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Anthropogenic and environmental influences on nutrient accumulation in mangrove sediments
Journal article   Peer reviewed

Anthropogenic and environmental influences on nutrient accumulation in mangrove sediments

Alexander Pérez, Wilson Machado and Christian J Sanders
Marine Pollution Bulletin, Vol.165, pp.112174-112174
20/02/2021
PMID: 33621900
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Anthropogenic and environmental influences on nutrient accumulation in mangrove sedimentsView
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Abstract

Deforestation Mangrove forests Storms and floodings Nutrient accumulation Sediment accretion Eutrophication
Here we provide a global review on nutrient accumulation rates in mangroves which were derived from sixty-nine dated sediment cores, addressing environmental and anthropogenic influences. Conserved mangroves presented nitrogen and phosphorous accumulation rates near to 5.8 ± 2.1 and 0.8 ± 0.5 g m  yr , respectively. These values were significantly lower than those observed for mangroves impacted by coastal eutrophication, which were found to bury 21.5 ± 8.6 and 17.9 ± 2.4 g m-2 yr , of nitrogen and phosphorous respectively. Moreover, higher nutrient accumulation rates were found in mixed mangroves as compared to monospecific forests, and higher values were noted within vegetated areas as compared to mudflats. For South America and Asia, mangroves impacted by anthropogenic activities may result in up to seventeen-fold higher nitrogen and phosphorous accumulation rates in comparison with values under conserved conditions. For Oceania, these differences may be up to fivefold higher in impacted as compared to the conserved ecosystems in this region.

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