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Einige Flechten sind im Verlauf der letzten Jahre deutlich häufiger geworden oder haben sogar ihr Areal ausgedehnt. Die Ausbreitung einiger hemerophiler Flechten in Mecklenburg-Vorpommern wird nachfolgend diskutiert. Anisomeridium nyssaegenum, Strangospora moriformis und Thellomma ocellatum sind neu für Mecklenburg-Vorpommern.
Die Boddenküste, ein vielgestaltiger, besonderer Abschnitt der südlichen Ostseeküste, bietet für Tangwall-(Atriplicion littoralis) und Spülsaumvegetation (Salsolo-Honckenyion) günstige Bedingungen. Drei Assoziationen des Atriplicion wurzeln ausschließlich in "Tang"-Wällen (hauptsächlich bestehend aus Zostera marina und Potamogeton pectinatus). Auf übersandeten Spülsäumen wächst das Cakiletum maritimae. Von Standorten, an denen auf Geschiebemergel frisches organisches Material, altes organisches Material und Kies, Geröll oder Sand liegen, werden Überlagerungsgesellschaften beschrieben.
In May 2018, 34 dragonfly species were recorded on Wolin (21), Usedom (30) and the adjacent mainland (21). The most frequent spring species in the area were Coenagrion puella, Libellula quadrimaculata, C. pulchellum, Ischnura elegans, Erythromma najas, Brachytron pratense and Cordulia aenea. C. lunulatum and Calopteryx virgo were recorded for the first time on Usedom, while Anax parthenope, Libellula fulva and Leucorrhinia caudalis were recorded for the first time on Wolin. The occurrence of Coenagrion armatum, which had been recorded in 2016 on Usedom, could not be confirmed.
The quantitative results of the survey are given for different types of water bodies (ditches, pools, ponds, lakes, bog lakes). The average number of species per water body was highest in bog lakes (7.5) and lowest (3.4) in temporary pools. In comparison to older studies from the area, the flight season started 13.7 days earlier in 2018 than in years documented prior to 1989. This might be explained by climatic changes. The species composition, however, has remained rather stable – at least on Usedom and the mainland. On Wolin, climatic factors as well as habitat loss and transformation have led to a species composition that is different from the one recorded in the first half of the 1970s.
The first record of the very rare linyphiid spider Ceraticelus bulbosus (Emerton, 1882) from Germany is presented. Furthermore records of Agroeca dentigera, Agyneta arietans, Bathyphantes setiger, Brommella falcigera, Crustulina sticta, Erigone dentigera, Meioneta mossica, and Pardosa morosa and other rare spiders are reported.