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PANGAEA.
Data Publisher for Earth & Environmental Science

Stevenson, Angela; O Corcora, Tadhg; Hukriede, Wolfgang; Schubert, Philipp; Reusch, Thorsten B H: Seagrass blue carbon stocks in the German Baltic Sea [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.947704 (dataset in review)

Abstract:
A total of 169 sediment cores (30 cm length; 5.5 cm inner diameter) were sampled in seagrass meadows (n = 110 cores) and nearby unvegetated sediments (n = 59 cores). Nine cores (with some exceptions) were collected at each site, from three sublocations: (1) in the high-density part of the meadow (“dense seagrass” hereafter), (2) low density or fringe of the meadow (“sparse seagrass” hereafter), and (3) adjacent unvegetated sediments at least 5 m from seagrass (“unvegetated”). Dense and sparse seagrass sublocations are collectively referred to as “seagrass-vegetated” sediments or sublocations. Sediment cores taken within the seagrass meadow were sampled at least 10 m apart from each other. Several biophysical parameters were collected alongside each core, including seawater depth, sediment grain size, current velocity at the seafloor, and seagrass complexity. The measure of “seagrass complexity” was defined as the product of seagrass canopy height and shoot density, to obtain the sum of leaf heights within a unit of area (in m/m2). Cores were collected between 1 and 5 m seawater depth manually via self-contained underwater breathing apparatus (SCUBA) divers pounding impact-resistant PVC tubes into the sediment with a rubber mallet. Sediment total Corg was determined using an Elemental Analyzer (EURO EA Elemental Analyzer).
Keyword(s):
carbon dioxide removal; Climate change; nature-based solutions; organic carbon; sediment core data; Zostera marina
Supplement to:
Stevenson, Angela; O Corcora, Tadhg; Hukriede, Wolfgang; Schubert, P R; Reusch, Thorsten B H (2023): Substantial seagrass blue carbon pools in the southwestern Baltic Sea include relics of terrestrial peatlands. Frontiers in Marine Science, 10, 1266663, https://doi.org/10.3389/fmars.2023.1266663
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0859B: Seastore
Helmholtz Association of German Research Centres (HGF), grant/award no. HI-CAM: Helmholtz-Climate-Initiative
Coverage:
Median Latitude: 54.443508 * Median Longitude: 10.812671 * South-bound Latitude: 53.995140 * West-bound Longitude: 9.519709 * North-bound Latitude: 54.839827 * East-bound Longitude: 13.753084
Date/Time Start: 2019-09-11T00:00:00 * Date/Time End: 2020-11-24T00:00:00
Minimum DEPTH, water: 0.8 m * Maximum DEPTH, water: 4.6 m
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Sample code/labelSample labelStevenson, Angela
2DATE/TIMEDate/TimeStevenson, AngelaGeocode
3LocationLocationStevenson, Angela
4LATITUDELatitudeStevenson, AngelaGeocode
5LONGITUDELongitudeStevenson, AngelaGeocode
6Velocity magnitudeVel magm/sStevenson, Angelaaverage MOV (Maximum Orbital Velocity) by depth
7Velocity magnitudeVel magm/sStevenson, Angelamaximum MOV by depth
8Temperature, waterTemp°CStevenson, Angela
9Vegetation, coverVeg covStevenson, Angela
10DEPTH, waterDepth watermStevenson, AngelaGeocode
11CoreCoreStevenson, Angela
12Core section numberSection#Stevenson, Angelaalways top to bottom, e.g. 1 = uppermost section
13Section positionSectcmStevenson, Angelaheight of section with compression correction factor
14VolumeVolcm3Stevenson, Angela
15MassMassgStevenson, Angelaweight of visible organic carbon in grams per core section
16MassMassgStevenson, Angelaweight of dry sediments in grams, without visible organics
17DensityDensityg/cm3Stevenson, Angela
18Mass per areaMassg/cm2Stevenson, Angeladensity_gcm3 x height_corrected
19Core lengthCore lengthcmStevenson, Angela
20Core lengthCore lengthcmStevenson, Angelaheight of core with compression correction factor; sum of 'height_corrected'
21FractionFrac%Stevenson, Angelafine sediment fraction (<63 um) measured for 5-10 cm layer of core
22CanopyCanopyStevenson, Angelaseagrass canopy height
23Shoot densityShoot den#/m2Stevenson, Angelaseagrass shoots per square meter, using a planting frame 20 x 20 cm in size
24ComplexityComplexityStevenson, Angelaseagrass complexity, vertical meters of seagrass per unit area
25Carbon, organic, particulatePOC%Stevenson, Angela
26Carbon, organic, particulate, proportionPOC propStevenson, Angelaweight (g) of POC per core section
27Carbon, organic, particulate, proportionPOC propStevenson, Angelaweight (g) of POC summed across entire core, 'g_per_cm2' multiplied by '%POC'/100
28Carbon, organic, particulate, proportionPOC propStevenson, Angelagrams POC per m2 integrated to 25 cm sediment depth; standardizing to 25 cm to make values comparable between sites and to other studies
29Carbon, organic, particulate, proportionPOC propStevenson, Angelagrams visible organics per m2 integrated to 25 cm core length; standardizing to 25 cm to make values comparable between sites and to other studies
30Carbon, organic, particulate, proportionPOC propStevenson, Angelaproportion of visible organics to POC (from TOC measurements) for entire core
31Carbon, organic, totalTOCgStevenson, Angelagrams of total organic carbon (POC + visible organics) per section
32Carbon, organic, totalTOCgStevenson, Angelatotal organic carbon per core; all sections 'amt_C_per_sec' summed across entire core to determine total organic carbon across the whole core length
33Carbon, organic, totalTOCgStevenson, Angelaintegrated to 25 cm sediment depth, standardizing to 25 cm to make values comparable between sites and to other studies
34δ15Nδ15N‰Stevenson, Angelad15N stable isotope signatures
35δ13Cδ13C‰ PDBStevenson, Angelad13C stable isotope signatures
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
15974 data points

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