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Optimizing Wetland Functions to Local Conditions in Connection
to Quarries
By Emma Svahn, Marcus Hall, and Sandra Nilsson 2016
We are going to present:
• Introduction and why we did this
• Methods and results
• Our suggestion for multifunctional wetland
Introduction • Today
- Increasing population- decrease in available habitats - Water scarcity (Öland) - Nitrogen based explosives
• Wetlands have decreased, red listed species and biodiversity
Solution - Wetland!
Questions How can Cementa
2) provide habitats for threatened species, and 3) increase the biodiversity through rehabilitation of ecosystem functions.
1) improve the quality of the water pumped from the quarry to the watershed (and eventually the Baltic Sea)
Dam Wetland
Study site
What we did • Nutrient concentrations • Water chemistry • Bioassay- Growth limiting nutrient • Biodiversity inventory
Results
• Turbid water (Particles)
• High nitrogen input and low nitrogen retention
• Low phosphorous concentrations
• Low biodiversity
Suggested layout Depth profile
Suggested layout Zonation
Conclusion
• Constructing a multifunctional wetland will - Increase nutrient removal - Increase biodiversity in connection to the quarry - Increase biodiversity on a landscape level
Thank you for listening!
…and thanks to HeidelbergCement Group Staffan Johnson, Cementa Degerhamn Börje Ekstam Karin Holmfeldt Sara Gunnarsson Elin Lindehoff Lina Mattsson Mireia Bertos-Fortis Terese Uddh Söderberg
Contact: Emma Svahn, es223ed@student.lnu.se Marcus Hall, mh223ik@student.lnu.se Sandra Nilsson, sn222kq@student.lnu.se
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