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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Advances in ecological modelling of soil properties by self-organizing feature maps of natural environment of Lower Silesia [Poland]

100%
Stankiewicz A., Kosiba P.
Acta Societatis Botanicorum Poloniae
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2009
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tom 78
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nr 2
167-174
The paper provides the use of self-organizing feature maps for determination of soil properties in its initial stage of development formed of massive rocks and how SOFM can be used for the study of environmental objects. The study area was Lower Silesia (Poland) overgrown with common, unique and protected vegetation of lichens, bryophytes and vascular plants. The parent rock of the studied soils consists of Miocene volcanites from the middle part of the Sudety Margin Fault. Soil samples were collected from 20 sites. The soil reaction (pH) and concentrations of Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, S, Ti, Zn in surface soils were analyzed. Statistical analysis was carried out by one-way ANOVA. The SOFM was used to demonstrate the non-linear ordination and visualization of soil properties. The SOFM showed the influence of parent rock on soil chemical properties generated by it. SOFM appeared to be effective and proper/fit for phenomena and processes taking place in natural environment and is useful in ecology and ought to be taken into account as a possible tool of estimation of various plants and their biotopes. The model can be useful as alternative techniques in modelling the ecological complex data, and provide a novel framework for the discovery and forecasting of ecosystem structure and behaviours in response to environmental changes.
2
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Modelling of habitat conditions by self-organizing feature maps using relations between soil, plant chemical properties and type of basaltoides

84%
Kosiba P., Stankiewicz A., Mroz L.
Acta Societatis Botanicorum Poloniae
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2010
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tom 79
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nr 4
The paper shows the use of Kohonen's network for classification of basaltoides on the base of chemical properties of soils and Polypodium vulgare L. The study area was Lower Silesia (Poland). The archival data were: chemical composition of types of basaltoides from 89 sites (Al2O3, CaO, FeO, Fe2O3, K2O, MgO, MnO, Na2O, P2O5, SiO2 and TiO2), elements contents in soils (Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, S, Ti and Zn) and leaves of P. vulgare (Ca, Cd, Co, Cu, Fe, K, Mg, Mn, Mo, N, Ni, P, Pb, S, Ti and Zn) from 20 sites. Descriptive statistical parameters of soils and leaves chemical properties have been shown, statistical analyses using ANOVA and relationships between chemical elements were carried out, and SOFM models have been constructed. The study revealed that the ordination of individuals and groups of neurons in topological maps of plant and soil chemical properties are similar. The constructed models are related with significantly different contents of elements in plants and soils. These models represent different chemical types of soils and are connected with ordination of types of basaltoides worked out by SOFM model of TAS division. The SOFM appeared to be a useful technique for ordination of ecological data and provides a novel framework for the discovery and forecasting of ecosystem properties.
3
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Assessment of habitat conditions using Self-Organizing Feature Maps for reintroduction/introduction of Aldrovanda vesiculosa L. in Poland

67%
Kosiba P., Mroz L., Kaminski R.
Acta Societatis Botanicorum Poloniae
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2011
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tom 80
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nr 2
The study objects were Aldrovanda vesiculosa L., an endangered species and fifty five water sites in Poland. The aim of the present work was to test the Self-Organizing Feature Map in order to examine and predict water properties and type of trophicity for restoration of the rare plant. Descriptive statistical parameters have been calculated, analysis of variance and cluster analysis were carried out and SOFM model has been constructed for analysed sites. The results of SOFM model and cluster analysis were compared. The study revealed that the ordination of individuals and groups of neurons in topological map of sites are similar in relation to dendrogram of cluster analysis, but not identical. The constructed SOFM model is related with significantly different contents of chemical water properties and type of trophicity. It appeared that sites with A. vesiculosa are predominantly distrophic and eutrophic waters shifted to distrophicity. The elevated model showed the sites with chemical properties favourable for restoration the species. Determined was the range of ecological tolerance of the species in relation to habitat conditions as stenotopic or relatively stenotopic in respect of the earlier accepted eutrophic status. The SOFM appeared to be a useful technique for ordination of ecological data and provides a novel framework for the discovery and forecasting of ecosystem properties constituting a validation of the SOFM method in this type of studies.
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Modelling the interplay of environment, economy and resources in Marine Protected Areas. A case study in Southern Italy

