ME002
Aquatic Ecosystem Paleoecology for Assessing Biodiversity Shifts under Human Pressures

Session ID#: 257260

Session Description:
Since the onset of significant human activity on Earth—marking the beginning of the Anthropocene— aquatic biodiversity has undergone major structural and compositional shifts due to changes in both terrestrial and aquatic systems. Palaeoecological methods relying on the analysis of biological remains preserved in sediments have enabled the reconstruction of ecological dynamics over centuries, even in heavily disturbed ecosystems.

Sedimentary ancient DNA/RNA analysis, microscopic identification of resting stages and pollen, experimental studies using revived organisms from sediments of different ages, associated with biogeochemical profiling, have provided insights into long-term population and community evolution, from microorganisms to metazoans.

This session aims to highlight recent advances in paleoecology to better understand human-driven changes in aquatic ecosystems. It seeks to evaluate hypotheses related to biodiversity loss, converging community trajectories, regional patterns of invasive species, and long-term phenotypic evolution in response to anthropogenic pressures such as climate change, pollution, urbanization, and ecosystem transformation.

The connectivity between terrestrial, freshwater and marine changes, resilience trajectories, and the impact of restoration and conservation efforts will be discussed. By showcasing the relevance of palaeoecological tools for interpreting historical baselines and ecological trends, this session advocates for their broader application in environmental management and conservation planning.

Co-Sponsor(s):
  • Coastal and Estuarine Biology and Biogeochemistry -
  • Contaminants in the Marine Environment -
  • Human-Ocean Connections -
Index Terms:

1630 Impacts of global change [GLOBAL CHANGE]
4858 Population dynamics and ecology [OCEANOGRAPHY: BIOLOGICAL]
4950 Paleoecology [PALEOCEANOGRAPHY]
6344 System operation and management [POLICY SCIENCES & PUBLIC ISSUES]
Student/Early Career Chair:  Yuan Lin, The University of Tokyo, Graduate School of Agricultural and Life Science, Tokyo, Japan and Laura Epp, University of Konstanz (DE)
Primary Chair:  Raffaele Siano, Ifremer, DYNECO, Plouzané, 29280, France, Plouzané, France and Laura Epp, University of Konstanz (DE)
Co-chairs:  Conny Sjöqvist, Åbo Akademi University, Environmental and Marine biology, Centre for Sustainable Ocean Science (SOS), Turku, Finland, Luisa Orsini, University of Birmingham, Birmingham, United Kingdom and Laura Epp, University of Konstanz (DE)
 
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