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100 |
_aTâmega, Frederico Tapajós de Souza _951768 |
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245 | _aPalaeoenvironmental dynamics of Holocene shoreface bryoliths from the southern coast of Brazil | ||
300 | _aVol 29, issue 4, 2019 : (662-675 p.). | ||
520 | _aBeds of free-living coated nodules (coralline algae, bryozoans, acervulinid foraminifera) create shallow-water carbonate biogenic benthic habitats, which are sensitive to human disturbance and slow to recover. Holocene bryoliths, ranging from sub-spheroidal, sub-discoidal to sub-ellipsoidal in shape, were found scattered in the foredunes in ca. 30-km stretch along the Hermenegildo and Concheiros do Albardão beaches on the southernmost coast of Brazil (Santa Vitória do Palmar municipality, Rio Grande do Sul State). The dominating bryozoan species forming the bryolith is Biflustra holocenica Vieira, Spotorno-Oliveira and Tâmega sp. nov. The inner bryolith arrangement, generally asymmetrical, shows multilamellar and circumrotatory growth of colonies that envelop the bivalve Ostrea puelchana. Bryozoans and subordinate corals characterize the outer bryolith surfaces. The ichnogenera Gastrochaenolites (made by the boring bivalve Lithophaga patagonica) and Caulostrepsis occur throughout the bryoliths, from the inner part up to the outer surface. The studied bryoliths, originated in a shoreface setting at ca. 7910–7620 cal. yr BP and during subsequent storm waves, were resedimented onto the foreshore and foredunes (to ca. 5700 cal. yr BP) where the bryoliths were finally fossilized. | ||
650 |
_aBrazil, _951769 |
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650 |
_aBryozoa, _951770 |
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650 |
_a Holocene, _950806 |
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650 |
_apalaeoecology, _951356 |
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650 |
_ataxonomy _951771 |
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700 |
_aSpotorno-Oliveira, Paula _951772 |
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700 |
_aDentzien-Dias, Paula _951773 |
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700 |
_aBuchmann, Francisco Sekiguchi _951774 |
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700 |
_aVieira, Leandro Manzoni _951775 |
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700 |
_aMacario, Kita _951776 |
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700 |
_aNash, Merinda _951777 |
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700 |
_aGuimarães, Renato Bastos _951778 |
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700 |
_aFrancischini,, Heitor _951779 |
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700 |
_aBassi, Davide _951780 |
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773 | 0 |
_012756 _916504 _dLondon: Sage Publication Ltd, 2019. _tHolocene/ _x09596836 |
|
856 | _uhttps://doi.org/10.1177/0959683618824739 | ||
942 |
_2ddc _cART |
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999 |
_c12817 _d12817 |