Ecological Impacts of Tsunamis on Coastal Ecosystems: by Jotaro Urabe, Tohru Nakashizuka

By Jotaro Urabe, Tohru Nakashizuka

This booklet makes a speciality of the ecological affects of the good East Japan Earthquake and ensuing tsunamis, a unprecedented and intensely huge disturbance occasion, on a variety of coastal ecosystems in Japan’s Tohoku region, together with sub-tidal and tidal animal groups, sand dune plant groups and coastal forests. The reports provided right here describe not just how species and populations in those ecosystems have been disturbed via the earthquake and tsunamis, but in addition how the groups have spoke back to the development and what varieties of anthropogenic actions will bog down their restoration processes.

In the ecological sciences, it's always argued that enormous disturbances are serious to shaping neighborhood buildings and biodiversity in neighborhood and local habitats. even if, our knowing of those roles continues to be constrained, just because there were few possibilities to ascertain and deal with the ecological affects of enormous disturbance occasions. the dimensions of the 2011 nice East Japan Earthquake makes it one of many biggest risks long ago one thousand years. hence, this booklet offers a distinct chance to enhance our realizing of the ecological affects of enormous and infrequent disturbances and the consequences of those occasions within the conservation and administration of coastal ecosystems.

Following an summary of the good East Japan Earthquake, the book’s content material is split into significant components. half I reviews on reports reading the ecological affects of the tsunamis on sub-tidal and tidal animal groups, whereas half II specializes in terrestrial plant groups in Japan’s coastal Tohoku sector.

This ebook will gain all scientists attracted to the ecological affects of huge disturbances on aquatic and terrestrial ecosystems in most cases, and particularly those who find themselves attracted to the ecological administration of coastal ecosystems and environment dependent catastrophe possibility relief (EcoDRR).

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Extra resources for Ecological Impacts of Tsunamis on Coastal Ecosystems: Lessons from the Great East Japan Earthquake

Example text

In particular, sessile species living in this habitat, whose distributions are often restricted to within a narrow vertical range of several tens of centimeters (Stephenson and Stephenson 1972), might be quite sensitive to land-level changes caused by an earthquake. Indeed, previous studies have demonstrated that earthquake-related uplifts caused mass mortalities of various sessile species and consequently altered rocky intertidal communities at regional scales (Haven 1972; Johansen 1972; Bodin and Klinger 1986; Castilla 1988; Castilla et al.

Thus the impact of these large-scale disturbances on rocky intertidal communities seems larger than the negative impact of the tsunami caused by the megaquake. The tsunami did not have a significant negative impact on sessiles, but it did on mobiles (Fig. 1). This suggests that mobiles are more vulnerable to tsunamis than sessiles on rocky shores. Indeed, in the Alaska earthquake of 1964, populations of mobiles (limpets Acmaea persona and Acmaea digitalis) declined along rocky intertidal shores after the resultant tsunami, whereas the species composition and zonation of rocky intertidal sessile assemblages did not clearly change except in the area of heavy uplift (Haven 1971).

Perforatus. A field survey along the coast of the Japan Sea revealed that this barnacle settled on piers and tetrapods with a large abundance and on shells of various mollusks such as turbo shell Turbo cornutus, rock shell Thais clavigera, and oyster Crassostrea nippona (Kado, unpublished data). According to the monthly monitoring data on sedentary organisms on the Sakihama jetty wall, P. perforatus appeared for the first time on the plates in September 2012 (Kado unpublished data). 2013 From late 2012 to 2013, abundance of the sea urchin on the jetty wall further increased and reached to be more than ten individuals/m2 (Fig.

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