scholarly journals LONG-TERM MONITORING OF THE EUROPEAN ROLLER (CORACIAS GARRULUS) IN UKRAINE: IS CLIMATE BEHIND THE CHANGES?

2021 ◽  
Author(s):  
Tatiana Shupova ◽  
Volodymyr Tytar
Keyword(s):  
Spatially Explicit ◽  
Climate Data ◽  
Time Intervals ◽  
Coracias Garrulus ◽  
The Past ◽  
Historical Times ◽  
Long Term Monitoring ◽  
European Roller ◽  
Term Monitoring

Since the 1980s there has been a long-term decline in numbers and contraction of range in Europe, including Ukraine. Our specific goals were to reconstruct the climatically suitable range of the species in Ukraine before the 1980s, gain better knowledge on its requirements, compare the past and current suitable areas, infer the regional and environmental variables that best explain its occurrence, and quantify the overall range change in the country. For these purposes we created a database consisting of 347 records of the roller made ever in Ukraine. We employed a species distribution modeling (SDM) approach to hindcast changes in the suitable range of the roller during historical times across Ukraine and to derive spatially explicit predictions of climatic suitability for the species under current climate. SDMs were created for three time intervals (before 1980, 1985-2009, 2010-2021) using corresponding climate data extracted from the TerraClim database. SDMs show a decline of suitable for rollers areas in the country from 85 to 46%. Several factors, including land cover and use, human population density and climate, that could have contributed to the decline of the species in Ukraine were considered. We suggest climate change and its speed (velocity) have been responsible for shaping the contemporary home range of the European roller.

scholarly journals LONG-TERM MONITORING OF THE EUROPEAN ROLLER (CORACIAS GARRULUS) IN UKRAINE: IS CLIMATE BEHIND THE CHANGES?

2021 ◽  
Author(s):  
Tatiana Shupova ◽  
Volodymyr Tytar
Keyword(s):  
Climate Change ◽  
Species Distribution ◽  
Species Distribution Modelling ◽  
Climate Data ◽  
Time Intervals ◽  
Distribution Modelling ◽  
Coracias Garrulus ◽  
Historical Times ◽  
European Roller

Since the 1980s there has been a long-term decline in numbers and contraction of range in Europe, including Ukraine. Our specific goals were to reconstruct the climatically suitable range of the species in Ukraine before the 1980s, gain better knowledge on its requirements, compare the past and current suitable areas, infer the regional and environmental variables that best explain its occurrence, and quantify the overall range change in the country. For these purposes we created a database consisting of 347 records of the roller made ever in Ukraine. We employed a species distribution modeling (SDM) approach to hindcast changes in the suitable range of the roller during historical times across Ukraine and to derive spatially explicit predictions of climatic suitability for the species under current climate. SDMs were created for three time intervals (before 1980, 1985-2009, 2010-2021) using corresponding climate data extracted from the TerraClim database. SDMs show a decline of suitable for rollers areas in the country from 85 to 46%. Several factors, including land cover and use, human population density and climate, that could have contributed to the decline of the species in Ukraine were considered. We suggest climate change and its speed (velocity) have been responsible for shaping the contemporary home range of the European roller. Key words: Coracias garrulus; species distribution modelling; ecological niche; climate change; velocity of climate change

scholarly journals FORECAST OF THE REFORMATION OF THE KRASNOYARSK RESERVOIR COASTAL ZONE IN THE KURTAK VILLAGE

2019 ◽  
Vol 29 (2) ◽  
pp. 267-278
Author(s):  
G.Yu. Yamskikh ◽  
A.V. Kozhukhovsky ◽  
K.V. Marusin ◽  
E.A. Fedorova
Keyword(s):  
Economic Activity ◽  
Similar Type ◽  
Coastal Processes ◽  
The Past ◽  
The Reformation ◽  
Long Term Monitoring ◽  
Verification Of Models ◽  
The Village ◽  
Term Monitoring

The article presents the analysis and prediction of coastal processes at the site of the Krasnoyarsk reservoir in the village of Kurtak where there are the most intensive processes of coastal reshaping. Over the past 50 years, the coast has receded here by an average of 350 m and continues to actively collapse at a speed of 3-5 m per year. Despite the fact that the intensity of coastal processes in this area has significantly decreased (mainly due to the general decrease in the level of the Krasnoyarsk reservoir), the rate of retreat of the shore is still high. However, it can be concluded that for the researched area the coastal reshaping does not pose a real threat to economic activity in the next 30 years. The article tested various methods of forecasting coastal processes, selected the most appropriate for the shores of a similar type. Verification of models was carried out on the basis of data of long-term monitoring of the site under consideration, which gave the chance to compare results of forecasts on different techniques to real retreat of the coast on this site.

