North and south of the Fehmarnbelt, biologists are systematically studying an extensive series of localities encompassing such natural settings as lakes, watercourses, forest, grassland, bogs and marshes, salt meadow, and fallow field. At each individual locality, plant species are surveyed and reports describing and assessing the quality of these localities are prepared. Fern-leaf dropwort is quite a rare species, but it grows in a few places on Fehmarn and Lolland. (photo: Manfred Haacks)
Species lists reveal the flora Different plant species have different requirements of their habitat. Plant growth can therefore provide much information about the condition of a given locality. As a step in the surveys we are drawing up a species list, which provides an overview of all the plant species encountered during field work.
Overabundance of highly resource-intensive, high-growth plant species such as stinging nettle and great willow herb indicate poorer natural conditions than the occurrence of more demanding species such as white sticky catchfly and meadow saxifrage, which are dependent on light and nutrient-poor soil. |
Similarly, the presence of species that spread slowly may indicate that a site is old and therefore a probable habitat for particular insects and fungi. Examples of such species include forest plants such as hollow-root and enchanter’s nightshade. Hunting for rare species Besides the general mapping of plant species within these sites, we are conducting independent studies of mosses and red-listed, i.e. rare and threatened plants. The field cow-wheat is extinct on Fehmarn. But the situation is different on Lolland where the dykes are home to Denmark's biggest population of the species. (photo: Jan Fischer Rasmussen)
For these studies, a number of areas have been selected that are considered potential habitats for rare species. These sites are reviewed by specialists, often with specific local knowledge, and findings of interest are then tagged using GPS in order for the precise habitat to be identifiable. This will give a good indication of where rare species flourish.
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