Excessive tourist traffic concentration in cities of high tourist attractiveness often leads to overtourism, manifested, among others, by overcrowding in appealing areas and means of transport, rising prices, or degradation of natural and cultural resources. The effects of an excessive number of tourists include an unfavourable change in the local community's attitude towards tourists. The paper determines the extent and forms of overtourism symptoms in Wrocław, Poland. The research allowed for the identification of negative and positive effects of tourist traffic in Wrocław as perceived by three groups of respondents: experts, Wrocław residents: key experts from the scientific, administrative, planning, and business communities; people directly involved in tourist services; and students of tourism. The crucial part was direct research, conducted in November 2019 with a questionnaire technique. The results confirm symptoms of overtourism in Wrocław, but the threat is not significant. The article shows specific potential overtourism threat factors; the respondents' opinions did not significantly differ between the groups. The presented findings and conclusions may be useful in developing the tourism policy of this and other cities, especially regarding sustainable development of tourism and the potential threat imposed by overtourism. The methodology may be used in similar comparative studies in other cities.

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The aim of the paper was to identify the potential impact of ecotourism on tourism market participants. The methodology was based on the research of literature on ecotourism and tourism market, debate, and own reflection. The results prove that ecotourism significantly influences the awareness and attitudes of tourism market participants. It can serve as a tool to facilitate an alliance between tourism and the natural environment. Ecotourism can provide multidimensional advantage to tourists, entrepreneurs, inhabitants, and the nature itself. The paper indicates the directions of further research on ecotourism.

This article considers the influence of ecotourism, a fast-developing form of tourism, on an important area in the functioning of the tourism market, which is the behaviour of its participants. The aim of the article is to present the way in which the developing concept and principles of ecotourism can affect the behaviour of consumers (tourists) and the activity of tour operators (providers of tourism services). The authors propose a unique research approach which consist in addressing both the expectations on the part of tourists as well as those related to business targets of the tourism industry. This article presents conceptual framework and outlines methodical approach which can be useful for the future research. Twelve types of behaviour regarding both tourists and tour operators were distinguished, followed by a description of the character of the possible influence of ecotourism on each of them. In this way the article also presents an outline of a new approach to managing business (including market relations), taking into consideration the growing popularity and importance of ecotourism.