Ecological capacity measures as useful tools for planning land management in lake district: case study Ilavian Landscape Park A. Czarnecki, M. Luc, A. Lewandowska-Czarnecka Nicolaus Copernicus University, Faculty of Biology and Earth Sciences Torun, Poland Abstract For tourism development it is presented an analysis of lake and its catchment ecosystems in a view of natural and anthropogenic conditions and stressors. For socioeconomic reason the research is focused on littoral zone and its assimilation capacity for a wide range of human activities. For sustainable development reason burden below capacity is a necessary condition. Keywords: lake catchment; assimilation capacity; resources management; sustainable development 1 Introduction Among city inhabitants in Poland you may observe a growing interest for leisure and tourism especially in lake districts. This demand meets a need of local societies, whose economics depends on natural resources, to expand their traditional products i.e. food, timber, fish and biomass. Poor job market and decreasing income from traditional activities are the main reasons for creating the exchange for tourist products and services. However, even traditional enterprises engage several environmental issues. In rural areas where the spatial sources are implemented into the economic activities and where products create profiled ecosystem services, inconformity to unchangeable ecosystem functioning may result not only in media abatement [6]. It could also be an obstacle for further economical development. Agriculture and tourism are both intensive branches so looking for rational solution in their coexistence problem must be organized in an aspect of environmental impact [8]. In the research area