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Inorganic and black carbon hotspots constrain blue carbon mitigation services across tropical seagrass and temperate tidal marshes [supplementary info]

Total organic carbon (TOC) sediment stocks as a CO2 mitigation service require exclusion of allochthonous black (BC) and particulate inorganic carbon corrected for water–atmospheric equilibrium (PICeq). For the first time, we address this bias for a temperate salt marsh and a coastal tropical seagrass in BC hotspots that represent two different blue carbon ecosystems of Malaysia and Australia. Seagrass TOC stocks were similar to the salt marshes with soil depths < 1 m (59.3 ± 11.3 and 74.9 ± 18.9 MgC ha-1, CI 95% respectively). Both ecosystems showed larger BC constraints than their pristine counterparts did. However, the seagrass meadows’ mitigation services were largely constrained by both higher BC/TOC and PICeq/TOC fractions (38.0% ± 6.6% and 43.4% ± 5.9%, CI 95%) and salt marshes around a third (22% ± 10.2% and 6.0% ± 3.1% CI 95%). The results provide useful data from underrepresented regions, and, reiterates the need to consider both BC and PIC for more reliable blue carbon mitigation assessments.

Simple

Identification info

Date (Creation)
2021-02-18

Principal investigator

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Gallagher, John Barry
IMAS - Hobart
Private Bag 129
Hobart
Tasmania
7001
Australia
+61476521330
ORCID ID >

Collaborator

Geography, Planning, and Spatial Sciences, University of Tasmania (UTAS) - Prahalad, Vishnu
ORCID ID >

Collaborator

Geography, Planning, and Spatial Sciences, University of Tasmania (UTAS) - Aalders, John
ORCID ID >

Credit
Living Wetlands
Status
Completed

Principal investigator

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Gallagher, John Barry
IMAS - Hobart
Private Bag 129
Hobart
Tasmania
7001
Australia
+61476521330
ORCID ID >

Topic category
  • Biota
  • Climatology, meteorology, atmosphere
  • Geoscientific information

Extent

N
S
E
W


N
S
E
W


Temporal extent

Time period
2018-09-01 2019-10-01
Maintenance and update frequency
Not planned
Keywords (Theme)
  • blue carbon
  • salt marsh
  • seagrass
  • Tasmania
  • Malaysia
NASA/GCMD Keywords, Version 8.5
  • EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | CARBONATE
  • EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | ORGANIC CARBON
  • EARTH SCIENCE | CLIMATE INDICATORS | PALEOCLIMATE INDICATORS | LAND RECORDS | FIRE HISTORY | CHARCOAL SEDIMENT
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
  • Marine Geoscience
  • Carbon Sequestration Science
  • Phycology (incl. Marine Grasses)

Resource constraints

Classification
Unclassified

Resource constraints

Use limitation
The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.

Resource constraints

Linkage
http://i.creativecommons.org/l/by/4.0/88x31.png

License Graphic

Title
Creative Commons Attribution 4.0 International License


>

Website
http://creativecommons.org/licenses/by/4.0/

License Text

Other constraints
The citation in a list of references is: Gallagher, J.B., Prahalad, V. & Allders, J. (2021). Inorganic and black carbon hotspots constrain blue carbon mitigation services across tropical seagrass and temperate tidal marshes [supplementary info]. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). Data accessed at https://metadata.imas.utas.edu.au/geonetwork/srv/en/metadata.show?uuid=b42a720e-044e-4be4-ad2d-13d5799c1269 on [access date]
Language
English
Character encoding
UTF8

Distribution Information

Distribution format
  • PDF

OnLine resource
DATA ACCESS - supplementary tables S1 & S2 - Penang and Tasmania sediment variables and locations [direct download]

Resource lineage

Statement
Collecting sediments cores using a "Russian" peat corer. Analysis of carbon and black carbon using loss on ignition with local calibrations sets and directly through a element CHNS analyser (UTAS Central Science labs) and its stable isotopes, carbonate using loss on ignition, dry bulk density immediately extracting wet volumes and drying corrected for salt content (for details see the publication of the title of this data set)
Hierarchy level
Dataset

Metadata

Metadata identifier
b42a720e-044e-4be4-ad2d-13d5799c1269

Language
English
Character encoding
UTF8

Point of contact

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - IMAS Data Manager ()

Type of resource

Resource scope
Dataset
Metadata linkage
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/b42a720e-044e-4be4-ad2d-13d5799c1269

Point of truth URL of this metadata record

Date info (Creation)
2021-02-18T16:51:15
Date info (Revision)
2021-02-18T16:51:15

Metadata standard

Title
ISO 19115-3:2018
 
 

Overviews

Spatial extent

N
S
E
W


N
S
E
W


Keywords

Malaysia Tasmania blue carbon salt marsh seagrass
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
Carbon Sequestration Science Marine Geoscience Phycology (incl. Marine Grasses)
NASA/GCMD Keywords, Version 8.5
EARTH SCIENCE | CLIMATE INDICATORS | PALEOCLIMATE INDICATORS | LAND RECORDS | FIRE HISTORY | CHARCOAL SEDIMENT EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | CARBONATE EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | ORGANIC CARBON

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Associated resources

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