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On 11 March 2011, a catastrophic earthquake and subsequent tsunami hit the Pacific coast of northern Japan, devastating many of the towns, villages and coastal ecosystems located along the shoreline. To assess the impacts of the disaster, we investigated temporal dynamics of fish and epibenthic megafaunal community structure in relation to changes in a range of physical, biological and anthropogenic variables between 2007 and 2018 in Onagawa Bay. Commercially important fish such as greenlings, Japanese anchovy, flatfishes, rockfishes were consistently abundant in both larval and adult fish assemblages. While abundance, species richness, and Shannon index H’ for adult fish and epibenthic megafaunal assemblages increased significantly soon after the disaster to peak values towards the end of the study period, the same metrics did not change accordingly for larval fish assemblages. Temporal dynamics of larval fish community clearly demonstrated significant seasonal variation along with changes in large-scale environmental conditions such as temperature and nutrients. However, anthropogenic components such as decline in human population, reduction in fishing pressure and the recovery of aquaculture operations significantly explained the observed post-disaster change in adult fish and epibenthic megafaunal communities. The pelagic and benthic components of Onagawa Bay appeared to have responded to the 2011 disaster very differently, and this study suggests the post-disaster recovery and dynamics of the coastal ecosystems may be regulated by how human societies respond to the impacts of a tsunami catastrophe through their influences on benthic habitat of ecosystems.
Toyonobu Fujii; Kenji Kaneko; Yuka Nakamura; Hiroki Murata; Megumi Kuraishi; Akihiro Kijima. Assessment of coastal anthropo-ecological system dynamics in response to a tsunami catastrophe of an unprecedented magnitude encountered in Japan. Science of The Total Environment 2021, 783, 146998 .
AMA StyleToyonobu Fujii, Kenji Kaneko, Yuka Nakamura, Hiroki Murata, Megumi Kuraishi, Akihiro Kijima. Assessment of coastal anthropo-ecological system dynamics in response to a tsunami catastrophe of an unprecedented magnitude encountered in Japan. Science of The Total Environment. 2021; 783 ():146998.
Chicago/Turabian StyleToyonobu Fujii; Kenji Kaneko; Yuka Nakamura; Hiroki Murata; Megumi Kuraishi; Akihiro Kijima. 2021. "Assessment of coastal anthropo-ecological system dynamics in response to a tsunami catastrophe of an unprecedented magnitude encountered in Japan." Science of The Total Environment 783, no. : 146998.
Editorial: Seafloor Heterogeneity: Artificial Structures and Marine Ecosystem Dynamics
Toyonobu Fujii; Daniel J. Ii Pondella; Victoria Todd; Andrew Guerin. Editorial: Seafloor Heterogeneity: Artificial Structures and Marine Ecosystem Dynamics. Frontiers in Marine Science 2020, 7, 1 .
AMA StyleToyonobu Fujii, Daniel J. Ii Pondella, Victoria Todd, Andrew Guerin. Editorial: Seafloor Heterogeneity: Artificial Structures and Marine Ecosystem Dynamics. Frontiers in Marine Science. 2020; 7 ():1.
Chicago/Turabian StyleToyonobu Fujii; Daniel J. Ii Pondella; Victoria Todd; Andrew Guerin. 2020. "Editorial: Seafloor Heterogeneity: Artificial Structures and Marine Ecosystem Dynamics." Frontiers in Marine Science 7, no. : 1.
The 2011 Great East Japan Earthquake and tsunami wiped out over 1200 shellfish and ascidian culture long-lines and ∼120 salmon farm cages that comprised the entire aquaculture installations in Onagawa Bay, Japan, and severely altered the associated ecosystem. A year later, we launched a coordinated monitoring program to measure the extent of the damage caused by the disaster and monitor the change in the state of the marine ecosystem. As part of this effort, we conducted multi-seasonal sampling to characterize spatio-temporal variation in benthic macrofaunal community and a range of environmental parameters across Onagawa Bay between March 2012 and January 2018. The 492 total macrofaunal species recorded included Polychaeta (38.8%), Bivalvia (13.2%), Amphipoda (10.8%), Decapoda (9.6%), Gastropoda (9.3%), and Echinodermata (4.3%). At the outermost reference site, macrofaunal abundance, biomass, and species diversity were all consistently high throughout the study period. Inside Onagawa Bay, macrofauna metrics increased steadily from the lowest values at the beginning of the study to the highest over time. During the same period, the spatial extent of aquaculture facilities for long-lines and fish cages recovered steadily to within 60.8% and 74.8% of the original state, respectively. The significant variables identified by multivariate analysis to explain spatio-temporal variability in benthic macrofaunal communities were: (1) proximity to the nearest aquaculture facilities; (2) wind fetch length (exposure); (3) sediment grain size; and (4) the total area of aquaculture facilities. This study suggests that coastal aquaculture operations may strongly influence the occurrence and distribution of benthic macrofaunal communities and thereby influence the recovery of seafloor biota at ecosystem scales following a catastrophic natural disaster.
