Species variability in the response to elevated temperature of select corals in north-western Philippines

2019 ◽  
Vol 99 (06) ◽  
pp. 1273-1279 ◽  
Author(s):  
Jeric P. Da-Anoy ◽  
Patrick C. Cabaitan ◽  
Cecilia Conaco
Keyword(s):  
Thermal Stress ◽  
Elevated Temperature ◽  
Photochemical Efficiency ◽  
Temperature Treatment ◽  
Symbiont Type ◽  
The North ◽  
Acropora Digitifera ◽  
Algal Symbiont ◽  
The Impact ◽  
North Western

AbstractThermal stress events threaten coral populations by disrupting symbiosis between the coral animal and microalgal symbionts in its tissues. These symbionts are key players in the response of the coral holobiont to elevated temperature. However, little is known about the microalgal symbiont type in select corals in the north-western Philippines and how they contribute to the differential responses of coral species. Based on sequencing of major ITS2 bands from DGGE, the dominant algal symbiont inAcropora digitifera,A. millepora,A. tenuisandFavites colemaniwas identified to be closely related to ITS2 type C3u,Montipora digitatacontained ITS2 type C15, andSeriatopora caliendrumhosted ITS2 types similar to C3-Gulf and D1. Thin branching corals, such asA. tenuisandS. caliendrum, exhibited the greatest reduction in photochemical efficiency (Fv/Fm) and symbiont density at elevated temperature, followed byM. digitataandA. millepora, to a lesser extent.A. digitiferaandF. colemaniwere least affected by the temperature treatment. Reduction in Fv/Fm and symbiont density was more apparent inA. tenuisandA. milleporathan inM. digitataandF. colemani, although these species all host ITS2 type C3u symbionts. These results suggest that the impact of elevated temperature is influenced by factors apart from symbiont type. This highlights the importance of further studies on the diversity of corals and their microalgal symbionts in the region to gain insights into their potential resilience to recurring thermal stress events.

scholarly journals Trend in an isolated population of the red-footed falcon (Falco vespertinus) at the edge of its breeding range (south-western Slovakia)

2017 ◽  
Vol 11 (1) ◽  
pp. 83-89
Author(s):  
Roman Slobodník ◽  
Jozef Chavko ◽  
Jozef Lengyel ◽  
Michal Noga ◽  
Boris Maderič ◽  
...  
Keyword(s):  
Population Decline ◽  
Breeding Population ◽  
Isolated Population ◽  
Breeding Range ◽  
The Core ◽  
Nest Boxes ◽  
Slovak Population ◽  
The North ◽  
The Impact ◽  
North Western

Abstract The population of the red-footed falcon in Slovakia inhabits the north-western edge of the species' breeding range. This breeding population is relatively small and came near to extinction during the population decline of this species in central Europe in recent decades. Thanks to increasing numbers of breeding pairs in Hungary, the Slovak population began to grow again. Moreover, some differences in breeding biology associated with breeding in nest boxes were found. Here we describe the dependence of the small isolated breeding population in Slovakia on the core population in the more eastern parts of the Carpathian Basin, and the impact of supporting activities (nest boxes) on this raptor species in Slovakia.

scholarly journals Areas of syntaxons of bog vegetation in the taiga zone of European Russia and the influence of the orographic factor on them

2019 ◽  
pp. 160-164
Author(s):  
V. A. Smagin
Keyword(s):  
Plant Communities ◽  
Southern Taiga ◽  
European Russia ◽  
Western Region ◽  
Taiga Zone ◽  
The North ◽  
Pass Through ◽  
The Impact ◽  
Eastern Edge ◽  
North Western

The aim of the article is to review the geographical distribution of the main types of plant communities of mires of the boreal zone of European Russia, and to assess the impact of the orographic factor on it. The review made on the materials of 40-year study of mires vegetation of European Russia. It was found that the main botanical and geographical boundaries within the taiga zone of European Russia pass through the subzones of the northern and southern taiga, the Eastern edge of Fennoscandia and the coastal part of the North-Western region.

scholarly journals ECOLOGICAL CONDITIONS OF BIRD HABITATS IN THE SOUTH OF UKRAINE

2019 ◽  
pp. 209
Author(s):  
Elnara Ayubova
Keyword(s):  
Comparative Analysis ◽  
Relevant Literature ◽  
Steppe Zone ◽  
The South ◽  
Ecological Conditions ◽  
The North ◽  
Azov Sea ◽  
The Impact ◽  
North Western

The publication focuses on the study of ecological conditions of bird habitats in the steppe zone of Ukraine. The material is based on the original observations in the north-western part of the Azov Sea region over the period 2009-2018 and on the data from relevant literature sources. The impact of changes in ecological conditions of bird habitats was considered and analyzed. The objectives were to show stages of changes in ecological conditions of the Ukrainian steppe and to carry out a comparative analysis of original ornithological data with the data of other authors.

