scholarly journals Population and habitat of wintering Brent Geese Branta bernicla in eastern Oshima Peninsula, Tsugaru Strait and Mutsu Bay

2015 ◽  
Vol 64 (1) ◽  
pp. 77-82 ◽  
Author(s):  
Kazuhiko HIRATA ◽  
Masayuki SENZAKI ◽  
Takanori HORIMOTO ◽  
Yuki OSAFUNE ◽  
Junichi SAKAI ◽  
...  
Keyword(s):  
Branta Bernicla ◽  
Tsugaru Strait ◽  
Mutsu Bay

scholarly journals Low-Level Easterly Winds Blowing through the Tsugaru Strait, Japan. Part II: Numerical Simulation of the Event on 5–10 June 2003

2012 ◽  
Vol 140 (6) ◽  
pp. 1779-1793 ◽  
Author(s):  
Teruhisa Shimada ◽  
Masahiro Sawada ◽  
Weiming Sha ◽  
Hiroshi Kawamura
Keyword(s):  
Pressure Gradient ◽  
Air Temperature ◽  
Temperature Difference ◽  
Diurnal Variations ◽  
Gradient Force ◽  
Pressure Gradient Force ◽  
The West ◽  
Low Level ◽  
Tsugaru Strait ◽  
Mutsu Bay

Abstract This paper investigates the structures of and diurnal variations in low-level easterly winds blowing through the Tsugaru Strait and Mutsu Bay on 5–10 June 2003 using a numerical weather prediction model. Cool air that accompanies prevailing easterly winds owing to the persistence of the Okhotsk high intrudes into the strait and the bay below 500 m during the nighttime and retreats during the daytime. This cool-air intrusion and retreat induce diurnal variations in the winds in the east inlet of the strait, in Mutsu Bay, and in the west exit of the strait. In the east inlet, a daytime increase in air temperature within the strait produces a large air temperature difference with the inflowing cool air, and the resulting pressure gradient force accelerates the winds. The cool air flowing into Mutsu Bay is heated over land before entering the bay during the daytime. The resulting changes in cool-air depth and in pressure gradient force strengthen the daytime winds. In the west exit, local pressure gradient force perturbations are induced by the air temperature difference between warm air over the Japan Sea and cool air within the strait, and by variations in the depth of low-level cool air. The accelerated winds in the west exit extend southwestward in close to geostrophic balance during the daytime and undergo a slight anticyclonic rotation to westerly during the nighttime owing to the dominance of the Coriolis effect.

scholarly journals Investigation of wind properties at MUTSU Bay and TSUGARU Strait JAPAN

2021 ◽  
Vol 1909 (1) ◽  
pp. 012086
Author(s):  
A Honda ◽  
N Sasanuma
Keyword(s):  
Tsugaru Strait ◽  
Mutsu Bay

Evidence of Brent Geese Branta bernicla Moving between an Autumn Staging Area in East Hokkaido and Wintering Sites in West Hokkaido and Northern Honshu

2020 ◽  
Vol 19 (2) ◽  
pp. 211
Author(s):  
Yusuke Sawa ◽  
Chieko Tamura ◽  
Toshio Ikeuchi ◽  
Tetsuo Shimada ◽  
Kaoru Fujii ◽  
...  
Keyword(s):  
Branta Bernicla ◽  
Staging Area

Current Status of Anserinae Wintering in Azov-Black Sea Region of Ukraine

2019 ◽  
Vol 53 (4) ◽  
pp. 297-312
Author(s):  
Yu. O. Andryushchenko ◽  
V. S. Gavrilenko ◽  
V. A. Kostiushyn ◽  
V. N. Kucherenko ◽  
A. S. Mezinov ◽  
...  
Keyword(s):  
Black Sea ◽  
Current Status ◽  
Anser Anser ◽  
Scientific Publications ◽  
Climate Conditions ◽  
Black Sea Region ◽  
Chen Caerulescens ◽  
Branta Bernicla ◽  
The North ◽  
Different Seasons

Abstract In the article is analyzed own field data of the authors and scientific publications on the wintering of Anserinae in the Azov-Black Sea region of Ukraine in 1900–2017, but the main data was obtained in frame of international mid-winter counts (IWC) in 2005–2017. It was found that 9 species of Anserinae occur in this region during the different seasons of the year: Anser anser — nesting, wintering and migrating; Rufibrenta ruficollis, A. albifrons, A. erythropus, A. fabalis — migrating and wintering; Branta canadensis, Branta leucopsis, Branta bernicla, Chen caerulescens — vagrant or birds which flew away from captivity (zoo etc.). Eulabeia indica — is possible vagrant species. The most numerous wintering species is A. albifrons, common — Rufibrenta ruficollis, not numerous — Anser anser, the other species are not met annually and registered in a very small number. There was almost tenfold drop in number of wintering geese in the Azov-Black Sea region of Ukraine during the period of counts. The main reasons of such reducing of geese amount are the followwing: weather and climate conditions, changes in the forage acessibility, hunting and poaching pressure, poisoning as a result of deratization of agricultural lands, and from 2014 — the militarization of the Syvash area and stop of water supplying of Crimea through the North Crimean channell. It is likely that the factors mentioned above led to relocating of wintering areas of Anserinae, and resulted in decreasing of their amount in this region.

