2026-10-06T06:19:06Z https://api.figshare.com/v2/oai

oai:figshare.com:article/32153832 2026-09-29T06:33:50Z category_26932 category_26935 category_26941 item_type_3 month_year_09_2026

Supplementary data for manuscript: Shifting baselines: How coastal settings shape nitrogen removal benefits in mangrove ecosystems Ziyan WANG (22497905) Conservation and biodiversity Environmental assessment and monitoring Environmental management mangrove denitrification anammox DNRA <p dir="ltr"><a href="" target="_blank">Nitrogen (N) pollution is a global threat to the health of aquatic ecosystems. While mangroves are recognized as efficient filters of reactive N, their N-removal service may vary across coastal geomorphic settings. However, whether N cycling-baselines differ between contrasting estuarine and open-coast mangrove settings remain poorly understood. To address this, we quantified rates of denitrification, anaerobic ammonium oxidation (anammox), and dissimilatory nitrate reduction to ammonium (DNRA) </a><a href="" target="_blank">in both mangrove forests and adjacent bare flats across the two settings. </a>Actual N-removal rates (denitrification + anammox) were 18-fold higher in the estuarine setting, where elevated external nitrate, muddy organic-rich sediments, and compressed oxygen penetration depths drove the anaerobic N loss. In contrast, DNRA dominated nitrate reduction in the open-coast setting, fueled by high dissolved organic carbon (DOC) to extractable nitrate ratios. <a href="" target="_blank">Mangrove effects on N cycling also differed between settings: mangrove presence suppressed DNRA in the estuarine setting, but enhanced N-removal potential in the open-coast setting by elevating DOC and reducing oxygen penetration depth. </a>Extending these findings with a global synthesis, we show that mangrove forests could reduce functional differences in sediment N cycling between contrasting sedimentary settings. Together, our results suggest that coastal geomorphic setting is an important driver of N-transformation pathways and N-removal benefits, highlighting the need to account for shoreline heterogeneity in coastal biogeochemical assessments.</p> 2026-09-29T06:33:50Z Dataset Dataset 10.6084/m9.figshare.32153832.v4 https://figshare.com/articles/dataset/Supplementary_data_for_manuscript_Shifting_baselines_How_coastal_settings_shape_Blue_Nitrogen_benefits_in_wetlands/32153832 CC BY 4.0