scholarly journals Field Observation to evaluate Function of Yatsu Tidal Flat in Nutrients Budget of Tokyo Bay in Autumn

2008 ◽  
Vol 55 ◽  
pp. 1126-1130
Author(s):  
Asami WADA ◽  
Ryota OSHIRO ◽  
Yukio KOIBUCHI ◽  
Shinji SATO ◽  
Masahiko ISOBE
Keyword(s):  
Tidal Flat ◽  
Field Observation ◽  
Tokyo Bay

Utilization of Adaptive Management Technique for Restoration of Large-Scale Tidal Flat in Tokyo Bay

2010 ◽  
Author(s):  
Tetsuo Ohmura ◽  
Yoichi Arai ◽  
Takeo Kondo ◽  
Yasushi Hosokawa
Keyword(s):  
Adaptive Management ◽  
Tidal Flat ◽  
Large Scale ◽  
Tokyo Bay ◽  
Management Technique ◽  
Shallow Sea ◽  
Systematic Observation ◽  
Technical Approach ◽  
Technical Problems

This paper proposes that the pilot field be created to apply the Adaptive Management Technique in order to promote the policy of large-scale restoration of the tidal flat/shallow sea. It will be a case study in Tokyo Bay, a major enclosed urban sea in Japan. The motif and background of the study are stated in the beginning. Creation of the symbiotic structure with marine life, of which the artificial tidal flat is a representative example, is more and more in need as a new direction of port environmental policymaking. This paper discusses that the creation of large-scale tidal flat will be especially effective in Tokyo Bay, a highly reclaimed and enclosed sea and that an innovative technical approach is necessary in view of the long-term efforts. First, an artificial tidal flat built in the past, Itsukaichi Area Artificial Tidal Flat in Hiroshima Prefecture, was analyzed to identify its technical problems. Based on what occurred in this case, the need for a new technical approach to practice the Adaptive Management Technique is discussed. Secondly, Tokyo Bay is taken up as a case study. With the ultimate goal of restoring the tidal flat/shallow sea on a large-scale, it is proposed that small pilot fields be created in the Bay and that the Adaptive Management Technique be applied. Technical and social problems will be addressed step by step in the pilot field, which will be gradually expanded. They are open experimental fields, where systematic observation will be conducted. Technically appropriate structure of the tidal flat will be assessed. The pilot field will also be a forum where consent and support of those concerned including citizens and non-specialists is sought. Furthermore, “Shiosai no Nagisa,” an artificial tidal flat with a reinforced seawall in Port of Yokohama is examined from the viewpoint of the Adaptive Management Technique. It was built by Kanto Regional Bureau of Ministry of Land, Infrastructure, Transport & Tourism in 2008.

scholarly journals Field Observation of Sediment Transport Process off Shallow Coast with Tidal Flat

2009 ◽  
Vol 65 (1) ◽  
pp. 471-475
Author(s):  
Yasuyuki NAKAGAWA ◽  
Kuniro ISHINUKI ◽  
Hiroshi SOEDA ◽  
Yoshikuni NAKAMURA
Keyword(s):  
Sediment Transport ◽  
Tidal Flat ◽  
Field Observation ◽  
Transport Process

scholarly journals FIELD OBSERVATION OF NATURALAND ARTIFICIAL SPAWNING SITES OF HORSESHOE CRAB TACHYPLEUS TRIDENTATUS ON SONE TIDAL FLAT IN KITA-KYUSHU CITY

2000 ◽  
Vol 16 ◽  
pp. 333-338
Author(s):  
Satoquo SEINO ◽  
Takaaki UDA ◽  
Yasufumi TSUCHIYA ◽  
Shu-ichi MAMA ◽  
Nobuo YAMADA ◽  
...  
Keyword(s):  
Tidal Flat ◽  
Field Observation ◽  
Horseshoe Crab ◽  
Tachypleus Tridentatus ◽  
Spawning Sites

scholarly journals Description of Mariniphaga anaerophila gen. nov., sp. nov., a facultatively aerobic marine bacterium isolated from tidal flat sediment, reclassification of the Draconibacteriaceae as a later heterotypic synonym of the Prolixibacteraceae and description of the family Marinifilaceae fam. nov.

