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Human interaction with nature represents one of the basic pillars of healthy behavior. This can be strengthened by physical activity (PA) in nature, also called green exercise or outdoor PA. The aim of the work is to assess the impact of PA in nature on selected psychologically beneficial aspects of mental health. Subsequently, the paper discusses the following questions: 1) Are there any differences...
The aim of this study was to determine floristic diversity, the chemical composition, nature value and energy value of selected sedge communities in view of habitat conditions in the Noteć valley. This study was based on a total of 46 relevés prepared according to Braun-Blanquet. The identified communities were represented by common plant associations, both natural or semi-natural. They comprised...
Geosites are places of particular importance for understanding history of the Earth. An example of such a place may be the Łuków site with fossil Ferdynandovian flora. The development of vegetation covers over 140 000 years of Pleistocene in this reference profile. The Łuków profile is one of only a few European complete profiles, in which two Ferdynandovian interglacial climatic optima are recorded...
Volcanism has both positive and negative effects. The limitation of the latter ones is admittedly difficult, however, depending on the strength and frequency of events and opportunities for the communities living in these areas is real, and the steps undertaken by them are varied. Despite the risks of inhabiting the regions of active volcanism these areas are densely populated. In the endangered areas...
Geobotanical studies conducted in spring in 2011–2012 in the Zagórów polder washland, covered by the ecological restoration programme, provided assessment of current nature value of plant communities and indicated potential directions of their further transformations as a result of changes in habitat water content levels. Based on the analyses of 77 relevés of 50–100 m2 each, prepared following the...
For a herbaceous species, the inverse of the fresh leaf surface density, the Hughes constant, is nearly conserved. We apply the Hughes constant to develop an absolute method of leafarea measurement that requires no regression fits, prior calibrations or oven-drying. The Hughes constant was determined in situ using a known geometry and weights of a sub-set obtained from the fresh leaves whose areas...
This paper presents the process of creation of the Wzgórza Strzelińskie (Strzelin Hills) Natural-Landscape Complex. It describes the rationale, the idea and the process of consultations and work on the resolution to establish the Complex, from the concept, through consultations to the adoption of the resolution. The paper discusses elements of natural and cultural values of the Complex that were the...
When searching for nature rules we encounter a fundamental difficulty: for technical reasons we are not able to investigate the whole Nature - we have to explore its sections i.e. empirical systems (structures). However, even then it might happen that the system is too complex and its comprehensive, direct investigation is impossible. In this case we can study the system by means of its abstract model...
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