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European seagrasses an assessment of current trends

Laan, A.J.J. van der (2020) European seagrasses an assessment of current trends. Bachelor's Thesis, Biology.

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Abstract

Seagrass meadows are ecosystems with a high productivity and biomass, which provide important ecosystem services; providing carbon for other marine ecosystems and purifying water. They are important to humans too, being a nursery for commercial fish species and protecting the coasts. The four seagrass species of Europe are highlighted in this review. They have been declining in the 20th century because of several causes: water quality degradation, wasting disease, coastal degradation and mechanical damage. All of these causes affected different species and measures to these threats have been taken to stop the decline, but outcomes vary: measures like the nutrient load reduction in runoff water have proven useful to alleviate water quality degradation, whereas anchoring restrictions failed to cease the threat of mechanical damage. We conclude that seagrass meadows in Europe are increasing again, and to ensure continuation of this increase measures need to be monitored and updated. Positivity is warranted, but letting go too soon could mean a trend shift once again.

Item Type: Thesis (Bachelor's Thesis)
Supervisor name: Eriksson, B.D.H.K.
Degree programme: Biology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 13 Aug 2020 07:22
Last Modified: 13 Aug 2020 07:22
URI: https://fse.studenttheses.ub.rug.nl/id/eprint/23073

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