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Four production fishponds in the Czech Republic were investigated in 2003 and 2004 during a feeding experiment on common carp (Cyprinus carpio). In 2003, topmouth gudgeon (Pseudorasbora parva) was detected in enormous amounts in all of the investigated fishponds. P. parva got into the fishponds spontaneously by water inflow from connecting channels. The objective of this paper is to describe the condition of natural food in the presence of P. parva and its subsequent effect on carp production. The estimation of the population density of P. parva achieved at least 44 kg ha −1 in 2003. In 2004, precautions against P. parva invasion were taken and its presence wasn't recorded during the season. The impact of P. parva on natural food structure was described in terms of zooplankton and zoobenthos amounts and main fish production parameters. A special focus has been taken on the density of Daphnia genus and chironomid larvae, the most preferred zooplanktonic and zoobenthic groups in feed of P. parva, respectively. In 2003, P. parva suppressed the zooplankton populations significantly, especially large cladocerans of the Daphnia genus. Influence of P. parva on zoobenthos structure and density was not detectable. Unfavorable natural food condition in 2003 caused extremely low carp production which fell to the mean value of 283 kg ha −1 and food conversion ratio reached 3.5. On the contrary, in 2004 the mean carp production and food conversion ratio attained 634 kg ha −1 and 1.6, respectively. The results described harmful competitive effect of huge populations of P. parva and its surprising economic consequences. Costs per 1 kg of growth were increased by approximately 100% in 2003 compared with results from season 2004.

this paper summarizes theoretical knowledge related to an issue of assessment of tourism impacts on a tourism destination. this paper pays special attention to stakeholders' perception of tourism impacts as a popular approach to tourism impacts assessment in recent decades. its aim is to map the key research focused on classification and assessment of tourism impacts in relation to regional stakeholders, using a summary and comparison of various research approaches over the past decades. the paper uses an integrative literature review of 28 papers published in top-rated journals which can be considered as a relevant sample of the research effort from the beginnings of 1990s. it compares commonly used approaches to the classification and assessment of tourism impacts through a comparative content analysis and points out their common characteristics and differences. the secondary aim is to define research implications as a theoretical and methodical basis for future research aimed at this topic.

The presented paper deals with the regionalization of the electoral support of the Czech Pirate Party (Pirates) in regional elections using methods and techniques of spatial data analysis. The aim is to answer the question whether the territorial distribution of Pirate electoral support allows this party to participate in governance at the regional level and thus influence the form of regional policy in individual regions. The results of the analysis show that the spatial distribution of Pirates’ electoral support in regional elections differed quite significantly not only from the pattern found in the elections to the Chamber of Deputies of the Czech Parliament and elections to the European Parliament, but also between individual regional elections. This suggests the current lack of anchorage of Pirates’ electoral support in regional politics, but at the same time, it may have its origins in the second-order character of regional elections and the candidacy of many local and regional entities in regional elections. On the other hand, the results of the regional elections in 2020 meant that the Pirates received seats in all regional councils, but especially in nine of the thirteen regions they joined the regional government (similarly to two years earlier when they joined government of capital city of Prague), gaining the opportunity to influence, with regard to its priorities, the form of regional governance in most Czech regions.

This paper deals with a set of problems related to tourism policy implementation. It emphasises the importance of stakeholder involvement in implementation of tourism policy in tourism destinations. The research is focused on evaluation of tourism policy strategic priorities from the point of view of destination stakeholders in the South Bohemian Region of the Czech Republic. Its objective is to identify key regional stakeholders in the tourism sector and describe their attitudes to co-operation with the South Bohemian Tourism Authority (SBTA) on implementation of the priorities which are described in the tourism development plan. The research uses three-step stakeholder analysis that is based on a three-attribute methodology, and a mix of qualitative and quantitative data gathering techniques. The findings are transformed into a comprehensive graphical output designated for the SBTA and a resulting set of managerial recommendations for better stakeholder involvement in the process of tourism development in the South Bohemian Region. The recommendations point both at involvement of various stakeholder groups by building the relationships between them and the SBTA based on more intensive communication and exchange of information and experience, and engagement of primary stakeholders as intermediaries in a newly established stakeholder network.

A B S T R A C TTourism is considered globally an important tool for regional development. Through its activities and interconnections with other industries it has a strong impact on the whole environment of the destination in the form of different effects on bodies and objects in that environment. Therefore, it appears necessary to manage tourism strategically, with awareness of its effects and impact assessment, under the principles of sustainable development. Tourism development is strongly associated with the overall concept of regional development and especially with the policy of regional development and tourism policy. Good practice examples show that the unregulated and self-acting tourism development has negative impacts to the destination environment that could be appropriately eliminated, or at least regulated, by appropriate management. That is why the principles of management come to the fore, especially the principles of strategic management of destinations. These should bring positive effects in the tourism sector in the form of strategically planned activities based on relevant data, information and knowledge. Also involving regional stakeholders should lead to the sustainable and competitive destination development. These approaches are based on general management overall, however it is often necessary to adapt them in many aspects because of the tourism market specifics. This paper provides an overview of major developmental trends over the past two decades in the field of strategic destination management as an integral part of regional development. Its aim is to identify the main research directions in this area for a defined period, emphasizing the focus on applying strategical managerial approaches and methods in managing a tourist destination. In the concretization of selected approaches deals primarily with the approaches to the management of destinations in relation to the effects resulting from tourism. Using in-depth resources research on tourism effects and impacts, tourism planning and stakeholder engagement in this planning, it focuses on that part of strategic management, which is ranked among relatively newer planning principles for managing a tourist destination. This is also becoming more and more important in emerging tourist areas. The paper summarizes the main directions of research in this area and points out the focus that researchers, academics and managers themselves are interested in.

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Phenotypic plastic responses to temperature can modulate the kinetic effects of temperature on biological rates and traits and thus play an important role for species adaptation to climate change. However, there is little information on how these plastic responses to temperature can influence trophic interactions. Here, we conducted an experiment using marbled crayfish and their water louse prey to investigate how short‐term thermal acclimation at two temperatures (16 and 24°C) modulates the predator functional response. We found that both functional response parameters (search rate and handling time) differed between the two experimental temperatures. However, the sign and magnitudes of these differences strongly depended on acclimation time. Acclimation to 16°C increased handling time and search rate whereas acclimation to 24°C leads to the opposite effects with shorter handling time and lower search rate for acclimated predators. Moreover, the strength of these effects increased with acclimation time so that the differences in search rate and handing time between the two temperatures were reversed between the treatment without acclimation and after 24 h of acclimation. Overall, we found that the magnitude of the acclimation effects can be as strong as the direct kinetic effects of temperature. Our study highlights the importance of taking into account short‐term thermal plasticity to improve our understanding of the potential consequences of global warming on species interactions.