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Abstract: Balthasar Hacquet, zdravnik, botanik, mineralog, geolog in etnolog, je v slovenskem znanstvenem prostoru premalo poznan. V času svojega delovanja na Slovenskem je pomembno prispeval k razvoju naravoslovja, botanike, mineralogije in alpinizma. Hacquet je bil izrazit razsvetljenec svojega časa in kritičen mislec. Lahko rečemo, da je Hacquet, ki je večino svojega življenja preživel na Kranjskem, glavni raziskovalec v 18. stoletju pri nas. Posebno skrb je namenil zdravljenju zastrupitev z živim srebrom rudarjev v Idriji, saj je tam opravljal službo rudniškega zdravnika, kirurga. Ves prosti čas je porabil za vsestransko raziskovanje kranjske dežele in njene okolice. Izredno pozornost je posvečal planinski flori in tako dopolnjeval Scopolijeve izsledke. Med ljudstvom je pozorno opazoval narodne običaje, ljudsko nošo in gospodarsko delo.
Keywords: Botanika, Scopoli, Balthasar Hacquet, Kranjska, idrijski rudnik, raziskovanja.
Published in DKUM: 13.09.2016; Views: 1608; Downloads: 165
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Abstract: A draft history of the artificial Stjuža coastal lagoon was reconstructed on the basis of old maps (1804 and 1873); and compared with the present-day situation using GIS. The current data were simplified to obtain comparable caregories (landscape units) with old maps. The following major landscape units were distinguished: lagoon, salt marshes, mainland, brackish rivers and estuaries, ditches and canals, salt-pans, embankment, villages and roads. On current map, a total of 47 habitat types according to PHYSIS typology occurring in 206 polygons, which cover an area of 41.6 ha, were identified and described. Habitats with greater nature-conservancy value cover 26.7 ha of the total research area and constitute 40% of the polygons described. 55.6% of these belong to halophilous scrubs - Sarcocornetea fruticosi (= Arthrocnemetea fruticosi) - and 25.9% to annual salt pioneer sward communities, dominated by Salicornia europaea. Mediterranean salt swamps (Juncion maritimi) are present to a small extent only. It could be concluded that the artificial Stjuža lagoon, constructed for fish farming purposes, developed in habitat diverse coastal wetland area after partial abandonment.
Keywords: botanika, vegetacija, biogeografija, obalna laguna, habitatni tipi, kartiranje, obmorska mokrišča, Slovenija, botany, biogeography, vegetation, coastal lagoon, habitat types, Slovenia, mapping, wetlands
Published in DKUM: 10.07.2015; Views: 1787; Downloads: 55
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Abstract: Vegetation of the silicicolous grasslands of the highlands of North-Eastern Slovenia has been sampled with standard Braun-Blanquet procedure. All the 102 collected releves have been classified within the order Nardetalia Oberd. ex Preising 1949. The association Homogyno alpinae-Nardetum Mráz 1956 (all. Nardo-Agrostion tenuis Sillinger 1933) has been stated, inside which the typical form and the transitional forms to the heaths with Ericaceae have been distinguished. Chorology, life forms and spontaneous reforestation are discussed and nature-conservancy issue is mentioned.
Keywords: botanika, fitocenologija, silikatna travišča, Slovenija, severovzhodna Slovenija, Twinspan, Pohorje, Kozjak, Smrekovec, botany, phytocenology, silicicolous grasslands, Slovenia, Twinspan, Pohorje, Kozjak, Smrekovec
Published in DKUM: 10.07.2015; Views: 1293; Downloads: 48
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Abstract: In this paper, floristic and functional approaches to the classification of different types of sub-Mediterranean illyrian grasslands of the association Danthonio-Scorzoneretum villose lalliance Scorzonerion villosae, order Scorzoneretalia villosae, class Festuco-Brometea) are compared. The data set includes table with 30 relevés from SW Slovenia, sampled in two contrasting geological bedrocks - flysch and limestone - and matrix with 18 treits determined for 119 plant species. We also tested an impact of different geological bedrock on the relative proportions of C-S-R plant strategies in the relevés. With DCA ordinetion, relevés from limestone and flysch were clearly divided in two groups. First DCA axis suggested a gradient of soil humidity and pH. On the basis of selected traits, 5 Plant Functional Types were clustered and interpreted with Twinspan analysis. PCA ordination of relevés on the basis of plant functional traits revealed that samples from limestone could be separated from those taken on flysch substrate also with functional approach. Reievés from limestone tend to have bigger shares of species, which propagate by seed and vegetatively, and competitors and herbs. Nevertheless, it could be concluded that there are no major functional differences between meadows from both geological substrates. The positions of all relevés in standard C-S-R temary diagram showed that that the relative proportions of C-S-R functional types were not influenced by different geological bedrock.
Keywords: botanika, vegetacija, travišča, suhi travniki, rastlinski funkcionalni tipi, severni Jadran, C-S-R strategije rastlin, botany, biogeography, vegetation, grasslands, dry grasslands, classifcation, North Adriatic, C-S-R plant strategy
Published in DKUM: 10.07.2015; Views: 1681; Downloads: 41
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Keywords: botanika, redke vrste, areali, izbira habitata, Slovenija, botany, rare species, distributional ranges, habitat preferences, Slovenia, Istria
Published in DKUM: 10.07.2015; Views: 1907; Downloads: 40
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