The origin of fluoride in the granitic aquifer of Porto Alegre, Southern Brazil

Viero, Antonio Pedro; Roisenberg, Claudio; Roisenberg, Arí; Vigo, Angel Del

doi:10.1007/s00254-008-1273-5

Cited by 40 publications

(17 citation statements)

References 6 publications

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“…Furthermore, local physiography, climate and geological conditions were taken into account in the analysis of the hydrochemical data. Viero et al (2008) used a similar technique to study the source of fluoride in the granitic aquifer of Porto Alegre, Southern Brazil.…”

Section: Resultsmentioning

confidence: 99%

Fluoride enrichment mechanism and geospatial distribution in the volcanic aquifers of the Middle Awash basin, Northern Main Ethiopian Rift

Furi

Razack

Abiye

et al. 2011

Journal of African Earth Sciences

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Section: Resultsmentioning

confidence: 99%

Fluoride enrichment mechanism and geospatial distribution in the volcanic aquifers of the Middle Awash basin, Northern Main Ethiopian Rift

Furi

Razack

Abiye

et al. 2011

Journal of African Earth Sciences

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“…Concentration gradients of SO 2− 4 and Cl − in Florida occur from inland to coastal areas as well as in deep water (Sacks et al, 1995), explaining the relatively higher amount of chloride and sulfate. The comparably low values for south Brazilian sampling locations are not surprising, given that such coastal bodies of water are often fed by groundwater (Santos et al, 2008) that predominately consists of bicarbonate water and low chloride and sulfate contents (Gianesella-Galvão and Arcifa, 1988;Viero et al, 2009). The detected relationship between morphotypes and chloride and sulfate contents could thus mirror the hydrochemical compositions resulting from the different hydrogeological conditions of the regions.…”

Section: Potential Environmental Drivers Of Valve Shape Variationmentioning

confidence: 89%

“…The subject of study is the valves of the Neotropical cytheroidean ostracod species, Cytheridella ilosvayi. Studies by von Daday (1905) and Wrozyna et al (2016Wrozyna et al ( , 2018a already demonstrated considerable biogeographical variation in valve morphology among Floridian, Mexican, and Brazilian populations of that species. Morphological differences in populations of C. ilosvayi are discernible in both valves and appendages, adult and juvenile (A-1 to A-3) stages, and across sexes, suggesting that morphological divergence is a result of long-term biogeographic isolation (Wrozyna et al, 2018b).…”

mentioning

confidence: 94%

Significance of climate and hydrochemistry on shape variation – a case study on Neotropical cytheroidean Ostracoda

et al. 2018

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Abstract. How environmental change affects a species' phenotype is crucial not only for taxonomy and biodiversity assessments but also for its application as a palaeo-ecological and ecological indicator. Previous investigations addressing the impact of the climate and hydrochemical regime on ostracod valve morphology have yielded contrasting results. Frequently identified ecological factors influencing carapace shape are salinity, cation, sulfate concentrations, and alkalinity. Here, we present a thorough approach integrating data with the carapace outline and surface details of the ubiquitous Neotropical cytheroidean ostracod species Cytheridella ilosvayi, as well as several climatic and hydrochemical variables, in order to investigate a potential link between morphology and environmental conditions. A recent study previously demonstrated considerable biogeographical variation in valve morphology among Floridian, Mexican and Brazilian populations of this species. We hypothesize that the climatic differences between the regions it inhabits and associated differences in hydrochemical regimes have influenced valve morphology and eventually led to biogeographically distinctive groups. Generalized least-squares Procrustes analyses based on outline and structural features were applied to the left and right valves of adult females and males. The analyses identified relative carapace length and shape symmetry as most important morphological characteristics representing shape differences across all datasets. Two-block partial least-squares analyses and multiple regressions indicate strong relationships between morphological and environmental variables, specifically with temperature seasonality, annual precipitation and chloride and sulfate concentrations. We suggest that increased temperature seasonality slowed down growth rates during colder months, potentially triggering the development of shortened valves with well-developed brood pouches. Differences in chloride and sulfate concentrations, related to fluctuations in precipitation, are considered to affect valve development via controlling osmoregulation and carapace calcification. The factors identified by our analyses represent hitherto unknown drivers for ostracod ecophenotypy in other species and therefore suggest that environmental predictors for morphological variability are not consistent across non-marine ostracods.

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“…given that such coastal water bodies are often fed by groundwater (Santos et al, 2008) that are dominated by bicarbonate waters and low chloride and sulfate contents (Gianesella-Galvăo and Arcifa, 1988;Viero et al, 2009). The detected relationship between morphotypes and chloride and sulfate contents, respectively, could thus mirror the hydrochemical compositions resulting from different hydrogeological conditions of the regions.…”

Section: +mentioning

confidence: 99%

Impact of climate and hydrochemistry on shape variation – a case study on Neotropical cytheroidean Ostracoda

Wrozyna¹,

Neubauer²,

Meyer³

et al. 2017

Preprint

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Abstract. How environmental change affects a species' phenotype is crucial not only for taxonomy and biodiversity assessments but also for their application as (paleo-)ecological indicators. Previous investigations addressing the impact of climate and hydrochemical regime on ostracod valve morphology have yielded quite contrasting results. Frequently identified ecological factors influencing carapace shape are salinity, cation and sulphate concentrations and alkalinity. Here, we present a thorough approach integrating data from carapace outline and surface details of the ubiquitous Neotropical cytheroidean 15 ostracod species Cytheridella ilosvayi, as well as several climatic and hydrochemical variables, in order to investigate a potential link between morphology and environmental conditions. A previous study lately demonstrated considerable biogeographical variation in valve morphology among Floridian, Mexican and Brazilian populations of this species. We hypothesize that the climatic differences between the regions it inhabits and associated differences in hydrochemical regimes have influenced valve morphology and eventually led to biogeographically distinctive groups. Generalized least-squares 20Procrustes Analyses based on outline and structural features were applied to left and right valves of adult females and males.The analyses identified relative carapace length and shape symmetry as most important morphological characteristics representing shape change across all datasets. Two-block partial least-squares analyses and multiple regressions indicate strong relationships between morphological and environmental variables, specifically with temperature seasonality, annual precipitation and chloride and sulphate concentrations. We hypothesize that increased temperature seasonality slowed down 25 growth rates during colder months, potentially triggering the development of shortened valves with well-developed brood pouches. Differences in chloride and sulphate concentrations, related to fluctuations in precipitation, are considered to affect valve development via controlling osmoregulation and carapace calcification. These factors represent hitherto unknown drivers for ostracod ecophenotypy and emphasise that environmental predictors for morphological variability are not consistent across non-marine ostracods. 30Biogeosciences Discuss., https://doi

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The origin of fluoride in the granitic aquifer of Porto Alegre, Southern Brazil

Cited by 40 publications

References 6 publications

Fluoride enrichment mechanism and geospatial distribution in the volcanic aquifers of the Middle Awash basin, Northern Main Ethiopian Rift

Fluoride enrichment mechanism and geospatial distribution in the volcanic aquifers of the Middle Awash basin, Northern Main Ethiopian Rift

Significance of climate and hydrochemistry on shape variation – a case study on Neotropical cytheroidean Ostracoda

Impact of climate and hydrochemistry on shape variation – a case study on Neotropical cytheroidean Ostracoda

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