Toyonobu Fujii; Kenji Kaneko; Hiroki Murata; Chinatsu Yonezawa; Ayu Katayama; Megumi Kuraishi; Yuka Nakamura; Daisuke Takahashi; Yasushi Gomi; Hiroya Abe; Akihiro Kijima. Spatio-Temporal Dynamics of Benthic Macrofaunal Communities in Relation to the Recovery of Coastal Aquaculture Operations Following the 2011 Great East Japan Earthquake and Tsunami. Frontiers in Marine Science 2019, 5, 1 .
AMA StyleToyonobu Fujii, Kenji Kaneko, Hiroki Murata, Chinatsu Yonezawa, Ayu Katayama, Megumi Kuraishi, Yuka Nakamura, Daisuke Takahashi, Yasushi Gomi, Hiroya Abe, Akihiro Kijima. Spatio-Temporal Dynamics of Benthic Macrofaunal Communities in Relation to the Recovery of Coastal Aquaculture Operations Following the 2011 Great East Japan Earthquake and Tsunami. Frontiers in Marine Science. 2019; 5 ():1.
Chicago/Turabian StyleToyonobu Fujii; Kenji Kaneko; Hiroki Murata; Chinatsu Yonezawa; Ayu Katayama; Megumi Kuraishi; Yuka Nakamura; Daisuke Takahashi; Yasushi Gomi; Hiroya Abe; Akihiro Kijima. 2019. "Spatio-Temporal Dynamics of Benthic Macrofaunal Communities in Relation to the Recovery of Coastal Aquaculture Operations Following the 2011 Great East Japan Earthquake and Tsunami." Frontiers in Marine Science 5, no. : 1.
Toyonobu Fujii; Kenji Kaneko; Megumi Kuraishi; Yuka Nakamura; Akihiro Kijima. Development of a marine habitat map for Onagawa Bay: How to take account of the spatiotemporal dynamics of the whole coastal ecosystem. NIPPON SUISAN GAKKAISHI 2018, 84, 1066 -1069.
AMA StyleToyonobu Fujii, Kenji Kaneko, Megumi Kuraishi, Yuka Nakamura, Akihiro Kijima. Development of a marine habitat map for Onagawa Bay: How to take account of the spatiotemporal dynamics of the whole coastal ecosystem. NIPPON SUISAN GAKKAISHI. 2018; 84 (6):1066-1069.
Chicago/Turabian StyleToyonobu Fujii; Kenji Kaneko; Megumi Kuraishi; Yuka Nakamura; Akihiro Kijima. 2018. "Development of a marine habitat map for Onagawa Bay: How to take account of the spatiotemporal dynamics of the whole coastal ecosystem." NIPPON SUISAN GAKKAISHI 84, no. 6: 1066-1069.
Kenji Kaneko; Daisuke Takahashi; Yasushi Gomi; Michihiro Syoji; Hiroya Abe; Toyonobu Fujii; Ayu Katayama; Toshiyasu Yamaguchi; Akihiro Kijima. Impact of the 2011 Tohoku Earthquake and tsunami on the state of seafloor sediment and benthic macrofauna and their recovery process in Onagawa Bay. NIPPON SUISAN GAKKAISHI 2018, 84, 909 -912.
AMA StyleKenji Kaneko, Daisuke Takahashi, Yasushi Gomi, Michihiro Syoji, Hiroya Abe, Toyonobu Fujii, Ayu Katayama, Toshiyasu Yamaguchi, Akihiro Kijima. Impact of the 2011 Tohoku Earthquake and tsunami on the state of seafloor sediment and benthic macrofauna and their recovery process in Onagawa Bay. NIPPON SUISAN GAKKAISHI. 2018; 84 (5):909-912.
