ARPHA Preprints, doi: 10.3897/arphapreprints.e131504
Spatiotemporal variation of seagrass meadow and associated bivalves in Mediterranean lagoon (El Mellah -Algeria)
expand article infoAicha Beya Mammeria‡, Rutger De Wit§, Aicha Beya Mammeria|
‡ Laboratory of Applied Neuroendocrinology, Department of Biology, Faculty of Sciences, Badji Mokhtar University, Annaba, Algeria§ Centre for Marine Biodiversity, Exploitation and Conservation (MARBEC), Université de Montpellier, CNRS, IRD, Ifremer, INRAE, Place Eugène Bataillon, Université de Montpellier, F-34095 Montpellier Cedex 5, Montpellier, France| Department of Natural Sciences and Life, Faculty of Sciences. Benyoucef Benkhedda University of Algiers 1, Algiers, Algeria

Corresponding author: Aicha Beya Mammeria ( ab.mammeria@gmail.com )

© Aicha Beya Mammeria, Rutger De Wit, Aicha Beya Mammeria.
This is an open access preprint distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Mammeria AB, De Wit R, Mammeria AB (2024) Spatiotemporal variation of seagrass meadow and associated bivalves in Mediterranean lagoon (El Mellah -Algeria). ARPHA Preprints. https://doi.org/10.3897/arphapreprints.e131504
Open Access
Abstract

This paper presents spatio-temporal variations of angiosperms, bivalves associated with them, to the environmental and conditions of the El Mellah lagoon in 2019 under continental and marine influences. Our results showed significant changes in their distribution, which appear to be linked to fluctuations in the environmental conditions and climatic change, between Zostera noltei and Ruppia maritima, while the seagrass beds are remarkably abundant, with a biomass that can reach 1313.32 ± 132.73 g DW.m -2 during the summer period. we have identified macrofauna made up of five species of bivalves: Cerastoderma glaucum, Abra ovata, Ruditapes decussatus, Loripes orbiculatus, and Arcuatula senhousia. Our results also highlight for the first time, an invasive species A. senhousia, the species dominates the bivalve community. and two threatened edible species in this area, R. decussatus and C. glaucum, probably due to the climat change, the reduced distribution of the Ruppa maritima meadow and silting of the channel.

Keywords
Coastal lagoon, Angiosperm, Zostera noltei, Ruppia maritima, bivalves, invasive species, climate change