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Title: INFLUENCE OF DRAINAGE RECONSTRUCTION AFTER BEAVER INFUENCE ON TREE INCREMENT: CASE STUDY IN LATVIA
INFLUENCE OF DRAINAGE RECONSTRUCTION AFTER BEAVER INFUENCE ON TREE INCREMENT: CASE STUDY IN LATVIA

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K. Bickovskis; B. Jansone; L. Sisenis; I. Pilvere; A. Ozola
10.5593/sgem2021/3.1/s14.77
1314-2704
978-619-7603-24-8
English
21
3.1
• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Forest Ecosystems
Flow of water and thus access of oxygen to the roots of the trees is ensured by drainage system. Therefore these system had been established, mostly since 1960th and 70th in a third of the forest area of Latvia. It has boosted the overall increment of forests substantially. However, around the same time, also beavers had been reintroduced in territory of our country. Water flow is often stopped by beaver dams. The aim of our case study was to assess the impact of dam removal and ditch reconstruction on the increment of trees. Increment cores were collected from 137 trees at a distance up to 45 m from the ditch in two the drainage system that was reconstructed 6 years prior. Sampling included primarily black alder that is less frequently studied in this context.
Increment was highest for trees growing closer to the ditch. Also the survival of trees was significantly higher closer to the ditch, indicating a better growing conditions. Reestablishment of water flow did not ensure immediate positive change in the increment of trees. For black alder it was significant and on average 20-23%; however in some sites and for other tree species such influence was not observed presumably due to prolonged period of negative effect of standing water and/or tree age.
conference
https://www.sgem.org/index.php/jresearch-article?citekey=Bickovskis202114619625
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
Proceedings Paper
STEF92 Technology
SGEM International Multidisciplinary Scientific GeoConference
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
475-482
16 - 22 August, 2021
website
cdrom
8024
beaver dams; water flow; melioration; ditch reconstruction; ditch maintenance