Increasing nutrient inputs risk a surge of nitrous oxide emissions from global mangrove ecosystems

Feng Mao; Sami Ullah; Steven M. Gorelick; David M. Hannah; Stefan Krause

doi:10.1016/j.oneear.2021.04.007

Increasing nutrient inputs risk a surge of nitrous oxide emissions from global mangrove ecosystems

Feng Mao^*, Sami Ullah, Steven M. Gorelick, David M. Hannah, Stefan Krause

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We document a substantial increase in global N₂O emissions from mangroves. Based on our analysis of two decades of mangrove N₂O emission studies, we estimate N₂O emission of 0.023 Tg N year⁻¹ from global mangrove ecosystems. N₂O fluxes from mangrove ecosystems are strongly increased by sediment dissolved inorganic nitrogen (DIN) concentration transported from river catchments to coastal waters. Continuing growth of nutrient inputs from anthropogenic sources, i.e., agricultural intensification, excessive fertilizer use and waste water discharge, will appreciably increase DIN loading and consequently global N₂O emission from mangroves. Based on the Millennium Ecosystem Assessment scenarios of riverine DIN inputs into mangrove ecosystems coupled with our estimates of DIN-controlled emissions rates, we expect N₂O emission to increase by 20%–51% by 2030 and 27%–74% by 2050 compared with estimated emissions in the year 2000. These forecasts underline the urgency of improvements in catchment-scale nitrogen management strategies.

Original language	English
Pages (from-to)	742-748
Number of pages	7
Journal	One Earth
Volume	4
Issue number	5
Early online date	11 May 2021
DOIs	https://doi.org/10.1016/j.oneear.2021.04.007
Publication status	Published - 21 May 2021

Bibliographical note

Funding Information:
We acknowledge the support from the European Union's Horizon 2020 Research and Innovation Program under the Marie Sk?odowska-Curie grant agreement no. 734317 (HiFreq), the University of Birmingham's Institute for Global Innovation, and Cardiff University's Darlithwyr Disglair Program. S.M.G. was supported by the US National Science Foundation under grant ICER/EAR-1829999 to Stanford University. Any opinions, findings, and conclusions or recommendations expressed in this material do not necessarily reflect the views of the funding organizations. We also thank Chantal Jackson for her support in producing the figures and thank Sybil Seitzinger and Emilio Mayorga for providing the NEWS 2 data. Conceptualization, F.M. S.K. and S.U.; methodology, F.M. S.K. and S.U.; writing ? original draft, F.M. S.K. and S.U.; writing ? review & editing, F.M. S.K. S.U. D.M.H. and S.M.G.; formal analysis, F.M.; visualization, F.M. The authors declare no competing interests.

Publisher Copyright:
© 2021 Elsevier Inc.

Keywords

climate change
emissions
greenhouse gas
mangroves
nitrous oxide
nutrients
river catchments

ASJC Scopus subject areas

General Environmental Science
Earth and Planetary Sciences (miscellaneous)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.oneear.2021.04.007Licence: None: All rights reserved

Cite this

@article{3f57df207c0a44bc8bc274b3353405ae,

title = "Increasing nutrient inputs risk a surge of nitrous oxide emissions from global mangrove ecosystems",

abstract = "We document a substantial increase in global N2O emissions from mangroves. Based on our analysis of two decades of mangrove N2O emission studies, we estimate N2O emission of 0.023 Tg N year−1 from global mangrove ecosystems. N2O fluxes from mangrove ecosystems are strongly increased by sediment dissolved inorganic nitrogen (DIN) concentration transported from river catchments to coastal waters. Continuing growth of nutrient inputs from anthropogenic sources, i.e., agricultural intensification, excessive fertilizer use and waste water discharge, will appreciably increase DIN loading and consequently global N2O emission from mangroves. Based on the Millennium Ecosystem Assessment scenarios of riverine DIN inputs into mangrove ecosystems coupled with our estimates of DIN-controlled emissions rates, we expect N2O emission to increase by 20%–51% by 2030 and 27%–74% by 2050 compared with estimated emissions in the year 2000. These forecasts underline the urgency of improvements in catchment-scale nitrogen management strategies.",

keywords = "climate change, emissions, greenhouse gas, mangroves, nitrous oxide, nutrients, river catchments",

author = "Feng Mao and Sami Ullah and Gorelick, {Steven M.} and Hannah, {David M.} and Stefan Krause",

