Comunidades de esponjas do curso superior dos rios Paraná (Goiás) e Paraguai (Mato Grosso), Brasil, com redescrição de Oncosclera schubarti (Bonetto &amp; Ezcurra de Drago)

Batista, Twiggy Cristina Alves; Volkmer‐Ribeiro, Cecília

doi:10.1590/s0101-81752002000100010

Cited by 14 publications

(11 citation statements)

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“…Spicules of the following freshwater sponge species were detected in the sediments studied: -Ribeiro, 2002;Batista et al 2003). All such species have their spicular sets (megascleres, microscleres and gemmoscleres) illustrated in the above-cited papers.…”

Section: Sponge Spiculesmentioning

confidence: 98%

Use of spongofacies as a proxy for river-lake paleohydrology in Quaternary deposits of central-western Brazil

Parolin¹

2008

RBP

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Sediments obtained by vibrocoring from Samambaia Lake (22º36'S / 53º23'W) in Taquarussu, Mato Grosso do Sul State, Brazil, were dated using thermoluminescence. Grain size and organic content analysis were performed, and the freshwater sponge spicules present in the sediments were identified. The age of sediments ranged between TL 4,350 ± 210 and TL 32,740 ± 163 years BP. Spicules of the sponges Dosilia pydanieli, Metania spinata, Radiospongila amazonensis, Corvospongilla sp. and Oncosclera sp. were found. Analyses suggest an alternation of lotic and lentic phases, in agreement with earlier lines of evidence regarding the existence of paleodrainage in the region during the Late Pleistocene to the Mid-Holocene, as well as previously described paleoclimatic conditions. This work reinforces the reliability of the use of freshwater sponge spicules as proxy data in the proposition of paleoenvironmental reconstructions. The term spongofacies is introduced for the sedimentary sequences in which spicules of freshwater sponge species predominate and indicate specific paleoenvironmental conditions.

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Section: Sponge Spiculesmentioning

confidence: 98%

Use of spongofacies as a proxy for river-lake paleohydrology in Quaternary deposits of central-western Brazil

Parolin¹

2008

RBP

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“…Their extensive crusts may extend over sand and pebbles, contributing to the fixation of the river natural bottom. This same sponge community was seen living and was sampled from rocky substrates at Manso River, downstream the Manso Hydroelectric Power Plant (Batista & Volkmer-Ribeiro 2002). This river is a contributor to the upper Cuiabá River and thus to the left margin of the Paraguay River itself.…”

Section: Late Pleistocene (~21000-12200 Cal Yrs Bp)mentioning

confidence: 52%

Late Pleistocene/Holocene Environmental History of the Southern Brazilian Pantanal Wetlands

et al. 2019

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This study presents paleolimnological records from two lakes denominated locally as Lagoa Negra and Lagoa Castelo (Pantanal Brazilian Wetland), using sediment cores. The sediment core was dated using 14 C geochronologies and samples were analyzed for bulk density, grain size, organic matter, carbonate, phosphorus, carbon and nitrogen elemental and isotopic composition (δ 13 C and δ 15 N), sedimentary pigments and sponge spicules. Pollen and diatoms remains were analyzed only in Lagoa Negra because they were scanty and poorly preserved in Lagoa Castelo core. Paleolimnological and palynological records were used with the objective to gain a better understanding of the environmental history of the Pantanal during the last 21,000 cal yrs BP (calibrated years Before Present). The different phases in the development of the lakes were based on the palynological analysis of Lagoa Negra core (CONISS analysis) used as a proxy key. The Lagoa Negra core indicates than the late Pleistocene (~21,000 to 12,200 cal yrs BP) was marked by strong river-lake connectivity (~21,000-19,000 cal yrs BP and ~13,000-12,200 cal yrs BP) and with regression of the Paraguay River between ~19,000-13,000 cal yrs BP. The emergence of the gallery forest in the early to mid-Holocene (~12,200 to 8500 cal yrs BP) indicates wetter conditions, similar to the present. In such conditions began the development of Lagoa Negra, from ~11,500 cal yrs BP, with the deposition of fine organic-rich sediments. In the mid to late Holocene (8500 cal yrs BP to present) the connectivity with the river was reduced or lost completely, between ~8200 and 6500 cal yrs BP (Lagoa Negra). The semi-closed Lagoa Castelo reduced connectivity with the Paraguay River only about 6500 cal yrs BP, when abruptly occurs the transition to deposition of organic sediments. A reactivation of the river-lakes interaction was detected after this period, although not as intense as in the early Holocene.

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“…A raridade da ocorrência de C. seckti no PEDJ deve ser atribuída a que a espécie tem por habitat preferido o bentos rochoso de rios (BATISTA & VOLKMER-RIBEIRO 2002) Dimensões das escleras: megasclera óxeas com comprimento de 47,5-87,5 µm e média 68,8 µm; largura 2,5-5,0 µm e média 3,5 µm. Microsclera isoquela com comprimento 15-25µm e média 19,6 µm; largura 1,2-2,5 µm e média 1,9 µm.…”

Section: Os 12 Espécimes Registrados Incrustavam Raízes Deunclassified

“…7) A comunidade no presente amostrada, a qual somam-se os registros anteriormente efetuados (VOLKMER-RIBEIRO et al 1975), integra dez espécies que incrustam as partes submersas da vegetação de macrófitas (camalotais) que orla as ilhas desse delta, constituindo portanto uma assembléia que integra tanto o bentos lodoso e móvel (nas raízes de E. azurea) quanto o pleuston (nas raízes de E. crassipes). Oncosclera navicella, E. fragilis e C. seckti constituem exceção a essa regra, pois são espécies que incrustam preferencialmente o bentos rochoso de rios brasileiros (BATISTA & VOLKMER-RIBEIRO 2002). Essas espécies utilizam esporadicamente o substrato de macrófitas, formando espé-cimes de tamanhos diminutos, ou apenas gêmulas, com raras megascleras circundantes.…”

Section: V V V Var Ar Ar Ar Ariações Morf Iações Morf Iações Morf Iunclassified

Primeiro registro de Corvoheteromeyenia australis (Bonetto & Ezcurra de Drago) para o Brasil com chave taxonômica para os poríferos do Parque Estadual Delta do Jacuí, Rio Grande do Sul, Brasil

2003

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Comunidades de esponjas do curso superior dos rios Paraná (Goiás) e Paraguai (Mato Grosso), Brasil, com redescrição de Oncosclera schubarti (Bonetto & Ezcurra de Drago)

Cited by 14 publications

References 0 publications

Use of spongofacies as a proxy for river-lake paleohydrology in Quaternary deposits of central-western Brazil

Use of spongofacies as a proxy for river-lake paleohydrology in Quaternary deposits of central-western Brazil

Late Pleistocene/Holocene Environmental History of the Southern Brazilian Pantanal Wetlands

Primeiro registro de Corvoheteromeyenia australis (Bonetto & Ezcurra de Drago) para o Brasil com chave taxonômica para os poríferos do Parque Estadual Delta do Jacuí, Rio Grande do Sul, Brasil

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