engleski

Discontinuity in research of macroalgae in Croatian freshwaters - the implications of the gap between historical and recent knowledge

First “tips” about the macroalgal flora in Croatian freshwaters were provided during mid- and late-19th century, in the form of the observations of certain species of Chlorophyta, Rhodophyta and Chrysophyta in karst watercourses. During the mid-20th century, there was a major breakthrough in this topic when a large number of papers dealing with the occurrence and abundance of algal flora in the watercourses of Dinaric ecoregion was published. Great deal of these papers was published as offprints, on local language in local journals, only available in printed forms ; while only a small number is scanned and available online. In addition, online scans often do not appear in traditional internet search engines, because they do not contain digital keywords recordings but are saved as textual photographs. Between these historical records and recent studies of freshwater algae, there was a large gap of surveys and publishing covering this topic in Croatia. Recent research dating from the begging of 21st century is mostly related to Characeae, as a part of national biomonitoring scheme and specific freshwater macroalgal Chrysophyta, Phaeophyta and Rhodophyta species. The latest papers were the ones published online in digital forms, and therefore much easier to access. Preliminary observation shows the tendency of recent papers to overlook some of the old information ; not only by the authors but also by the paper reviewers. We conclude that the historical information was “lost” through time due to the hardly accessible literature (local papers printed in local language) followed by a discontinuity in research. This overview provides a survey of macroalgal research through historical, hardly accessible literature, and links the results with the recent macroalgal research, therefore, we bring some recent information about occurrence of Hydrurus foetidus (Chrysophyta) ; Heribaudiela fluivatilis (Phaeophyta) ; Bangia artopurpurea, Hildenbrandia rivularis, Lemanea spp., and Thorea hispida (Rhodophyta) in Croatian freshwaters.

offprint, digital record, Rhodophyta, Phaeophyta, Chrysophyta, review

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