Experimental restoration of the Charophytes Chara aspera and Chara tomentosa in a shallow Baltic Sea bay
https://doi.org/10.5878/gcf6-qr58
This data comprises three different experiments in three different areas to test methods for (A) replanting C. aspera, (B) the effects of harvesting C. aspera on the donor C. aspera meadow and (C) replanting C. tomentosa. The experiment took place over two growing seasons and light, temperature and sediment water and organic matter content data is also available for the experimental areas. Three methods of planting were tested for C. aspera, spade planting, jute band, BESE elements© and natural recolonization and two methods for C. tomentosa, BESE elements and natural recolonization. Additionally, four levels of harvesting were tested in the C. aspera meadow, removal of 0, 0.8%, 1.8% or 2.6 % of the C. aspera coverage. Shoot height, shoot density and coverage of aquatic vegetation species in the plots was measured on 1 June (before treatment), 1 July, 24 August and 29 September 2021 by snorkelling. Follow up measurements of vegetation coverage were made 15 months after initial planting on 14 September 2022 for all the plots.
Documentation files
Documentation files
- README_Experimental_restoration_of_the_Charophytes_C._aspera_and_C._tomentosa_in_a_shallow_Baltic_Sea_bay.pdf202.82 KiB
Citation and access
Citation and access
Data access level:
Creator/Principal investigator(s):
- Peter Nordling – Gävleborg County Administrative Board
Research principal:
Principal's reference number:
- SLU.aqua.2025.4.2.IÄ-1
Data contains personal data:
No
Citation:
Language:
Method and outcome
Method and outcome
Time period(s) investigated:
Data format/data structure:
Species and taxons:
Data collection - Field/Intervention experiment
Data collection - Field/Intervention experiment
Mode of collection:
Field/Intervention experiment
Description of the mode of collection:
Shoot height, shoot density and coverage of aquatic vegetation species in the plots was measured on 1 June (before treatment), 1 July, 24 August and 29 September 2021 by snorkelling. Follow up measurements of vegetation coverage were made 15 months after initial planting on 14 September 2022 for all the plots. Sediment cores were taken for sediment organic and water content measurements. Continuous monitoring on temperature and light took place with HOBO loggers during the experiments.
Time period(s) for data collection:
2021-06-01 - 2022-09-14
Data collector:
- Swedish University of Agricultural Sciences
Opens a new window at ror.org.
ROR
Temporal resolution:
month
Spatial resolution:
0.5 kilometres scale
Geographic coverage
Geographic coverage
Geographic location:
Geographic description:
Siviksfjärden: A sheltered shallow open bay in the Baltic Sea in Gävleborgs län
Administrative information
Administrative information
Responsible department/unit:
Department of Aquatic Resources
Contributor(s):
- Emil Kraft – Gävleborgs county board
- Elena Tamarit – University of Gothenburg
- Peter Nordling – Gavelborgs county board
Funding
Funding
Funding agency:
- County board of Gävleborg
Funding information:
County board Gävleborg, funding post 1:11
Topic and keywords
Topic and keywords
Swedish Standard Classification of Research Subjects 2025:
Publications
Publications
Citation:
CL. Faithfull, E. Tamarit, P. Nordling, E. Kraft (2024). Restoring charophytes is still a challenge: a call for developing successful methods. Aquatic Botany, 193, 103777.
