Josip Franjić

The salt marsh vegetation on the East Adriatic coast

Phytosociological characteristics and a rate of endangerment of the salt marsh vegetation in central and southern parts of the east Adriatic coast were studied. A total of 73 vegetation relevés were made and elaborated according to the standard procedures of the Braun-Blanquet method. Numerical analysis of the relevés and life forms was performed. Two associations of the class Arthrocnemetea-Puccinellio festuciformis-Arthrocnemetum fruticosi and Limonio-Artemisietum coerulescentis were recorded, together with the association Juncetum maritimo-acuti of the class Juncetea maritimi. These associations show no significant differentiation with regard to their floristic composition, but only in terms of particular species cover and frequency rates, as well as by life forms and microecological habitat conditions. These are specific habitats, rarely found in the studied area, and highly threatened by human activity (tourism, agriculture).

Adriatic coastal plant taxa and communities of Croatia and their threat status.

Abstract Coastal ecosystems of Croatia have recently become highly threatened because of the sudden increase in tourism, building by the shore and other anthropogenic activities. Based on the phytosociological research so far, 20 plant communities of halophilous vegetation have been established, sorted into 10 classes. Presented in this paper, for the first time, are 129 taxa of vascular flora typical of the coastal belt. To each species are assigned: conservation status, endemic status, affinity to habitat type, plant community preference and site frequency. Because of the karstic geological substrate, the coastal region of the eastern Adriatic consists predominantly of maritime rocks. Among the most endangered habitat types are sandy shores, maritime shingle and saltmarshes.