Effects of current velocity and substrate composition on growth of Texas wild rice (Zizania texana).

Citation

Material Information

Title:
Effects of current velocity and substrate composition on growth of Texas wild rice (Zizania texana).
Series Title:
Aquatic Botany
Creator:
Power, Paula
Publisher:
Elsevier
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Current Velocity ( local )
Endangered ( local )
Macrophyte ( local )
Photosynthesis ( local )
Texas Wildrice ( local )
Sediment ( local )
Zizania Texana ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
Zizania texana Hitchc., an endangered macrophyte has declined in number during the past 50 years. To determine the effects of substrate composition and current velocity on plant growth, plants were grown in pots containing either fine or coarse sediment at three sites in Spring Lake, Hays Co., TX. Each site was similar in depth but differed in current velocity. Plants were allowed to grow for 6 weeks and then harvested. Growth was greater on fine sediments. There was significant interaction between flow and sediment with respect to aboveground biomass and stem density and, there was significant flow effect on leaf length and stem density. Stem density was greater in fast flowing water (0.40–0.49 m s−1) than either moderate (0.12–0.24 m s−1) or slow flowing (0.05–0.12 m s−1) water. The decline in Zizania texana population can be attributed, in part, to physical changes to Zizania texana habitat.
Original Version:
Aquatic Botany, Vol. 55, no. 3 (1996-11).

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Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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