Mid and late Holocene multiproxy analysis of environmental changes linked to sea-level fluctuation and climate variability of the Río de la Plata estuary

Mourelle, Dominique; Prieto, Aldo R.; Pérez, Laura; García-Rodríguez, Felipe; Borel, C. Marcela

doi:10.1016/j.palaeo.2015.01.006

Cited by 43 publications

(32 citation statements)

References 51 publications

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“…Amaral et al (2012) also registered marine influence in the Jaguaruna region, South-central portion of the Coastal Plain of Santa Catarina, between approximately 5000 to 2580 yr BP, based on diatoms and isotopes. Several palynological studies (e.g., Cordeiro and Lorscheitter 1994, Lorscheitter and Dillenburg 1998, Medeanic et al 2001, Meyer et al 2005a In studies of Holocene sediments in Argentina (Bahía Blanca and Arroyo La Ballanera) and Uruguay (Río de La Plata northeastern coast), marine input was identified from associations of acritarchs with the dinoflagellate cysts Spiniferites and Operculodinium (Borel and Gómez 2006, Borel 2007, Mourelle et al 2015. Borel and Gómez (2006) and Borel et al (2007) identified, in addition to Michrystridium sp., an acritarch named Acritarch sp.…”

Section: Discussionmentioning

confidence: 99%

“…The genus Michrystridium has been also found in Holocene sediments in Uruguay (Mourelle et al 2015) and in Argentina (Borel andGómez 2006, Borel 2007). Borel and Gómez (2006) described a taxon with the same characteristics as found in our material, named as Michrystridium sp., with 0.5-1 µm of exine thickness, spines of 1-2 µm of height and 9-19 µm of overal diameter, as well as openings in tear forms in some species.…”

Section: Serjeant and Stancliffe 1994mentioning

confidence: 99%

“…Thus, the record of certain marine palynomorphs and the analysis of their frequency and relative abundance in comparison with continental palynomorphs are commonly used as proxies for the delimitation of transgressive and regressive sea level events. This has been done for Brazilian (e.g., Cordeiro and Lorscheitter 1994, Behling and Negrelle 2001, de Oliveira et al 2005, Meyer et al 2005a, Southern South American (e.g., Vilanova et al 2006, Borremei and Quattrocchio 2007, Quattrocchio et al 2008, Mourelle et al 2015 and other continents (e.g., de Vernal and Giroux 1991, de Vernal 2009, Mudie et al 2011, Richards et al 2014, in most cases integrated with other tools of analysis, such as the sedimentology and geochronological calibration.…”

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confidence: 99%

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Paleoenvironmental evolution of the coastal plain of Southern Brazil: palynological data from a Holocene core in Santa Catarina State

Kuhn

Souza

Cancelli

et al. 2017

An. Acad. Bras. Ciênc.

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This paper presents a paleoenvironmental reconstruction from palynological analyses of a sedimentary core of Holocene age, drilled at municipality of Garopaba (Santa Catarina), Southern Brazil. A total of 46 samples was collected for palynological analyses in the 450 cm-long core PCSC-3, as also three samples for radiocarbon dating and granulometric analyses. The palynological content includes 84 taxa related to pollen grains of angiosperms (38) and gimnosperm (3), spores of pteridophyta (16) and bryophyta (2), spores of fungi (8), algae (3), acritarchs (3), dinoflagellate cysts (2) and microforaminiferal linings (1). Three specimens of acritarchs are described and illustrated in detail. Three palynological phases were defined based on changes in assemblages: Phase I, Phase II and Phase III. The Phase I is characterized as a lagoonal paleoenvironment with marine influence from the beginning of the sedimentation (5390 cal yr BP), based on occurrences of acritarchs, dinoflagellate cysts and microforaminiferal linings. The Phase II (3032 yr BP until 858 cal yr BP) also is characterized by a lagoonal paleoenvironment, however, presented decrease in percentage of marine elements and increase in freshwater algae record, suggesting less marine influence in the lagoonal body. In Phase III (last 856 years), underwater sedimentation prevailed, under swamp-like conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Serjeant and Stancliffe 1994mentioning

confidence: 99%

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confidence: 99%

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Paleoenvironmental evolution of the coastal plain of Southern Brazil: palynological data from a Holocene core in Santa Catarina State

Kuhn

Souza

Cancelli

et al. 2017

An. Acad. Bras. Ciênc.