note = "Funding Information: We acknowledge the support from the European Union's Horizon 2020 Research and Innovation Program under the Marie Sk?odowska-Curie grant agreement no. 734317 (HiFreq), the University of Birmingham's Institute for Global Innovation, and Cardiff University's Darlithwyr Disglair Program. S.M.G. was supported by the US National Science Foundation under grant ICER/EAR-1829999 to Stanford University. Any opinions, findings, and conclusions or recommendations expressed in this material do not necessarily reflect the views of the funding organizations. We also thank Chantal Jackson for her support in producing the figures and thank Sybil Seitzinger and Emilio Mayorga for providing the NEWS 2 data. Conceptualization, F.M. S.K. and S.U.; methodology, F.M. S.K. and S.U.; writing ? original draft, F.M. S.K. and S.U.; writing ? review & editing, F.M. S.K. S.U. D.M.H. and S.M.G.; formal analysis, F.M.; visualization, F.M. The authors declare no competing interests. Publisher Copyright: {\textcopyright} 2021 Elsevier Inc.",

year = "2021",

month = may,

day = "21",

doi = "10.1016/j.oneear.2021.04.007",

language = "English",

volume = "4",

pages = "742--748",

journal = "One Earth",

issn = "2590-3330",

publisher = "Cell Press",

number = "5",

}

TY - JOUR

T1 - Increasing nutrient inputs risk a surge of nitrous oxide emissions from global mangrove ecosystems

AU - Mao, Feng

AU - Ullah, Sami

AU - Gorelick, Steven M.

AU - Hannah, David M.

AU - Krause, Stefan

N1 - Funding Information: We acknowledge the support from the European Union's Horizon 2020 Research and Innovation Program under the Marie Sk?odowska-Curie grant agreement no. 734317 (HiFreq), the University of Birmingham's Institute for Global Innovation, and Cardiff University's Darlithwyr Disglair Program. S.M.G. was supported by the US National Science Foundation under grant ICER/EAR-1829999 to Stanford University. Any opinions, findings, and conclusions or recommendations expressed in this material do not necessarily reflect the views of the funding organizations. We also thank Chantal Jackson for her support in producing the figures and thank Sybil Seitzinger and Emilio Mayorga for providing the NEWS 2 data. Conceptualization, F.M. S.K. and S.U.; methodology, F.M. S.K. and S.U.; writing ? original draft, F.M. S.K. and S.U.; writing ? review & editing, F.M. S.K. S.U. D.M.H. and S.M.G.; formal analysis, F.M.; visualization, F.M. The authors declare no competing interests. Publisher Copyright: © 2021 Elsevier Inc.

PY - 2021/5/21

Y1 - 2021/5/21

N2 - We document a substantial increase in global N2O emissions from mangroves. Based on our analysis of two decades of mangrove N2O emission studies, we estimate N2O emission of 0.023 Tg N year−1 from global mangrove ecosystems. N2O fluxes from mangrove ecosystems are strongly increased by sediment dissolved inorganic nitrogen (DIN) concentration transported from river catchments to coastal waters. Continuing growth of nutrient inputs from anthropogenic sources, i.e., agricultural intensification, excessive fertilizer use and waste water discharge, will appreciably increase DIN loading and consequently global N2O emission from mangroves. Based on the Millennium Ecosystem Assessment scenarios of riverine DIN inputs into mangrove ecosystems coupled with our estimates of DIN-controlled emissions rates, we expect N2O emission to increase by 20%–51% by 2030 and 27%–74% by 2050 compared with estimated emissions in the year 2000. These forecasts underline the urgency of improvements in catchment-scale nitrogen management strategies.

AB - We document a substantial increase in global N2O emissions from mangroves. Based on our analysis of two decades of mangrove N2O emission studies, we estimate N2O emission of 0.023 Tg N year−1 from global mangrove ecosystems. N2O fluxes from mangrove ecosystems are strongly increased by sediment dissolved inorganic nitrogen (DIN) concentration transported from river catchments to coastal waters. Continuing growth of nutrient inputs from anthropogenic sources, i.e., agricultural intensification, excessive fertilizer use and waste water discharge, will appreciably increase DIN loading and consequently global N2O emission from mangroves. Based on the Millennium Ecosystem Assessment scenarios of riverine DIN inputs into mangrove ecosystems coupled with our estimates of DIN-controlled emissions rates, we expect N2O emission to increase by 20%–51% by 2030 and 27%–74% by 2050 compared with estimated emissions in the year 2000. These forecasts underline the urgency of improvements in catchment-scale nitrogen management strategies.

KW - climate change

KW - emissions

KW - greenhouse gas

KW - mangroves

KW - nitrous oxide

KW - nutrients

KW - river catchments

UR - http://www.scopus.com/inward/record.url?scp=85106247339&partnerID=8YFLogxK

U2 - 10.1016/j.oneear.2021.04.007

DO - 10.1016/j.oneear.2021.04.007

M3 - Article

AN - SCOPUS:85106247339

SN - 2590-3330

VL - 4

SP - 742

EP - 748

JO - One Earth

JF - One Earth

IS - 5

ER -

Increasing nutrient inputs risk a surge of nitrous oxide emissions from global mangrove ecosystems

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Fingerprint

Cite this