Wittmann 1984b
Wittmann 1984b
WITTMANN, K. J., 1984b: Temporal and Morphological Variations of Growth in a Natural Stand of Posidonia oceanica (L.) DELILE. P.S.Z.N.I: Marine Ecology, 5 (4): 301-316.
https://doi.org/10.1111/j.1439-0485.1984.tb00128.x
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0485.1984.tb00128.x/abstract
Growth of Posidonia oceanica (L.) DELILE was studied in a natural stand in 4 m depth at Ischia (Gulf of Naples). Renewal and growth of leaves was continuous throughout the year but showed strong seasonal modulation. The major factor for individual leaf growth as well as for the seasonal aspects of the entire foliage is seasonal modulation of leaf appearance rather than of leaf growth. Leaf area index varied between 2 m2 • m-2 in autumn and 6 M2. m-2 in late summer. Annual production is estimated to be 613 g dw . m-2 for leaf blades, 54 g dw • m-2 for leaf sheaths, and 27 g dw • m-2 for rhizomes. Rhizome production is highly different between the primary and the secondary growth axis (274 versus 30 mg dw • shoot-1 • y-1, respectively) in plagiotrope growth. Both foliage and rhizome growth are positively correlated with leaf width.
leaf productivity; growth; Mediterranean; seagrasses; phenology; primary productivity
Posidonia oceanica