Chicago/Turabian StyleKenji Kaneko; Daisuke Takahashi; Yasushi Gomi; Michihiro Syoji; Hiroya Abe; Toyonobu Fujii; Ayu Katayama; Toshiyasu Yamaguchi; Akihiro Kijima. 2018. "Impact of the 2011 Tohoku Earthquake and tsunami on the state of seafloor sediment and benthic macrofauna and their recovery process in Onagawa Bay." NIPPON SUISAN GAKKAISHI 84, no. 5: 909-912.
Ayu Katayama; Kenji Kaneko; Hiroya Abe; Toyonobu Fujii; Masazumi Nishikawa; Akihiro Kijima. Food source for major aquaculture animals estimated from stable isotope analysis in Onagawa Bay. NIPPON SUISAN GAKKAISHI 2018, 84, 913 -916.
AMA StyleAyu Katayama, Kenji Kaneko, Hiroya Abe, Toyonobu Fujii, Masazumi Nishikawa, Akihiro Kijima. Food source for major aquaculture animals estimated from stable isotope analysis in Onagawa Bay. NIPPON SUISAN GAKKAISHI. 2018; 84 (5):913-916.
Chicago/Turabian StyleAyu Katayama; Kenji Kaneko; Hiroya Abe; Toyonobu Fujii; Masazumi Nishikawa; Akihiro Kijima. 2018. "Food source for major aquaculture animals estimated from stable isotope analysis in Onagawa Bay." NIPPON SUISAN GAKKAISHI 84, no. 5: 913-916.
T.D. Linley; A.L. Stewart; P.J. McMillan; M.R. Clark; M.E. Gerringer; Jeffrey Drazen; Toyonobu Fujii; A.J. Jamieson. Bait attending fishes of the abyssal zone and hadal boundary: Community structure, functional groups and species distribution in the Kermadec, New Hebrides and Mariana trenches. Deep Sea Research Part I: Oceanographic Research Papers 2017, 121, 38 -53.
AMA StyleT.D. Linley, A.L. Stewart, P.J. McMillan, M.R. Clark, M.E. Gerringer, Jeffrey Drazen, Toyonobu Fujii, A.J. Jamieson. Bait attending fishes of the abyssal zone and hadal boundary: Community structure, functional groups and species distribution in the Kermadec, New Hebrides and Mariana trenches. Deep Sea Research Part I: Oceanographic Research Papers. 2017; 121 ():38-53.
Chicago/Turabian StyleT.D. Linley; A.L. Stewart; P.J. McMillan; M.R. Clark; M.E. Gerringer; Jeffrey Drazen; Toyonobu Fujii; A.J. Jamieson. 2017. "Bait attending fishes of the abyssal zone and hadal boundary: Community structure, functional groups and species distribution in the Kermadec, New Hebrides and Mariana trenches." Deep Sea Research Part I: Oceanographic Research Papers 121, no. : 38-53.
The legacy and reach of anthropogenic influence is most clearly evidenced by its impact on the most remote and inaccessible habitats on Earth. Here we identify extraordinary levels of persistent organic pollutants in the endemic amphipod fauna from two of the deepest ocean trenches (>10,000 metres). Contaminant levels were considerably higher than documented for nearby regions of heavy industrialization, indicating bioaccumulation of anthropogenic contamination and inferring that these pollutants are pervasive across the world’s oceans and to full ocean depth.
Alan J. Jamieson; Tamas Malkocs; Stuart B. Piertney; Toyonobu Fujii; Zulin Zhang. Bioaccumulation of persistent organic pollutants in the deepest ocean fauna. Nature Ecology & Evolution 2017, 1, 0051 .
AMA StyleAlan J. Jamieson, Tamas Malkocs, Stuart B. Piertney, Toyonobu Fujii, Zulin Zhang. Bioaccumulation of persistent organic pollutants in the deepest ocean fauna. Nature Ecology & Evolution. 2017; 1 (3):0051.
Chicago/Turabian StyleAlan J. Jamieson; Tamas Malkocs; Stuart B. Piertney; Toyonobu Fujii; Zulin Zhang. 2017. "Bioaccumulation of persistent organic pollutants in the deepest ocean fauna." Nature Ecology & Evolution 1, no. 3: 0051.
