Iskanje po katalogu digitalne knjižnice

Opis: 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.
Ključne besede: botanika, vegetacija, biogeografija, obalna laguna, habitatni tipi, kartiranje, obmorska mokrišča, Slovenija, botany, biogeography, vegetation, coastal lagoon, habitat types, Slovenia, mapping, wetlands
Objavljeno v DKUM: 10.07.2015; Ogledov: 1780; Prenosov: 50
Povezava na celotno besedilo

Opis: 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.
Ključne besede: botanika, fitocenologija, silikatna travišča, Slovenija, severovzhodna Slovenija, Twinspan, Pohorje, Kozjak, Smrekovec, botany, phytocenology, silicicolous grasslands, Slovenia, Twinspan, Pohorje, Kozjak, Smrekovec
Objavljeno v DKUM: 10.07.2015; Ogledov: 1288; Prenosov: 48
Povezava na celotno besedilo

Opis: 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.
Ključne besede: 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
Objavljeno v DKUM: 10.07.2015; Ogledov: 1676; Prenosov: 40
Povezava na celotno besedilo

Ključne besede: botanika, redke vrste, areali, izbira habitata, Slovenija, botany, rare species, distributional ranges, habitat preferences, Slovenia, Istria
Objavljeno v DKUM: 10.07.2015; Ogledov: 1903; Prenosov: 40
Povezava na celotno besedilo

Opis: We report about successful winter survival of a tropical plant Pistia stratiotes in a natural thermal stream Topla in Slovenia in temperate climate zone in central Europe. Only 2 years after its first occurrence in 2001 P. stratiotes managed to cover most of the water body where the thermal springs cause an elevated temperature (>17 °C year round). Enhanced biomass production of this invasive species took place in spring and summer and new stolons were formed at the end of the vegetation season. Over the winter older rosettes decayed and only small rosettes survived besides new rosettes formed from stolons. Plants developed flowers in April through August. Observations in December revealed viable seed production and seed presence in the sediment.
Ključne besede: botany, water plants, tropical plant, thermal water, temperate zone, winter survival, plants trait
Objavljeno v DKUM: 07.06.2012; Ogledov: 1896; Prenosov: 135
Povezava na celotno besedilo