scholarly journals Monitoring the spring phenological stages in a spruce monoculture in the Drahanská vrchovina upland in 2005–2011

2012 ◽  
Vol 60 (6) ◽  
pp. 15-20 ◽  
Author(s):  
Emilie Bednářová ◽  
Sabina Truparová ◽  
Lucie Merklová
Keyword(s):  
Statistical Processing ◽  
Climatic Conditions ◽  
Phenological Stages ◽  
Factors Affecting ◽  
Air Temperatures ◽  
Temperature Requirements ◽  
Long Term Monitoring ◽  
Effective Temperatures ◽  
Term Monitoring

The paper evaluates the onset and duration of spring vegetation phenological stages in a spruce monoculture of the third age class in relation to changing parameters of the environment in the region of the Drahanská vrchovina Upland. Temperature requirements of Norway spruce necessary for the onset particular phenological stages were evaluated on the basis of sums of effective temperatures > 5 oC. The period of 2005–2011 is processed in relation to long-term monitoring since 1991. Based on results obtained, there is considerable variability owing to changing climatic conditions in the onset of spring phenological stages in the course of monitored years. In recent years, the earlier onset of spring phenological stages occurs and their duration gets shorter. This phenomenon is caused by higher air temperatures in spring months. The statistical processing of results obtained demonstrated the high dependence of the onset of particular phenological stages on the temperature of air and soil. Particular factors affecting budbreak and foliation cannot be detached and thus, it is necessary to be evaluated as a complex of influences. Long-term phenological studies of forest trees can serve as the bioindicator of climatic changes.

scholarly journals Evaluation of vegetative phenological stages in a spruce monoculture depending on parameters of the environment

2011 ◽  
Vol 59 (6) ◽  
pp. 31-36 ◽  
Author(s):  
Emilie Bednářová ◽  
Lucie Merklová
Keyword(s):  
Correlation Coefficients ◽  
Phenological Stages ◽  
Air Temperatures ◽  
Temperature Requirements ◽  
Sum Of Effective Temperatures ◽  
Soil Temperatures ◽  
Long Term Monitoring ◽  
Effective Temperatures ◽  
Term Monitoring

Vegetative phenological stages were evaluated in a spruce monoculture of the third age class in the region of the Drahanská vrchovina Upland. Methods of the ČHMÚ (Czech Hydro-Meteorological Office) were used. Temperature requirements of Norway spruce for the onset of particular phenological stages were evaluated on the basis of sums of air effective temperatures higher than 5 oC and at soil temperatures, values exceeding 1 oC were taken into account. In the paper, years 2005 to 2007 were evaluated. Results obtained were compared with long-term monitoring for the period 1991–2004. The onset and duration of phenological stages differed in particular years depending on the course of weather. Evaluation of the 17-year period shows that onsets of phenological stages in particular years differed markedly. An interval for the “onset of budbreak stage” was 13 days, at the “stage of 50% foliation” 14 days, the “stage of 100% foliation” 17 days. At the stage “full foliation”, the interval amounts to 33 days in the period 1991 to 2007. The start of budbreak and foliation is affected by air and soil temperatures, which was also proved by statistical evaluations. High dependence between the onset of budbreak and air temperatures is confirmed by statistically significant correlation coefficients R2 = 0.854 (2005–2007) and R2 = 0.754 (1991–2004). Dependence of the onset of budbreak and foliation on the soil temperature is proved by a correlation coefficient R2 = 0.658 (2005 to 2007) and R2 = 0.687 in the period 1991 to 2004. Results show that in recent years, the earlier onset of spring phenological stages occurs at the higher sum of effective temperatures. The length of their duration shortens.

scholarly journals Design and monitoring of energy-active facade module

2020 ◽  
Vol 172 ◽  
pp. 24005
Author(s):  
Nikola Pokorny ◽  
Tomas Matuska ◽  
Vladimir Jirka ◽  
Borivoj Sourek
Keyword(s):  
Central Europe ◽  
Climatic Conditions ◽  
Solar Irradiation ◽  
Winter Period ◽  
Summer Period ◽  
Beam Radiation ◽  
Potential Benefits ◽  
Long Term Monitoring ◽  
Term Monitoring