Acknowledgements The authors would like to thank OSPAR for providing data for offshore structures in the North Sea, and Imants G. Priede (University of Aberdeen), Stewart Chalmers (University of Aberdeen), John Polanski (University of Aberdeen), Thomas O’Donoghue (University of Aberdeen), and Michelle Horsfield (BP), Anne Walls (BP), Peter Evans (BP), Alwyn Mcleary (BP) and all the crew members of the Miller platform for invaluable advice and support in conducting this research project. This work was coordinated by Oceanlab, University of Aberdeen and supported by the BP Fellowship in Applied Fisheries Programme.Peer reviewedPublisher PD
Toyonobu Fujii; Alan J. Jamieson. Fine-scale monitoring of fish movements and multiple environmental parameters around a decommissioned offshore oil platform: A pilot study in the North Sea. Ocean Engineering 2016, 126, 481 -487.
AMA StyleToyonobu Fujii, Alan J. Jamieson. Fine-scale monitoring of fish movements and multiple environmental parameters around a decommissioned offshore oil platform: A pilot study in the North Sea. Ocean Engineering. 2016; 126 ():481-487.
Chicago/Turabian StyleToyonobu Fujii; Alan J. Jamieson. 2016. "Fine-scale monitoring of fish movements and multiple environmental parameters around a decommissioned offshore oil platform: A pilot study in the North Sea." Ocean Engineering 126, no. : 481-487.
T Fujii. Potential influence of offshore oil and gas platforms on the feeding ecology of fish assemblages in the North Sea. Marine Ecology Progress Series 2016, 542, 167 -186.
AMA StyleT Fujii. Potential influence of offshore oil and gas platforms on the feeding ecology of fish assemblages in the North Sea. Marine Ecology Progress Series. 2016; 542 ():167-186.
Chicago/Turabian StyleT Fujii. 2016. "Potential influence of offshore oil and gas platforms on the feeding ecology of fish assemblages in the North Sea." Marine Ecology Progress Series 542, no. : 167-186.
We have developed a visualized 3-D model of a City Sustainability Index (CSI) based on our original concept of city sustainability in which a sustainable city is defined as one that maximizes socio-economic benefits while meeting constraint conditions of the environment and socio-economic equity on a permanent basis. The CSI is based on constraint and maximization indicators. Constraint indicators assess whether a city meets the necessary minimum conditions for city sustainability. Maximization indicators measure the benefits that a city generates in socio-economic aspects. When used in the policy-making process, the choice of constraint indicators should be implemented using a top-down approach. In contrast, a bottom-up approach is more suitable for defining maximization indicators because this technique involves multiple stakeholders (in a transdisciplinary approach). Using different materials of various colors, shapes, sizes, we designed and constructed the visualized physical model of the CSI to help people evaluate and compare the performance of different cities in terms of sustainability. The visualized model of the CSI can convey complicated information in a simple and straightforward manner to diverse stakeholders so that the sustainability analysis can be understood intuitively by ordinary citizens as well as experts. Thus, the CSI model helps stakeholders to develop critical thinking about city sustainability and enables policymakers to make informed decisions for sustainability through a transdisciplinary approach.
Koichiro Mori; Toyonobu Fujii; Tsuguta Yamashita; Yutaka Mimura; Yuta Uchiyama; Kengo Hayashi. Visualization of a City Sustainability Index (CSI): Towards Transdisciplinary Approaches Involving Multiple Stakeholders. Sustainability 2015, 7, 12402 -12424.
AMA StyleKoichiro Mori, Toyonobu Fujii, Tsuguta Yamashita, Yutaka Mimura, Yuta Uchiyama, Kengo Hayashi. Visualization of a City Sustainability Index (CSI): Towards Transdisciplinary Approaches Involving Multiple Stakeholders. Sustainability. 2015; 7 (9):12402-12424.
Chicago/Turabian StyleKoichiro Mori; Toyonobu Fujii; Tsuguta Yamashita; Yutaka Mimura; Yuta Uchiyama; Kengo Hayashi. 2015. "Visualization of a City Sustainability Index (CSI): Towards Transdisciplinary Approaches Involving Multiple Stakeholders." Sustainability 7, no. 9: 12402-12424.
