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Stygofaunal community trends along varied rainfall conditions: Deciphering ecological niche dynamics of a shallow calcrete in Western Australia ArchiMer
Saccò, Mattia; Blyth, Alison J.; Humphreys, William F.; Karasiewicz, Stephane; Meredith, Karina T.; Laini, Alex; Cooper, Steven J.b.; Bateman, Philip W.; Grice, Kliti.
Groundwaters host highly adapted fauna, known as stygofauna, which play a key role in maintaining the functional integrity of subterranean ecosystems. Stygofaunal niche studies provide insights into the ecological dynamics shaping the delicate balance between the hydrological conditions and community diversity patterns. This work aims to unravel the ecological trends of a calcrete stygofaunal community, with special focus on niche dynamics through the Outlying Mean Index analysis (OMI) and additional calculation of Within Outlying Mean Indexes (WitOMI), under three rainfall regimes. Temperature and pH changed significantly among different rainfall conditions (P < .001), and together with salinity were the most influential drivers in shaping stygofaunal...
Tipo: Text Palavras-chave: Stygofauna; Ecological niche; Groundwater; Calcrete; Rainfall; WitOMI.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00599/71110/69806.pdf
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Micromorphology of Paleosols of the Marília Formation and their Significance in the Paleoenvironmental Evolution of the Bauru Basin, Upper Cretaceous, Southeastern Brazil Rev. Bras. Ciênc. Solo
Silva,Márcio Luiz da; Batezelli,Alessandro; Ladeira,Francisco Sérgio Bernardes.
ABSTRACT Deduction of associated paleoenvironments and paleoclimate, definition of the chronosequence of paleosols, and paleogeographic reconstruction have become possible through the application of micromorphology in paleopedology. Micromorphology has also been useful in recognition of weathering processes and definition of minerals formed in succession. In this respect, the objective of this study was to identify the development of pedogenic processes and discuss their significance in the paleoclimate evolution of the Marília Formation (Maastrichtian) of Bauru Basin. Three sections of the Marília Formation (A1, A2, and A3) were described, comprising nine profiles. Micromorphologic al analysis was carried out according to the specialized literature. In...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcrete; C/f-related distribution; B-fabric; Pedofeatures; Paleoclimate.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100304
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