How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central Norway
The common frog (Rana temporaria) and the common toad (Bufo bufo) were introduced successfully to the coastal island of Frøya in Central Norway several times during 1960–2012. There is still a very high degree of conformity between sites where they were introduced and the present distribution of the...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Norwegian University of Science and Technology
2016-04-01
|
| Series: | Fauna Norvegica |
| Subjects: | |
| Online Access: | https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/1965 |
| _version_ | 1818199249644421120 |
|---|---|
| author | Dag Dolmen Jan Seland |
| author_facet | Dag Dolmen Jan Seland |
| author_sort | Dag Dolmen |
| collection | DOAJ |
| description | The common frog (Rana temporaria) and the common toad (Bufo bufo) were introduced successfully to the coastal island of Frøya in Central Norway several times during 1960–2012. There is still a very high degree of conformity between sites where they were introduced and the present distribution of the two species. However, in western Frøya, a release of frogs about 1996 was followed by a quick expansion of their distribution area; in 2012 and 2013, breeding was registered close to 7 km westwards and eastwards, respectively, i.e. a population dispersal speed of approximately 0.4 km/yr. On eastern Frøya and some small islands in the archipelago, area expansions at another four frog localities have been prevented by ecological barriers like unfavourable limnetic or terrestrial habitats or salty water. Two local common toad populations on eastern Frøya do not show any expansion either. However, an apparently isolated record of the species on western Frøya in 2011 can possibly be explained by the expansion westwards of a population in northern central Frøya, where toads were introduced around 1995. This stretch is about 9.9 km, i.e. an average population dispersal speed of 0.6 km/yr. |
| first_indexed | 2024-12-12T02:18:46Z |
| format | Article |
| id | doaj.art-02fc70d3bede469fb0818adad8cecdc8 |
| institution | Directory Open Access Journal |
| issn | 1502-4873 1891-5396 |
| language | English |
| last_indexed | 2024-12-12T02:18:46Z |
| publishDate | 2016-04-01 |
| publisher | Norwegian University of Science and Technology |
| record_format | Article |
| series | Fauna Norvegica |
| spelling | doaj.art-02fc70d3bede469fb0818adad8cecdc82022-12-22T00:41:44ZengNorwegian University of Science and TechnologyFauna Norvegica1502-48731891-53962016-04-013610.5324/fn.v36i0.19651743How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central NorwayDag Dolmen0Jan SelandNTNU, Norwegian University of Science and Technology, University MuseumThe common frog (Rana temporaria) and the common toad (Bufo bufo) were introduced successfully to the coastal island of Frøya in Central Norway several times during 1960–2012. There is still a very high degree of conformity between sites where they were introduced and the present distribution of the two species. However, in western Frøya, a release of frogs about 1996 was followed by a quick expansion of their distribution area; in 2012 and 2013, breeding was registered close to 7 km westwards and eastwards, respectively, i.e. a population dispersal speed of approximately 0.4 km/yr. On eastern Frøya and some small islands in the archipelago, area expansions at another four frog localities have been prevented by ecological barriers like unfavourable limnetic or terrestrial habitats or salty water. Two local common toad populations on eastern Frøya do not show any expansion either. However, an apparently isolated record of the species on western Frøya in 2011 can possibly be explained by the expansion westwards of a population in northern central Frøya, where toads were introduced around 1995. This stretch is about 9.9 km, i.e. an average population dispersal speed of 0.6 km/yr.https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/1965islandsintroductionsdispersalAmphibia |
| spellingShingle | Dag Dolmen Jan Seland How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central Norway Fauna Norvegica islands introductions dispersal Amphibia |
| title | How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central Norway |
| title_full | How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central Norway |
| title_fullStr | How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central Norway |
| title_full_unstemmed | How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central Norway |
| title_short | How fast do amphibians disperse? Introductions, distribution and dispersal of the common frog Rana temporaria and the common toad Bufo bufo on a coastal island in Central Norway |
| title_sort | how fast do amphibians disperse introductions distribution and dispersal of the common frog rana temporaria and the common toad bufo bufo on a coastal island in central norway |
| topic | islands introductions dispersal Amphibia |
| url | https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/1965 |
| work_keys_str_mv | AT dagdolmen howfastdoamphibiansdisperseintroductionsdistributionanddispersalofthecommonfrogranatemporariaandthecommontoadbufobufoonacoastalislandincentralnorway AT janseland howfastdoamphibiansdisperseintroductionsdistributionanddispersalofthecommonfrogranatemporariaandthecommontoadbufobufoonacoastalislandincentralnorway |