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Reproduction of \kur{Achillea millefolium} agg. and \kur{Achillea ptarmica} in meadows and verges
TOMŠOVÁ, Pavla
Several changes in land use during the last 50 years of 20th century had a significant impact on the composition of traditional meadows. The abundance of many plant species typical for traditionally managed meadows has declined. But some of these species have found a refuge in habitats such as field margins and road verges. The aim of this study was to describe how the reproduction success of two related Achillea species A. millefolium agg. and A. ptarmica depends on (i) the particular habitat in which they grow (meadow/verge); (ii) the abundance of pollinators in the study site; and (iii) timing of flowering within the season. Moreover, the longevity of individual flowers of the two taxa has been studied in order assess the width of the time frame the reproduction takes place in. These objectives were achieved by means of measuring plant total seed production and germination as proxies of reproductive success both in meadow and verge populations at the beginning, peak and end of the flowering season of the two species in 2012. The plants were chosen at plots, where concurrently a pollinator survey has been conducted as the part of the broader project. The durations of the male and female phases of individual flowers have been studied in separate experiments.
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The influence of permanent grassland on the water quality
DVOŘÁKOVÁ, Jitka
This bachelor thesis deals with the influence of permanent grassland on the water quality. A list of related terms and historical development of grassland in the Czech Republic is given in the introductory part. The following part describes the way permanent grassland is used in the Czech Republic at present. The main part of the thesis covers the influence of grassland on the water quality and case studies dealing with this issue are mentioned, too. The aim of the thesis is to describe the influence of grassland on the water quality and to highlight the importance of maintaining grassland in our landscape.
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Vliv hospodářských zásahů na změnu v biologické rozmanitosti ve zvláště chráněných územích: Vliv pastvy na biodiverzitu lučních porostů MZCHÚ V CHKO Bílé Karpaty
Masarykova univerzita, Brno ; Mendelova zemědělská a lesnická fakulta, Brno ; Botanický ústav AV ČR, Průhonice ; Univerzita Palackého v Olomouci, Přírodovědecká fakulta ; ZO ČSOP Bílé Karpaty, Veselí nad Moravou ; Malenovský, Igor ; Kment, Petr ; Přidal, Antonín ; Bezděčka, Pavel ; Vincenecová, Karla ; Pechanec, Vilém ; Mládek, Jan ; Jongepierová, Ivana
V poslední době se u vlastníků a uživatelů pozemku v CHKO Bílé Karpaty zvyšuje zájem o údržbu luk pomocí pastvy, která by mohla řešit údržbu hůře dostupných pozemků. Dodnes ale není znám optimální počet a skladba zvířat na plochu a dopad na zájmová rostlinná společenstva. Řešený projekt by měl přispět ke stanovení takových způsobů obhospodařování lučních společenstev, které by z ekonomického hlediska byly pro zemědělské subjekty a vlastníky pozemků přijatelné a současně udržely luční společenstvo v optimálním stavu.
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