Effect of different substrata on rhizome growth, leaf biometry and shoot density of Posidonia oceanica

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Abstract

The effects of different substratum typologies on Posidonia oceanica growth and morphology were estimated in four Sicilian meadows using Generalized and Linear Mixed Models combined with retrodating and biometric analyses. Substratum exerted a multiple effect, resulting in different biometric features for P. oceanica shoots settled on rock from those growing on sand and matte. On rock, values for growth rate, leaf length and shoot surface were lower than those on other substrata, with 42%, 23% and 32% the highest degree of difference respectively. The present study may have interesting methodological consequences for the comprehensive understanding of the causative variables potentially affecting meadows features and their health status. The importance of substratum in the prediction of likely biometry changes in P. oceanica meadows, means that knowledge of substratum type should receive due attention in the future to derive reliable estimates of meadow status
Original languageEnglish
Pages (from-to)96-102
Number of pages7
JournalMarine Environmental Research
Volume87-88
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution

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