Espongofauna da Área de Proteção Ambiental Meandros do rio Araguaia (GO, MT, TO), Brasil, com descrição de Heteromeyenia cristalina sp. nov. (Porifera, Demospongiae)

Batista, Twiggy Cristina Alves; Volkmer‐Ribeiro, Cecília; Melão, Maria da Graça Gama

doi:10.1590/s0101-81752007000300013

Cited by 13 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Uruguaya corallioides gemmoscleres and Trochospongilla repens megaslceres identifi ed in Core 3 (38 and 26 cm) and fl ooding episodes at Juriti alluvial fan indicate wetter conditions at 7,540 years BP compared with the present. According to Batista et al (2007), U. corallioides are most commonly found in rivers with turbulent fl ow. Diatoms frustules (30, 34 and 4 cm) indicate that small swamps (= charcos) were established in the distal portion of the Juriti alluvial fan most likely due to fl ood pulses.…”

mentioning

confidence: 99%

Late Pleistocene and Holocene paleoenvironments in ponds and alluvial sediments of Upper Paraná River, Brazil

Guerreiro¹,

Stevaux²,

Parolin³

et al. 2013

Rev. bras. paleontol.

View full text Add to dashboard Cite

mentioning

confidence: 99%

Late Pleistocene and Holocene paleoenvironments in ponds and alluvial sediments of Upper Paraná River, Brazil

Guerreiro¹,

Stevaux²,

Parolin³

et al. 2013

Rev. bras. paleontol.

View full text Add to dashboard Cite

“…Diferentes espécies deste gênero foram descritas em vários canais fluviais no Brasil, como nos rios Negro e Orinoco (Volkmer-Ribeiro & Almeida, 2005) e nos rios Araguaia e Paraná (Batista et al, 2007). Estes últimos autores também registraram espículas deste gênero em ambiente lêntico no Lago do Goiaba no Estado do Mato Grosso.…”

Section: Santos Et Al -Espículas De Esponjas Como Indicadores Paleoaunclassified

Análise de espículas de esponjas como indicadores paleoambientais em sedimentos lacustres no oeste da Bahia

Santos

Castro²,

Parolin

et al. 2017

Rev. bras. paleontol.

View full text Add to dashboard Cite

-ANALYSIS OF SPONGE SPICULES AS PALEOENVIRONMENTAL INDICATORS IN WESTERN BAHIA LACUSTRINE SEDIMENTS.The use of sponge spicules in sediments as proxy data has been successful in paleoenvironmental reconstructions. We recovered two sedimentary cores in two ponds located in San Francisco lowland in Western Bahia to understand the paleoclimatic and the lacustrine system dynamics. Sedimentary facies and granulometric analysis were perfomed. Also, organic matter content and presence of diatoms frustules were studied, besides the identification and quantification of sponge spicules detected in sediments, which were dated by 14 C. The sediment age ranged between 8410 to 3929 yrs cal BP, corresponding to the Holocene. Sponge spicules of the following species were found: Dosilia pydanieli, Heterorotula fistula, Metania spinata, Oncoslera sp., Radiospongilla inesi and Tubella variabilis. Analysis of the results suggest that the two lakes have a standardized climate pattern alternating between drier and wetter climates in relation to the current climate condition. However, the two lakes differ regarding the sedimentation rate and the microfossil content the pond of the northern portion showed lentic and lotic alternated phases, indicating a paleodrainage at the beginning of the upper Holocene, while the evidences in the southern pond of the lake system there are only lentic phases. Such evidences suggest that other physiographic factors and climate influenced the dynamics of these lakes, such as structure, litholog and tectonics of the ponds substrates.Key words: Quaternary, Holocene, San Francisco lowland, sponges.RESUMO -A utilização de espículas de esponjas em sedimentos como dado proxy vem obtendo sucesso em proposições de reconstruções paleoambientais. Para compreender as condições paleoclimáticas e dinâmicas do sistema lacustre, localizado na Depressão do São Francisco, no oeste do estado da Bahia, foram recuperados dois testemunhos em duas lagoas. Foram realizadas análises de fácies, ensaios granulométricos, de conteúdo de matéria orgânica e presença de diatomáceas, além da identificação e quantificação de espículas de esponjas detectadas nos sedimentos holocênicos, que foram datados por 14 C. A idade das amostras dos sedimentos variou entre 8.410 a 3.929 cal. AP. Foram encontradas espículas das esponjas Dosilia pydanieli, Heterorotula fistula, Metania spinata, Oncoslera sp, Radiospongilla inesi e Tubella variabilis. As análises sugerem que as duas lagoas tiveram situações climáticas com alternância entre fases mais secas e mais úmidas em relação ao clima atual. No entanto, as duas lagoas diferem no que tange à taxa de sedimentação e conteúdo microfossilífero. Para a lagoa da porção norte os resultados evidenciaram alternância de fases lênticas e lóticas, indicando uma paleodrenagem no início do Holoceno superior, enquanto as evidências da lagoa ao sul do sistema lacustre indicam apenas fases lênticas. Tais evidências sugerem que outros fatores fisiográficos, além do clima, influenciaram a dinâmica dessas la...

