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Morphological and Anatomical Differences among Three Seagrass Species in a High-energy Coastal Area Typically Dominated by Surfgrass in a Rocky Coastal Area of Shandong Peninsula, China
Ist Teil von
Ocean Science Journal, 2020, 55(2), , pp.279-288
Ort / Verlag
Seoul: Korea Institute of Ocean Science & Technology and The Korean Society of Oceanography
Erscheinungsjahr
2020
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Surfgrass
Phyllospadix iwatensis
is the dominant seagrass species in the coastal area of Mashanli, which lies at the east end of Shandong Peninsula, China. To our surprise, some
Zostera marina
and
Zostera caespitosa
patches have been recently found adjoining the surfgrass meadows. How the two
Zostera
species adapt to the high-energy habitats where
Phyllospadix
spp. thrive, and what kind of differences there are in the morphology and anatomy among the three species are unknown. To understand their adaptation strategies to the environment, we observed their morphological feature and anatomical structure of the three seagrass species by optical microscope. The results showed that much narrower leaves were observed in
P. iwatensis
, much higher plant density was observed in
Z. caespitosa
and
Z. marina
and much lower plant height was observed in
Z. marina
, which might have contributed to their adaptation in the environment. While for the supporting tissues (the epidermis, mesophyll cells, and vascular bundles for leaves, as well as the epidermis, exodermis and stele for rhizomes), the number of mesophyll cells in the leaves and the proportion of the other tissues in the cross sections in the leaves and rhizomes were significantly different among species. The results suggested that the three species adapt to the high-energy environment through different strategies.