The distribution of blackberry (Rubus hirtus W. K.) in different scales: the fractal analysis
Distribution of blackberry (Rubus hirtus W.K.)
Polish Academy of Sciences. Institute of Ecology
Polish Academy of Sciences. Institute of Ecology. Publishing Office
Pages 225-235 : illustrations ; 27 cm
Bibliographical references (pages 234-235)
The scale dependence of natural patterns provides an opportunity to apply fractal geometry to diverse problems in "spatial" ecology so as to integrate the spatial and temporal characteristics of complex environments. In this paper I attempt to explore the scaling dependency of in an autecological study on blackberry across a range of scales by applying fractal theory. The fractal dimension of: the blackberry (Rubus hirtus W. K.) distribution within its geographical range is 1.44 ± 0.02; the pattern in the Gorce National Park (5908 ha) is 1.47 ± 0.05; the pattern for Łopuszna Valley (49°34'N, 20°08'E) (185.86 ha) is 1.30 ± 0.09 and 1.32 ± 0.05 for the Ratanica watershed (49°51 'N, 20°02'E) ( 121.76 ha) (Fig. 1 ); the distribution of blackberry within the six plots located within the Ratanica watershed has values: 1.21 ± 0.09 to 1.45 ± 0.06. On the gap plot, located within Ratanica watershade, created in 1987, year the fractal dimension of blackberry distribution increased from 1.21 ± 0.16 to 1.60 ± 0.04 during 5 successive years (Fig. 2). In the same region, on plot located under the dense forest, D of blackberry distribution has not changed and reached value 1.28 ± 0.05. This study demonstrates that the distribution pattern is heavily influenced by scale. There are no possibilities to detect any breakpoint at scale intervals within the range of spatial scales studied, because the study of pattern was carried out on a noncontinuous scale (Fig. 4).
Polish Journal of Ecology
MiIZ PAN, call no. P.2840
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Ekologia Polska (1953-2011)
Ekologia Polska, późn. tyt.: Polish Journal of Ecology (t. 1-51)
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Nr 1. Intrapopulation differentiation in black mutants of Tribolium / Prus T.
Nr 1. Response of stored product pest life strategy to chemical treatment: effect of tricalcium phosphate (TCP) on Tribolium strains (T. castaneum Herbst and T. confusum Duval) / Prus M.
Nr 1. Nest-site characteristic of Great Spotted Woodpecker Dendrocopos major in central Poland / Mazgajski T. D.
Nr 1. Influence of species composition and forest age on leaf area index / Kram K. J.
Nr 1. Eutrophication and winter-period structure of phytoplankton in three deep lakes in the Łęczna-Włodawa Lakeland, eastern Poland / Wojciechowska W., Pęczuła W., Zykubek A.
Nr 2. The influence of natural and experimental disturbances on emergence and survival of seedlings in an oak-linden-hornbeam (Tilio-carpinetum) forest / Pirożnikow E.
Nr 2. Life cycle of herbaceous plants in disturbed and undisturbed sites of oak-linden-hornbeam forest (Tilio-carpinetum) / Pirożnikow E.
Nr 2. Long-term changes in the abundance and mass of the main tree species in beechwood and fir forest communities of Roztoczański National Park (East-Central Poland) / Maciejewski Z.
Nr 2. Individuals adjust their body reserves to dominance position within mixed flocks of the wilow (Parus montanus) and the crested tit (P. cristatus): a field experiment / Krams I.
Nr 3. The distribution of blackberry (Rubus hirtus W. K.) in different scales: the fractal analysis / Gazda A.
Nr 3. Long term changes (15 years) of Collembola communities on drained fens / Kaczmarek M.
Nr 3. The carabid communities of natural and drained peatlands in the Biebrza Valley, NE Poland / Olejniczak I.
Nr 3. The parasitic Hymenoptera in a beech forest on limestone. 1, Species composition, species turnover, abundance and biomass / Ulrich W.
Nr 3. The parasitic Hymenoptera in a beech forest on limestone. 2, Study of the sex ratios and their dependence on ecological factors / Ulrich W.
Nr 3. The parasitic Hymenoptera in a beech forest on limestone. 3, The role of leaf litter for the parasitoid species / Ulrich W.
Nr 3. Chlorophyll - nutrients - Secchi disc relationships in the Great Mazurian Lakes (North-Eastern Poland) / Kufel L.
Nr 4. Humic lakes: functioning, protection, endangering, recovery / Hillbricht-Ilkowska A.
Nr 4. Study lake and results of experimental liming in 70-ties. Aim ad scope of present studies / Hillbricht-Ilkowska A.
Nr 4. Methods / Hillbricht-Ilkowska A.
Nr 4. Long term changes in water chemistry / Hillbricht-Ilkowska A., Kufel I.
Nr 4. Thermal and oxygen stratification, primary productivity, decomposition rate and chlorophyll concentration / Rybak J. I.
Nr 4. Long term changes of phytoplankton composition and biomass / Jasser I.
Nr 4. Vascular plants, periphyton and filamentous algae / Ozimek T.
Nr 4. Long term changes in composition, diversity and abundance of zooplankton / Ejsmont-Karabin J., Węgleńska T.
Nr 4. Discussion: effects of moderate liming of a humic lake / Hillbricht-Ilkowska A.
Nr 4. Summary and conclusion / Hillbricht-Ilkowska A.
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Ekologia Polska, późn. tyt.: Wiadomości Ekologiczne (t. 1-57)