| 1. |
- Enckell, P H, et al.
(författare)
-
Serf and waif colonization: different patterns in distribution and dispersal of invertebrate species in settlements in the Faroe Islands
- 1987
-
Ingår i: Journal of Biogeography. - 0305-0270 .- 1365-2699. ; 14, s. 89-104
-
Tidskriftsartikel (refereegranskat)abstract
- We measured the faunal similarityb etween samples of Coleoptera, Araneae and Gastropoda + Lumbricidae + Opiliones from infields ites in the Faroes by ordination,a nd compared the sites on a between-islandb asis. The aeriallyd ispersingA raneae did not show any island-specific pat-tern; the faunal similarityw as high between the islands. Coleoptera showed a patternw heres imilarityw ithini slandsw as highert hanb etween them.T he anthropochorous parto ft he Coleopteraf ormeda clear pattern reminiscentof t heg eographicala ppearanceo ft heF aroes; similarity within large islandsw as clearlyh ighert han betweeni slands. This indicatest hat one of the axes in thep rincipalc omponenta nalysisi s an approximationo f some measure of geographical distance. The small islands, however, showed the randomp atterno f a waifc olonizationa nd occurreds cattered in the factors pace. The anthropochorous groupsG astropoda + Lumbricidae+ Opiliones differedm arkedlyf roms uch a pattern,a nd were more similart o the aerially dispersingA raneae. We interprett his as being the result of a dispersalb etweena nd withinis landsd ependento n Man, and a persistence (of manys pecies) in man-madeh abitatso nly. We termt hiss erfc oloniza-tion to indicate those species' total dependence upon Man.
|
|