scholarly journals The diverse pulsational behaviour of β Cep stars: results from long-term monitoring

2013 ◽  
Vol 9 (S301) ◽  
pp. 417-418 ◽  
Author(s):  
G. Handler
Keyword(s):  
The Past ◽  
Consistent Picture ◽  
Long Term Monitoring ◽  
Frequency Changes ◽  
Term Monitoring

AbstractWe studied seven β Cep stars photometrically over the past ten years. Some showed amplitude variations, some frequency changes, and others exhibited stable pulsations, with no consistent picture yet emerging. Additionally, 12 Lac appears to have a 6.7-yr binary companion.

scholarly journals Long‐term monitoring reveals decreasing water beetle diversity, loss of specialists and community shifts over the past 28 years

2020 ◽  
Vol 13 (2) ◽  
pp. 140-150 ◽  
Author(s):  
Nicolas Roth ◽  
Sebastian Zoder ◽  
Assad Ali Zaman ◽  
Simon Thorn ◽  
Jürgen Schmidl
Keyword(s):  
The Past ◽  
Diversity Loss ◽  
Water Beetle ◽  
Community Shifts ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals Establishing material hygrothermal characteristics via long-term monitoring and best-fit numerical models

2020 ◽  
Vol 172 ◽  
pp. 17009
Author(s):  
Mihails Birjukovs ◽  
Inga Apine ◽  
Andris Jakovics
Keyword(s):  
Experimental Data ◽  
Relative Humidity ◽  
Initial Conditions ◽  
Numerical Models ◽  
Climate Data ◽  
Material Models ◽  
Long Term Monitoring ◽  
Best Fit ◽  
Term Monitoring

Numerical models of heat and moisture transfer for performance forecast of lightweight insulating assemblies require many inputs. These include exterior climate data (i.e. temperature, relative humidity, solar radiation), interior climate data or standard models, transfer coefficients, correct initial conditions, etc. Most importantly, one needs reliable material models. A material model includes porosity, density, heat capacity, but also non-constant properties, such as thermal conductivity, vapor/liquid water diffusivity, sorption curves. These are, in general, difficult to determine, and material database entries often are incomplete, or simply non-existent. However, if one performs long-term monitoring of temperature and relative humidity dynamics within building envelopes, there is a way to determine hygrothermal curves and properties of the underlying materials. This can be done by performing simulations and finding the set of optimal hygrothermal curves and coefficients such that the experimental data is matched sufficiently well. Despite the appeal, this best-fit model approach is fraught with perils due to many unknowns and must be used carefully. In this article, we demonstrate the application of this method to insulating assemblies for which 6+ years' worth of experimental data is available, and showcase our results obtained using WUFI Pro 6.3 and the derived and verified material models.

scholarly journals Impact of coastal development on mangrove distribution in Cherating Estuary, Pahang, Malaysia

2019 ◽  
Vol 15 (3) ◽  
pp. 456-461
Author(s):  
Zuhairi Ahmad ◽  
Muhammad Luqman Mohamad Suharni ◽  
Siti Noor Aifa Taib ◽  
Muhammad Shaheed Shammodin
Keyword(s):  
Supervised Classification ◽  
Coastal Development ◽  
The Past ◽  
Mangrove Ecosystems ◽  
Long Term Monitoring ◽  
Tourism Attractions ◽  
The Impact ◽  
Term Monitoring ◽  
Mangrove Degradation

This study examined the impact of various coastal developments on mangrove cover along the Cherating Estuary, Pahang, Malaysia between 1997 and 2016. Series of Landsat imageries at Cherating Estuary have been analyzed using supervised classification. Over 19.99% (26.275 ha) of mangrove cover was degraded along the Cherating estuary from its total area of 131.642 ha during the past 20 years. The expansion of development or urban area can be observed in 1997 (27.93 ha) and in 2016 (111.02 ha), showing an increase by 297.0% in 20 years. We identified several causes of mangrove degradation, including mangrove clearing to commercial or residential area, and aquaculture activities. Cherating is one of the main tourism attractions in Pahang. The pace of coastal development throughout the estuary and the coast area had suppressed the mangroves propagation over the years. Long term monitoring of mangrove ecosystems is essential to ensure the survival and sustainability of mangrove associated biodiversity.

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