scholarly journals Effects of Isolation by Continental Islands in the Seto Inland Sea, Japan, on Genetic Diversity of the Large Japanese Field Mouse, Apodemus speciosus (Rodentia: Muridae), Inferred from the Mitochondrial Dloop Region

2017 ◽  
Vol 34 (2) ◽  
pp. 112 ◽  
Author(s):  
Jun J. Sato ◽  
Yurina Tasaka ◽  
Ryoya Tasaka ◽  
Kentaro Gunji ◽  
Yuya Yamamoto ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Seto Inland Sea ◽  
Field Mouse ◽  
Apodemus Speciosus ◽  
Continental Islands ◽  
The Seto Inland Sea

scholarly journals Genetic Diversity of Large Japanese Field Mouse Apodemus speciosus Populations and Identification of their Food Plant Resources using DNA Barcoding in an Industrial Green Space

2018 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Taichi Fujii ◽  
Hirokazu Kawamoto ◽  
Tomoyasu Shirako ◽  
Kaoru Ueno ◽  
Motoyasu Minami
Keyword(s):  
Genetic Diversity ◽  
Green Space ◽  
Food Resources ◽  
Food Plant ◽  
Field Mouse ◽  
Plant Food ◽  
Plant Resources ◽  
Apodemus Speciosus ◽  
Reclaimed Land ◽  
Rbcl Sequences

Estimates of the genetic diversity of Large Japanese field mouse Apodemusspeciosus populations and identification of their plant food resources were conducted in an industrial green space, where were constructed on reclaimed land and belonged to the Aichi Refinery of Idemitsu Kosan Co., Ltd., in Aichi Prefecture, Japan. A total of six mitochondrial D-loop haplotypes were identified in 50 mice. Habitat condition with the highest number of captured individuals had abundant broad-leaved trees and understory vegetation. A minimum spanning network, which did not form a ring-shaped network, revealed that the hereditary population structure was weak. The low genetic diversity observed in the study area was thus attributed to isolation from other populations once the population in the study area by sea and road, which is more than 30 m wide. In order to identify which plant food resources were utilized by mice captured inside the industrial green space, partial chloroplast rbcL sequences were amplified by PCR from DNA extracted from 43 feces samples. Calculations of sample completeness curve revealed that 25 of the taxa identified in this study comprised approximately 90% of the food plant resources in the study area. Of the 21 plant families identified from the obtained rbcL sequences, members of the Rosaceae (28.0%), Fagaceae (17.2%), Lauraceae (14.2%) and Oleaceae (7.7%) were dominant. To ensure the continued survival of A. speciosuspopulation in this industrial green space would be to preferentially conserve plant species that are used as food resources by this species.

Geographical Distribution and Genetic Diversity of Praesagittifera naikaiensis (Acoelomorpha) in the Seto Inland Sea, Japan

2020 ◽  
Vol 37 (4) ◽  
pp. 314
Author(s):  
Tomoe Hikosaka-Katayama ◽  
Nanami Watanuki ◽  
Saki Niiho ◽  
Akira Hikosaka
Keyword(s):  
Genetic Diversity ◽  
Geographical Distribution ◽  
Seto Inland Sea ◽  
The Seto Inland Sea

EVALUATION OF MOUNTAIN AREA AS NON-POINT SOURCE OF NITROGEN FOR SETO INLAND SEA: THE NORTHERN SHIKOKU REGION, JAPAN

2017 ◽  
Author(s):  
Shohei Morisawa ◽  
Shohei Morisawa ◽  
Yukio Komai ◽  
Yukio Komai ◽  
Takao Kunimatsu ◽  
...  
Keyword(s):  
Average Concentration ◽  
Point Sources ◽  
Seto Inland Sea ◽  
Mountain Streams ◽  
Unit Load ◽  
Mountain Areas ◽  
Mountain Area ◽  
The Seto Inland Sea ◽  
Unit Load Method ◽  
Important Position

The northern Shikoku region is located in the Western part of Japan and faces towards the Seto Inland Sea. The forest area, which is one of the non-point sources in the Seto Inland Sea watershed, occupies 75% of the land use in the watershed of the northern Shikoku region. The amount of loadings of nutrients and COD in the Seto Inland Sea has been estimated by the unit load method but actually the data has not been investigated. It is however, necessary to know the real concentration of nitrogen in mountain streams to evaluate the role which is the mountain area plays as non-point sources. Therefore, more water samples of mountain streams in the watershed need to be taken and the concentrations of nitrogen analyzed. The mountain streams in the northern Shikoku area were investigated from April, 2015 to November, 2015. The number of sampling sites was 283, in addition to the past data by Kunimatsu et al. The average concentration of nitrate nitrogen in Ehime, Kagawa, and Tokushima was 0.61mg/L, 0.78mg/L and 0.34mg/L, respectively. The environmental standard range for nitrogen in the Seto Inland Sea is from between less than 0.2mg/L and less than 1mg/L. Therefore, the average concentration of nitrogen in these regions was over category II, and those of mountain streams in Kagawa Prefecture exceeded category III. About 20% of mountain streams were more than 1mg/L. It has become clear that mountain areas occupy an important position as non-point sources for the Seto Inland Sea.

STUDY ON STATISTICAL PREDICTION METHOD OF STORM SURGES IN THE SETO INLAND SEA EMPLOYING STOCHASTIC TYPHOON MODEL

2020 ◽  
Vol 76 (2) ◽  
pp. I_1087-I_1092
Author(s):  
Kanoto YOKOYAMA ◽  
Tomohiro YASUDA ◽  
Sooyoul KIM ◽  
Sota NAKAJO ◽  
Tomoya SHIMURA
Keyword(s):  
Prediction Method ◽  
Storm Surges ◽  
Statistical Prediction ◽  
Seto Inland Sea ◽  
The Seto Inland Sea

scholarly journals Temporal distribution of primary and secondary production estimated from water quality data in the Seto Inland Sea, Japan

2021 ◽  
Vol 124 ◽  
pp. 107405
Author(s):  
Wataru Nishijima ◽  
Akira Umehara ◽  
Keigo Yamamoto ◽  
Satoshi Asaoka ◽  
Naoki Fujii ◽  
...  
Keyword(s):  
Water Quality ◽  
Secondary Production ◽  
Temporal Distribution ◽  
Seto Inland Sea ◽  
Quality Data ◽  
Water Quality Data ◽  
The Seto Inland Sea

Economic valuation of the Seto Inland Sea by using an Internet CV survey

2003 ◽  
Vol 47 (1-6) ◽  
pp. 230-236 ◽  
Author(s):  
Takahiro Tsuge ◽  
Toyoaki Washida
Keyword(s):  
Economic Valuation ◽  
Seto Inland Sea ◽  
The Seto Inland Sea
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