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    Wyświetlanie 1-2 z 2
    Tytuł:
    Użyteczność danych o lasach udostępnianych w serwisie OpenStreetMap
    Usability of the OpenStreetMap forest data
    Autorzy:
    Bielecka, E.
    Leszczyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/986666.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy
    zrodla danych
    serwis OpenStreetMap
    kompletnosc danych
    wiarygodnosc
    forest
    osm
    spatial data quality
    completeness
    location accuracy
    Opis:
    OpenStreetMap (OSM) is a collaborative project covering the whole World with topographic data. Data are edited by volunteer users on the basis of satellite images, ortophotomaps and GPS traces, therefore are of diversified quality, especially completeness and positional accuracy. The aim of this study was to evaluate the usability of OSM forest data for Poland. We proved that positional accuracy, expressed by RMSE that equals to 16 m, was comparable with the national topographic data at the scale 1:10 000. However 3.5% of the outliers were noticed, for which the positional accuracy amounted to about 300 m. The completeness of the OSM data in May 2017, computed on the basis of Czekanowski matching feature area−based completeness index, equalled 86% and was still increasing. The lowest value of the completeness was observed for lubuskie voivodeship (76.4%), while the highest (92.5%) for zachodniopomorskie. For ten voivodeships the completeness of forest cover was greater than national average. In general, there were only a few forest polygons with their name or other pertinent characteristics like tree type (coniferous/deciduous) attributed by the editors. Logical consistency was nearly perfect as only 5.8% of the polygons were topologically incorrect. Forest definition as ‘an area dominated by trees’, is very similar in national topographic data and in OSM, both are based on physical characteristics of the surface of the Earth. Contrary to the national spatial data, OSM data are constantly updated, free and available without restrictions. It constitutes valuable alternative data source for all users. However, the heterogeneity of these data should also be kept in mind, while they are used in analysis and decision process support.
    Źródło:
    Sylwan; 2018, 162, 06; 460-468
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ile gatunków grzybów rośnie w Puszczy Białowieskiej? Wystawy grzybów źródłem nowych danych
    How many fungal species grow in the Bialowieza Forest? Exhibitions of fungi as a source of new data
    Autorzy:
    Kujawa, A.
    Szczepkowski, A.
    Gierczyk, B.
    Ślusarczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/985939.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    mikologia
    grzyby
    Ascomycota
    Basidiomycota
    roznorodnosc gatunkowa
    gatunki rzadkie
    zrodla danych
    wystawy przyrodnicze
    ascomycota
    basidiomycota
    fungi
    biodiversity
    rare species
    protected species
    Opis:
    Mycological data published in the years 2012−2017 in six papers on the exhibitions of fungi of the Białowieża Forest (NE Poland) was analysed to demonstrate that incidental, few days long field studies in that region may provide interesting and valuable data on fungal diversity and richness. The discussed papers, in addition to the lists of species presented, include information on some interesting taxa collected during the preparation of the exhibitions. This data complements the knowledge on the fungal biota of the Białowieża Forest and is documented by the herbarium specimens. There are 865 macrofungal taxa (72 of Ascomycota and 793 of Basidiomycota) mentioned in these papers. Almost half of them (421 taxa) were particularly valuable fungi, with 239 being new for the Białowieża Forest, i.e. they had not been reported from this area earlier. 75 taxa found during the field work preceding the exhibitions had not been found in Poland previously (e.g. Chromosera cyanophylla, Clitocybe collina, Cortinarius talimultiformis, Cystoderma subvinaceum). Moreover, 67 taxa have not been so far reported from other localities in Poland (e.g. Amylocystis lapponica, Pycnoporellus alboluteus and Steccherinum tenuispinum). 15 fungal species collected before the exhibitions are protected in Poland, 6 of them are strictly protected. 185 red−listed fungi were also found, among them 1 species with Ex (extinct) category (Scytinostroma galactinum) and 61 with E (endangered) category (e.g. Pholiota squarrosoides, Punctularia strigosozonata, Rigidoporus crocatus). An analysis of the published data indicates that even short−term, incidental studies may provide important and valuable data on the fungi of the Białowieża Forest and that the potential richness of its mycobiota is much higher than previously recognised and estimated. Presented results confirm the need for further basic research on the biodiversity of macrofungal biota of the Białowieża Forest. It should involve application of new research methods, participation of taxonomists specializing in specific fungal groups, identification of threats and establishing of a conservation program and population monitoring of the most valuable species in this area.
    Źródło:
    Sylwan; 2018, 162, 11; 933-940
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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