Nakládání s lesy se v minulosti řídilo skoro výhradně ekonomickými a sociálními potřebami a poměry. Ty se často dosti měnily jak v průběhu času, tak regionálně. Leccos však fungovalo shodně napříč Evropou. Ve střední Evropě, která zahrnuje prostor od Rýna po východní Karpaty a kontinent severně od Alp, byly způsoby využívání lesa v zásadě všude shodné. Tento článek si klade za cíl stručně přiblížit základní tradiční formy lesního hospodaření ve středoevropském regionu. Představíme důsledky tohoto hospodaření pro les jako ekosystém a prostředí pro život organismů. and In Central Europe, forests were managed using traditional methods until the arrival of modern forestry and later near-natural forestry. Detailed information on forest management is available from the Middle Ages onwards. The two main types of traditional forestry management were coppicing and wood-pasture. They were well-established systems with constant yields of wood and other uses.
Tradiční formy lesního hospodaření měly jiný ekologický dopad než současné metody. Nížinné lesy byly celkově světlejší a živinami chudší, odlišné bylo rozložení světelných fází a hlavních živin v půdě. Původ světlých středoevropských lesů zůstává zatím nedořešenou otázkou, existují aspoň čtyři možná vysvětlení. O to zřetelněji se však jeví potřeba obnovy tradičních forem managementu kvůli ochraně biodiverzity. and Traditional forms of forest management had different ecological impacts than current methods. Lowland woodlands were generally lighter and nutrient poorer, the distribution of light phases and the allocation of major soil nutrients were different. The origins of open forests in Central Europe remain an open question as to which of the at least four explanations apply. The need for the restoration of traditional management forms to conserve biodiversity is all the more evident these days.
Cardiovascular diseases are the most common cause of mortality and morbidity in most populations. As the traditional modifiable risk factors (smoking, hypertension, dyslipidemia, diabetes mellitus, and obesity) were defined decades ago, we decided to analyze recent data in patients who survived acute coronary syndrome (ACS). The Czech part of the study included data from 999 males, and compared them with the post-MONICA study (1,259 males, representing general population). The Lithuanian study included 479 male patients and 456 age-matched controls. The Kazakhstan part included 232 patients and 413 controls. In two countries, the most robust ACS risk factor was smoking (OR 3.85 in the Czech study and 5.76 in the Lithuanian study), followed by diabetes (OR 2.26 and 2.07) and hypertension (moderate risk elevation with OR 1.43 and 1.49). These factors did not influence the ACS risk in Kazakhstan. BMI had no significant effect on ACS and plasma cholesterol was surprisingly significantly lower (P<0.001) in patients than in controls in all countries (4.80 ±1.11 vs. 5.76 ±1.06 mmol /l in Czechs; 5.32 ±1.32 vs. 5.71 ±1.08 mmol /l in Lithuanians; 4.88 ±1.05 vs. 5.38±1.13 mmol /l in Kazakhs/Russians). Results from our study indicate substantial heterogeneity regarding major CVD risk factors in different populations with the exception of plasma total cholesterol which was inversely associated with ACS risk in all involved groups. These data reflect ethnical and geographical differences as well as changing pattern of cardiovascular risk profiles., J. A. Hubacek, V. Stanek, M. Gebauerova, V. Adamkova, V. Lesauskaite, D. Zaliaduonyte-Peksiene, A. Tamosiunas, A. Supiyev, A. Kossumov, A. Zhumadilova, J. Pitha., and Obsahuje bibliografii
Since the beginning of the 19th century, the comparative and ontogenetic branches of developmental physiology were cultivated in our country. Evidence was given that development of the gastrointestinal tract in tadpoles is dependent on the quality of proteins in their food. A complete metamorphosis of Amblystoma mexicanum, was entirely accomplished by feeding with powderized thyroid gland. The definition and chronological delimitation of both the suckling and weaning period in experimental animals opened the investigation of the effect of disturbance of the natural environment caused by premature weaning on the ensuing development of an individual. A new term was coined "late effects of early adaptations". Analysis was provided by impressive research of the development of energetic metabolism and development of gastrointestinal tract functions, water and electrolyte exchange and endocrine functions including the role of the pineal gland in control of circadian rhythms (12 references).
Trafficking of the rhoptry chimeric protein RhopH2-GFP, which contains RhopH2 signal peptide plus the downstream five amino acids, was dissected by treating parasites with Brefeldin A at three different time points. Twenty eight hrs-stage trophozoites accumulated the chimera within the parasite endoplasmic reticulum. In 32 hrs-stage schizonts, the chimera was distributed in the parasite cytoplasm but not in the parasitophorous vacuole. In 36 hrs stage-schizonts, the chimera was detected in the individual parasitophorous vacuoles of the developing merozoites and, in contrary to non-treated parasites, no immature rhoptry vesicles could be detected in the cytoplasm of immature merozoites. These data show that this chimera is trafficked to the rhoptries via Brefeldin A-sensitive pathway indicating that this trafficking is similar to that of the endogenous rhoptry proteins, and that the five amino acids downstream of the signal peptide cleavage site may contain the sorting signal required for rhoptry targeting.