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Benthic mollusc communities across space and through time in a hypersaline coastal lagoon, Mexico
Suárez-Mozo, N.Y.; Brenner, M.; Kenney, W.F.; Díaz-Asencio, M.; Curtis, J.H.; Aquino-López, M.A.; Guerra-Castro, E.; Simões, N. (2023). Benthic mollusc communities across space and through time in a hypersaline coastal lagoon, Mexico. Est., Coast. and Shelf Sci. 290: 108413. https://dx.doi.org/10.1016/j.ecss.2023.108413
In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015, meer
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| Trefwoorden |
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| Author keywords |
Paleoecology; 210Pb dating; Río lagartos; Sediment; Yucatan |
| Auteurs | | Top |
- Suárez-Mozo, N.Y.
- Brenner, M.
- Kenney, W.F.
- Díaz-Asencio, M.
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- Curtis, J.H.
- Aquino-López, M.A.
- Guerra-Castro, E.
- Simões, N.
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| Abstract |
The coast of the Yucatan Peninsula (Mexico) has undergone numerous changes over the last century as a result of population growth, shifts in land use, establishment of industries, and storm impacts. To understand how the mollusc fauna responded to these changes over time, paleoecological studies were conducted to compare historical and modern data, and to reveal information on past environmental conditions. We analyzed mollusc assemblages in sediment cores from Río Lagartos coastal lagoon, which span the last ∼70 years. Mollusc assemblages in the sediment cores were compared to a modern inventory of Mollusca fauna, which was compiled to assess species distributions associated with multiple environmental variables. Mollusc assemblages from the sediment cores (17,089 specimens), which represent 19 bivalve and 43 gastropod species, and modern inventory datasets possess the same ubiquitous species and the same feeding guilds, i.e., groups that exploit the same food resources. Nearly twice as many species were identified in the sediment cores as in the modern inventory. This finding probably reflects the fact that the mollusc community changed through time at the core sites in response to shifting environmental conditions. Nevertheless, we encountered a number of taxa in the modern survey samples, which were absent from the sediment cores. This was probably a consequence of the limited spatial coverage of the cores and small diameter of the core barrels, which precluded sampling of large taxa. We report differences in mollusc abundance and taxonomic composition in the cores across space and time, which may be related to salinity changes in the lagoon and modifications of the nearby terrestrial environment. |
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