Grazing of inflorescences of the seagrass Posidonia oceanica (L.) Delile

被引:28
作者
Piazzi, L
Balestri, E
Cinelli, F
机构
[1] Univ Pisa, Dipartimento Sci Uomo & Ambiente, I-56126 Pisa, Italy
[2] Consorzio Ctr Interuniv Biol Marina & Ecol Applic, I-57127 Livorno, Italy
关键词
D O I
10.1515/BOT.2000.058
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
An experiment using cages was designed to demonstrate herbivore consumption of Posidonia oceanica (L.) Delile reproductive structures, in a north-western area of the Mediterranean Sea. The percentages of mature inflorescences and those damaged by herbivores in caged vs, uncaged (control) vs. partially caged plants (artefact control) were compared. Inflorescences damaged by herbivores were 84.3 +/- 3.1% in the control and 79.5 +/- 3.2 % in partial cages. Significantly more mature inflorescences were found in caged (37.5 +/- 2.4%) vs. uncaged (10.1 +/- 2.9 %) and partially caged plants (6.7 +/- 0.9 %). The real contribute of herbivores to the loss of fertilised inflorescences of P. oceanica was approximately 27 %, as the differences between mortality in caged and in uncaged plants. These results suggest that herbivores could affect sexual reproduction in P. oceanica, but further investigation is needed to investigate biotic interactions in the meadows.
引用
收藏
页码:581 / 584
页数:4
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