Seasonality and depth zonation of intertidal Halophila ovalis and Zostera japonica in Ha Long Bay (Northern Viet Nam)

T.T.L. Huong, J.E. Vermaat, J.T. Terrados, N.V. Tien, C.M. Duarte, J. Borum, N.H. Tri

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Seasonality and depth zonation of two common intertidal northern Vietnamese seagrass species, Halophila ovalis and Zostera japonica, were investigated in a 50 m long intertidal transect from 1999 till 2001. Z. japonica occurred in the middle intertidal (1.2 m above mean chart datum to mean sea level at 2.1 m above chart datum). H. ovalis occurred deeper in the intertidal (between 1.0 and 1.4 m above chart datum). Based on seasonally different sensitivity to reciprocal transplants, it is concluded that this zonation is most likely due to different tolerances to low light availability (less in Z. japonica) and desiccation (less in H. ovalis). Both species reached maximum shoot densities in September-October with total biomasses around 70 g DW m
Original languageEnglish
Pages (from-to)147-157
Number of pages11
JournalAquatic Botany
Volume75
DOIs
Publication statusPublished - 2003

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