Diatom assemblages of thermal and mineral waters from volcanic environments in São Miguel Island, Azores

Quintela, Ana; Almeida, Salomé F.P.; Terroso, Denise; Silva, Eduardo Ferreira da; Forjaz, V. H.; Rocha, Fernando

doi:10.1080/0269249x.2013.822833

Cited by 23 publications

(17 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…70 • C (Nikulina and Kociolek, 2011). In the cited work, the main represented genera are Pinnularia and Nitzschia, as in the thermo-mineral waters of Katlanovska Banja (Stavreva-Veselinovska & Todorovska, 2010) and Sao Miguel Island, Azores (Quintela et al, 2013). Meanwhile in our work, Nitzschia is the best represented while Pinnularia latarea var.…”

Section: Stephanocyclus Menenghinianasupporting

confidence: 55%

“…thermophila and Nitzschia hantzschiana are the most common. Among the identified diatoms in this work, Achnanthidium exiguum, Gomphonema parvulum, Amphora ovalis, A. veneta and A. pediculus, have been previously reported as thermophiles, at 40-58 • C (Mannino, 2007;Nikulina & Kociolek, 2011;Quintela et al, 2013;Stavreva-Veselinovska & Todorovska, 2010). Unlike the aforementioned studies, in the current study the diatoms were only microscopically observed within the algal mats.…”

Section: Stephanocyclus Menenghinianamentioning

confidence: 64%

See 1 more Smart Citation

Thermophile mats of microalgae growing on the woody structure of a cooling tower of a thermoelectric power plant in Central Mexico

Covarrubias¹,

Cantoral-Uriza²,

Casas-Flores³

et al. 2016

Revista Mexicana de Biodiversidad

View full text Add to dashboard Cite

show abstract

Section: Stephanocyclus Menenghinianasupporting

confidence: 55%

Section: Stephanocyclus Menenghinianamentioning

confidence: 64%

Thermophile mats of microalgae growing on the woody structure of a cooling tower of a thermoelectric power plant in Central Mexico

Covarrubias¹,

Cantoral-Uriza²,

Casas-Flores³

et al. 2016

Revista Mexicana de Biodiversidad

View full text Add to dashboard Cite

show abstract

“…heter-ovalvum, A. sphaerophora, occur in Kenyan springs. Also, A. exiguum, G. parvulum, A. ovalis have been previously reported as thermophiles existing at 40-58°C(Quintela et al, 2013;Covarrubias et al, 2016). Moreover, A. exiguum has been recorded in all samples collected from the limnocrene springs of Bunica that are situated in the south of Bosnia and Herzegovina, and this species has been frequently found in many alkaline hot springs(DeDić et al, 2015).…”

mentioning

confidence: 83%

Diatom diversity in some hot springs of northern Thailand

2018

View full text Add to dashboard Cite

Diversity of hot spring diatoms in northern Thailand was studied. Forty-six diatom species were identified in eight localities. The dominant species according to high relative abundance were Diatomella balfouriana (41.7%), Achnanthidium exiguum (20.9%) and Anomoeoneis sphaerophora (11.2%). Moreover, Caloneis molaris, Craticula acidoclinata, Navicula subrhynchocephala and Pinnularia saprophila were recorded as species new to Thailand. The NMDS ordination revealed variation in species composition of eight different hot springs and correlation with the existing environmental variables. Silicon dioxide (SiO2), pH, conductivity, water temperature and total hardness were statistically significant factors affecting relative abundance of Achnanthidium exiguum, Amphora montana, Caloneis aequatorialis, Cocconeis placentula, Craticula cuspidata, Diploneis elliptica, Gomphonema affine, Gomphonema augur, Halamphora fontinalis, Planothidium lanceolatum, Pinnularia abaujensis, Sellaphora lanceolata and Stauroneis anceps.

show abstract

“…Studies on springs located in volcanic grounds have been made in dormant or active volcanoes worldwide, to characterize mineral water discharges (Shevenell and Goff 1993;Valentino and Stanzione 2003;Tassi et al 2003;Evans et al 2006;Minissale et al 2007), to calculate weathering rates (Rademacher et al 2005; Van der Weidjen and Pacheco 2003), to compute the total chemical weathering fluxes from volcanic islands (Rad et al 2011;Schopka and Derry 2012), and to define conceptual models about the functioning of groundwater systems (Irawan et al 2009). In the Azores, a few specific contributions have been published, mainly about groundwater composition (Cruz and Amaral 2004;Cruz and França 2006;Cordeiro et al 2012), chemical weathering rates (Freire et al 2014), diatom assemblages (Quintela et al 2013) and pelotherapy (Terroso 2005;Terroso et al 2006).…”

Section: Introductionmentioning

confidence: 98%

Groundwater composition in perched-water bodies in the north flank of Fogo volcano (São Miguel, Azores): main causes and comparison with river water chemistry

et al. 2014

View full text Add to dashboard Cite

A set of 46 springs located in the north flank of Fogo volcano (São Miguel, Azores) were sampled to characterize groundwater chemistry. The majority of the discharge from volcanic rocks with acidic character (95 %), at an elevation range of 200-400 m a.s.l., and the average discharge are usually not higher than 2 L/s. Nevertheless, the discharge in a few springs from trachytic lava flows can be higher (21.3 L/s). A group of 12 surface water samples were also collected twice along the Ribeira Grande River. Groundwater average temperature ranges between 19.6 and 20.7°C, and it is possible to depict two groups of discharges: thermal waters (16.7 %), with a temperature range from 27.8 to 71.2°C, and cold waters, with temperature under 20°C. In this latter group, temperature is inversely proportional to elevation. The average pH and conductivity range, respectively, between 5.7 and 7.8 and 291-425 lS/cm. Nevertheless, higher conductivity values were measured in boiling pools. Groundwater mainly belongs to the Na-HCO 3 to Na-Cl types. The major-ion relative composition of the cold springs shows a decreasing order for cations as Na [ Ca [ K [ Mg and for anions HCO 3 [ Cl [ SO 4 . In thermal discharges the relative composition is, respectively, Na [ Ca [ K [ Mg and SO 4 [ HCO 3 [ Cl. The average nitrate content ranges from 2.09 to 2.57 mg/L comparing all the sampling periods, and the cumulative probability plot shows that about 75 % of the samples present values lower than 1.98 mg/L. Results show clearly that the higher nitrate measurements are observed in river waters and springs sampled in areas where pasture lands are dominant.

show abstract

Diatom assemblages of thermal and mineral waters from volcanic environments in São Miguel Island, Azores

Cited by 23 publications

References 17 publications

Thermophile mats of microalgae growing on the woody structure of a cooling tower of a thermoelectric power plant in Central Mexico

Thermophile mats of microalgae growing on the woody structure of a cooling tower of a thermoelectric power plant in Central Mexico

Diatom diversity in some hot springs of northern Thailand

Groundwater composition in perched-water bodies in the north flank of Fogo volcano (São Miguel, Azores): main causes and comparison with river water chemistry

Contact Info

Product

Resources

About