programme, is included in the Transborder Environmental Education Programme and in INTERREG II, an European Community Initiative whose objective is to promote cross-border, international and interregional co-operation to encourage balanced development in Europe. Preliminary results have been evaluated and presented in the present work. The analysis of the efficiency of the programme was measured in children from ages 6 to 12. The results showed no significant differences among sex (t-Student=0.07, p=0.9470) nor social surroundings (t-Student=0.87, p=0.3910) but there were significant differences when comparing different ages (ANOVA, p=0.0437). In all cases, a significant increase in the knowledge and concern about the freshwater environment was found in children (Paired t-Student=)10.55, p=0.0001).

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Effect of dumping and cleaning activities on the aquatic ecosystems of the Guadiamar River following a toxic flood

Cited by 57 publications

References 30 publications

Habitat quality affects the condition of Luciobarbus sclateri in the Guadiamar River (SW Iberian Peninsula): effects of disturbances by the toxic spill of the Aznalcóllar mine

Habitat quality affects the condition of Luciobarbus sclateri in the Guadiamar River (SW Iberian Peninsula): effects of disturbances by the toxic spill of the Aznalcóllar mine

Heavy metals in Yeniçağa Lake and its potential sources: soil, water, sediment, and plankton

Tench, Tinca tinca (L.), fish farms as a tool for environmental education

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