“…For eight of the 10 species analysed in the present study, their vertical distributions after the earthquake were considerably different from those before the earthquake. It is highly plausible that the abundance and vertical distribution of these species across the entire range of the study area were significantly altered by the 2011 Great East Japan Earthquake, accompanying large tsunami, and coseismic subsidence, as has been similarly reported in other studies showing that large earthquakes that triggered tsunamis and coseismic uplift heavily damaged rocky intertidal communities (Haven, 1972; Bodin & Klinger, 1986; Castilla, 1988; Castilla & Oliva, 1990; Kendall et al ., 2006; Patterson Edwards et al ., 2006; Sanpanich et al ., 2006; Castilla et al ., 2010).…”
“…For eight of the 10 species analysed in the present study, their vertical distributions after the earthquake were considerably different from those before the earthquake. It is highly plausible that the abundance and vertical distribution of these species across the entire range of the study area were significantly altered by the 2011 Great East Japan Earthquake, accompanying large tsunami, and coseismic subsidence, as has been similarly reported in other studies showing that large earthquakes that triggered tsunamis and coseismic uplift heavily damaged rocky intertidal communities (Haven, 1972; Bodin & Klinger, 1986; Castilla, 1988; Castilla & Oliva, 1990; Kendall et al ., 2006; Patterson Edwards et al ., 2006; Sanpanich et al ., 2006; Castilla et al ., 2010).…”
“…Considerable effort has been made towards recovery. Studies that contribute to understanding the effects of the tsunami on marine organisms include those on microbial life in both seawater and coastal sediments (Ramesh et al 2006), the coral reef community (Chavanich et al 2005;Hughes et al 2005;Kumaraguru et al 2005;Phongpaichit et al 2006), mangrove ecosystems (Dahdouh-Guebas et al 2005;Danielsen et al 2005;Vermaat and Thampanya 2006) and on some littorinid mollusks (Sanpanich et al 2006). However, only a few preliminary studies on the seagrass and seaweed community have been reported (Mantri 2005(Mantri , 2006Prathep and Tantiprapas 2006).…”
The tsunami that hit the coast of Thailand along the Andaman Sea on 26 December 2004 caused great damage to human life, property and coastal resources. Here we report the effect of the tsunami on the seaweed community, and its recovery, at Talibong Island, one of the affected areas in Trang province. We made surveys at three sites around the island from April 2004 to January 2006. Fifteen 0.5 m × 0.5 m permanent plots were set up on the west coast of the island to monitor changes in the seaweed community. Eighteen species were found. Sargassum stolonifolium and Laurencia composita were the most abundant, covering 90% and 39%, respectively, of the rocky substrate. Thirteen species varied among sites and seasons. Eleven species, however, were strongly affected by the tsunami. L. composita and Padina sanctae-crucis, for example, were initially washed up onto the shore by the strong wave action, which clearly resulted in a decrease in percentage cover. Also, many permanent plots were covered by sediment causing anoxic conditions, an indirect impact of the tsunami. A difference in species composition revealed a change in overall diversity. Particular morphologies and life forms were more sensitive to the extremes of the tsunami than others. Therefore, the recovery ability of populations of the affected species varied. We did not find any seasonal pattern to the recovery of seaweed after the tsunami within the 13 months of this study.
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