67%
Franzese P. P., Russo G. F., Ulgiati S.
Ecological Questions
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2008
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tom 10
In order to improve environmental management and policy making based on the principles of sustainable development it is necessary to explore both ecological and economic dynamics interacting in human-dominated ecosystems. A way to perform such an integrated assessment is provided by the Emergy Synthesis method that allows to account for mass, energy and money flows supporting a given ecosystem. In this paper Geographical Information System and Emergy Synthesis methods were combined to model the interplay of environment, economy, and resources in the Site of Community Interest named Parco Marino di S. Maria di Castellabate and located in Southern Italy. The GIS allowed to organize and explore data dealing with several environmental features while the emergy modelling and accounting provided a characterization of the energy metabolism of the study area.The solar transformity of the net primary production of the marine system resulted in 4.86·104 seJ Joule-1. The emergy cost for fish and mollusk (two of the main products of the fishing sector) resulted in 1.05·107 seJ Joule-1 and 2.43·107 seJ Joule-1, respectively. These emergy-based indicators provided information about the environmental performance of the marine ecosystem and its fishing economic sector by relating the input emergy invested into the processes with the generated outputs.The solar transformities calculated in this case study (one of the first ever performed in Italy by adopting this methodological approach) will provide a benchmark for future comparison with similar marine systems in Italy and abroad.In conclusion, the combined use of GIS and Emergy Synthesis methods resulted a promising approach able to provide a deeper understanding of human-managed ecosystems and their dynamics.
5
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Beyond salty reins – modelling benthic species' spatial response to their physical environment in the Pomeranian Bay (Southern Baltic Sea)

67%
Glockzin M., Gogina M., Zettler M. L.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
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2009
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tom 13 part II
The brackish water environment of the Baltic Sea is dominated by a strong gradient of salinity and along with salinity the benthic diversity decreases – salinity is regarded as the master factor regulating benthic diversity in brackish habitats. In this scheme, consistently small patches of comparatively higher or lower benthic diversity do emerge in areas where either environmental or anthropogenic impacts on the benthic habitat change drastically over short spatial distances. Hence, spatial diversity of ecological factors creates diversity among benthic colonization and community structures. We show through a logistic modeling approach the possibility to predict thereby induced benthic colonization areas and community structures inside the broad scheme of a brackish water habitat. This study bases upon quantitative macrozoobenthic abundance data collected over a period of 4 years. It clearly demonstrates the need to analyze species’ relationships in gradient systems such as the Baltic Sea and provides a tool to predict natural and anthropogenic forced changes in species distribution.
6

Species-area relationships of plant communities and the possibility of predicting plant species diversity - a case study in South-Western Poland

67%
Swierkosz K.
Acta Botanica Silesiaca. Monographiae
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2009
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tom 05
7
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Water trophicity of Utricularia microhabitats identified by means of SOFM as a tool in ecological modeling

67%
Kosiba P., Stankiewicz A.
Acta Societatis Botanicorum Poloniae
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2007
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tom 76
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nr 3
The study objects were 48 microhabitats of five Utricularia species in Lower and Upper Silesia (POLAND). The aim of the paper was to focus on application of the Self-Organizing Feature Map in assessment of water trophicity in Utricularia microhabitats, and to describe how SOFM can be used for the study of ecological subjects. This method was compared with the hierarchical tree plot of cluster analysis to check whether this techniques give similar results. In effect, both topological map of SOFM and dendrogram of cluster analysis show differences between Utricularia species microhabitats in respect of water quality, from eutrophic for U. vulgaris to dystrophic for U. minor and U. intermedia. The used methods give similar results and constitute a validation of the SOFM method in this type of studies.
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