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Grazing of Inflorescences of the Seagrass Posidonia oceanica (L.) Delile

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Published/Copyright: June 1, 2005
Botanica Marina
From the journal Volume 43 Issue 6

Abstract

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.

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Published Online: 2005-06-01
Published in Print: 2000-10-30

Copyright (c)2000 by Walter de Gruyter GmbH & Co. KG

Articles in the same Issue

  1. Contents
  2. Taxonomical Index
  3. Subject Index
  4. Author Index
  5. Common Diatom Species in Arctic Spring Blooms: Their Distribution and Abundance
  6. Growth, Agar Yield and Quality of Selected Agarophyte Species from the Philippines
  7. Experimental Analysis of Rhodophyte Photoacclimation to PAR and UV-Radiation using In Vivo Absorbance Spectroscopy
  8. Extubocellulus spinifer (Hargraves et Guillard) Hasle, von Stosch et Syvertsen (Bacillariophyceae) in North Brittany
  9. Temporal Dynamics of Zostera marina L. off the Lagoon of Grado (Northern Adriatic Sea, Italy)
  10. Filamentous Algae Dominate a Tropical Reef Community in the Mexican Caribbean: an Unexpected Organisation of Reef Vegetation
  11. Phosphoenolpyruvate Carboxykinase from the Marine Diatom Skeletonema costatum and the Phaeophyte Laminaria setchellii. I. Isolation and Biochemical Characterization
  12. Taxonomic Notes on Marine Algae from Malaysia. IV. Six Species of Ceramiales (Rhodophyceae)
  13. Grazing of Inflorescences of the Seagrass Posidonia oceanica (L.) Delile
  14. Acknowledgement
https://doi.org/10.1515/BOT.2000.058

Articles in the same Issue

  1. Contents
  2. Taxonomical Index
  3. Subject Index
  4. Author Index
  5. Common Diatom Species in Arctic Spring Blooms: Their Distribution and Abundance
  6. Growth, Agar Yield and Quality of Selected Agarophyte Species from the Philippines
  7. Experimental Analysis of Rhodophyte Photoacclimation to PAR and UV-Radiation using In Vivo Absorbance Spectroscopy
  8. Extubocellulus spinifer (Hargraves et Guillard) Hasle, von Stosch et Syvertsen (Bacillariophyceae) in North Brittany
  9. Temporal Dynamics of Zostera marina L. off the Lagoon of Grado (Northern Adriatic Sea, Italy)
  10. Filamentous Algae Dominate a Tropical Reef Community in the Mexican Caribbean: an Unexpected Organisation of Reef Vegetation
  11. Phosphoenolpyruvate Carboxykinase from the Marine Diatom Skeletonema costatum and the Phaeophyte Laminaria setchellii. I. Isolation and Biochemical Characterization
  12. Taxonomic Notes on Marine Algae from Malaysia. IV. Six Species of Ceramiales (Rhodophyceae)
  13. Grazing of Inflorescences of the Seagrass Posidonia oceanica (L.) Delile
  14. Acknowledgement
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