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Published on: January 26, 2018
Rise and fall of Caribbean mangroves
1Botanic Institute of Barcelona, Spanish National Research Council (CSIC), Pg. Migdia s/n, 08038 Barcelona, Spain; Catalan Institute of Paleontology Miquel Crusafont, Universitat Autònoma de Barcelona, ICTA-ICP Bld., C. Columnes s/n, 08193 Cerdanyola del Vallès (Barcelona), Spain.
Caribbean mangrove ecosystems, vital for biodiversity and climate mitigation, originated 50 million years ago. Paleoecological studies reveal their evolutionary history and threats from human activity, necessitating urgent conservation efforts.
Area of Science:
- Paleoecology
- Evolutionary Biology
- Ecosystem Science
Background:
- Mangrove forests are critical for coastal biodiversity and blue carbon sequestration.
- These vital ecosystems face significant global threats.
- Understanding past mangrove responses to environmental change is key for conservation.
Purpose of the Study:
- To analyze the paleoecological and evolutionary history of Caribbean mangroves.
- To identify key environmental drivers and human impacts on mangrove ecosystems.
- To inform conservation and restoration strategies for threatened mangrove habitats.
Main Methods:
- Assembly and analysis of the Caribbean Marine and Mangrove paleoecological Archive (CARMA) database.
- Utilized data from over 140 sites spanning the Late Cretaceous to the present.
- Investigated evolutionary turnovers and community diversification events.
Main Results:
- Caribbean mangroves emerged in the Middle Eocene (~50 Ma), with significant evolutionary shaping by the Eocene/Oligocene transition.
- Modern mangrove composition diversified in the Pliocene (~5 Ma), with Pleistocene cycles causing reorganization but not further evolution.
- Human impact, beginning in the Middle Holocene, has accelerated deforestation in recent decades.
Conclusions:
- Paleoecological and evolutionary data provide crucial insights for mangrove conservation.
- Urgent conservation and restoration actions are needed to prevent the loss of these ancient ecosystems.
- The CARMA database offers a foundation for evidence-based management of Caribbean mangroves.
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