Biodiversidade e distribuição das diatomáceas (Bacillariophyceae) de sedimentos superficiais nos reservatórios em cascata do rio Paranapanema, SP/PR, Brasil

Fontana, Luciane; Bicudo, Denise C.

doi:10.1590/s2236-89062012000400007

Cited by 14 publications

(7 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…rostrata (Østrup) Lange-Bertalot. Species mainly found in the periphytic community, prostate, in lotic environments (Moro & Fürstenberger 1997, Bartozek et al 2013, also found in sedimentary samples in Brazil (Fontana & Bicudo 2012). This species was found in 64% of the samples, with higher values of abundance during the lake and backwater periods.…”

Section: Planothidium Aff Rostratum (øStrup) Lange-bertalotmentioning

confidence: 94%

“…Ecological information: species erroneously identified as Planothidium lanceolatum (Brébisson ex Kützing) H. Lange-Bertalot in Brazilian studies, found in the periphytic and phytoplanktonic community, mainly in lotic environments. Species with an optimum at mesotrophic waters, tolerating a large range of temperature (Burliga et al 2005, Bes et al 2012, Fontana & Bicudo, 2012, Bartozek et al 2013, Wetzel & Ector 2014. This species was recorded in 73% of the samples, with greater abundance in the lake phase.…”

Section: Gomphonema Sp 1 Figures 36-37 83mentioning

confidence: 98%

“…Ecological information: recently transferred of the Diadesmis to Humidophila genus (Lowe et al 2014). Reported in paleolimnological studies in Brazilian environments (Costa-Böddeker et al 2012, Fontana & Bicudo 2012, related to aerophilic habit and lownutrient. Benthic species, such as D. confervaceae, occur in shallow waters and wet environments.…”

Section: Diadesmis Confervacea Kützing Die Kieselschaligenmentioning

confidence: 99%

See 2 more Smart Citations

Subfossil and periphytic diatoms from the upper Paraná river, Brazil: last ~1000 years of a transition period

Ruwer

Rodrigues

2018

Hoehnea

View full text Add to dashboard Cite

Considering the lack of knowledge regarding the paleolimnology and the diatom flora from the sediment in Brazilian aquatic environments, this study aimed to provide information about diatom biodiversity and autoecology in an environment located in the upper Paraná river floodplain. Sediment and periphytic samples were collected from a swamp located in an island of the upper Paraná river floodplain. Sediment samples were obtained by collecting a core of ~2 m with a calibrated date of 726 to 903 cal yr BP near the base. The core was sliced into layers of 2.5 cm, totaling 41 samples. Periphytic diatom samples were obtained by scraping macrophytes' petioles, totaling two samples. The community was represented by 31 species belonging to 15 genera. All of the taxa were found in the sediment record, and 15 were present in the periphyton. The three new records (Eunotia longicamelus, Planothidium bagualensis and Luticola hustedtii) reinforce the importance of paleolimnological and periphytic studies to increase information about the aquatic biodiversity.

show abstract

Section: Planothidium Aff Rostratum (øStrup) Lange-bertalotmentioning

confidence: 94%

Section: Gomphonema Sp 1 Figures 36-37 83mentioning

confidence: 98%

Section: Diadesmis Confervacea Kützing Die Kieselschaligenmentioning

confidence: 99%

See 1 more Smart Citation

Subfossil and periphytic diatoms from the upper Paraná river, Brazil: last ~1000 years of a transition period

Ruwer

Rodrigues

2018

Hoehnea

View full text Add to dashboard Cite

show abstract

“…Humidophila contenta, Encyonema silesiacum, Navicula cryptocephala and Luticola acidoclinata are species that usually occur in benthic or subaerial habitats (Lowe et al, 2014;Round et al, 1990;Cox, 1995) and ecosystems with low nutrient concentrations (Costa-Böddeker et al, 2012;Fontana & Bicudo, 2012;Poulicková et al, 2004;Lange-Bertalot, 1996;Van Dam et al, 1994). Gomphonema parvulum seems to occur in different types of environments and habitats, but is most commonly found attached to some kind of substrate (Tremarin et al, 2009;Wojtal, 2003;Sayer & Roberts, 2001;Moro & Fürstenbeger, 1997;Dawson, 1972).…”

