{"title":"Piburger See - Austria","id":{"prefix":"https:\/\/deims.org\/","suffix":"ed1f621f-d337-4a3c-9cf1-7be144fc556c"},"type":"site","created":"2012-12-25T18:53:44+01:00","changed":"2024-10-22T16:55:54+02:00","attributes":{"affiliation":{"networks":[{"network":{"name":"ILTER","id":{"prefix":"https:\/\/deims.org\/networks\/","suffix":"1aa7ccb2-a14b-43d6-90ac-5e0a6bc1d65b"}},"siteCode":null,"verified":true},{"network":{"name":"LTER Austria","id":{"prefix":"https:\/\/deims.org\/networks\/","suffix":"d45c2690-dbef-4dbc-a742-26ea846edf28"}},"siteCode":"LTER_EU_AT_020","verified":true},{"network":{"name":"LTER Europe","id":{"prefix":"https:\/\/deims.org\/networks\/","suffix":"4742ffca-65ac-4aae-815f-83738500a1fc"}},"siteCode":null,"verified":true}],"projects":[{"label":"NETLAKE Cost Action ES1201","uri":null}]},"contact":{"siteManager":[{"type":"person","name":"Ruben Sommaruga","email":"ruben.sommaruga@uibk.ac.at","orcid":"https:\/\/orcid.org\/0000-0002-1055-2461"}],"operatingOrganisation":[{"type":"organisation","name":"University of Innsbruck","url":"http:\/\/www.uibk.ac.at\/index.html.en","ror":"https:\/\/ror.org\/054pv6659"}],"metadataProvider":[{"type":"person","name":"Ruben Sommaruga","email":"ruben.sommaruga@uibk.ac.at","orcid":"https:\/\/orcid.org\/0000-0002-1055-2461"},{"type":"person","name":"Ulrike Nickus","email":"ulrike.nickus@uibk.ac.at","orcid":null}],"fundingAgency":null,"siteUrl":[{"title":"Piburger See","value":"https:\/\/www.uibk.ac.at\/ecology\/forschung\/lter\/piburgersee.html.de"}]},"general":{"abstract":"Piburger See is a small mountain lake in the Eastern Alps (Austria) and was part of the OECD study on eutrophication (OECD, 1980). This lake experienced cultural eutrophication during several decades in the 20th century. In the 1950s and 1960s, recreational activities increased with a concurrent rise in tourism, and increasing amounts of fertilisers were used on nearby fields (Pechlaner, 1968). This resulted in enhanced primary production and rising hypolimnetic oxygen depletion in the lake (Pechlaner, 1979). Lake restoration started in 1970 by exporting anoxic and nutrient-rich hypolimnetic waters with an Olszewski tube (Pechlaner, 1971, 1979). External nutrient loading was reduced by altering fertiliser application and by diverting sewage from a public bath (Psenner, Pechlaner \u0026 Rott, 1984). After the installation of the Olszewski tube in June 1970, phytoplankton biomass increased, accompanied by an increase in chlorophyll \u0022a\u0022 and total phosphorus (TP) (Rott, 1983; Tolotti \u0026 Thies, 2002). The period from 1970 until 1988 was characterised by a marked increase in the filamentous cyanobacterium Oscillatoria limosa C.A. Agardh, which became the dominant algal taxon in the lake and contributed up to 40% to the mean annual phytoplankton biovolume (Rott, 1976; Wolf, 1991). The response of  phytoplankton biovolume to lake restoration was delayed by two decades and re-oligotrophication of Piburger See began during the late-1980s (Pechlaner, 1979; Rott, 1983; Pipp \u0026 Rott, 1995). At present, Piburger See is oligomesotrophic (Tolotti \u0026 Thies, 2002). Since the early 2000s, chlorophyll \u0022a\u0022 and phytoplankton biovolume values suggest a reversing trend in lake trophic status with a rising contribution of diatoms including blooms of Asterionella formosa (Tolotti et al., 2005; Tolotti net al. 2012, Thies et al. 2012). Monitoring of lake water quality, control of deep water siphoning discharge and operation of gauges are current activities at this site. A rowing boat for lake water sampling is available. A smaller part of the lake has the status of a research area. During summer, tourism is an important factor at this site (public bath, rowing boats, angling, swimming, walking).","citation":null,"relatedIdentifiers":null,"status":{"label":"Operational","uri":"http:\/\/vocabs.lter-europe.net\/elter_cl\/10772"},"yearEstablished":1975,"yearClosed":null,"relatedSites":[{"typeOfRelationship":{"label":"belongs to","uri":"null"},"listOfSites":[{"type":"site","title":"LTSER Platform Austrian Central Alps (ACA) - Austria","id":{"prefix":"https:\/\/deims.org\/","suffix":"8cf20f01-7aa1-418b-a613-a95ceeb350dd"},"changed":"2026-03-26T15:54:54+0100"},{"type":"site","title":"eLTER Tyrolean Lakes - Austria","id":{"prefix":"https:\/\/deims.org\/","suffix":"8a0a9d3f-4d34-47f8-845e-6f089cd95354"},"changed":"2026-01-26T14:03:37+0100"}]}],"siteName":"Piburger See","shortName":"Piburger See","siteType":"Stationary land-based site","protectionLevel":[{"label":"Category II \u2013 National Park","uri":"http:\/\/dd.eionet.europa.eu\/vocabularyconcept\/cdda\/IucnCategoryValue\/II"}],"landUse":null,"images":[{"url":"https:\/\/deims.org\/sites\/default\/files\/2022-11\/Pbs1.jpg","alt":"View from a boat on Lake Piburg towards north (picture: Ruben