Realm: Terrestrial
Climate: Polar/Temperate
Biome: Multiple
Central latitude: 62.316845
Central longitude: 17.211944
Duration: 9 years, from 2011 to 2019

4495 records

20 distinct species

Across the time series Capreolus capreolus is the most frequently occurring species

Methods

Geography and habitat: In total there are 716 Fixed routes systematically distributed across Sweden in a 25 by 25 km grid. This means that all main habitats are surveyed in a representative manner. Timing and frequency: The survey should be carried out in the main breeding season for the majority of species. Hence the date for the survey will vary across the country (approximately 20 May-5 July). Start time should be 04:00 (+/-30 min), but no earlier than 30 minutes before sunrise. Each route should ideally be surveyed once per year, but each year there are routes that were not surveyed. These are prioritised the following year. General layout: A fixed route consists of eight 1km-line transects and eight 5minute-points, along a 2 by 2 km square. Line transects and points should be considered as two separate surveys. (NOTE: some routes consist of less than eight lines and/or points. This is the case when lines/points end up e.g. in a lake or the sea due routes being distributed in a standardised grid. However, a particular route has the same number of lines and points each year it is surveyed.) A given animal can occur on one point and one line, but double-counting the same animal on two points or two lines should be avoided. All birds (excluding young of the year) and mammals (including young of the year, but see the species list) seen or heard are registered no matter how near or far from the line or point they are. Line transects: Counting is carried out while slowly walking, stopping to listen and watch as necessary, during approximately 30-40 minutes per km depending on the terrain. Point counts: Birds are counted while standing still for 5 minutes at each point. The data shown in this Darwin core archive are, for each bird or mammal species, the sum of all individuals on all the line transects during this visit. The coordinates supplied are for the central point of each 25 x 25 km square of the survey grid, within which the route is situated. Since 2011, also the following mammals (approximately, all larger than rodents) are included in the survey: Western European hedgehog, Eurasian red squirrel, Eurasian beaver, European hare, mountain hare, European rabbit, Eurasian lynx, grey wolf, arctic fox, red fox, brown bear, stoat, least weasel, American mink, western polecat, pine marten, wolverine, Eurasian otter, Eurasian badger, wild boar, moose, European roe deer, red deer, fallow deer, harbor seal, grey seal and ringed seal.

Citation(s)

@Dataset{BioTIME_cit384, Study_id = {635}, Citation_id = {384}, Author = {Lindstr{\"o}m, {\r A}ke and Green, Martin}, Publisher = {Department of Biology, Lund University}, Title = {Swedish Bird Survey: Fixed routes (Standardrutterna)}, Year = {2020}, Doi = {10.15468/hd6w0r}, Url = {https://doi.org/10.15468/hd6w0r}, Language = {English} }