This study reports temporal variations in the environmental conditions and the structure of fish assemblages observed in the vicinity of an offshore oil platform and the surrounding seafloor in the North Sea. Multi-seasonal sampling was conducted at a typical large steel jacketed facility, using mid-water fish traps at three different depths (i.e., 10, 50 & 100 m). Commercially important gadoids such as saithe Pollachius virens, haddock Melanogrammus aeglefinus and cod Gadus morhua were the most abundant species, however, the species composition and the relative abundances of the species varied with depth, season and between years. Comparisons with a large-scale bottom trawl survey data suggested highly dynamic and species-specific interactions between fish movements, changing environmental conditions and the physical presence of an offshore platform. Given the number of platforms currently installed across the North Sea, there is a need to identify biological mechanisms behind such dynamic interactions.
Toyonobu Fujii. Temporal variation in environmental conditions and the structure of fish assemblages around an offshore oil platform in the North Sea. Marine Environmental Research 2015, 108, 69 -82.
AMA StyleToyonobu Fujii. Temporal variation in environmental conditions and the structure of fish assemblages around an offshore oil platform in the North Sea. Marine Environmental Research. 2015; 108 ():69-82.
Chicago/Turabian StyleToyonobu Fujii. 2015. "Temporal variation in environmental conditions and the structure of fish assemblages around an offshore oil platform in the North Sea." Marine Environmental Research 108, no. : 69-82.
Understanding the utilisation of seafloor heterogeneity by different fish species is an essential prerequisite for the implementation of effective spatial management of marine ecosystems. The North Sea has long been a vital ground for the exploitation of natural resources, supporting one of the world’s most active fisheries as well as oil and gas exploration which has resulted in the construction of over 500 offshore platforms across the region. These facilities represent the major man-made structures installed on the seabed, adding substantial components of seafloor heterogeneity to the normally flat, featureless or soft sedimentary surroundings. While there is a growing body of evidence demonstrating that a variety of fishes aggregate around these subsea features, it still remains unclear whether the fish individuals merely concentrate around the structures from surrounding areas or whether such effects can have beneficial effects for fisheries by facilitating net increase in fish stock sizes. The research presented here investigates the relationship between fish and the physical presence of artificial structures in order to elucidate the potential role of offshore oil and gas platforms in the ecology of fish populations in the North Sea. To capture representative fish specimens closely associated with offshore platforms, seasonal fish sampling has been carried out since September 2010 at the BP Miller platform, a large steel jacketed facility in the Central North Sea. Although fishing from an operational platform is normally banned in the North Sea due to safety concerns, the Miller platform provides a unique opportunity for researcher to examine the possible effects of obsolete platforms on fish populations because it ceased production in 2007 and has since been used as a search and rescue helicopter base with minimum manning. Results show that commercially important fish such as cod (Gadus morhua), haddock (Melanogrammus aeglefinus) and saithe (Pollachius virens) were the most characteristic species observed around Miller platform. However, there were marked changes in species composition and their relative abundances between seasons as well as years, suggesting highly dynamic nature of interactions between fish movements and the physical presence of the platform. Based on these results together with a range of studies from the relevant literature, implications for the ecological impacts of decommissioning on North Sea fish populations will be discussed.
Toyonobu Fujii; Anne Walls; Michelle Horsfield. Is There a Net Benefit from Offshore Structures? Day 1 Mon, March 17, 2014 2014, 1 .
AMA StyleToyonobu Fujii, Anne Walls, Michelle Horsfield. Is There a Net Benefit from Offshore Structures? Day 1 Mon, March 17, 2014. 2014; ():1.
Chicago/Turabian StyleToyonobu Fujii; Anne Walls; Michelle Horsfield. 2014. "Is There a Net Benefit from Offshore Structures?" Day 1 Mon, March 17, 2014 , no. : 1.
