Effects of different types of mechanical disturbances on a charophyte dominated macrophyte community |
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Authors: | Kaire Torn Georg MartinJonne Kotta Maarit Kupp |
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Affiliation: | Estonian Marine Institute, University of Tartu, Mäealuse 10a, 12618 Tallinn, Estonia |
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Abstract: | Charophytes are unique and endangered macroalgae. Mechanical stress is known to damage charophyte communities, however, virtually nothing is known how such disturbance affect seasonal succession and recovery of charophyte communities. We examined the response of a shallow water charophyte community to different types and timing of disturbances by conducting seasonal in situ field experiment in a brackish water ecosystem. The disturbances associated with mechanical removal of vegetation or sediment had the largest impact on the charophyte community. Disturbances that only partly damaged the plants had minor effects and communities were characterized by fast recovery. The timing of disturbance had significant effects on the charophyte community with stronger effects when disturbed at the early stage compared to mid-stage of seasonal succession. |
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Keywords: | Baltic Sea charophytes disturbance sensitivity recovery |
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