Physical Constraints to Aquatic Plant Growth in New Zealand Lakes

Hawes, Ian and Riis, T. and Sutherland, D. and Flanagan, M. (2003) Physical Constraints to Aquatic Plant Growth in New Zealand Lakes. Journal of Aquatic Plant Management, 41, pp. 44-52.

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The nature of aquatic plant communities often defines benthic habitat within oligotrophic and mesotrophic lakes and lake management increasingly recognizes the importance of maintaining plant diversity in order to sustain biological diversity and capacity within lakes. We have developed simple statistical relationships between key physical and vegetation variables that define the habitat requirements, or “habitat-templates”, of key vegetation types to facilitate management of plant communities in New Zealand lakes. Statistical relationships were derived from two datasets. The first was a multi-lake dataset to determine the effects of water level fluctuation and water clarity. The second dataset was from a comprehensive shoreline survey of Lake Wanaka, which allowed us to examine within-lake variables such as beach slope and wave action. Sufficient statistical relationships were established to develop a habitat template for each of the major species or assemblages. The relationships suggested that the extent and diversity of shallow-growing species was related to a combination of the extent of water level fluctuation and wave exposure. (PDF contains 9 pages.)

Item Type: Article
Title: Physical Constraints to Aquatic Plant Growth in New Zealand Lakes
Personal Creator/Author:
Hawes, Ian
Riis, T.
Sutherland, D.
Flanagan, M.
Refereed: Yes
Journal or Publication Title: Journal of Aquatic Plant Management
Volume: 41
Page Range: pp. 44-52
Date: 2003
Issuing Agency: Aquatic Plant Management Society, Inc.
Additional Information: January 2003
Uncontrolled Keywords: wave exposure, water clarity, water level fluctuation, aquatic plant communities, habitat-templates; New Zealand; lakes
Subjects: Management
Item ID: 1640
Depositing User: Stephanie Haas
Date Deposited: 07 Nov 2008 01:01
Last Modified: 29 Sep 2011 20:15

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