scholarly journals Classification of Active Fires and Weather Conditions in the Lower Amur River Basin

2020 ◽  
Vol 12 (19) ◽  
pp. 3204
Author(s):  
Hiroshi Hayasaka ◽  
Galina V. Sokolova ◽  
Andrey Ostroukhov ◽  
Daisuke Naito
Keyword(s):  
River Basin ◽  
Boreal Forests ◽  
Weather Condition ◽  
Weather Forecast ◽  
Weather Conditions ◽  
Amur River Basin ◽  
Fire Weather ◽  
Strong Wind ◽  
Amur River ◽  
Active Fire

Most wildland fires in boreal forests occur during summer, but major fires in the lower Amur River Basin of the southern Khabarovsk Krai (SKK) mainly occur in spring. To reduce active fires in the SKK, we carried out daily analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) hotspot (HS) data and various weather charts. HS data of 17 years from 2003 were used to identify the average seasonal fire occurrence. Active fire-periods were extracted by considering the number of daily HSs and their continuity. Weather charts, temperature maps, and wind maps during the top 12 active fire-periods were examined to clarify each fire weather condition. Analysis results showed that there were four active fire-periods that occurred in April, May, July, and October. Weather charts during the top active fire-periods showed active fires in April and October occurred under strong wind conditions (these wind velocities were over 30 km h−1) related to low-pressure systems. The very active summer fire at the end of June 2012 occurred related to warm air mass advection promoted by large westerly meandering. We showed clear fire weather conditions in the SKK from March to October. If a proper fire weather forecast is developed based on our results, more efficient and timely firefighting can be carried out.

The sympatric whitefishes Coregonus ussuriensis and C. chadary from the Amur River basin: Morphology, biology and genetic diversity

2017 ◽  
Vol 189 (3) ◽  
pp. 193-207 ◽  
Author(s):  
NickolaiA. Bochkarev ◽  
ElenaI. Zuykova ◽  
SergeyA. Abramov ◽  
ElenaV. Podorozhnyuk ◽  
DmitryV. Politov
Keyword(s):  
Genetic Diversity ◽  
River Basin ◽  
Amur River Basin ◽  
Amur River ◽  
The Amur River ◽  
Basin Morphology

New taxa in Arundinella and Calamagrostis (Poaceae) from the Russian Far East

2017 ◽  
Vol 48 ◽  
pp. 13-22
Author(s):  
N. S. Probatova
Keyword(s):  
River Basin ◽  
New Taxa ◽  
Chromosome Numbers ◽  
Russian Far East ◽  
Far East ◽  
Amur Region ◽  
Amur River Basin ◽  
Amur River ◽  
The Amur River ◽  
The Russian Far East

Calamagrostis are described from the Russian Far East. Chromosome numbers are reported for two new taxa. Calamagrostis burejensis Prob. et Barkalov, 2n = 28 (sect. Calamagrostis), C. zejensis Prob., 2n = 28 (sect. Deyeuxia), and C. × amgunensis Prob. (C. amurensis Prob. × C. neglecta (Ehrh.) G. Gaertn., B. Mey. et Scherb. s. l.) are described from the Amur River basin (Amur Region or Khabarovsk Territory); Arundinella rossica Prob. (sect. Hirtae) and Calamagrostis kozhevnikovii Prob. et Prokopenko (sect. Calamagrostis) from Primorye Territory.

scholarly journals Individual tracking reveals first breeding of Oriental Storks at age 2 years in the wild

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Anton Sasin ◽  
Anna Serdyuk ◽  
Baoguang Zhu ◽  
Qingshan Zhao
Keyword(s):  
River Basin ◽  
Wild Population ◽  
Sex Identification ◽  
Amur River Basin ◽  
Amur River ◽  
Field Verification ◽  
Successful Reproduction ◽  
In The Wild ◽  
Individual Tracking

