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42 The ecology and conservation of the Bog Hawker Aeshna subarctica ...the most typical habitats, but transectswere chosen by ten categories ofvegetation developed by the author’sand as well as by accident. Eachtransect was run through two times,i.e. back and forth and all exuviaewere collected.The quantitative field data ondragonflies imago were collected inGrabatiņš Lake and Meistars Lake.The survey of dragonflies werecarried out within a transect alonglake bank. All observed specimenswere counted. The length of bank ofGrabatiņš Lake is 300 m, of MeistarsLake is 550 m.The areas measured onorthophoto maps, scale 1:10 000 fromthe third cycle (2007-2008) of aerialphotography (Latvian GeospatialInformation agency) using Arc GIS9 software. Geographical coordinatesare only given for several localities,localisation of which could bedifficult. Vegetation descriptionsconcern a zone inhabited byA. subarctica.Explanations of abbreviations: Aessub– Aeshna subarctica, PPNT – particularlyprotected nature territory, d. – district, vill. –village. The number of observed imagines orcollected exuviae of A. subarctica (Aessub)is given after the date of observation andfollowed by references or the author ofunpublished data, as e.g. (M. Kalniņš). Theregions are named according to the Lawon administrative territories and populatedareas (2008). Some of the regional namesare concurrent with district names, used bythe author in previous papers (Kalniņš 2007,2008).ResultsTwenty one locality ofA. subarctica has been recordedin Latvia so far. Geographicalcoordinates are only given forseveral localities, localisation ofwhich could be difficult. Vegetationdescriptions concern a zone inhabitedby A. subarctica.1. Lielauce Lake (Auced.). August of 1949, Aessub: 1female was caught (Spuris 1952;1956). Information about locality(vegetation) was not described indetail in the original publication, thedata on vegetation concern its currentcomposition. The lake is large andrich in diverse habitats and one partof lake are fen (~200 ha). The localityhas had PPNT status since 1999. It issituated in the nature reserve “Vīķupurvs” and in the NATURA 2000 area(site code: LV0504700).2. Complex of bog pools S ofGārgaļu Lake and at the NE part oflarge Lielais Ķemeru tīrelis Bog(Tukums d.). Large (~5000 ha)active raised bog with largecomplexes of bog pools. Vegetationwith Sphagnum cuspidatum andSphagnum sp., Eriophorum sp.,