Floristic diversity of the Divljača forest (eastern Medvednica)

Abstract

Šuma Divljača nalazi se u Sesvetama, sa zapadne strane naslanja se na zagrebačku četvrt Dubrava, a sa njene sjeverozapadne strane prostire se Medvednica. U istraživanom području pojavljuju se različita mikrostaništa: bjelogorica, crnogorica, krčevine, obale potoka i sastojine malog zimzelena. Vaskularna flora ovog područja istraživana je od veljače do studenog 2022. godine. Zabilježeno je 114 vrsta raspoređenih u 54 biljne porodice. Najbrojnije biljne porodice su Rosaceae (10%), Compositae (8%), Ranunculaceae (5%), Fabaceae (4%), Scrophulariaceae (4%), Apiaceae (3%), Caryophyllaceae (3%), Juncaceae (3%) i Lamiaceae (3%). Najveći broj vrsta i raznolikost je na krčevinama. Najdominantniji životni oblici su dugoživući hemikriptofiti (41,23%), geofiti (25,44%) i fanerofiti (19,3%). Na svim mikrostaništima dominiraju listopadne biljke. Dominantni oblici rasprostranjivanja su endohorija, disohorija i mirmekohorija. Fitogeografska analiza pokazuje da u istraživanom području dominiraju biljke euroazijskog flornog elementa (40,9%). Na svim mikrostaništima prevladavaju biljke kojima odgovaraju temperature brežuljkastog pojasa te biljke suboceanske do subkontinentalne rasprostranjenosti. Zabilježeno je osam alohtonih i četiri invazivne vrste. Prema Crvenoj knjizi vaskularne flore Hrvatske 6 svojti svrstano je u neko od kategorija ugroženosti.The Divljača Forest is located in Sesvete, on the west side it abuts the Zagreb district of Dubrava, and on its northwest side lies Medvednica. Different microhabitats appear in the researched area: spruce, coniferous, scrub, stream banks and stands of Vinca minor. The vascular flora of this area was investigated from February to November 2022. 114 taxa distributed in 54 plant families were recorded. The most represented plant families are Rosaceae (10%), Compositae (8%), Ranunculaceae (5%), Fabaceae (4%), Scrophulariaceae (4%), Apiaceae (3%), Caryophyllaceae (3%), Juncaceae (3%) and Lamiaceae (3%). The greatest number of species and diversity is in scrubland. The most dominant life forms are long-lived hemicryptophytes (41.23%), geophytes (25.44%) and phanerophytes (19.3%). All microhabitats are dominated by deciduous plants. The dominant forms of propagation are endochory, disochory and myrmecochory. Phytogeographical analysis shows that plants of the Eurasian floral element dominate in the researched area (40.9%). All microhabitats are dominated by plants that correspond to the temperatures of the hilly belt and plants of suboceanic to subcontinental distribution. Eight allochthonous and four invasive species were recorded. According to the Red Book of the Vascular Flora of Croatia, 6 taxa are classified in one of the endangered categories