Common and rare Swedish vertebrates - distribution and habitat preferences

摘要: Data have been compiled on the distribution, habitat preferences and population sizes of 348 vertebrates reproducing in Sweden (excluding fish) their species richness different habitats regions was investigated. Furthermore, we compared distribution rare common vertebrates. The relative number (corrected for area) increases from north (the hemiarctic/boreal zone) to south temperate/hemiboreal zone). major is highest farmland, lakes running waters, possibly also sea. However, absolute woodland, dominant (56% land area excluding sea). Within woodlands, a large proportion occur southern deciduous forests, other forests mixed while coniferous are less species-rich when taken into account. In most meadows forest edges, marshes amongst waters. Nationally (<1000 individuals) smaller European range than species, they centres further species. Of occurring parts (that is, both south) low (4.7%) classified as with mainly (20.6% rare) or (31.6% Sweden. There positive correlation between total 41 subcategory habitats, similar habitats. A more detailed analysis (including effects habitats) suggests that region result differences latitudes, but (when corrected latitude effects). nine orders (for example, there high order Carnivora Rodentia), these not independent which occur, making it difficult separate taxonomy rarity. focusing conservation work relatively middle — such some farmland edges), (in connection waters) trees priority if biodiversity main goal. These red-listed