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Quantifying seed transport in the river Drentse Aa

Verbeek, S.K. (1999) Quantifying seed transport in the river Drentse Aa. Master's Thesis / Essay, Biology.

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In this study we tried to quantify seed transport in the small river Drentse Aa, and to relate this to the adjacent vegetation. This was done by placing seed traps upstream and downstream of a regularly flooded nature reserve. We assumed that downstream of the nature reserve more species and more seeds would be intercepted than upstream. We did not find large differences between the number of species found at the downstream and upstream site. Also no apparent difference in number of seeds caught at the downstream and upstream site was found. From this study it is dear that a nature reserve like the Kappersbult area is not a large source for seed dispersal through the river Drentse Aa during the summer season, probably through lack of flooding. Although part of the area is continuously inundated it does not add many seeds to the river. We assume that a great deal of seeds in the river originates from riverbank vegetation and therefore it is important to protect these banks in nature conservation policies. We consider a flood to disperse large quantities of seeds. If this hypothesis turns out to be true, it would be of importance to bring back rivers in their original state in restoration projects along river comdors.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Biology
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 07:44
Last Modified: 15 Feb 2018 07:44

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