AbstractIn this study, we report the first ever documented instances of attempted and successful reproduction (rearing two offspring) of Oriental Storks (Ciconia boyciana) at age 2 years in a wild population in the middle Heilongjiang-Amur River Basin in Russia, using a combination of GPS-GSM tracking, DNA sex identification and field verification.

scholarly journals The influence of Fe(III) and Mn(IV) on the biotransformation of hydrocarbons in groundwater

2019 ◽  
pp. 21-31
Author(s):  
N. K. Fisher
Keyword(s):  
River Basin ◽  
Aqueous Phase ◽  
Solid Phase ◽  
Close Correlation ◽  
Electron Acceptors ◽  
Amur River Basin ◽  
Geochemical Background ◽  
Amur River ◽  
Kinetic Factor ◽  
Microbiological Processes

According to the thermodynamic ladder, microorganisms in groundwater use electron acceptors consistently – for transformation of pollution from the pollution plume edge to its core. However, some researchers come to the conclusion that only methanogenic biotransformation of pollution or reduction of Fe(III) and Mn(IV) from the solid phase can occur in the plume, and due to the kinetic factor microorganisms use electron acceptors from the aqueous phase (O2, NO3- и SO42-) only on the edge of the pollution plume. The purpose of the research was to determine whether microorganisms use Fe(III) and Mn(IV) as acceptors of electrons for hydrocarbons transformation in groundwater in the northern part of the Middle Heilongjiang-Amur River basin aquifer. In the study area, both lenses of petroleum-hydrocarbons (non-aqueous phase liquids) on the surface of groundwater (up to 2.5 m) and high concentrations of dissolved hydrocarbons (up to 1000 mg/l) are noted. Microbiological processes were assessed in situ by the method of geochemical indicators. The most active biogeochemical processes occurred during the spring-summer rise of groundwater level. The seasonal increasing of level led to the entry of Fe(III) and Mn(IV) into the pollution plume and activation of the microbiological processes of its reduction. Microorganisms mostly use electron acceptors from the solid phase – Fe(III) and Mn(IV), but not NO3, SO42 from the aqueous phase. This is confirmed by the close correlation of HCO3- formation and that of Fe(II) and Mn(II) in groundwater (r2 up to 0.93). This says that for the groundwater self-purification the kinetic factor rather than thermodynamic one is decisive; and microorganisms use electron acceptors that are currently available. As a result of microbiological pollution destruction, the content of Fe(II) in groundwater increased up to 100 mg/l, Mn (II) – up to 16 mg/l, which exceeds the natural background 4 and 8 times, respectively. This was also because the regional geochemical background of the study area (Amur River basin) forms Fe and Mn.

scholarly journals The first record of Helobdella nuda (Hirudinida, Glossiphoniidae) in lake Baikal

2012 ◽  
Vol 46 (5) ◽  
pp. 40-41 ◽  
Author(s):  
I. A. Kaygorodova ◽  
S. Yu. Utevsky
Keyword(s):  
River Basin ◽  
Lake Baikal ◽  
First Record ◽  
Shallow Waters ◽  
Amur River Basin ◽  
Amur River ◽  
The Amur River

The First Record of Helobdella nuda (Hirudinida, Glossiphoniidae) in Lake Baikal. Kaygorodova I. A., Utevsky S. Yu. - By far, the leech species Helobdella nuda (Moore, 1924) was known from China and the Amur River basin. It is found to occur in shallow waters of Lake Baikal.

scholarly journals Topography as a macroscopic index for the dissolved iron productivity of different land cover types in the Amur River Basin

2010 ◽  
Vol 4 ◽  
pp. 85-89 ◽  
Author(s):  
Takeo Onishi ◽  
Muneoki Yoh ◽  
Hideaki Shibata ◽  
Seiya Nagao ◽  
Masayuki Kawahigashi ◽  
...  
Keyword(s):  
Land Cover ◽  
River Basin ◽  
Amur River Basin ◽  
Amur River ◽  
Land Cover Types ◽  
Dissolved Iron ◽  
The Amur River
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