Borovničev mnogook (Plebejus optilete) je v Sloveniji razširjen le na ovršnem delu zahodnega Pohorja, kjer živi na šestih ločenih območjih. Vrsta je vezana na vrstno bogata gorska travišča na ...silikatni podlagi tipa volkovje (Homogyno-alpine-Nardetum) z visokim deležem borovnic in jesenske vrese. Za ugodno stanje habitata sta pomembni še navadna zlata rozga in arnika, ki sta poleg jesenske vrese glavni vir nektarja odraslih osebkov. V šestih letih monitoringa s transektno metodo smo ugotovili izrazita medsezonska nihanja, vendar skoraj na vseh ploskvah tudi trend upadanja številčnosti odraslih osebkov. Največja pestrost dnevnih metuljev je bila zabeležena na transektu na Kopah, kjer je habitat borovničevega mnogooka najbolj ohranjen. Vrsto ogrožata zmanjševanje in slabšanje življenjskega okolja zaradi zaraščanja travišč, neustrezne kmetijske rabe in neprilagojenega razvoja turizma. Dolgoročno so potencialna grožnja vrste tudi klimatske spremembe. Podane so upravljavske smernice za zagotavljanje trajnega ohranjanja življenjskega prostora in populacije borovničevega mnogooka na pohorskih planjah.
Peat bogs are listed among the most threatened habitats in central Europe, a situation that is reflected by, for example, the conservational status of stenotopic butterflies. Even so, this group ...remains relatively little studied and most of the available data are limited to qualitative records. The present study enabled us to gain insight into the butterfly fauna of the two largest peat bogs in the Knyszyn Forest (NE Poland), i.e. Bagno Moskal and the one in the Jesionowe Góry nature reserve. The sites, only ca 10 km apart, are characterized by similar vegetation (mainly the Ledo-Sphagnetum association). The study was carried out in 2013-2015 using the transect method, i.e. regular counts along fixed routes. A total of 37 species, including three tyrphobionts (Colias palaeno, Plebejus optilete and Boloria eunomia) and two tyrphophiles (Callophrys rubi and Boloria euphrosyne), were recorded. The greatest and unexpected differences between the sites were related to the complete absence of P. optilete at Bagno Moskal, the significantly higher abundance of B. eunomia at Jesionowe Góry and the greater abundance of B. euphrosyne at Bagno Moskal. In addition, C. palaeno was observed sporadically and only at Bagno Moskal. There was some heterogeneity in the distribution and density of particular species, however. Ledum palustre was found to be the most important nectar plant, its flowers also being frequently visited by tyrphoneutrals. The present study shows that isolated island-like habitats (e.g. peat bogs) may possess specific features and be subject to specific independent changes. The results provide a good basis for further research into the habitat preferences of tyrphophilous and tyrphobiontic butterflies, which is important in the context of their conservation.
Eleven species of butterflies were recorded on Flattop Mountain, Anchorage, Alaska, during a four-day period in July 2006: Colias philodice vitabunda (Clouded Sulphur), Pieris angelika angelika ...(Arctic White), Lycaena dorcas arcticus (Dorcas Copper), Plebejus glandon bryanti (Arctic Blue), Plebejus idas alaskensis (Northern Blue), Plebejus optilete yukona (Cranberry Blue), Boloria charliclea butleri (Purplish Fritillary), Boloria alaskensis alaskensis (Mountain Fritillary), Speyeria mormonia bischoffii (Mormon Fritillary), Oeneis bore mckinleyensis (White-veined Arctic), and Carterocephalus palaemon skada (Arctic Skipperling). Based on previously published distribution maps, the records for Plebejus idas and P. optilete represent range extensions; P. optilete was relatively common in sheltered valleys on the mountain.
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