The Isles of Scilly Biodiversity Audit 2008 - Cornwall Wildlife Trust

4.1 SpeciesThis Biodiversity Audit identifies species in need ofsome level of conservation action. Where possibleconservation of these species will be achievedthrough habitat level action, though a few specieswill require special action to ensure their protectionand conservation. For some species it will not bepossible to improve or maintain their status in Scillythrough local biodiversity action. For those speciesit is expected that action such as political lobbyingand international agreements will occur at regional,national and international level.Species on the Isles of Scilly priority list have beenselected because they are nationally important orimportant to Scilly.Within the table information is provided, whereknown, on local decline, local rarity and local threatsto help assess priority. Details of the species’ habitatis included as well as whether they occur in BAPhabitats. For each species there are recommendedactions which are described in more detail in Section 5.There are 293 species on the Isles of Scilly priority list.Key to species priority tableUK PriorityIncreasingRapidly increasingLocal rarityCommonUncommonRareLocal ThreatHighly threatenedThreatenedNone6-49% increase in numbers/range50-100% increase innumbers/rangeSpecies which are locallywidespreadSpecies which are scarce oroccasional in ScillySpecies which have very fewknown sites or are very littlerecorded in Scilly.Species which aresignificantly andimmediately under threatlocally.Species which are locallythreatened to some levelSpecies which are notthreatened locally (althoughthey may be threatenedelsewhere in their range)BAPRDBNRNSNational Biodiversity ActionPlan speciesRed Data Book speciesNationally rareNationally scarceLocal decline (within the last 25 years)Rapidly declining 50-100% decline innumbers/rangeDecliningStatic6-49% decline in numbers/range5% increase – 5% decline innumbers/rangeBAP habitatIndicates whether this species normally occurs withina national Biodiversity Action Plan habitat in Scilly.RecommendationsRecommendation numbers 1-6 are therecommendations found in Section 5.The following species list is not intended to becomprehensive and will reflect the level of knowledgeand expertise. It must be considered a “live” documentsubject to change and amendment. Gaps in the tablereflect gaps in current knowledge and data on thestatus and threats for these species.Isles of Scilly biodiversity audit Page 94