Shade-induced response and recovery of the seagrass Posidonia sinuosa

Publisher:
Elsevier Science Bv
Publication Type:
Journal Article
Citation:
Journal Of Experimental Marine Biology And Ecology, 2009, 370 (1-2), pp. 89 - 103
Issue Date:
2009-01
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The effect of shading on the seagrass Posidonia sinuosa Cambridge et Kuo was investigated to identify mechanisms that prolong its survival during periods of low light and permit its subsequent recovery. We also tested whether the responses were consistent in plants growing at different depths. Shade treatments were low (LS; 70 - 100% of ambient Photosynthetic Photon Flux Density), medium (MS; 12 - 39%) and heavy (HS; 5 - 4%) at the shallow (3 - 4 m) site, whilst the deep (7 - 8 m) site had no HS treatment. HS at the shallow and MS at the deep site were below minimum light requirements (MLR) for the long-term survival of P. sinuoso.
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