CONCLUSION AND OUTLOOK
Conclusion and outlook
This study has allowed to assess the anthropogenic pressures on Posidonia oceanica
meadows along the central Algerian coast, throughout the uses of a total of 5 methods with
different approaches and parameters.
The results show that using visual method based on satellite imagery such as the approach
of Lopez Y Royo et al. (2009), can provide a significant information about the ecological status
of these meadows. The results of this visual approach validated in the present study show that
3 out of 9 stations in the study area were classified as "low pressure" sites. The visual
assessment method provided detailed insights into the specific anthropogenic pressures
affecting the meadows. The results indicated that regions with higher levels of urbanization and
industrial activity exhibited greater ecological degradation.
Furthermore, the study showed that while the quantitative approach of Larid (2002)
provided descriptive insights, the qualitative approach of Lopez et al. (2009) was more
effective in capturing the nuances of human impacts on Posidonia oceanica. This is not
necessarily due to the inefficiency of this quantitative method. Rather, the most probable
explanation is the absence of more relevant and updated data that can adequately reflect the
human impact on these marine ecosystems.
In order to develop a more effective monitoring system for these meadows, it is essential
to identify more relevant indicators that are both readily accessible and capable of accurately
reflecting the current state of the meadow. This will enable the establishment of a rapid and
reliable monitoring tool for predicting the potential degradation of these fragile and important
ecosystems.
Finally, we notice that a part of results obtained in this study was presented in an oral
communication at the university of biology of Constantine (Annex1)
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