Nedílnou součást meteorologického a klimatologického výzkumu představují pozorování a měření stavu atmosféry. Příroda je jedna velká laboratoř, v níž se neustále dějí experimenty - ale zatímco lze ve standardních laboratořích experimenty připravovat a opakovat, příroda nic neopakuje a nezměřená data již nelze znovu získat. and Zbyněk Sokol.
This chapter is aimed at describing the relationship between individual rights and climate change agenda in the Czech Republic. Firstly, the authors provide a brief description of the Czech framework policy for climate change adaptation and specific acts dealing with the climate change. After that, the means of judicial protection in climate change disputes are analysed, with a particular emphasis on the role of administraitve courts. For better understanding, the authors present the most significant decisions of the Czech courts. They conclude that the courts may provide relatively effective protection against both public and private actors. however, climate change is still a new topic with which the applicants have not yet learned to work. In some cases, which are primarily concerned with other issues such as air pollution, climate change serves more as a supporting than a stand-alone argument. This is not likely to change any time soon, because the country is not affected by climate change to the degree it would be forced to act and immediate action would be deemed necessary. Moreover, the judicial review of the state policies is not allowed, even though at the governmental level, short-term economic goals are clearly preferred to the environmental agenda., Vojtěch Vomáčka, Ilona Jančářová., and Obsahuje bibliografické odkazy
Pokles kyselé atmosférické depozice od 90. let minulého století a rovněž postupné oteplování klimatu bylo prokazatelně doloženo i pro horské ekosystémy v nejvyšších slovenských pohořích. Výzkumy epigeické aktivity mnohonožek (Diplopoda) v letech 1992-1993, 1997-1998, 2007-2008 a pokračující sledování v současnosti svědčí o rozmanitosti společenstev těchto půdních bezobratlých včetně přítomnosti řady karpatských endemitů v závislosti na odlišném geologickém podloží (žula a vápenec) a typu vegetace. Pozorovaný ústup chladnomilných endemitů i nárůst podílu eurytopních adaptabilních druhů lze dávat do souvislosti s probíhajícími změnami v chemismu půd i změnami klimatu., The decline of acid deposition since the 1990s, together with subsequent climate warming, was confirmed also for mountain ecosystems in the highest Slovak mountains. The study of epigeic activity of millipedes (Diplopoda) in the periods 1992-93, 1997-98 and 2007-08, and continuing recent research refer to the high diversity of their communities including the presence of Carpathian endemic species on different geological bedrocks (granite and limestone) as well as different vegetation covers. The observed decline of cold tolerant endemics and the increasing portion of eurytopic species may be connected with changes in soil chemistry as well as with climate changes., and Karel Tajovský.
Současné klimatické změny jsou charakterizovány především růstem průměrné roční teploty vzduchu. Teplota půdy, i když není shodná s teplotou vzduchu, odráží dlouhodobý vývoj teploty vzduchu, teplotní změny na povrchu Země pak pronikají do hloubky. Vzhledem k malé teplotní vodivosti hornin je podzemní odezva na tyto změny pomalá a teplotní pole si uchovává jistou "vzpomínku" na to, co se odehrálo na povrchu v minulosti. Současná přesná měření teploty ve vrtech tak umožňují rekonstruovat klimatické změny a geotermická inverze teplotních profilů se stala novou metodou paleoklimatického modelování., Vladimír Čermák, Jan Šafanda, Milan Krešl, Petr Dědeček., and Obsahuje seznam literatury
Earth’s climate has experienced notable changes during the past 50-70 years when global surface temperature has risen by 0.8°C during the 20th century. This was a consequence of the rise in the concentration of biogenic gases (carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, and ozone) in the atmosphere that contribute, along with water vapor, to the so-called ‘greenhouse effect’. Most of the emissions of greenhouse gases have been, and still are, the product of human activities, namely, the excessive use of fossil energy, deforestations in the humid tropics with associated poor land use-management, and wide-scale degradation of soils under crop cultivation and animal/pasture ecosystems. General Circulation Models predict that atmospheric CO2 concentration will probably reach 700 μmol(CO2) mol-1. This can result in rise of Earth’s temperature from 1.5 to over 5°C by the end of this century. This may instigate 0.60-1.0 m rise in sea level, with impacts on coastal lowlands across continents. Crop modeling predicts significant changes in agricultural ecosystems. The mid- and
high-latitude regions might reap the benefits of warming and CO2 fertilization effects via increasing total production and yield of C3 plants coupled with greater water-use efficiencies. The tropical/subtropical regions will probably suffer the worst impacts of global climate changes. These impacts include wide-scale socioeconomic changes, such as degradation and losses of natural resources, low agricultural production, and lower crop yields, increased risks of hunger, and above all waves of human migration and dislocation. Due to inherent cassava tolerance to heat, water stress, and poor soils, this crop is highly adaptable to warming climate. Such a trait should enhance its role in food security in the tropics and subtropics., M. A. El-Sharkawy., and Obsahuje bibliografii
Most studies of responses of insects to elevated carbon dioxide have been made using short-term exposures to treated food plants and have involved measurements of responses in growth, reproduction, food consumption and efficiencies of conversion at specific stages in the life cycle. These will be reviewed in the light of longer-term studies recently published where whole generations have been reared in chambers with simultaneous treatment of plants and where insects have been free to select their food and microenvironment. Factors such as seasonal change in plants, choice of food plant, mode of feeding, timing of exposure, temperature, the role of natural enemies are considered and the whole placed in the context of other aspects of climate change.
It is concluded that in studies to date, the only feeding guild in which some species have shown increases in population density in elevated carbon dioxide are the phloem feeders. Chewing insects (both free-living,and mining) generally have shown no change or reduction in abundance, though relative abundance may be greatly affected. Compensatory feeding is common in these groups., John B. Whittaker, and Lit
Climate change may facilitate shifts in the ranges and the spread of insect pests, but a warming climate may also affect herbivorous insects adversely if it disrupts the locally adapted synchrony between the phenology of insects and that of their host plant. The ability of a pest species to colonize new areas depends on its ability to adjust the timing of phenological events in its life cycle, particularly at high latitudes where there is marked seasonality in temperature and day length. Here we incubated eggs of three species of geometrid moth, Epirrita autumnata, Operophtera brumata and Erannis defoliaria from different geographical populations (E. autumnata and O. brumata from Northern Finland, E. autumnata and E. defoliaria from Southern Finland and all three species from Germany) in a climate chamber at a constant temperature to determine the relative importance of geographic origin in the timing of egg hatch measured in terms of cumulative temperature sums (degree days above 5°C, DD5); i.e. the relative importance of local adaptation versus phenotypic plasticity in the timing of egg hatch. In all three species, eggs from northern populations required a significantly lower temperature sum for hatching than eggs from southern populations, but the differences between them in temperature sum requirements varied considerably among species, with the differences being largest for the earliest hatching and northernmost species, E. autumnata, and smallest for the southern, late-hatching E. defoliaria. In addition, the difference in hatch timing between the E. autumnata eggs from Southern Finland and Germany was many times greater than the difference between the two Finnish populations of E. autumnata, despite the fact that the geographical distances between these populations is similar. We discuss how these differences in hatching time may be explained by the differences in hatch-budburst synchrony and its importance for different moth species and populations. We also briefly reflect on the significance of photoperiod, which is not affected by climate change. It is a controller that works parallel or in addition to temperature sum both for egg hatch in moths and bud burst of their host plants., Julia Fält-Nardmann, Tero Klemola, Mechthild Roth, Kai Ruohomäki, Kari Saikkonen., and Obsahuje bibliografii