The work was supported by the UK Natural Environment Research Council (Consortium Grant no. NE/C512961/1) and the Census of Marine Life.The ECOMAR project investigated photosynthetically-supported life on the North Mid-Atlantic Ridge (MAR) between the Azores and Iceland focussing on the Charlie-Gibbs Fracture Zone area in the vicinity of the sub-polar front where the North Atlantic Current crosses the MAR. Repeat visits were made to four stations at 2500. m depth on the flanks of the MAR in the years 2007-2010; a pair of northern stations at 54°N in cold water north of the sub-polar front and southern stations at 49°N in warmer water influenced by eddies from the North Atlantic Current. At each station an instrumented mooring was deployed with current meters and sediment traps (100 and 1000. m above the sea floor) to sample downward flux of particulate matter. The patterns of water flow, fronts, primary production and export flux in the region were studied by a combination of remote sensing and in situ measurements. Sonar, tow nets and profilers sampled pelagic fauna over the MAR. Swath bathymetry surveys across the ridge revealed sediment-covered flat terraces parallel to the axis of the MAR with intervening steep rocky slopes. Otter trawls, megacores, baited traps and a suite of tools carried by the R.O.V. Isis including push cores, grabs and a suction device collected benthic fauna. Video and photo surveys were also conducted using the SHRIMP towed vehicle and the R.O.V. Isis. Additional surveying and sampling by landers and R.O.V. focussed on the summit of a seamount (48°44'N, 28°10'W) on the western crest of the MAR between the two southern stations.Publisher PDFPeer reviewe
Imants Priede; David S.M. Billett; Andrew Brierley; A. Rus Hoelzel; Mark Inall; Peter Miller; Nicola J. Cousins; Mark A. Shields; Toyonobu Fujii. The ecosystem of the Mid-Atlantic Ridge at the sub-polar front and Charlie–Gibbs Fracture Zone; ECO-MAR project strategy and description of the sampling programme 2007–2010. Deep Sea Research Part II: Topical Studies in Oceanography 2013, 98, 220 -230.
AMA StyleImants Priede, David S.M. Billett, Andrew Brierley, A. Rus Hoelzel, Mark Inall, Peter Miller, Nicola J. Cousins, Mark A. Shields, Toyonobu Fujii. The ecosystem of the Mid-Atlantic Ridge at the sub-polar front and Charlie–Gibbs Fracture Zone; ECO-MAR project strategy and description of the sampling programme 2007–2010. Deep Sea Research Part II: Topical Studies in Oceanography. 2013; 98 ():220-230.
Chicago/Turabian StyleImants Priede; David S.M. Billett; Andrew Brierley; A. Rus Hoelzel; Mark Inall; Peter Miller; Nicola J. Cousins; Mark A. Shields; Toyonobu Fujii. 2013. "The ecosystem of the Mid-Atlantic Ridge at the sub-polar front and Charlie–Gibbs Fracture Zone; ECO-MAR project strategy and description of the sampling programme 2007–2010." Deep Sea Research Part II: Topical Studies in Oceanography 98, no. : 220-230.
T Fujii; Nm Kilgallen; Ashley Rowden; Aj Jamieson. Deep-sea amphipod community structure across abyssal to hadal depths in the Peru-Chile and Kermadec trenches. Marine Ecology Progress Series 2013, 492, 125 -138.
AMA StyleT Fujii, Nm Kilgallen, Ashley Rowden, Aj Jamieson. Deep-sea amphipod community structure across abyssal to hadal depths in the Peru-Chile and Kermadec trenches. Marine Ecology Progress Series. 2013; 492 ():125-138.
Chicago/Turabian StyleT Fujii; Nm Kilgallen; Ashley Rowden; Aj Jamieson. 2013. "Deep-sea amphipod community structure across abyssal to hadal depths in the Peru-Chile and Kermadec trenches." Marine Ecology Progress Series 492, no. : 125-138.
In many European estuaries, extensive areas of intertidal habitats consist of bare mudflats and sandflats that harbour a very high abundance and biomass of macrobenthic invertebrates. The high stocks of macrobenthos in turn provide important food sources for the higher trophic levels such as fish and shorebirds. Climate change and associated sea-level rise will have potential to cause changes in coastal and estuarine physical properties in a number of ways and thereby influence the ecology of estuarine dependent organisms. Although the mechanisms involved in biological responses resulting from such environmental changes are complex, the ecological effects are likely to be significant for the estuarine benthic macrofauna and hence the consumers they support. This paper reviews the utilisation patterns of estuarine intertidal habitats by shorebirds, fish and crustaceans, as well as factors affecting the distribution, abundance and biomass of estuarine macrobenthos that is known to be important food source for these estuarine predators. This study also provides simple conceptual models of the likely impacts of sea-level rise on the physical and biological elements of estuarine intertidal habitats, and implications of these results are discussed in the context of sustainable long term flood and coastal management in estuarine environments.
Toyonobu Fujii. Climate Change, Sea-Level Rise and Implications for Coastal and Estuarine Shoreline Management with Particular Reference to the Ecology of Intertidal Benthic Macrofauna in NW Europe. Biology 2012, 1, 597 -616.
