Seasonal macrophyte data on traits, carbohydrates and CN content from the Tvärminne archipelago, Finland, 2021 and 2022

Roel Lammerant, Eva Karin Rohlfer, Camilla Gustafsson, Alf Norkko

The dataset is based on a seasonal field survey, consisting of four sampling campaigns (October 2021, March 2022, June 2022 and August 2022) of destructively harvesting macrophyte material in the Tvärminne archipelago, Finland.

The dataset contains species composition, biomass, and trait data (morphological and biochemical). In addition, non-structural carbohydrate data was measured for plants in soft-sediment habitats. The macrophytes were collected at a water depth of 1.8 to ⁠3.0 m in both soft sediment and hard-bottom habitats.

The data were collected in order to assess seasonal dynamics of macrophyte community composition and biomass-bound carbon stocks.

MarineBenthic ecologyBenthic ecologyMarine biodiversityAquatic plantsMacroalgaeTraitsCarbon stocksNon-structural carbohydratesCoastClimSeasonal campaign 2021-2022

Name

Version

Citation

References

Lammerant R, Rohlfer EK, Norkko A, Gustafsson C (2024a) Seasonality strongly affects short‐term C‐storage in coastal macrophyte communities. Limnology and Oceanography 69:700–711. https://doi.org/10.1002/lno.12524

Lammerant R, Norkko A, Gustafsson C (2024b) A functional perspective on the factors underpinning biomass-bound carbon stocks in coastal macrophyte communities. Marine Environmental Research 193:106289. https://doi.org/10.1016/j.marenvres.2023.106289

Data description

This dataset is used in publications by Lammerant et al. (2024a) and Lammerant et al. (2024b).

The data are provided in six xlsx spreadsheet files. For each data file, there is a corresponding readme txt file with specific explanations. There is also a readme file with overview information.

Data files

• all-carbohydrates.xlsx Soluble sugars and starch in leaf and rhizome tissues at the four sampling occasions.
• C-N-seasonal.xlsx Particulate carbon and nitrogen in rhizomes, roots and leaves at the four sampling occasions.
• coastclim-dataset-10-21.xlsx Macrophyte trait data from the sampling in October 2021.
• coastclim-dataset-3-22.xlsx Macrophyte trait data from the sampling in March 2022.
• coastclim-dataset-6-22.xlsx Macrophyte trait data from the sampling in June 2022.
• coastclim-dataset-8-22.xlsx Macrophyte trait data from the sampling in August 2022.

File content

all-carbohydrates.xlsx

Number of tabs: 1
Number of variables: 5
Number of cases/rows: 728
Missing data codes: none

Variables

• Species Six letter code of the species:
  • MYRSPI Myriophyllum spicatum
  • CERDEM Ceratophyllum demersum
  • POTPER Potamogeton perfoliatus
  • RANBAU Ranunculus baudotii
  • RANCIR Ranunculus circinatus
  • RUPCIR Ruppia cirrhosa
  • STUPEC Stuckenia pectinata
  • ZANMAJ Zannichellia major
  • ZOSMAR Zostera marina
• Tissue Tissue compartment used for elemental analyses (leaf or rhizome)
• Carbohydrate The different carbohydrate compounds: Soluble (i.e. soluble sugars) and starch
• Time Timing of the data collection (March, June, August, October)
• Amount (mg/g) The amount of carbohydrate per dry weight of the sampled tissue in mg/g

C-N-seasonal.xlsx

Number of tabs: 1
Number of variables: 12
Number of cases/rows: 1143
Missing data codes: none

Variables

• Site Site and quadrat number from where macrophyte material was destructively harvested.
• Species Six letter code of the species:
  • FUCUS Fucus vesiculosus
  • MYRSPI Myriophyllum spicatum
  • CERDEM Ceratophyllum demersum
  • POTPER Potamogeton perfoliatus
  • RANBAU Ranunculus baudotii
  • RANCIR Ranunculus circinatus
  • RUPCIR Ruppia cirrhosa
  • STUPEC Stuckenia pectinata
  • ZANMAJ Zannichellia major
  • ZOSMAR Zostera marina
• Tissue Tissue used for elemental analyses (young/old Fucus, rhizome, root or leaf)
• Weight (mg) Weight of the sample used for elemental analysis in mg.
• Position Position in the well plate
• PON (µg) Amount of particulate organic nitrogen in µg
• δ15N Nitrogen stable isotope measurement
• POC (µg) Amount of particulate organic carbon in µg
• δ13C Carbon stable isotope measurement
• PON (µg/mg) Amount of particulate organic nitrogen per dry weight of sampled tissue in µg/mg
• POC (µg/mg) Amount of particulate organic carbon per dry weight of sampled tissue in µg/mg
• Time Timing of data collection (October, March, June, August)

coastclim-dataset-10-21.xlsx

Number of tabs: 2
Tab names:

• Mixed Data from soft sediments with mixed vegetation from sampling time October 2021.
• Hard-bottom Data from hard-bottom habitats from sampling time October 2021.