2014 ◽  
Vol 64 (Pt_11) ◽  
pp. 3660-3667 ◽  
Author(s):  
Takao Iino ◽  
Koji Mori ◽  
Takashi Itoh ◽  
Takuji Kudo ◽  
Ken-ichiro Suzuki ◽  
...  
Keyword(s):  
Tidal Flat ◽  
Sequence Similarity ◽  
Soluble Starch ◽  
Tokyo Bay ◽  
Phylogenetic Position ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
Tidal Flat Sediment ◽  
The Family

A mesophilic, chemoheterotrophic bacterium, strain Fu11-5T, was isolated from tidal-flat sediment from Tokyo Bay, Chiba, Japan. Cells of strain Fu11-5T were facultatively aerobic, Gram-negative, non-sporulating, non-motile and rod-shaped (1.9–6.9 µm long). Strain Fu11-5T grew optimally at 35–37 °C and pH 6.5–7.0 and with 1–2 % (w/v) NaCl. Oxygen and l-cysteine were used as an alternative electron acceptor and donor, respectively. Strain Fu11-5T also grew fermentatively on some pentoses, hexoses and disaccharides and soluble starch. Succinic acid was the major end product from d-glucose. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain Fu11-5T was affiliated with the order Bacteroidales , and its nearest neighbours were members of the genera Meniscus , Prolixibacter , Sunxiuqinia , Mangrovibacterium and Draconibacterium, with 87–91 % sequence similarity. Cell morphology, optimum growth temperature and utilization of sugars of strain Fu11-5T distinguished the strain from phylogenetically related bacteria. On the basis of its phenotypic features and phylogenetic position, a novel genus and species are proposed to accommodate strain Fu11-5T, with the name Mariniphaga anaerophila gen. nov., sp. nov. The type strain of Mariniphaga anaerophila is strain Fu11-5T ( = JCM 18693T = NBRC 109408T = DSM 26910T). We also propose to combine the family Draconibacteriaceae into the family Prolixibacteraceae as a later heterotypic synonym and to place the distinct sublineage of the genus Marinifilum in the family Marinifilaceae fam. nov.

scholarly journals LONG-TERM SHORELINE CHANGES ON MARGINAL COAST OF TIDAL FLAT IN TOKYO BAY AND RAPID DEFORMATION OF SAND BARS OWING TO TSUNAMI

2017 ◽  
pp. 1
Author(s):  
Yasumitsu Mikami
Keyword(s):  
Tidal Flat ◽  
River Mouth ◽  
Aerial Photographs ◽  
Tokyo Bay ◽  
Shoreline Changes ◽  
The North ◽  
Sand Bars ◽  
Sand Supply ◽  
Rapid Deformation

Long-term shoreline changes on the marginal coast of the Banzu tidal flat in Tokyo Bay were investigated using aerial photographs. In the area immediately north of the Obitsu River mouth, the beach was eroded owing to the decrease in sand supply from the river, resulting in the exposure of a layer composed of cohesive material in the previous tidal flat, and sand was transported northward to form a sand spit at the mouth of the north tributary. In 2011, the giant tsunami generated by the Great East Japan Earthquake propagated deep into Tokyo Bay, and sand bars were pushed landward by 7 m parallel to the shoreline owing to the tsunami overflow.

Field Observation of Saltmarsh-Edge Morphology and Associated Vegetation Characteristics in an Open-Coast Tidal Flat

2020 ◽  
Vol 95 (sp1) ◽  
pp. 412
Author(s):  
Lei Chen ◽  
Zeng Zhou ◽  
Fan Xu ◽  
Iris Möller ◽  
Changkuan Zhang
Keyword(s):  
Tidal Flat ◽  
Field Observation ◽  
Open Coast ◽  
Vegetation Characteristics ◽  
Edge Morphology
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