Status of Seaweeds Community in the Mangrove Forest and Sandy Shore Ecosystems, Red Sea, Egypt | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 47, Volume 26, Issue 2, March and April 2022, Page 567-585 PDF (784.91 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2022.234917 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Mohamed Talaat et al. | ||||
| Abstract | ||||
| The current study was organized to determine the abundance and distribution status of the seaweed community in two Red Sea locations in order to assist decision-makers in managing natural resources, particularly the macroalgal community. During summer, autumn of 2017, and winter, spring of 2018, seaweed species were collected seasonally by snorkeling in the intertidal zone at two sites: a mangrove forest 17 km south of Safaga City and Sandy shore at the National Institute of Oceanography and Fisheries, Hurghada branch. The community structure of the seaweed meadows at the two sites was described using the line transects method (LTM, 25m length) and the quadrate technique (1m2). The two sites were sampled for common macroalgae species in this study. Ten macroalgae species were identified in the mangrove site, including three Chlorophyta species (Caulerpa racemosa, Halimeda opuntia and Halimeda macroloba), five Phaeophyta species (Padina boergesenii, Sargassum aquifolium, Hormophysa cuneiforms, Turbinaria turbinate and Caulerpa racemosa) and Rhodophyta with two species (Digenea simplex and Actinotrichia fragilis). Seven macroalgae species were identified at the NIOF site, including two Chlorophyta species (Caulerpa racemosa and Halimeda macroloba), four Phaeophyta species (Padina boergesenii, Hormophysa cuneiforms, Sargassum aquifolium and Caulerpa racemosa), and one Rhodophyta species (Digenea simplex). In all seasons and locations, the brown seaweed Caulerpa racemosa showed the highest biomass, averaging 1213 gm/m2. Followed by the green sp., Halimeda opuntia, which recorded a fresh weight of 1083 gm/m2. Finally, the current study shed highlights on the importance of nutrients, particularly phosphorus, in enhancing seaweed communities in two study sites. | ||||
| Keywords | ||||
| Macroalgae; Biomass; Distribution; Mangrove; Red Sea; Egypt | ||||
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