71 research outputs found
Conservation paleobiology as a tool to define reference conditions in naturally stressed transitional settings: Micropaleontological insights from the holocene of the po coastal plain (italy)
The key role of paralic environments as providers of ecosystem services, associated with their increasingly threatened state, led to the definition of international water management policies aimed to improve ecological quality status (EcoQs). Restoration actions rely on the definition of reference conditions, which is a particularly challenging task in naturally stressed transitional environments. In the present work, we apply the diversity index Exp(H\u2019bc ) on benthic foraminifer assemblages from two anthropogenically unimpacted transitional to coastal Holocene sediment successions of the Po coastal plain, in order to assess past EcoQs (PaleoEcoQs). Ostracod ecological groups provided detailed insights on naturally stressful paleoenvironmental conditions. We show that \u201cpoor\u201d to \u201cmoderate\u201d PaleoEcoQs are recorded by biological indicators at reference conditions under fluctuations of chemical-physical parameters and organic matter enrichment. We emphasize the importance of a site-specific paleobiological approach, as significant differences in diversity occur even on a short spatial scale. This study illustrates that early to mid-Holocene sediment successions resulted to be appropriate for conservation paleobiological purposes, providing a high-resolution paleoecological record under the influence of the Holocene sea-level rise in analogy with the present-day global change
Benthic ostracoda and foraminifera from the North Adriatic Sea (Italy, Mediterranean Sea): A proxy for the depositional characterisation of river-influenced shelves
We investigated the distribution of ostracoda and benthic foraminifera from the shallow ( 20 m), diversified meiofaunal assemblages occur with ostracoda discriminating sediment-starved areas enriched in sand. Our results demonstrate that the combined use of ostracoda and benthic foraminifera represents a powerful tool for the depositional characterisation of river-influenced shelves and to achieve detailed palaeogeographical reconstructions from shallow marine successions
Miliolidae (benthic foraminifera) distribution and sea-level variation during the Holocene transgression in subsurface deposits of the Po River delta (Italy)
I microfossili dei calanchi nelle Argille Azzurre della Romagna occidentale: una chiave per lo studio degli ambienti e del clima del passato
Biostratigrafia. In: Carta Geologica D'Italia - Foglio 256, Rimini della carta 1:50.000 dell'I.G.M.
Benthic foraminiferal evidence of sediment supply changes and fluvial drainage reorganization in Holocene deposits of the Po Delta, Italy
Biostratigrafia. In: Allegato al Foglio 256 Rimini della Carta Geologica D'Italia - Geologia di sottosuolo
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