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since then, improved water management and decreasing eutrophication have had a positive impact on dragonfly populations.
vėliau, tobulinant vandentvarką ir mažinant eutrofizaciją, laumžirgių populiacijai padarytas teigiamas poveikis.
one german project has introduced a programme to protect the endangered southern damselfly (coenagrion mercuriale) and a species of whiteface dragonfly (leucorrhinia pectoralis).
leucorrhinia pectoralis) rūšių laumžirgiams apsaugoti.
data on saproxylic beetles are less developed than for butterflies and dragonflies, but the red list suggests that some 14 % of the species have declining populations, around 27% are stable and only 2 % are increasing.
medienoje besiveisiantys vabalai (angl. saproxylic beetles)