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Abstract
Existing mitigations to address deterioration in water clarity associated with human activities are based on responses from single seagrass species but may not be appropriate for diverse seagrass assemblages common to tropical waters. We present findings from a light experiment designed to determine the effects of magnitude and duration of low light on a mixed tropical seagrass assemblage. Mixed assemblages of three commonly co-occurring Indo-West Pacific seagrasses, Cymodocea serrulata, Halodule uninervis and Halophila ovalis were grown in climate-controlled tanks, where replicate pots were subjected to a gradient in light availability (0.9–21.6 mols PAR m−2 day−1) for 12 weeks. Increased shading resulted in declines in growth and changes in cellular and photosynthesis responses for all species, although time-scale and magnitude of response were species-specific. Applying management criteria (e.g. thresholds) relevant to one species may under- or over-estimate potential for impact on other species and the meadow as a whole.
Original language | English |
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Pages (from-to) | 508-518 |
Number of pages | 11 |
Journal | Marine Pollution Bulletin |
Volume | 128 |
DOIs | |
Publication status | Published - 1 Mar 2018 |
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Dive into the research topics of 'Determining light stress responses for a tropical multi-species seagrass assemblage'. Together they form a unique fingerprint.Projects
- 1 Finished
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Overcoming Critical Recruitment Bottlenecks Limiting Seedling Establishment in Degraded Seagrass Ecosystems: A Systems Approach to Restoration
Kendrick, G. (Investigator 01), Duarte, C. (Investigator 02), Dixon, K. (Investigator 03), Merritt, D. (Investigator 04), Orth, R. (Investigator 05), Broenland, E. (Investigator 06) & Williams, M. (Investigator 07)
ARC Australian Research Council , BMT (Australia), Mitsui Pty Ltd (Shark Bay Salt), William and Mary, Botanic Gardens and Parks Authority
1/01/13 → 31/12/16
Project: Research