Biologisk Mangfald I Stranda Kommune

Biologisk Mangfald I Stranda Kommune

Biologisk mangfald i Stranda kommune Mnemosynesommerfugl Foto: Datg Holtan Kartleggingsrapport 2000 Dag Holtan Karl Johan Grimstad Innhald Innhald............................................................................................................................ 1 Ordliste........................................................................................................................... 5 Føreord frå kommunen ................................................................................................. 6 Forfattarane sitt føreord................................................................................................ 7 1 Samandrag.................................................................................................................. 8 1.1 Bakgrunn og føremål .............................................................................................. 8 1.2 Metodar .................................................................................................................. 8 1.2.1 Verdsetting ............................................................................................................................ 9 1.2.2 Skjøtsel, forvalting og tilrådingar........................................................................................... 9 1.2.3 Raudlisteartar, signalartar og norske ansvarsartar............................................................. 10 1.2.4 Resultat ............................................................................................................................... 10 Tabell 01: Naturtypar som vart kartlagt i Stranda i 2000 .............................................................. 11 Tabell 02: Alfabetisk oversyn over kartlagde område................................................................... 11 2 Innleiing.....................................................................................................................14 2.1 Naturgrunnlaget i Stranda..................................................................................... 14 2.2 Tidlegare kartlegging i Stranda, litteraturtilfang .................................................... 15 2.3 Omfanget av kartlegginga..................................................................................... 16 3 Resultat ..................................................................................................................... 17 3.1 Generelt om dei kartlagde naturtypane................................................................. 17 3.1.1 Intakt låglandsmyr og rikmyr ............................................................................................. 17 3.1.2 Rasmark, berg og kantkratt............................................................................................... 17 3.1.3 Kalkrike fjellområde ........................................................................................................... 17 3.1.4 Kulturlandskap................................................................................................................... 17 3.1.5 Ferskvatn/våtmark............................................................................................................. 18 3.1.6 Lauvskog ........................................................................................................................... 18 3.1.7 Rik edellauvskog ............................................................................................................... 19 3.1.8 Bjørkeskog med høgstaudar ............................................................................................. 19 3.1.9 Gråor-heggeskog .............................................................................................................. 19 3.1.10 Gammal lauvskog.............................................................................................................. 20 3.1.11 Gammal (fure)skog og (kyst)fureskog............................................................................... 20 3.1.12 Øydinga av skogen............................................................................................................ 21 3.1.13 Tillegg: Olivin- og serpentinberg .......................................................................................21 4 Signalartar, ansvarsartar og raudlisteartar i Stranda............................................ 22 4.1 Signalartar ............................................................................................................ 22 Tabell 03: Framlegg til signalartar i ulike naturtypar i Stranda ..................................................... 23 4.2 Kommentarar til nokre av signalartane ................................................................. 25 4.2.1 Vedbuande sopp .................................................................................................................. 25 4.2.2 Lav........................................................................................................................................ 26 4.2.3 Karplantar............................................................................................................................. 26 4.2.4 Fugl....................................................................................................................................... 26 4.3 Raudlisteartar og norske ansvarsartar i Stranda .................................................. 27 Tabell 04: Kjende funn av raudlisteartar i Stranda........................................................................ 27 Tabell 05: Nokre av raudlisteartane i ein internasjonal samanheng............................................. 31 4.4 Kommentarar til nokre av artane .......................................................................... 33 4.4.1 Sopp ..................................................................................................................................... 33 4.4.2 Lav........................................................................................................................................ 34 4.4.3 Mosar.................................................................................................................................... 34 4.4.4 Karplantar............................................................................................................................. 34 4.4.5 Insekt .................................................................................................................................... 35 4.4.6 Hekkefuglar .......................................................................................................................... 35 2 5 Skildring av avgrensa område................................................................................. 37 5.1 Skog ..................................................................................................................... 37 Tabell 06: Oversyn over kartlagde skogsområde ......................................................................... 37 01 Ansok........................................................................................................................................ 38 02 Bringa (aust for elva) ................................................................................................................ 39 03 Bringa (vest for elva) ................................................................................................................ 40 04 Frøysa....................................................................................................................................... 41 05 Grande...................................................................................................................................... 41 06 Gravavika-Urdaneset ............................................................................................................... 42 07 Hellesylt-Karbøen..................................................................................................................... 43 08 Horvadraget-Knivsflåelvane (Dei sju systrene)........................................................................ 44 09 Hysket....................................................................................................................................... 45 10 Langflåa.................................................................................................................................... 46 11 Lauvvikane-Ovrå ...................................................................................................................... 46 12 Liene (Uksagliene) ................................................................................................................... 48 13 Ljøvika-Hammaren ................................................................................................................... 49 14 Nakkane-Øygardsnakken......................................................................................................... 50 15 Nedre Ljøen.............................................................................................................................. 51 16 Stavseng (aust) ........................................................................................................................ 52 17 Stavseng (vest)......................................................................................................................... 53 18 Tindbjørgane-Åkerneset........................................................................................................... 54 5.2 Sørberg,

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