Testing of two facade modules under outdoor climatic conditions of Central Europe has been performed for more than two years. The paper analyses the results of long-term monitoring and shows potential benefits of prismatic glazing and photovoltaic-thermal (PVT) collectors integrated into one component. The prismatic glazing reflects beam radiation during summer period and transmits it during the winter period. During summer month solar irradiation transmitted through the prismatic glazing can be about 44 % lower compared to conventional triple glazing. Glazed PVT collector generates heat and electricity simultaneously. PVT collector integrated in the façade module can achieve solar yield during summer 58 kWh/m2.month in heat and 6,3 kWh/m2.month in electricity.

scholarly journals Results of a phenological study of the European larch (Larix decidua Mill.) growing in a mixed stand

2013 ◽  
Vol 61 (5) ◽  
pp. 1239-1246 ◽  
Author(s):  
Emilie Bednářová ◽  
Kristýna Slovíková ◽  
Sabina Truparová ◽  
Lucie Merklová
Keyword(s):  
Correlation Coefficients ◽  
Early Spring ◽  
Larix Decidua ◽  
Climatic Conditions ◽  
Mixed Stand ◽  
European Larch ◽  
Phenological Stages ◽  
Air Temperatures ◽  
Soil Temperatures

This paper presents an evaluation of the onset and duration of phenological stages of the European larch (Larix decidua Mill.) growing in a mixed stand in Drahanská vrchovina highlands. It covers the period of 2007–2010 and refers to results obtained in the preceding study period of 1991–2006. In individual years of this study, beginnings and durations of individual phenological stages differed in dependence on climatic conditions. Temperature requirements of European larch regarding the onset of individual phenological stages were evaluated on the base of sums of air temperatures above 0° C and of effective air temperatures higher than +5° C. Obtained results indicate that the onset and duration of spring phenological stages are dependent on air and soil temperatures already in the early spring. As far as the European larch is concerned, the breaking of buds is dependent on temperatures of air and soil; the corresponding correlation coefficients were R2 = 0. 8684 (y = −3.788x + 97.165) and R2 = 0.7627 (y = −6.667x + 101.88), respectively. The obtained results indicate that recently the onset of spring phenological stages occurred earlier and earlier in the study area of Drahanská vrchovina highlands and that their course was also shorter and shorter. In spring months, higher temperatures influence the phenological stage of flushing at most while in the autumn individual phenological stages occur later and later so that the growing season is longer and longer. This finding was corroborated by results of long-term studies.

scholarly journals Long-term monitoring of the thermal insulation properties of building envelope structures in real climatic conditions

2018 ◽  
Vol 415 ◽  
pp. 012031
Author(s):  
Dušan Katunský ◽  
Miloslav Bagoňa ◽  
Richard Baláž ◽  
Martin Lopušniak ◽  
Marián Verta’ ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Climatic Conditions ◽  
Building Envelope ◽  
Long Term Monitoring ◽  
Term Monitoring

Periodicity of the outbreaks of the carrot psyllid (Trioza apicalis) cannot be explained by sunspot activity

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Pavel Láska ◽  
Jan Rogl
Keyword(s):  
Climatic Conditions ◽  
Sunspot Activity ◽  
Long Term Monitoring ◽  
One Year ◽  
Term Monitoring ◽  
Term Fluctuation

AbstractThe periodicity of the fluctuations in the attacks of the carrot psyllid Trioza apicalis in long-term monitoring was studied by analysis of data of previous authors. The occurence of only one generation in the year shows that peaks of attack cannot arise suddenly in one year, but are prolonged over several years, as are the troughs of attack. This is the cause of the long-term fluctuation, which seems to be periodic. The statement of Ozols, that the period of the fluctuations of carrot psyllid was connected with climatic conditions via sunspot activity, was not evident statistically.

Climate change alone cannot explain altered tick distribution across Europe: a spotlight on endemic and invasive tick species.