Tab mixed
Number of variables: 42
Number of cases/rows: 156

Variables

• Site The site number from where macrophyte material was destructively harvested, ranges from N_1 to N_3 and S_1 to S_3
• Quadrat Number of the collected quadrat, ranges from 1 to 8
• Species Six letter code of the species:
  • MYRSPI Myriophyllum spicatum
  • CERDEM Ceratophyllum demersum
  • POTPER Potamogeton perfoliatus
  • RANBAU Ranunculus baudotii
  • RANCIR Ranunculus circinatus
  • RUPCIR Ruppia cirrhosa
  • STUPEC Stuckenia pectinata
  • ZANMAJ Zannichellia major
  • ZOSMAR Zostera marina
• Max height (cm) Maximum height in cm
• Individual count The numbers of individuals present in the destructively harvested plant material
• Leaf area 1 (cm2) Leaf area 1 in cm^2
• Leaf perimeter 1 (cm) Leaf perimeter 1 in cm
• Leaf area 2 (cm2) Leaf area 2 in cm^2
• Leaf perimeter 2 (cm) Leaf perimeter 2 in cm
• Leaf dry mass 1 (mg) Dry mass weight of leaf 1 used for trait measurements in mg
• Leaf dry mass 2 (mg) Dry mass weight of leaf 2 used for trait measurements in mg
• SLA eppendorf (mg) Dry mass weight of the leaves used for trait measurements in mg
• Leaf dry mass eppendorf (mg) Dry mass weight of the leaves used for elemental analysis or trait measurements in mg
• Stem volume (cm3) Stem volume in cm^3
• Stem dry mass (mg) Drymass weight of stem tissue used for trait measurements in mg
• Rhizoom length (cm) Rhizome length in cm
• Rhizoom dry mass (mg) Drymass weight of rhizome tissue in the collected quadrat, which was not used for trait measurements in mg
• Rhizoom eppendorf (mg) Drymass weight of rhizome tissue used for trait measurements in mg
• Root volume (cm3) Total root volume of the root system in cm^3
• Total root length (cm) Total length of the root system in cm
• Average root diameter (mm) Average root diameter of the root system in mm
• Max rooting depth (cm) Maximum rooting depth in cm
• Root dry mass (mg) Drymass weight of root tissue in the collected quadrat, which was not used for root system measurements in mg
• Root eppendorf (mg) Drymass weight of root tissue used for root system measurements in mg
• Above ground dry mass (mg) Drymass weight of aboveground tissue in the collected quadrat, which was not used for trait measurements in mg
• Detritus dry mass (mg) Drymass weight of detritus present in the collected quadrat in mg
• Brown algae dry mass (mg) Drymass weight of Brown algae present in the collected quadrat in mg
• Red algae dry mass (mg) Drymass weight of Red algae present in the collected quadrat in mg
• Total aboveground dry mass (mg) Dry mass weight of all aboveground biomass present in the quadrat in mg
• Total belowground dry mass (mg) Dry mass weight of all belowground biomass present in the quadrat in mg
• Total rhizome dry mass (mg) Dry mass weight of all rhizome biomass present in the quadrat in mg
• Total root dry mass (mg) Dry mass weight of all root biomass present in the quadrat in mg
• Total dry mass (mg) Dry mass weight of all biomass present in the quadrat in mg
• Specific leaf area 1 (cm2/mg) The ratio of leaf area 1 to dry mass of the leaf in cm^2/mg
• Specific leaf area 2 (cm2/mg) The ratio of leaf area 2 to dry mass of the leaf in cm^2/mg
• Leaf area - perimeter ratio 1 The ratio of leaf area to perimeter of leaf 1 in %
• Leaf area - perimeter ratio 2 The ratio of leaf area to perimeter of leaf 2 in %
• Total leaf area (cm2) A proxy of total leaf area in cm^2
• Stem density (mg/cm3) The ratio of stem dry mass to stem volume in mg/cm^3
• Specific root length (cm/mg) The ratio of root length to dry mass of the root system in cm/mg
• Root tissue density (mg/cm3) The ratio of root dry mass to root volume in mg/cm^3
• Specific rhizome length (cm/mg) The ratio of rhizome length to dry mass of the root rhizome in cm/mg

