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298 results for “abundance distribution”
FIGURE 19 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 19. Clear-cuts offer summer habitat for Zootoca vivipara, Anguis fragilis, and Vipera berus for a decade or so until planted conifers grow tall enough to shade the ground. Robertsfors, Västerbotten, Middle Boreal region. Photo: Johan Elmberg.
FIGURE 18 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 18. Summer habitat for Rana temporaria and Rana arvalis in boreal riparian deciduous woodland. The canopy is dominated by Alnus incana, Prunus padus, and Sorbus aucuparia, with scattered Salix caprea and Betula pubescens. The lush herbaceous field layer provides shelter and abundant invertebrate food in summer. Population density at this site has been estimated at up to 7500 and 6000 adults/km2 of Rana temporaria and R. arvalis, respectively. Bölesholmarna, Umeå, Västerbotten, Middle Boreal region. Photo: Johan Elmberg.
FIGURE 16 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 16. Rana temporaria is the hardiest amphibian in North Sweden, ranging up to the transition between the Mid- and High-Alpine life zones. Individuals in these uppermost populations often give a toad-like impression due to their dark color and short hindlimbs. Stekenjokk, Jämtland, 1070 m altitude. Photo: Johan Elmberg.
FIGURE 13. Recently abandoned hayfields are prime summer habitat for Rana temporaria, R in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 13. Recently abandoned hayfields are prime summer habitat for Rana temporaria, R. arvalis, Bufo bufo, Anguis fragilis, and Vipera berus. The forest edge in the background is typical habitat also for Zootoca vivipara. Baggböle, Västerbotten, Middle Boreal region. Photo: Johan Elmberg.
FIGURE 12 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 12. Ongoing post-glacial land uplift creates open habitats along the Baltic coast of North Sweden. Rock pools (foreground) serve as breeding sites for Rana temporaria and Bufo bufo, occasionally also for Lissotriton vulgaris. Brushy areas along the forest edge (background) are typical summer habitat for Zootoca vivipara and Vipera berus. Tjäruskär, Ångermanland, Middle Boreal region. Photo: Johan Elmberg.
FIGURE 17 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 17. Rana temporaria is the only amphibian breeding in alpine heath habitats well above tree line in the Scandic Mountains of North Sweden. Among the variety of wetland types available, chorusing and spawning invariably take place in shallow ponds with moderate to sparse vegetation. Despite high altitude and latitude, a short annual activity period, and a cool overall climate, breeding ponds enjoy constant daylight, high insolation and thus warm up rapidly. Kraipe, Lycksele lappmark, 820 m altitude, Low-Alpine zone. Photo: Johan Elmberg.
FIGURE 14 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 14. Vast areas of North Sweden's interior are covered by level open bogs with permanent water. Rana temporaria, R. arvalis, and Bufo bufo breed in the pool depressions (foreground) and come ashore to forage in grassy areas in summer. More elevated and drier string parts of the bogs offer protective vegetation and summer habitat för Zootoca vivipara and Vipera berus. Photo: Jonas Grahn.
FIGURE 15 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 15. Summer habitat for Rana temporaria in the transition between the Mid- and High-Alpine life zones. Here the annual activity period lasts three months or less, during which adults adopt a semi-aquatic lifestyle, spending much time in small creeks and seepage areas. Stekenjokk, Jämtland, 1070 m altitude. Photo: Johan Elmberg.
FIGURE 11 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 11. Mesotrophic lakes with extensive beds of grasses and sedges provide breeding habitat for Rana temporaria, R. arvalis, and Bufo bufo. If fishless, also Lissotriton vulgaris is likely to occur in lakes of this type. Spring aspect from Öster- Skivsjön, Västerbotten, Middle Boreal region. Photo: Johan Elmberg.
