NDLI: Gradients controlling vegetation in Alnus japonica forests in Kushiro mire, Hokkaido, Japan

Content Provider	Springer Nature Link
Author	Negishi, Tomoko
Copyright Year	2008
Abstract	This study examined factors controlling the vegetation in Kushiro mire, northern Japan, especially in the alder and reed communities. The alder community was classified into four types that were arranged by canonical correspondence analysis (CCA) as follows: Carex lasiocarpa type, Carex augustinowiczii type, Persicaria type, and Spiraea type. The four types exhibited differences in size (tree height) and in the ratio of sprouting stems. Although plants growing on the forest floor primarily determined the species composition of the community, shading by alder crowns had no marked effect on the community gradient. Therefore, hydrochemical variables could control the growth and occurrence of both the floor plants and alder tree size. The differences between reed community and the alder community sites were characterized as heavily eutrophic by the Kruskal–Wallis test. Overall, the chemical variables pH and P$_{2}$O$_{5}$ and the hydrochemical variables maximum and range of water level were positively correlated with the CCA axis, and effectively explained the community gradient in relation to alder growth. These variables could be controlled by the inflow of neutral and turbid water from river floods or run-off, which would increase pH by replacing the acidic mire water, ash content, and P$_{2}$O$_{5}$ by conveying suspended inorganic particles that adsorb phosphorus.
Starting Page	23
Ending Page	31
Page Count	9
File Format	PDF
ISSN	18601871
Journal	Landscape and Ecological Engineering
Volume Number	5
Issue Number	1
e-ISSN	1860188X
Language	English
Publisher	Springer Japan
Publisher Date	2008-12-23
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Alder Flooding Reed community Sprouting Floor vegetation Plant Ecology Landscape/Regional and Urban Planning Environmental Management Civil Engineering Nature Conservation Landscape Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Management, Monitoring, Policy and Law Nature and Landscape Conservation

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