Read the passage below carefully:
In the Niger Delta's mangrove ecosystems, community-led reforestation initiatives using Rhizophora racemosa have primarily aimed to mitigate coastal shoreline retreat caused by rising sea levels and storm surges. While recent marine biology assessments highlight that these restored mangrove stands effectively sequester up to four times more blue carbon per hectare than tropical rainforests, this significant carbon storage capacity remains an auxiliary benefit rather than the foundational objective driving local conservation policies. Instead, coastal engineering metrics confirm that the dense, prop-root networks of Rhizophora racemosa absorb wave energy and stabilize intertidal sediments, directly preventing the structural erosion of vulnerable littoral settlements. Consequently, evaluating the success of these community projects solely by their carbon market valuation misinterprets their essential purpose, which is immediate shoreline defense and community protection.
Statement: The central thesis of the passage is that the exceptionally high blue carbon sequestration rate of Rhizophora racemosa mangroves constitutes the primary justification for community-led reforestation in the Niger Delta.
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