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“…Similarly, the Coastal Plain of the South Atlantic margin of South America offers further environmental proxies (Martínez & Rojas, 2013;Mourelle et al, 2015;Candel & Borromei, 2016).…”

Section: Final Remarksmentioning

confidence: 99%

New Insights on the systematic classification of certain palynological taxa (tintinnomorphs) from Holocene deposits of the Coastal Plain of Southern Brazil

Silva¹,

Souza²,

Waveren³

2017

Rev. bras. paleontol.

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-Tintinnomorphs is a term used for the grouping of palynomorphs resembling organic remains of tintinnids, which are not always identifiable as true lorica, cysts or pouch, being able to correspond to other protozoans and may even represent others structures of distinct organisms, such as rotifers and turbellarians. This paper presents tintinnomorphs recorded in Holocene sediments of the well PSC-03, drilled in the Coastal Plain of Santa Catarina, southern Brazil. A total of six tintinnomorphs types is described and illustrated (SPHERO-1, ELELNO-14, ESABNO-6, HEXANO-2, RECTNO-1, AROBNO-3), some of which are compared with specimens previously reported from Quaternary deposits of southern Brazil, southern South America and other regions of the world. Although tintinomorphs are associated to marine palynomorphs, they cannot be used as a conclusive paleoenvironmental evidence due to uncertainties about their biological affinity.Key words: tintinnomorphs, tintinnids, Holocene, Coastal Plain of Santa Catarina.RESUMO -Tintinomorfos é um termo usado no agrupamento de palinomorfos assemelhados a restos orgânicos de tintinídeos, os quais nem sempre são passíveis de serem identificados como verdadeiras lóricas, cistos ou bolsas, podendo corresponder a outros protozoários e até representar outras estruturas de organismos distintos, como rotíferos e turbelários. Este trabalho apresenta tintinomorfos registrados em sedimentos do Holoceno do poço PSC-03, perfurado na Planície Costeira de Santa Catarina, sul do Brasil. Um total de seis tipos de tintinomorfos é descrito e ilustrado (SPHERO-1, ELELNO-14, ESABNO-6, HEXANO-2, RECTNO-1, AROBNO-3), alguns dos quais comparados a espécimes previamente registrados em depósitos quaternários do sul do Brasil, sul da América do Sul e outras regiões do mundo. Embora estejam associados a palinomorfos marinhos, tintinomorfos não podem ser utilizados como indicadores paleoambientais conclusivos devido às incertezas sobre sua afinidade biológica.

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“…In particular, palynological analyses in the campos region of Uruguay revealed that pollen and spores in surface samples (Mourelle & Prieto 2012) and Holocene records (Iriarte 2006;García-Rodríguez et al 2010;Mourelle et al 2015a;b) are very diverse. However, even though several pollen and spores atlas (e.g.…”

Section: Introductionmentioning

confidence: 99%

Pollen and spores from surface samples in the campos region of Uruguay and their paleoecological implications

Mourelle¹,

Prieto

2016

Acta Bot. Bras.

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In this study we describe and illustrate pollen and spores that have been identifi ed as signifi cant in modern and fossil samples from the campos region of Uruguay. We provide new information about modern pollen assemblages and their relationship to the vegetation types of this region. We discuss the taxonomic limitations of pollen and spores and their representation in both modern and fossil samples. We highlight the importance of identifying both silent and key indicator taxa for making accurate paleoecological interpretations. We also emphasize the importance of knowing the pollination strategies of parental plants because many of them are zoophilous, and so small changes in the proportions of their pollen grains in fossil assemblages could refl ect important changes in vegetation. Th is study presents a practical approach to paleoecological research, which not only produces robust results in studies of the campos region, but can be applied to other grassland ecosystems, including those in temperate regions.

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Mid and late Holocene multiproxy analysis of environmental changes linked to sea-level fluctuation and climate variability of the Río de la Plata estuary

Cited by 43 publications

References 51 publications

Paleoenvironmental evolution of the coastal plain of Southern Brazil: palynological data from a Holocene core in Santa Catarina State

Paleoenvironmental evolution of the coastal plain of Southern Brazil: palynological data from a Holocene core in Santa Catarina State

New Insights on the systematic classification of certain palynological taxa (tintinnomorphs) from Holocene deposits of the Coastal Plain of Southern Brazil

Pollen and spores from surface samples in the campos region of Uruguay and their paleoecological implications

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