A method to measure three-dimensional substratum rugosity for ecological studies: an example from the date-mussel fishery desertification in the north-western Mediterranean

2006 ◽  
Vol 86 (4) ◽  
pp. 689-690 ◽  
Author(s):  
Valeriano Parravicini ◽  
Alessio Rovere ◽  
Marco Donato ◽  
Carlo Morri ◽  
Carlo Nike Bianchi
Keyword(s):  
Analysis Of Variance ◽  
Three Dimensional ◽  
Western Mediterranean ◽  
Ecological Studies ◽  
The North ◽  
And Control ◽  
The Impact ◽  
North Western ◽  
Italian Coast

The impact of date-mussel fishery on substratum rugosity was evaluated at Capo Noli and Isola di Bergeggi (Savona, north-western Italian coast) in the summer of 2004. A new measure of substratum rugosity was used as a surface-dependent index of complexity. The results were compared between impact and control sites using two-way analysis of variance and suggested that the mussel fishery reduces substratum complexity.

scholarly journals Circulation conditions of strong and elemental wind over southwestern Ukraine

2017 ◽  
pp. 38-48 ◽  
Author(s):  
Н.P. Ivus ◽  
E.V. Agayar ◽  
L.M. Hurska ◽  
А.В. Semergei-Chumachenko
Keyword(s):  
Wind Speed ◽  
Atmospheric Circulation ◽  
Black Sea ◽  
The Black Sea ◽  
Strong Wind ◽  
The South ◽  
The North ◽  
Strong Winds ◽  
The Impact ◽  
North Western

Introduction. Nowadays the problem of storm winds appears to be a very relevant one in those spheres of human activities related to safety of human living, coastal infrastructure, seafaring, aviation etc. One of the conditions for successful forecasting of strong winds is familiarization with wind characteristics of the study area and with synoptic conditions causing them. The below listed results of research form continuation of previous works for search of a better synoptic classification reflecting completeness of macroscale baric processes causing formation of winds, including strong winds, over the South of Ukraine and also providing an opportunity to forecast winds in a more accurate manner. The purpose of this publication consists in analysis of interaction of large-scale atmospheric circulation with formation of unfavorable weather conditions (strong and very strong winds) on the north-west coast of the Black Sea. Methods and results. The impact of storm winds is significant for functioning of the national economic complex of the North-Western Black Sea region. In order to investigate this effect there were fifty seven cases of wind amplification up to criterion of strong ≥ 15 m·s-1 and very strong ≥ 25 m·s-1 selected within the Odessa region during the period from October to March in 2011 – 2014. Indexes of Katz circulation for isobaric surface of 500 hPa were calculated as per the data of synoptic archive for the cases with wind speed of ≥ 15 m·s-1. A more detailed study of the structure of macrocirculation processes under strong winds, except for Katz indexes, is provided by means of classification and calendar of successive change of elementary circulation mechanisms (ECM) in the Northern hemisphere according to Dzerdzeyevskyi B.L. and typification of synoptic processes developed at the Department of Theoretical Meteorology and Meteorological Forecasts of OSENU. It was determined that strong and very strong winds often occur in southern and central regions, particularly at the stations located on the shores of seas and estuaries (Bilgorod-Dnistrovskyi, Ust-Dunaysk, Pivdennyi port). Meridional type of atmospheric circulation (77.2%) creates favourable conditions for wind amplification in the North-Western part of the Black Sea up to the criterion of strong and very strong one, zonal type of circulation constitutes 22.8% from the total number of cases. Meridional type of circulation is mainly represented by mixed and western forms – (24.6%) and (22.8%) respectively. Main types of synoptic situations (5, 6) of Katz typification that used to cause strong winds were revealed. Most frequently strong wind was observed while moving of cyclonic vortexes from the South (ECM type – 12a, 13z) and in the area of cyclones and anticyclones interaction. Conclusion. It was found that wind speed amplification in the South of Ukraine up to the criteria of strong and very strong one mainly occurs due to the meridional type of atmospheric circulation which is dominated by mixed or western forms of circulation as per Katz typification, ECM type 12a and 13z according to Dzerdzeyevskyi B.L. and types 5 (subtype 5.2) and 6 (all subtypes depending on ECM) as per synoptic typification of OSENU. Directions for further research should include the following. The conclusions have preliminary character and need confirmation on the basis of bigger scope of statistical data.

scholarly journals Assessment of impact of combined heat on the environment of urbanized areas (case study of Ulan-Ude, Russia)

2021 ◽  
Vol 885 (1) ◽  
pp. 012047
Author(s):  
A V Dmitrieva ◽  
V N Khertuev ◽  
P V Konovalov ◽  
I A Barmitova
Keyword(s):  
Power Plants ◽  
Coal Dust ◽  
The North ◽  
Key Indicators ◽  
The Impact ◽  
The City ◽  
North Western ◽  
Dispersion Calculation

Abstract Combined heat and power plants (CHPP) are an important component of the energy balance in many countries. However, of all types of power plants, CHPPs have the largest impact on the environment. In recent years, the urban ecology has become one of the key indicators that determine the quality of life of city residents. The article evaluates the impact of the CHPPs in Ulan-Ude on the example of CHPP-1. The main sources of environmental pollution, and, accordingly, the zone of exposure of CHPP-1’ pollutants have been identified. Virtually the entire territory of the city of Ulan-Ude falls under this zone, but since northwestern winds prevail in this area, the north-western part of the city is most affected. Based on the results of a detailed dispersion calculation, we defined the following substances which should be monitored: nitrogen dioxide, sulfur dioxide, mineral oil, and inorganic dust (70-20% SiO2 and coal dust). The concentration of these substances in the air is significant.

Responses of Algal Communities of the North-Western Black Sea to the Impact of Local, Regional, and Global Factors

2013 ◽  
Vol 15 (2) ◽  
pp. 164-179 ◽  
Author(s):  
G. G. Minicheva ◽  
Yu. S. Tuchkovenko ◽  
V. Bolshakov ◽  
A. B. Zotov ◽  
E. Rusnak
Keyword(s):  
Black Sea ◽  
Algal Communities ◽  
The North ◽  
The Impact ◽  
North Western
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