show abstract

“…At 210 cm in depth, the presence of fine rippled muddy sand, whole sponge spicules indicate a reduction in the unidirectional flow conditions, probably by blind channel formation in environments with lower channel connectivity (Parapotamic condition). The occurrence of Oncosclera navicella spicules in the blind channel deposits emphasizes the influence of flood flows and not in situ development, as this species lives in the lotic environment of rocky channels (Volkmer-Ribeiro and Pauls, 2000;Batista and Volkmer-Ribeiro, 2002;Batista et al, 2007) surrounded by riparian vegetation (Santos and Parolin, 2011). Occasionally, O. navicella can occupy vegetal substratum in the floodplains (Volkmer-Ribeiro and Tavares, 1997).…”

Section: Tablementioning

confidence: 99%

“…Among the biological indicators, sponge spicules have been shown to be a powerful tool for paleoenvironmental and paleoecological reconstructions (Batista et al, 2003(Batista et al, , 2007Parolin et al, 2003Parolin et al, , 2007Volkmer-Ribeiro et al, 2007;Parolin et al, 2008;Almeida et al, 2009;Kuerten et al, 2013). In addition, the use of sponges as a bio-indicator is, relatively easy and usually less expensive in both collecting and processing procedures compared with other bio-indicators, such as pollen, phytoliths and diatoms.…”

Section: Introductionmentioning

confidence: 99%

Sponges as a complement of sedimentary facies analysis in island deposits of Upper Paraná River

Zviejkovski

Stevaux

Leli

et al. 2017

Journal of South American Earth Sciences

View full text Add to dashboard Cite

This paper shows the importance of the sponge spicules as complement of sedimentary facies analysis in order to reconstruct the hydrach stages involved in island formation in the Upper Paran a River, Brazil. River in the study reach is anabranching with islands of different sizes covered by typical alluvial forest. We noted that the sponge spicules communities vary according to the changes in the environments involved in the island formation processes. The sponges were identified by their microscleres and gemoscleres in optical microscope as Metania spinata, Oncosclera navicella, Oncosclera jewelli, and possibly the genus Corvoheteromeyenia sp. (Ezcurra de Drago, 1979). By correlating the information coming from the sponges and sedimentary facies, it was possible to identify five phases of the island construction and their respective hydrach stages: 1) bar-island channel (Eupotamic stage), 2) blind channel (Parapotamic stage), 3) lake, 4) swamp (both Paleopotamic stage), and 5) forested island (Terrestrial stage). Using 14 C dating and rate of sedimentation, we observed that the development of these five phases took~900e1000 years. The data also supported the idea that the forest begin to be formed 134e160 years ago. We concluded that sponge is a strong tool on paleoenvironmetal reconstruction when used with another indicators (in this case the facies analysis) and can be applied other fluvial studies as river management especially for long-term impacted systems (by dams) as those of the Paran a River Basin.

show abstract

Espongofauna da Área de Proteção Ambiental Meandros do rio Araguaia (GO, MT, TO), Brasil, com descrição de Heteromeyenia cristalina sp. nov. (Porifera, Demospongiae)

Cited by 13 publications

References 4 publications

Late Pleistocene and Holocene paleoenvironments in ponds and alluvial sediments of Upper Paraná River, Brazil

Late Pleistocene and Holocene paleoenvironments in ponds and alluvial sediments of Upper Paraná River, Brazil

Análise de espículas de esponjas como indicadores paleoambientais em sedimentos lacustres no oeste da Bahia

Sponges as a complement of sedimentary facies analysis in island deposits of Upper Paraná River

Contact Info

Product

Resources

About