Tab Hard-bottom
Number of variables: 33
Number of cases/rows: 48

Variables

• Site The site number from where macrophyte material was destructively harvested, ranges from N_1 to N_3 and S_1 to S_3
• Quadrat Number of the quadrat where in-situ measurements were taken, ranges from 1 to 8.
• Max height (cm) Height of the collected individual in cm
• Individual count The number of individuals present in the quadrat
• Depth range (m) Depth range of where the quadrat was layed down and in-situ measurements were taken in m
• Fresh mass leaf (mg) Fresh weight of thallus biomass (NEW tissue) in mg
• Leaf area (cm2) Thallus area (NEW tissue) in cm^2
• Leaf perimeter (cm) Thallus perimeter (NEW tissue) in cm
• Leaf volume (ml) Thallus volume (NEW tissue) in ml
• Leaf thickness 1 (mm) Thallus thickness 1(NEW tissue) in mm
• Leaf thickness 2 (mm) Thallus thickness 2(NEW tissue) in mm
• Leaf dry mass (mg) Dry mass weight of thallus, which is not used for trait measurements(NEW tissue) in mg
• Leaf dry mass eppendorf (mg) Dry mass weight of thallus used for trait measurements (NEW tissue) in mg
• Fresh mass leaf (mg) Fresh weight of thallus biomass (OLD tissue) in mg
• Leaf area (cm2) Thallus area (OLD tissue) in cm^2
• Leaf volume (ml) Thallus volume (OLD tissue) in ml
• Leaf thickness 1 (mm) Thallus thickness 1(OLD tissue) in mm
• Leaf thickness 2 (mm) Thallus thickness 2 (OLD tissue) in mm
• Leaf dry mass (mg) Dry mass weight of thallus, which is not used for trait measurements (OLD tissue) in mg
• Leaf dry mass eppendorf (mg) Dry mass weight of thallus used for trait measurements (OLD tissue) in mg
• Brown algae dry mass (mg) Drymass weight of Brown algae present on the collected individual in mg
• Red algae dry mass (mg) Drymass weight of Red algae present on the collected individual in mg
• Total thallus dry mass NEW (mg) Dry mass weight of all NEW thallus biomass present in the quadrat in mg
• Total thallus dry mass OLD (mg) Dry mass weight of all OLD thallus biomass present in the quadrat in mg
• Thallus dry matter content NEW (%) The ratio of thallus dry mass weight (NEW) to fresh mass in %
• Thallus dry matter content OLD (%) The ratio of thallus dry mass weight (OLD) to fresh mass in %
• Specific thallus area New (cm2/mg) The ratio of Thallus area (NEW) to dry mass of the thallus in cm^2/mg
• Specific thallus area OLD(cm2/mg) The ratio of Thallus area (OLD) to dry mass of the thallus in cm^2/mg
• Total thallus area NEW (cm2) A proxy of total NEW thallus area in cm^2
• Total thallus area OLD(cm2) A proxy of total OLD thallus area in cm^2
• Thallus surface area to volume NEW (cm2/ml) The ratio of Thallus area (NEW) to volume of the thallus in cm^2/ml
• Thallus surface area to volume OLD (cm2/ml) The ratio of Thallus area (OLD) to volume of the thallus in cm^2/ml
• Thallus surface area - perimeter ratio NEW The ratio of thallus area (NEW) to perimeter of thallus in %

coastclim-dataset-3-22.xlsx

Number of tabs: 2
Tab names:

• Mixed Data from soft sediments with mixed vegetation from sampling time March 2022.
• Hard-bottom Data from hard-bottom habitats from sampling time March 2022.

Tab mixed
Number of variables: 38
Number of cases/rows: 57

Tab Hard-bottom
Number of variables: 32
Number of cases/rows: 24

See above for variable list which is similar to sampling time October 2021.

coastclim-dataset-6-22.xlsx

Number of tabs: 1
Tab name:

• Mixed Data from soft sediments with mixed vegetation from sampling time June 2022.

Tab mixed
Number of variables: 38
Number of cases/rows: 69

See above for variable list which is similar to sampling time October 2021.

coastclim-dataset-8-22.xlsx

Number of tabs: 2
Tab names:

• Mixed Data from soft sediments with mixed vegetation from sampling time August 2022.
• Hard-bottom Data from hard-bottom habitats from sampling time August 2022.

Tab mixed
Number of variables: 34
Number of cases/rows: 72

Tab Hard-bottom
Number of variables: 20
Number of cases/rows: 24

See above for variable list which is similar to sampling time October 2021.

Comments

Associated datasets

During the same 2021⁠–⁠2022 seasonal campaign data on the following were additionally collected and will be published separately: macrozoobenthos, sediment data, greenhouse gases in the water column and the atmosphere.

CoastClim

This is a contribution from the Centre for Coastal Ecosystem and Climate Change Research. CoastClim is a multidisciplinary strategic partnership between Stockholm University and the University of Helsinki, that evaluates the links between coastal biodiversity, carbon cycling, and climate feedbacks.

Project

Walter and Andrée de Nottbeck Foundation (PhD grant R.L. and E.R), Jane and Aatos Erkko Foundation (A.N), Research Council of Finland (project grant 354454 C.G.). This study used research infrastructure facilities at Tvärminne Zoological Station, University of Helsinki, as part of FINMARI (Finnish Marine Research Infrastructure Consortium).

Publisher

Bolin Centre Database

License

Creative Commons Attribution 4.0 International License (CC BY 4.0)

First name

Camilla

Last name or organisation

Gustafsson

Email address

camilla.gustafsson@helsinki.fi

Address

Tvärminne Zoological Station; University of Helsinki

Postal code

10900

City

Hanko

Country

Finland

GCMD science keyword

Earth science > Biosphere > Aquatic ecosystems > Benthic habitat

GCMD location

Continent > Europe > Northern Europe > Scandinavia > Finland

Dataset language

English

Begin date

2021-10-11

End date

2022-08-15

DOI

Time