AMA StyleToyonobu Fujii. Climate Change, Sea-Level Rise and Implications for Coastal and Estuarine Shoreline Management with Particular Reference to the Ecology of Intertidal Benthic Macrofauna in NW Europe. Biology. 2012; 1 (3):597-616.
Chicago/Turabian StyleToyonobu Fujii. 2012. "Climate Change, Sea-Level Rise and Implications for Coastal and Estuarine Shoreline Management with Particular Reference to the Ecology of Intertidal Benthic Macrofauna in NW Europe." Biology 1, no. 3: 597-616.
SUMMARY Benthic fauna in the hadal zone (6500-11,000 m) rely on maintaining sufficient locomotory activity to exploit a low, patchy and uniquely distributed food supply while exposed to high pressure, low temperatures and responding to predator-prey interactions. Very little is currently known about the locomotory capabilities of hadal fauna. In situ video footage of the isopod Rectisura cf. herculea (Birstein 1957) (Asellota, Munnopsidae) was obtained from 6945 and 7703 m deep in the Japan Trench (NW Pacific Ocean). Measurements of locomotion revealed routine walking speeds of 0.19±0.04 BL s-1 (mean ± s.d.), increasing to 0.33±0.04 BL s-1 if naturally perturbed by larger organisms. When immediately threatened by the presence of predators (decapod crustaceans), the isopods are capable of eliciting backward escape jumps and burst swimming escape responses of 2.6±1.5 BL s-1 and 4.63±0.9 BL s-1, respectively. These data suggest no significant reduction in locomotory capability despite the extreme depths in which they inhabit. These observations also revealed the isopod to be a bait-attending and aggregative species and suggest that it may not be obligatorily selecting infaunal food sources as previously thought.
Alan J. Jamieson; Toyonobu Fujii; Imants Priede. Locomotory activity and feeding strategy of the hadal munnopsid isopod Rectisura cf. herculea (Crustacea: Asellota) in the Japan Trench. Journal of Experimental Biology 2012, 215, 3010 -3017.
AMA StyleAlan J. Jamieson, Toyonobu Fujii, Imants Priede. Locomotory activity and feeding strategy of the hadal munnopsid isopod Rectisura cf. herculea (Crustacea: Asellota) in the Japan Trench. Journal of Experimental Biology. 2012; 215 (17):3010-3017.
Chicago/Turabian StyleAlan J. Jamieson; Toyonobu Fujii; Imants Priede. 2012. "Locomotory activity and feeding strategy of the hadal munnopsid isopod Rectisura cf. herculea (Crustacea: Asellota) in the Japan Trench." Journal of Experimental Biology 215, no. 17: 3010-3017.
7 pages, 3 figures, 1 table, supplementary material http://www.int-res.com/articles/suppl/m458p247_supp/The deep sea is a low food input environment, hence large food falls from the surface waters are important in suppor ting a wealth of scavenging deep-sea fauna. The pr obability of observing such events is ver y low, due to their unpr edictable and short-lived nature. The video system of a cabled obser vatory installed within a cold seep clam field in Sagami Bay (1100 m depth; Central Japan) recorded a rare event. We observed a fish dying directly in front of the cam era and being immediately perceived and preyed upon by Buccinum yoroianum (Neo gastropoda: Buccinidae), while still alive. Up to 76 large snails responded to the fish and consumed the carcass within ∼8 h, with no inter vention by decapod crustaceans. There was only small par ticipation of eelpouts (Zoarcidae). For comparison, we report on supplementary findings from a different area and depth of the Pacific Ocean. These obser vations were recorded by a baited camera lander which simulated a food fall. W ithin 6 h, the buccinid Tacita zenkevitchi aggregated on the bait, competing with fishes. These observations confirm that deep-sea buccinids can shift their feeding behaviour between active pr edation and scavenging. Our perception, however, seems condi tioned by the observational methodology we use: buccinids may appear as scavengers when using photography (e.g. by baited landers) pr oducing single snapshots in time, or as pr edators when observed in a natural setting and video-taped continuously with a cabled observatory. © Inter-Research 2012The lander work and A.J.J. were supported by the Nippon Foundation (Japan) and the Marine Alliance for Science and Technology, Scotland (MASTS). Sagami video material was re trieved and analyzed in the context of the RITFIM Project (CTM2010-16274), funded by the Spanish Ministry for Science and Innovation (MICINN). J. Aguzzi is a Ramón y Cajal Program (MICINN) Postdoctoral FellowPeer Reviewe
J Aguzzi; Aj Jamieson; T Fujii; V Sbragaglia; Corrado Costa; Paolo Menesatti; Y Fujiwara. Shifting feeding behaviour of deep-sea buccinid gastropods at natural and simulated food falls. Marine Ecology Progress Series 2012, 458, 247 -253.