Monitoring feeding behaviour of brent geese Branta bernicla using position-sensitive radio transmitters

2001 ◽  
Vol 7 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Mark Hassall ◽  
Simon J. Lane ◽  
Martin Stock ◽  
Steve M. Percival ◽  
Barbara Pohl
Keyword(s):  
Feeding Behaviour ◽  
Branta Bernicla ◽  
Radio Transmitters ◽  
Position Sensitive

Development of Microsatellite Loci Exhibiting Reverse Ascertainment Bias and a Sexing Marker for use in Emperor Geese (Chen Canagica)

2017 ◽  
Vol 10 (4) ◽  
pp. 201-210 ◽  
Author(s):  
Meg C. Gravley ◽  
George K. Sage ◽  
Joel A. Schmutz ◽  
Sandra L. Talbot
Keyword(s):  
Microsatellite Loci ◽  
Statistical Power ◽  
Ascertainment Bias ◽  
Next Generation Sequencing Technology ◽  
Branta Bernicla ◽  
Black Brant ◽  
Expected Heterozygosity ◽  
Cackling Geese ◽  
The 1960S ◽  
Goose Species

The Alaskan population of Emperor Geese ( Chen canagica) nests on the Yukon–Kuskokwim Delta in western Alaska. Numbers of Emperor Geese in Alaska declined from the 1960s to the mid-1980s and since then, their numbers have slowly increased. Low statistical power of microsatellite loci developed in other waterfowl species and used in previous studies of Emperor Geese are unable to confidently assign individual identity. Microsatellite loci for Emperor Goose were therefore developed using shotgun amplification and next-generation sequencing technology. Forty-one microsatellite loci were screened and 14 were found to be polymorphic in Emperor Geese. Only six markers – a combination of four novel loci and two loci developed in other waterfowl species – are needed to identify an individual from among the Alaskan Emperor Goose population. Genetic markers for identifying sex in Emperor Geese were also developed. The 14 novel variable loci and 15 monomorphic loci were screened for polymorphism in four other Arctic-nesting goose species, Black Brant ( Branta bernicla nigricans), Greater White-fronted ( Anser albifrons), Canada ( B. canadensis) and Cackling ( B. hutchinsii) Goose. Emperor Goose exhibited the smallest average number of alleles (3.3) and the lowest expected heterozygosity (0.467). Greater White-fronted Geese exhibited the highest average number of alleles (4.7) and Cackling Geese the highest expected heterozygosity (0.599). Six of the monomorphic loci were variable and able to be characterised in the other goose species assayed, a predicted outcome of reverse ascertainment bias. These findings fail to support the hypothesis of ascertainment bias due to selection of microsatellite markers.

Brant (Branta bernicla)

2020 ◽  
Author(s):  
Tyler L. Lewis ◽  
David H. Ward ◽  
James S. Sedinger ◽  
Austin Reed ◽  
Dirk V. Derksen ◽  
...  
Keyword(s):  
Branta Bernicla

scholarly journals Accelerated ocean acidification in the Tsugaru Strait by an intensified Tsugaru Warm Current

2020 ◽  
Author(s):  
Masahide Wakita ◽  
Ken'ichi Sasaki ◽  
Akira Nagano ◽  
Hiroto Abe ◽  
Takahiro Tanaka ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Warm Current ◽  
Tsugaru Strait ◽  
Tsugaru Warm Current

Molt of Black Brant (Branta bernicla nigricans) on the Arctic Coastal Plain, Alaska

The Auk ◽  
1995 ◽  
Vol 112 (4) ◽  
pp. 904-919 ◽  
Author(s):  
Eric J. Taylor
Keyword(s):  
Coastal Plain ◽  
The Arctic ◽  
Branta Bernicla ◽  
Black Brant ◽  
Arctic Coastal Plain ◽  
Branta Bernicla Nigricans

The role of an intense jet in the Tsugaru Strait in the formation of the outflow gyre revealed using high-frequency radar data

2021 ◽  
Author(s):  
Hitoshi Kaneko ◽  
Ken'ichi Sasaki ◽  
Hiroto Abe ◽  
Shuichi Watanabe ◽  
Yoshiaki Sato
Keyword(s):  
High Frequency ◽  
Radar Data ◽  
High Frequency Radar ◽  
Tsugaru Strait
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