2021 ◽  
pp. 125-131
Author(s):  
Frederic Stachurski ◽  
Nathalie Boulanger ◽  
Adrien Blisnick ◽  
Laurence Vial ◽  
Sarah Bonnet
Keyword(s):  
Climate Change ◽  
Tick Species ◽  
Large Scale ◽  
External Environment ◽  
Climatic Conditions ◽  
Climatic Impact ◽  
Long Term Monitoring ◽  
The Impact ◽  
Term Monitoring

Abstract The effect of climate on the evolution of tick populations remains difficult to disentangle from other possible causes and undoubtedly varies depending on the region concerned and local tick species. Large-scale, long-term monitoring is, therefore, necessary to accurately assess climatic impact on tick populations. Climate change can alter tick populations, either indirectly by affecting vertebrate host populations or directly by increasing or decreasing their numbers. These ectoparasites, and in particular hard ticks, spend almost their entire life cycle in the external environment, thus climatic conditions influence their activity, viability and distribution. This expert opinion aims to illustrate the impact of climate change, and its association with other variables, on the distribution and abundance of tick populations in Europe using Ixodes ricinus and Hyalomma marginatum as typical examples of endemic and invasive species, respectively.

scholarly journals Long-term monitoring of deficit irrigation regimes on citrus orchards in Sicily

2021 ◽  
Vol 52 (4) ◽  
Author(s):  
Daniela Vanella ◽  
Filippo Ferlito ◽  
Biagio Torrisi ◽  
Alessio Giuffrida ◽  
Salvatore Pappalardo ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Root Zone ◽  
Climatic Conditions ◽  
Water Restriction ◽  
Crop Species ◽  
Long Term Experiment ◽  
Citrus Orchards ◽  
Long Term Monitoring ◽  
Term Monitoring

The study aims to identify the responses of citrus orchards (C. sinensis (L.) Osbeck), grown under typical Mediterranean climatic conditions, to deficit irrigation (DI) regimes applied over more than a decade (2010-2020). In particular, the DI regimes were declined at the study site in terms of sustained deficit irrigation, regulated deficit irrigation, partial drying of the root-zone, with increasing severity of the water deficit, from 25% to 50% of the crop evapotranspiration, using surface and sub-surface micro-irrigation techniques. Long-term monitoring was set up for identifying the main processes acting at the soil-plant-atmosphere continuum (SPAC) level through direct in situ measurements of mass and energy fluxes (i.e., via micrometeorological technique) and the estimation of ETc and transpiration fluxes (i.e., via sap flow method), and the soil-plant-water processes (via geoelectrical techniques). In addition, the main physiological, qualitative, and quantitative parameters were evaluated since the beginning of the experiment. The results of the long-term experiment demonstrated the great adaptability of the crop species to sustain even the highest water reductions without substantial alterations of the main marketable productive and qualitative characteristics, evidencing the importance of controlling the SPAC dynamics for correctly applying the water restriction regimes.

Cetacean strandings in South Australia (1881–2008)

2015 ◽  
Vol 37 (1) ◽  
pp. 51 ◽  
Author(s):  
Tomoyo Segawa ◽  
Catherine Kemper
Keyword(s):  
South Australia ◽  
Climatic Conditions ◽  
Future Research ◽  
Additional Species ◽  
Baleen Whales ◽  
Beaked Whales ◽  
Long Term Monitoring ◽  
Common Dolphins ◽  
Term Monitoring

Long-term monitoring of cetacean strandings is essential for good management. This study updates previous summaries for South Australia by adding up to 20 years of comprehensive data, including results of necropsy examinations. A total of 1078 records were examined. Thirty-one species were recorded: 9 (7% of records) mysticetes, 22 (88%) odontocetes and the rest (5%) unidentified. The number of species new to South Australia did not reach an asymptote, with potential for at least five additional species. Small cetaceans were more frequently recorded after 1990, possibly due to increased reporting effort. Stranding records increased markedly after 1970. Records for all species occurred year-round. Beaked whales stranded primarily during January–April, baleen whales during July–January and common dolphins during February–May. Geographic hotspots were identified and related to upwelling and reporting effort. A necropsy program since 1990 resulted in 315 of 856 records being assigned to a circumstance of death, with anthropogenic circumstances accounting for 42% of these. Known Entanglement (21%, 66 of 315) and Probable Entanglement (12%, 37 of 315) were the most recorded anthropogenic circumstances of death. Future research correlating strandings with oceanographic/climatic conditions may help to explain the documented patterns but first the effects of reporting effort need to be accounted for.

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