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Article

Living Benthic Foraminifera from the Surface and Subsurface Sediment Layers Applied to the Environmental Characterization of the Brazilian Continental Slope (SW Atlantic)

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Laboratório de Foraminíferos e Micropaleontologia Ambiental, Universidade Federal do Paraná, Avenida Coronel Francisco Heráclito dos Santos 100, Curitiba, Paraná 81530-000, Brazil
2
Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET, Avenida Angel Gallardo 470, Buenos Aires C1405DJR, Argentina
3
Centro de Ciências Biológicas e da Saúde Rua Universitária, Universidade Estadual do Oeste do Paraná, Cascavel, Paraná 85819-110, Brazil
*
Author to whom correspondence should be addressed.
Academic Editors: Vincent Bouchet, Fabrizio Frontalini and Daniela Zeppilli
Water 2021, 13(13), 1863; https://doi.org/10.3390/w13131863
Received: 25 May 2021 / Revised: 23 June 2021 / Accepted: 25 June 2021 / Published: 3 July 2021
Living benthic foraminifera (>63 µm) were studied to characterize the continental slope of the Potiguar Basin (SW Atlantic). Foraminifers from the surface (0–2 cm), subsurface (2–5 cm), and integrated (0–5 cm) sediment layers were analyzed to verify their contribution to environmental characterization. It was also estimated if and which changes occur when the subsurface is added. Sampling stations were distributed in five transects in four isobaths (150, 400, 1000, and 2000 m). Sediment samples were fixed with 4% buffered formaldehyde and stained with Bengal rose. Were recorded 396 species in the surface layer, 228 in the subsurface, and 449 in integrating both layers. This study did not include tubular agglutinated species. The assemblages from 150 m isobath indicated the upper slope, from 400 m indicated the middle slope and the ones from the 2000 m indicated the lower slope. The surface layer’s assemblage at 1000 m isobath was more similar to the middle slope; in contrast, its subsurface layer’s assemblage had more similarity with the lower slope. Rarefaction curves, Permanova, and NMDS routines indicated a high resemblance between surface and integrated layers. Therefore, the first two centimeters were sufficient to characterize this region based on living benthic foraminifera. View Full-Text
Keywords: living benthic foraminifera; environmental characterization; vertical stratification; continental slope; Potiguar Basin; Rio Grande do Norte living benthic foraminifera; environmental characterization; vertical stratification; continental slope; Potiguar Basin; Rio Grande do Norte
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MDPI and ACS Style

Santa-Rosa, L.C.d.C.; Disaró, S.T.; Totah, V.; Watanabe, S.; Guimarães, A.T.B. Living Benthic Foraminifera from the Surface and Subsurface Sediment Layers Applied to the Environmental Characterization of the Brazilian Continental Slope (SW Atlantic). Water 2021, 13, 1863. https://doi.org/10.3390/w13131863

AMA Style

Santa-Rosa LCdC, Disaró ST, Totah V, Watanabe S, Guimarães ATB. Living Benthic Foraminifera from the Surface and Subsurface Sediment Layers Applied to the Environmental Characterization of the Brazilian Continental Slope (SW Atlantic). Water. 2021; 13(13):1863. https://doi.org/10.3390/w13131863

Chicago/Turabian Style

Santa-Rosa, Luciana C.d.C., Sibelle T. Disaró, Violeta Totah, Silvia Watanabe, and Ana T.B. Guimarães 2021. "Living Benthic Foraminifera from the Surface and Subsurface Sediment Layers Applied to the Environmental Characterization of the Brazilian Continental Slope (SW Atlantic)" Water 13, no. 13: 1863. https://doi.org/10.3390/w13131863

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