Integrated Monitoring Sites in Sweden

During the 80´s about twenty sites were selected representing various biotopes all over the country, from southern deciduous woodland via coniferous forest to open mire, lake and alpine heath (Table). Their sizes ranged from a few to well over one thousand hectares. The deposition of air pollutants, mainly sulphur and nitrogen, is greatest in the southwest. Therefore most of the sites were situated there. During the period 1982 till about 1994 these sites were monitored. They were all excluded from active land-use except reindeer grazing. Thereby it would be easier to separate the effects of air pollution from natural variation. It was gradually clear that, in order to make e.g. element budgets, large and complex sites are not very well suited. Therefore, beginning in the mid 90´s, new sites were established characterized by clear hydrological delimitation, small size, homogeneous coniferous forest, no lakes and with as little mire area as possible. For economic reasons only four such sites were accepted, situated in different zones of the air pollution gradient. The former twenty sites were abandoned from most monitoring, but markings of sample plots etc. were left, so that it would be possible to resume observations if suitable.     IM sites: Gammtratten Kindla(höjden) Gårdsjön Aneboda

Sites where integrated monitoring of any form has been conducted since 1981. At four sites with bold-text names IM is presently running, at the others it has been finished or postponed for indefinite time.

In the table both the old and the current (bold text) PMK/IM sites are listed in order from north to south.

site	ICP-IM code	latitude	longitude	alt. (m) max/min	start year	area ha	biome	dominant vegetation
Abisko Slått.		68°22´	18°40´	915	89	-	alpine	alpine heath
Abisko Ridonj.		68°21´	18°45´	440/380	81	-	subalpine	subalp. birch forest
Ammarnäs fjäll	SE05	65°58´	15°58´	1034/810	83	1052	alpine	alpine heath
Ammarnäs skog	SE05	65°57´	15°58´	860/550	83	-	subalpine	subalp. birch forest, mire
Reivo	SE03	65°47´	19°08´	535/495	84	1090	mid boreal	mixed conif. forest, mire
Vindeln Svartb.	SE06	64°15´	19°47´	335/220	81	215	mid boreal	mixed conif. forest
Vindeln Kulb.	SE07	64°10´	19°34´	275/230	81	-	mid boreal	mixed conif. forest
Gammtratten	SE16	63°51´	18°07´	545/420	97	45	mid boreal	mixed conif. forest, mire
Sandnäset	SE08	63°45´	12°26´	540/430	83	52	N-S-boreal	conif.-decid. forest, mire
Stormyran	SE09	62°15´	16°14´	500/415	86	321	mid boreal	mixed conif. forest, mire
Tandövala	SE10	60°57´	13°08´	725/650	82	583/140	mid boreal	mixed conif. forest, mire
Kindla	SE15	59°45´	14°54´	415/337	96	20,4	S boreal	mixed conif. forest, mire
Grimsö		59°38´	15°27´	95/80	81	-	S boreal	mixed conif. forest, mire
Tyresta		59°10´	18°15´	75/42	82	340	boreonem.	mixed conif. forest, mire
Tresticklan	SE11	59°00´	11°45´	235/200	81	140	boreonem.	Scots pine forest
Tiveden	SE01	58°43´	14°38´	230/190	82	104/42	boreonem.	mixed conif. forest,mire
Gårdsjön	SE04	58°03´	12°01´	138/114	91	3,7	boreonem.	mixed conif. forest
Svartedalen	SE12	58°02´	12°02´	170/127	81	195/77	boreonem.	mixed conif. forest, mire
N Kvill		57°46´	15°35´	230/155	81	60	boreonem.	mixed conif. forest
Bohult		57°17´	16°21´	78	84	-	boreonem.	mixed conif. forest
Aneboda	SE14	57°07´	14°32´	242/204	82	20	boreonem.	mixed conif. forest, mire
Berg	SE02	57°05´	12°46´	165/75	82	93	boreonem.	conif.+ decid. forest, bog
Sännen		56°20´	15°22´	100/65	82	-	boreonem.	mixed conif. forest
Tostarp	SE13	56°01´	13°14´	185/80	89	200	nemoral	beech forest
Dalby		55°40´	13°20´	65	82	-	nemoral	mixed decid. forest

ICP-IM code: code in the international IM data base latitude/longitude: of runoff point or, where missing, of sample plot alt. (m) max/min: altitude of highest/lowest point start year: when the site was established in IM size (ha): given when the site is a catchment biome: physical geographical zones acc. to the Nordic Council of Ministers (1983. Representative biomes in Norden. nu 1983:2. Stockholm. In Swedish) More information on the former sites may be obtained from contact persons at the Department of Environmental Assessment, SLU.

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