Sommaruga)"},{"url":"https:\/\/deims.org\/sites\/default\/files\/2022-11\/PIB%20drone%201.png","alt":"Frozen over Lake Piburg from a bird\u0027s eye view (picture: Klemens Weisleitner)"},{"url":"https:\/\/deims.org\/sites\/default\/files\/2022-11\/20210531_123625Breitbild.jpg","alt":"Lake Piburg, view towards south (picture: Nikolaus schallhart"}]},"environmentalCharacteristics":{"airTemperature":{"yearlyAverage":6.2,"monthlyAverage":null,"unit":"\u00b0C","referencePeriod":null},"precipitation":{"yearlyAverage":700,"monthlyAverage":null,"unit":"mm","referencePeriod":null},"biogeographicalRegion":"alpine","biome":"freshwater_lakes","ecosystemType":[{"label":"Agricultural","uri":null},{"label":"Fresh Water Lakes","uri":null},{"label":"Lakes","uri":null}],"eunisHabitat":[{"label":"Bentho-pelagic habitats (X30)","uri":null},{"label":"Habitat complexes (X)","uri":null},{"label":"Inland surface waters (C)","uri":null},{"label":"Permanent mesotrophic lakes, ponds and pools (C1.2)","uri":null},{"label":"Permanent oligotrophic lakes, ponds and pools (C1.1)","uri":null},{"label":"Surface standing waters (C1)","uri":null}],"landforms":null,"geoBonBiome":["Fresh water lakes"],"geology":null,"hydrology":null,"soils":null,"vegetation":null},"geographic":{"boundaries":"POLYGON ((10.884211 47.197338, 10.88449 47.197542, 10.885692 47.197513, 10.886389 47.197258, 10.887119 47.196711, 10.890176 47.195771, 10.891507 47.194976, 10.89361 47.194298, 10.893513 47.193868, 10.891947 47.193686, 10.890402 47.193722, 10.889136 47.193351, 10.887612 47.193999, 10.886314 47.194765, 10.886292 47.195618, 10.885338 47.196099, 10.885413 47.196653, 10.884308 47.197061, 10.884211 47.197338))","coordinates":"POINT (10.889153 47.194728)","country":["Austria"],"elevation":{"avg":1650,"min":913,"max":2400,"unit":"msl"},"size":{"value":17,"unit":"ha"},"relatedLocations":[{"title":"Lake Piburg; water area","id":{"prefix":"https:\/\/deims.org\/locations\/","suffix":"309570fa-5f04-41c6-84fd-21d1e75d58e0"},"changed":"2024-05-07T14:23:06+0200"}]},"focusDesignScale":{"experiments":{"design":"partly experimentation","scale":"micro sites"},"observations":{"design":"mainly observation","scale":"sub-catchment within catchment"},"observedProperties":[{"label":"chlorophyll content of water","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/10088"},{"label":"conductivity","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22089"},{"label":"dissolved organic carbon in water","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/10307"},{"label":"lake temperature","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/10011"},{"label":"percent carbon","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22181"},{"label":"percent organic carbon","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22183"},{"label":"photosynthetically active radiation intensity","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22186"},{"label":"secchi depth","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22226"},{"label":"specific conductivity","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22289"},{"label":"total organic carbon","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22297"},{"label":"water alkalinity","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/10303"},{"label":"water depth","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22310"},{"label":"water parameter","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/20945"},{"label":"water temperature","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22313"},{"label":"water transparency","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/10392"},{"label":"water volume","uri":"http:\/\/vocabs.lter-europe.net\/EnvThes\/22316"}]},"infrastructure":{"accessibleAllYear":true,"accessType":"paved road","allPartsAccessible":true,"maintenanceInterval":30,"permanentPowerSupply":false,"operation":{"permanent":true,"notes":"previous EU projects: CLIME, EUROLIMPACS","siteVisitInterval":30},"notes":null,"collection":[{"label":"Boat","uri":null},{"label":"Central station(s)","uri":null},{"label":"GMS\/UMTS","uri":null},{"label":"No lodging possible","uri":null},{"label":"No tower on site","uri":null},{"label":"Other data services","uri":null},{"label":"Structured file","uri":null}],"data":{"policy":{"url":null,"rights":["Co-authorship on publications resulting from use of the dataset"],"notes":null}}},"relatedResources":[{"id":{"prefix":"https:\/\/deims.org\/dataset\/","suffix":"07346650-bb44-11e4-8676-005056ab003f"},"title":"Limnochemistry Data Piburger See 1963-2014","changed":"2019-12-20T13:21:59+01:00"},{"id":{"prefix":"https:\/\/deims.org\/dataset\/","suffix":"02118bc4-bb46-11e4-8676-005056ab003f"},"title":"Ice cover Piburger See 1965-2013","changed":"2019-12-20T13:21:59+01:00"}],"projectRelated":{"lter":{"lterSiteClassification":"Extensive Site"}}}}