Macro benthic community assemblage before and after the 2007 tsunami and earthquake at Paracas Bay, Peru

Lomovasky, Betina J.; Firstater, Fausto Nahuel; Salazar, Alex Gamarra; Mendo, Jaime; Iribarne, Oscar

doi:10.1016/j.seares.2010.10.002

Cited by 64 publications

(49 citation statements)

References 35 publications

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“…incongrua may reflect changes in sediment characteristics at the study site. As deposit-feeding benthos attain high densities on soft muddy substrates rich in fine organic particles [40, 41], deposition of finer sediment during the post-tsunami period could lead an increase in deposit-feeders, as observed in Paracas Bay, Peru, after a tsunami occurred in 2007 [4]. Salinity is also important for the distribution of mollusk species and increases in intertidal—subtidal species after the earthquake and tsunami may be caused by increased salinity at the study site.…”

Section: Discussionmentioning

confidence: 99%

Structural Changes in Molluscan Community over a 15-Year Period before and after the 2011 Great East Japan Earthquake and Subsequent Tsunami around Matsushima Bay, Miyagi Prefecture, Northeastern Japan

Sato

Chiba

2016

PLoS ONE

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We examined structural changes in the molluscan community for ten years (2001–2010) before and five years (2011–2015) after the 2011 Great East Japan Earthquake and subsequent tsunami around Matsushima Bay, Miyagi Prefecture, northeastern Japan. Before the earthquake and tsunami, Ruditapes philippinarum, Macoma incongrua, Pillucina pisidium, and Batillaria cumingii were dominant, and an alien predator Laguncula pulchella appeared in 2002 and increased in number. After the tsunami, R. philippinarum and M. incongrua populations quickly recovered in 2012, but P. pisidium and B. cumingii populations did not recover until 2015. By contrast, Musculista senhousia, Mya arenaria, Retusa sp., and Solen strictus were found in low densities before the tsunami, but they rapidly increased in abundance/number over five years after the tsunami. These results suggest that the molluscan community on the Tona Coast was drastically changed by the earthquake and tsunami, and some species mainly inhabiting the intertidal—subtidal zone may have increased in number because of land subsidence. We also emphasize that the seawall delayed recovery of the intertidal community after the earthquake and tsunami.

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Section: Discussionmentioning

confidence: 99%

Structural Changes in Molluscan Community over a 15-Year Period before and after the 2011 Great East Japan Earthquake and Subsequent Tsunami around Matsushima Bay, Miyagi Prefecture, Northeastern Japan

Sato

Chiba

2016

PLoS ONE

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“…Lomovasky et al [13] studied the macrobenthic community before and after the 2007 tsunami in Peru and found an increase in the abundance of filter feeders and grazers followed by an increase in predators during the post-tsunami period. In a survey of the benthic community before and after the 2004 tsunami in Thailand [14], the presence of seagrass vegetation altered the temporal variation in macrofaunal assemblages and the subsequent recovery processes following the tsunami.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Coastal Fauna after the 2011 Tsunami in Japan as Determined by Bimonthly Underwater Visual Censuses Conducted over Five Years

Masuda¹,

Hatakeyama²,

Yokoyama³

et al. 2016

PLoS ONE

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Massive tsunamis induce catastrophic disturbance in marine ecosystems, yet they can provide unique opportunities to observe the process of regeneration. Here, we report the recovery of fauna after the 2011 tsunami in northeast Japan based on underwater visual censuses performed every two months over five years. Both total fish abundance and species richness increased from the first to the second year after the tsunami followed by stabilization in the following years. Short-lived fish, such as the banded goby Pterogobius elapoides, were relatively abundant in the first two years, whereas long-lived species, such as the black rockfish Sebastes cheni, increased in the latter half of the survey period. Tropical fish species were recorded only in the second and third years after the tsunami. The body size of long-lived fish increased during the survey period resulting in a gradual increase of total fish biomass. The recovery of fish assemblages was slow at one site located in the inner bay, where the impact of the tsunami was the strongest. Apart from fish, blooms of the moon jellyfish Aurelia sp. occurred only in the first two years after the tsunami, whereas the abundances of sea cucumber Apostichopus japonicus and abalone Haliotis discus hannai increased after the second year. Although we lack quantitative data prior to the tsunami, we conclude that it takes approximately three years for coastal reef fish assemblages to recover from a heavy disturbance such as a tsunami and that the recovery is dependent on species-specific life span and habitat.

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“…Considerable changes in community structure and decreases in abundance and species richness were observed after the huge tsunami associated with the 2004 Indian Ocean earthquake, the 2007 Peru earthquake and the 2010 Chile earthquake (Whanpetch et al 2010;Lomovasky et al 2011;Jaramillo et al 2012). It has been suggested that tsunami have long-lasting effects on coastal ecosystems and that the restoration process is long-standing (Whanpetch et al 2010;Jaramillo et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Immediate impact of the tsunami associated with the 2011 Great East Japan Earthquake on the Plecoglossus altivelis altivelis population from the Sanriku coast of northern Japan

2016

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The huge tsunami associated with the 2011 Great East Japan Earthquake severely impacted the ecosystems on the Sanriku coast of Japan. The life history traits of ayu, Plecoglossus altivelis altivelis, which have a one-year amphidromous life history, were investigated by otolith analyses in two rivers of the Sanriku coast just after the tsunami compared with results before the tsunami to reveal the immediate impact of the tsunami. Hatching date compositions differed between the upstream migrants before and after the tsunami. The migrants after the tsunami were solely composed of fish hatched during October and November, whereas the migrants before the tsunami were mostly composed of fish hatched in September. Discrepancies between the hatching dates of the migrants and drifting larvae (hatched larvae) indicate that selective mortality of early-hatched fish occurred during the tsunami. Differences in otolith Sr:Ca ratios between upstream migrants before and after the tsunami suggest that fish surviving the tsunami inhabited saline water and earlyhatched fish that inhabited the estuary decreased selectively in number because of the severe erosion around the river mouth. The oceanic growth period shortened in accordance with the change in hatching date. These results show that the tsunami drastically altered the ecology of P. altivelis altivelis on the Sanriku coast.

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Macro benthic community assemblage before and after the 2007 tsunami and earthquake at Paracas Bay, Peru

Cited by 64 publications

References 35 publications

Structural Changes in Molluscan Community over a 15-Year Period before and after the 2011 Great East Japan Earthquake and Subsequent Tsunami around Matsushima Bay, Miyagi Prefecture, Northeastern Japan

Structural Changes in Molluscan Community over a 15-Year Period before and after the 2011 Great East Japan Earthquake and Subsequent Tsunami around Matsushima Bay, Miyagi Prefecture, Northeastern Japan

Recovery of Coastal Fauna after the 2011 Tsunami in Japan as Determined by Bimonthly Underwater Visual Censuses Conducted over Five Years

Immediate impact of the tsunami associated with the 2011 Great East Japan Earthquake on the Plecoglossus altivelis altivelis population from the Sanriku coast of northern Japan

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