AMA StyleJ Aguzzi, Aj Jamieson, T Fujii, V Sbragaglia, Corrado Costa, Paolo Menesatti, Y Fujiwara. Shifting feeding behaviour of deep-sea buccinid gastropods at natural and simulated food falls. Marine Ecology Progress Series. 2012; 458 ():247-253.
Chicago/Turabian StyleJ Aguzzi; Aj Jamieson; T Fujii; V Sbragaglia; Corrado Costa; Paolo Menesatti; Y Fujiwara. 2012. "Shifting feeding behaviour of deep-sea buccinid gastropods at natural and simulated food falls." Marine Ecology Progress Series 458, no. : 247-253.
Holothuroidea represent the dominant benthic megafauna in hadal trenches (~6,000–11,000 m), but little is known about their behaviour and functional role at such depths. Using a time-lapse camera at 8,074 m in the Peru–Chile Trench (SE Pacific Ocean), we provide the first in situ observations of locomotory activity for the elasipodid holothurian Elpidia atakama Belyaev in Shirshov Inst Oceanol 92:326–367, (1971). Time-lapse sequences reveal ‘run and mill’ behaviour whereby bouts of feeding activity are interspersed by periods of locomotion. Over the total observation period (20 h 25 min), we observed a mean (±SD) locomotion speed of 7.0 ± 5.7 BL h−1, but this increased to 10.9 ± 7.2 BL h−1 during active relocation and reduced to 4.8 ± 2.9 BL h−1 during feeding. These observations show E. atakama translocates and processes sediment at rates comparable to shallower species despite extreme hydrostatic pressure and remoteness from surface-derived food.
A. J. Jamieson; A. Gebruk; T. Fujii; Martin Solan. Functional effects of the hadal sea cucumber Elpidia atakama (Echinodermata: Holothuroidea, Elasipodida) reflect small-scale patterns of resource availability. Marine Biology 2011, 158, 2695 -2703.
AMA StyleA. J. Jamieson, A. Gebruk, T. Fujii, Martin Solan. Functional effects of the hadal sea cucumber Elpidia atakama (Echinodermata: Holothuroidea, Elasipodida) reflect small-scale patterns of resource availability. Marine Biology. 2011; 158 (12):2695-2703.
Chicago/Turabian StyleA. J. Jamieson; A. Gebruk; T. Fujii; Martin Solan. 2011. "Functional effects of the hadal sea cucumber Elpidia atakama (Echinodermata: Holothuroidea, Elasipodida) reflect small-scale patterns of resource availability." Marine Biology 158, no. 12: 2695-2703.
A scavenging interaction between the arrow tooth eel Synaphobranchus kaupii and the Portuguese dogfish Centroscymnus coelolepis, both ubiquitous components of fish assemblages at bathyal depths, was observed. Using a baited camera between 1297 and 2453 m in the eastern Atlantic Ocean continental slope, it was shown that despite consistently rapid arrival times of S. kaupii (2 h before feeding, thus contradicting conventional scavenging assumptions in the presence of a food fall.
A. J. Jamieson; T. Fujii; P. M. Bagley; I. G. Priede. Scavenging interactions between the arrow tooth eel Synaphobranchus kaupii and the Portuguese dogfish Centroscymnus coelolepis. Journal of Fish Biology 2011, 79, 205 -216.
AMA StyleA. J. Jamieson, T. Fujii, P. M. Bagley, I. G. Priede. Scavenging interactions between the arrow tooth eel Synaphobranchus kaupii and the Portuguese dogfish Centroscymnus coelolepis. Journal of Fish Biology. 2011; 79 (1):205-216.
Chicago/Turabian StyleA. J. Jamieson; T. Fujii; P. M. Bagley; I. G. Priede. 2011. "Scavenging interactions between the arrow tooth eel Synaphobranchus kaupii and the Portuguese dogfish Centroscymnus coelolepis." Journal of Fish Biology 79, no. 1: 205-216.