Phosphorus Budget of the Sundarban Mangrove Ecosystem: Box Model Approach
| Autor: | Chumki Chowdhury, Sudip Kumar Das, Tapan Kumar Jana, Raghab Ray, Natasha Majumder |
|---|---|
| Přispěvatelé: | University of Calcutta, Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Box model
010504 meteorology & atmospheric sciences chemistry.chemical_element 010501 environmental sciences Aquatic Science 01 natural sciences Mineralization (biology) Organic matter 14. Life underwater Biomass Mangrove Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Hydrology chemistry.chemical_classification [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Ecology Phosphorus ACL Sediment 15. Life on land P budget chemistry Productivity (ecology) Sundarban Environmental science [SDE.BE]Environmental Sciences/Biodiversity and Ecology Cycling Litter fall |
| Zdroj: | Estuaries and Coasts Estuaries and Coasts, Springer Verlag, 2018, 41 (4), pp.1036-1049. ⟨10.1007/s12237-017-0332-0⟩ |
| ISSN: | 1559-2723 |
| DOI: | 10.1007/s12237-017-0332-0⟩ |
| Popis: | WOS:000430990300009; International audience; Phosphorus (P) cycling in mangroves plays an important role in productivity but the magnitude of atmospheric input in the mangrove P budget is still uncertain. This study applied a box model approach to assess P budget in the Indian Sundarban, the world’s largest mangrove ecosystem for conceptual understanding of P cycling and for better representation of transport and transformation of P within the mangrove ecosystem. The P content in the sediment (0.19–0.67 μg g−1) was found much below its maximum retention capacity (322 μg g−1) and was lower than the mean marine sediment (669 μg g−1). The C:N and C:P ratios were correlated (r2 = 0.66, P \textless 0.01) and the major fraction of available P was recycled within the organic structure of mangrove ecosystem, thus maintaining productivity through conservation strategies. Atmospheric input accounted for 56.7% of total P input (16.06 Gg year−1) and 50% of total P output (14.7 Gg year−1) was attributed to plant uptake. Budget closing or unaccounted P (1.36 Gg) was only 8.5% of the total input. Two feedback pathways, i.e., input of P from dust fallout and biochemical mineralization of organic matter, significantly affected P availability. The findings of the study suggest that atmospheric deposition is of major importance as a natural and/or anthropogenic forcing function in the Sundarban mangrove system. |
| Databáze: | OpenAIRE |
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