Department of Marine Science, Faculty of Fisheries, Kasetsart University
抄録
In the mixed species of seagrass bed, the meiobenthic community was studied in the Tha Len Bay, Krabi Province, Thailand. The bed in the shallow water mainly consisted of three species of seagrasses, namely Halophila ovalis, Thalassia hemprichii and Halodule uninervis. From four monospecific patches of each seagrass species and adjacent barren area, sediment samples were sampled randomly for collecting meiofauna and measuring environmental factors. Free-living nematodes were the most dominant group in terms of abundance and that accounted for 75-85% of the total meiobenthos. From nematodes samples, 329 putative species, belonging to 125 genera and 25 families, were found. The average density was highest (714ind./10cm^2) in H. ovalis and lowest (332ind./10cm^2) in the barren area. Regarding the result of multidimensional scaling analysis, there were differences in nematode communities among area covered by different seagrass species. The nematode communities in the smallest seagrass species (H. ovalis) and barren area were similar that Metalinhomoeus sp. 1 and Gomphionema sp. were dominant. On the other hand, Paralongicyatholaimus sp. 2, Perspiria sp. 1, and Desmodora sp. 3 were dominant species in H. uninervis area, and Paralongicyatholaimus sp. 2 and Praeacanthonchus sp. 1 in T. hemprichii area. The study implies that the difference in complexity of seagrass root and leaf morphology among seagrasses species causes the differences in nematode communities.
雑誌名
Coastal marine science
巻
30
号
1
ページ
146 - 153
発行年
2006-04-28
ISSN
13493000
書誌レコードID
AA11957899
フォーマット
application/pdf
日本十進分類法
452
出版者
International Coastal Research Center, Ocean Research Institute, the University of Tokyo
Spatial distribution of meiobenthic community in Tha Len seagrass bed, Krabi Province, Thailand
KJ00004354597.pdf
(956.73KB)
