Geographic distribution and environmental control of vertebral count inAmmodytesspp. along the northern Pacific coast of Japan

2016 ◽  
Vol 90 (3) ◽  
pp. 773-785 ◽  
Author(s):  
J. Aoyama ◽  
T. Yoshinaga ◽  
C. Tanaka ◽  
K. Ishii
Keyword(s):  
Geographic Distribution ◽  
Pacific Coast ◽  
Environmental Control ◽  
Vertebral Count ◽  
Northern Pacific ◽  
Pacific Coast Of Japan

scholarly journals Population connectivity of Ezo abalone on the northern Pacific coast of Japan in relation to the establishment of harvest refugia

2011 ◽  
Vol 440 ◽  
pp. 137-150 ◽  
Author(s):  
Y Miyake ◽  
S Kimura ◽  
T Kawamura ◽  
T Kitagawa ◽  
T Takahashi ◽  
...  
Keyword(s):  
Pacific Coast ◽  
Population Connectivity ◽  
Northern Pacific ◽  
Pacific Coast Of Japan

scholarly journals FIELD STUDY OF CONTRASTING BEACH RECOVERY PROCESSES OBSERVED IN NAMI-ITA and KIRIKIRI COASTS AFTER THE 2011 TOHOKU EARTHQUAKE

2018 ◽  
pp. 94
Author(s):  
Y. Kojima ◽  
Y. Tajima ◽  
Y. Matsuba ◽  
T. Shimozono ◽  
T. Terasawa ◽  
...  
Keyword(s):  
Field Study ◽  
Pacific Coast ◽  
Tohoku Earthquake ◽  
Shoreline Change ◽  
2011 Tohoku Earthquake ◽  
The 2011 Tohoku Earthquake ◽  
Shoreline Retreat ◽  
Recovery Processes ◽  
Northern Pacific ◽  
Pacific Coast Of Japan

The 2011 Tohoku Earthquake caused significant shoreline retreat along the northern Pacific coast of Japan and most of the affected beaches have not yet fully recovered even six years after the event. This study investigates overall characteristics of the shoreline change after the event and also investigates contrasting beach recovery processes observed in Nami-ita and Kirikiri coasts.

From Ranching to Fishing – The Cultural Landscape of the Northern Pacific Coast of Baja California, Mexico

2016 ◽  
Vol 59 ◽  
Author(s):  
Antoinette WinklerPrins ◽  
Pablo Alvarez ◽  
Gerardo Bocco ◽  
Ileana Espejel
Keyword(s):  
Cultural Landscape ◽  
Baja California ◽  
Pacific Coast ◽  
Northern Pacific

scholarly journals Development of a time-series shotgun metagenomics database for monitoring microbial communities at the Pacific coast of Japan

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kazutoshi Yoshitake ◽  
Gaku Kimura ◽  
Tomoko Sakami ◽  
Tsuyoshi Watanabe ◽  
Yukiko Taniuchi ◽  
...  
Keyword(s):  
Time Series ◽  
Microbial Communities ◽  
Pacific Coast ◽  
Three Dimensional ◽  
Amplicon Sequencing ◽  
Metagenomic Data ◽  
Shotgun Metagenomics ◽  
Functional Features ◽  
Pacific Coast Of Japan ◽  
Marine Microbial Communities

AbstractAlthough numerous metagenome, amplicon sequencing-based studies have been conducted to date to characterize marine microbial communities, relatively few have employed full metagenome shotgun sequencing to obtain a broader picture of the functional features of these marine microbial communities. Moreover, most of these studies only performed sporadic sampling, which is insufficient to understand an ecosystem comprehensively. In this study, we regularly conducted seawater sampling along the northeastern Pacific coast of Japan between March 2012 and May 2016. We collected 213 seawater samples and prepared size-based fractions to generate 454 subsets of samples for shotgun metagenome sequencing and analysis. We also determined the sequences of 16S rRNA (n = 111) and 18S rRNA (n = 47) gene amplicons from smaller sample subsets. We thereafter developed the Ocean Monitoring Database for time-series metagenomic data (http://marine-meta.healthscience.sci.waseda.ac.jp/omd/), which provides a three-dimensional bird’s-eye view of the data. This database includes results of digital DNA chip analysis, a novel method for estimating ocean characteristics such as water temperature from metagenomic data. Furthermore, we developed a novel classification method that includes more information about viruses than that acquired using BLAST. We further report the discovery of a large number of previously overlooked (TAG)n repeat sequences in the genomes of marine microbes. We predict that the availability of this time-series database will lead to major discoveries in marine microbiome research.

scholarly journals Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History

2021 ◽  
Vol 13 (14) ◽  
pp. 2732
Author(s):  
Jonathan Peereman ◽  
J. Aaron Hogan ◽  
Teng-Chiu Lin
Keyword(s):  
Water Content ◽  
Geographic Distribution ◽  
Low Temperatures ◽  
Forest Canopy ◽  
Cold Wave ◽  
Mangrove Forests ◽  
Climate History ◽  
Wave Effects ◽  
Northern Pacific ◽  
Wave Induced

Mangrove forests growing at the poleward edges of their geographic distribution are occasionally subject to freezing (<0 °C) and cold wave (>0 °C) events. Cold wave effects on mangrove trees are well documented and adaptation to cold stress has been reported for local mangrove populations in the North Atlantic. However, there is less understanding of effects of cold waves on mangroves in the northern Pacific, especially at the regional scale. Moreover, it is unclear if cold tolerant mangrove species of North Asia display variation in resistance to cold temperatures across their geographic distribution. Using a cold wave event that occurred in January 2021, we evaluated the effects of low temperatures on vegetation index (VI) change (relative to a recent five-year baseline) for mangrove forests dominated by Kandelia obovata (Rhizophoraceae) and Avicennia marina (Acanthaceaee) at the northern edge of their geographical range. We used two VIs derived from Sentinel-2 imagery as indicators for canopy health: the normalized difference infrared index (NDII) and the chlorophyll red-edge index (ChlRE), which reflect forest canopy water content and chlorophyll concentration, respectively. We isolated the cold wave effects on the forest canopy from phenology (i.e., cold wave induced deviation from a five-year baseline) and used multiple linear regression to identify significant climatic predictors for the response of mangrove forest canopy VI change to low temperatures. For areas where the cold wave resulted in temperatures <10 °C, immediate decreases in both VIs were observed, and the VI difference relative to the baseline was generally greater at 30-days after the cold wave than when temperatures initially recovered to baseline values, showing a slight delay in VI response to cold wave-induced canopy damage. Furthermore, the two VIs did not respond consistently suggesting that cold-temperature induced changes in mangrove canopy chlorophyll and water content are affected independently or subject to differing physiological controls. Our results confirm that local baseline (i.e., recent past) climate predicts canopy resistance to cold wave damage across K. obovata stands in the northern Pacific, and in congruence with findings from New World mangroves, they imply geographic variation in mangrove leaf physiological resistance to cold for Northern Pacific mangroves.

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