FIGURE 10 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 10. Distribution of Vipera berus in North Sweden. Colored parts of the Baltic in Ångermanland, Västerbotten, and Norrbotten represent areas with widespread occurrence on offshore islands. Triangles at sea in Medelpad and Hälsingland represent more singular offshore occurrences. Question marks denote areas where the western range limit is poorly known.
FIGURE 8 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 8. Distribution of Anguis fragilis in North Sweden. The oval in northernmost Västerbotten represents many records over a long time period, a population that is possibly disjunct. Note the total lack of records from offshore islands in the Baltic.
FIGURE 9 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 9. Distribution of Natrix natrix in North Sweden. The green circle denotes a disjunct record in Härjedalen, for which there is no suspicion of anthropogenic origin. Triangles show occurrence on far offshore islands in the Baltic. Filled black circles denote well-documented records where anthropogenic origin can be suspected (cf. Elmberg 1995). None of the latter represent permanent reproducing populations. A question mark shows area where presence is likely but has not been documented.
FIGURE 4 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 4. Distribution of Bufo bufo in North Sweden. Colored areas of the Baltic are those with widespread occurrence on offshore islands. The extremely isolated offshore occurrence on the islet Bonden is shown by a triangle. Possibly disjunct occurrences in northern Norrbotten and close to the Alpine region in Jämtland are shown by a filled circle. Question marks show areas where presence is possible but has not been documented.
FIGURE 7 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 7. Distribution of Zootoca vivipara in North Sweden. Although most of the Scandic Mountain range is colored, the species is absent from high-altitude areas in the Alpine region (see Figure 1 for outline of the latter). The upper limit of occurrence runs from 1100 m in Härjedalen, decreasing towards the north to 700–800 m in Lule lappmark. The only truly far offshore occurrence in the Baltic is shown by a triangle. A question mark denotes unknown status in parts of the vast Baltic archipelago in Norrbotten.
FIGURE 3 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 3. Distribution of Triturus cristatus in North Sweden. Areas colored darker denote more continuous range, and lighter color areas where records are more scattered. Likely disjunct occurrences are shown by filled circles and an offshore record by a triangle. A question mark shows area where presence is likely but has not been documented.
FIGURE 2 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 2. Distribution of Lissotriton vulgaris in North Sweden. Known continuous range is colored. Possibly disjunct occurrences are denoted by filled circles and offshore records by triangles.
FIGURE 6 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 6. Distribution of Rana arvalis in North Sweden. Possibly disjunct records in Härjedalen and Lule lappmark are denoted by a filled circle. Question marks indicate areas where the shown range limit to the west and the north may be too conservative. There is not any documented recent occurrence on offshore islands in the Baltic.
FIGURE 1 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 1. Faunistic provinces in North Sweden and their names. Dashed lines are borders between provinces and solid lines inland show the national borders with Norway (west) and Finland (east). Areas southeast of the dark green line are in the Southern Boreal biotic region. Areas between the dark green and light green lines are in the Middle Boreal biotic region. Areas between the light green and blue lines are in the Northern Boreal biotic region. Areas west and northwest of the blue line are in the Alpine biotic region, which is further subdivided into life zones based on altitude (see Methods). Map template by Nils Wallin, Kristianstad University. Inset map shows location and extent of North Sweden in Europe.
FIGURE 5 in Amphibians and reptiles in North Sweden: distribution, habitat affinities, and abundance (Classes: Amphibia and Reptilia)
FIGURE 5. Distribution of Rana temporaria in North Sweden. Although the entire Scandic Mountain range is colored, the species is absent from the High-Alpine zone in the Alpine region (see Figure 1 for outline of the latter). In other words, the species is missing from areas higher than 1400 m in Jämtland, decreasing to 1000 m in Torne lappmark. Colored parts of the Baltic are areas with widespread occurrence on offshore islands.
Abundance and Distribution of Lipids and Proteins in Nonalcoholic Fatty Liver Disease (NAFLD)
ClinicalTrials.gov study NCT00983463. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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