Section: Spatially and Temporally Integrated Characterization Of The Diatom Distributionmentioning

confidence: 99%

Water quality and spatial and seasonal dynamics in the largest water supply reservoir in Brazil and implications for diatom assemblages

2021

Self Cite

View full text Add to dashboard Cite

Aim in this paper we investigated how spatial factors and seasonal dynamics influenced the diatom community in a tropical deep environment of low productivity waters in Brazil. Methods we used physical and chemical characteristics of the water and planktonic diatoms from 9 sampling stations during dry (austral winter) and wet (austral summer) seasons (N = 18) as the outline to identify water quality, spatial and seasonal patterns. To evaluate spatially and temporally integrated events from the recent past (approximately the last 5 years before sampling), and the species from diverse habitats of the system, we used diatoms from the surface sediment (top 2 cm, N = 9). Since we used the top 2 cm of surface sediment containing the dead diatoms that were deposited over recent past of the reservoir, seasonal sampling of the sediment was not needed. Results during the dry season heavily silicified long colonial planktonic diatom species associated mainly with higher mixing depth, pH, and transparency dominated the plankton, whereas in the wet season the reservoir became stratified, favoring planktonic solitary diatoms with high surface volume ratios. For the sediment, a general pattern emerged where planktonic species dominated in the deep sections of the reservoir, and the abundance of benthic species in shallow areas near the tributaries increased. Conclusions the diatom assemblages was mainly influenced by seasonal variations and mixing regime. Surface sediment samples provided longer-term information, and revealed habitat differentiation shaping diatom assemblages. Overall, the small centric planktonic Aulacoseira tenella (Nygaard) Simonsen stood out as the most abundant species in the entire reservoir in both, the plankton and the sediment, indicating that size and shape serve as adaptive strategies for buoyancy and nutrient uptake stand as a competitive advantage in deep low productivity environments.

show abstract

“…Material examined: BRAZIL, MATO GROSSO DO SUL: Taquaruçú, Patos Lake, 23.III.2018, sediment, D.T. Ruwer (Nupélia UEM -18098, 18101-102, 18104, 18106-107, 18109-111, 18113- Bicca et al (2011), Costa et al (2017 and Fontana & Bicudo (2012). The great morphological variability of E. tridentula, exposed mainly in the work of Metzeltin et al (2005), emphasizes the necessity for a taxonomic revision of this group.…”

Section: Aulacoseira Thwaites 1848mentioning

confidence: 99%

Sediment diatoms from Upper Paraná River floodplain lakes

Ruwer

Rodrigues

2021

Iheringia Ser Bot

View full text Add to dashboard Cite

Considering changes in biodiversity over large time scales, the use of sediments to access knowledge about current and past diversity has recently been highlighted as an emerging field for biodiversity science. Therefore, this work aimed to use lake sediments to perform a taxonomic survey of abundant diatoms from two lakes sediments from the Upper Paraná River floodplain and contributes to new species registrations. For diatom flora analysis were selected sediment samples from lakes. The diatoms with relative abundance ≥ 2% in at least one sediment sample were analyzed and identified under light microscopy. The study resulted in the identification of 47 taxa, including 40 at the specific level and seven possible new taxa. Among the taxa identified, 12 taxa (27%) of these had never before been documented in the Upper Paraná River floodplain.

show abstract

Biodiversidade e distribuição das diatomáceas (Bacillariophyceae) de sedimentos superficiais nos reservatórios em cascata do rio Paranapanema, SP/PR, Brasil

Cited by 14 publications

References 37 publications

Subfossil and periphytic diatoms from the upper Paraná river, Brazil: last ~1000 years of a transition period

Subfossil and periphytic diatoms from the upper Paraná river, Brazil: last ~1000 years of a transition period

Water quality and spatial and seasonal dynamics in the largest water supply reservoir in Brazil and implications for diatom assemblages

Sediment diatoms from Upper Paraná River floodplain lakes

Contact Info

Product

Resources

About