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Rappoort nr 101: Uppföljning av färgtrafikens effecter och långtidsförändringar I algvegetationen i Ålands skärgård
(Åbo Akademi, Husö biologiska station, 2000)Large ferries affect the shore vegetation in two ways, by waves and the surge produced by the ferries. During the last 20 years, the ferries have been reconstructed for optimal speed, which has resu/ted in less waves. In ... -
Rapport 78: Undersökning av Boda-, Ivarskärs- och Svartsmarafjärden samt sjön Vargsundet på NW Åland sommaren 1990: hydrografi och vattenkvalitet
(1990)Hydrography and water quality were investigated in an archipelago area (Boda-, lvarskärs- and Svartsmarafjärden) in NW Åland in the summer of 1990. Temperature, conductivity, pH, Secchi depth, spatial distribution of ... -
Rapport 87: En inventering av fisksamhället i tre viksystem på Åland
(Åbo Akademi, Husö biologiska station, 1993)The fish communities of three areas of sheltered bays were studied from July to September, 1992, using Swedish standard gill- nets. Area 1, in NW Åland with three stations from Orrfjärden, a large bay in the inner archipelago ... -
Rapport nr 100: Förekomst av drivande alger och syrebrist i den nordvästra delen av Ålands skärgård
(Åbo Akademi, Husö biologiska station, 2000)The occurrence of drifting algal mats and hypoxia were investigated at 19 stations and along 5 transects in the archipelago of NW Atand in August and September 1999. The stations are genera/ly in the depth-range of 15 to ... -
Rapport nr 102: Effekter av drivande alger på fisket i havsområdet mellan Askö och Herröskatan, Lemland, SE Åland
(Åbo Akademi, Husö biologiska station, 2001)Local fishermen were interviewed in the investigated area between Askö and Herröskatan, Lemland, SE Åland. To strengthen the results from the interview, additional field work was conducted. In the study area, six stations ... -
Rapport nr 103: Långtidsstudie av bottenfaunans utveckling I den Åländska skärgården – en jämförelse mellan åren 1973, 1989 och 2000
(Åbo Akademi, Husö biologiska station, 2001)In the summer 2000 about 60 sites in the Aland archipelago were analysed with regard to zoobenthos and hydrography. The stations had previously been studied in 1973 and 1989, and represent gradients from inner, sheltered ... -
Rapport nr 104: Användning av perifytonfällor för bedömning av fiskodlingars eutrofierande effekt samt undersökning av nya kontroll- och referenspunkter för bottenfaunaprovtagning vid miljökontrollprogrammet för fiskodling på Åland
(Åbo Akademi, Husö biologiska station, 2002)Use of periphyton growth plates for monitoring purposes was studied in the summer of 2001 around five fish farms in the Aland archipelago. The gowth plates were incubated for two weeks and growth of periphyton was ... -
Rapport nr 105: Grundkartering av sex sjöar med tanke på deras användning som bevattningsvattentäkter
(Åbo Akademi, Husö biologiska station, 2002)In summer 2001, hydrography, zoobenthos, aquatic vegetation and standing crop of crayfish and fish Two of the studied lakes, Toböle träsk and Lavsböle träsk are used as drinking water reservoirs and the water in all six ... -
Rapport nr 106: Fiskens reproduktionspotential i Engrundsfjärden, norra Åland
(Åbo Akademi, Husö biologiska station, 2002)In summer 2002, a study of fish reproduction and aquatic vegetation was conducted in Engrundsfjärden, N Aland. The study area is ta a great extent very shallow and the aquatic vegetation consists mainly of charophytes. The ... -
Rapport nr 107: Undersökning av miljöeffekter av fiskodlingar (Andersö och Järsö) under avveckling
(Åbo Akademi, Husö biologiska station, 2002)A study on zoobenthos, hydrography, sediment and periphyton growth was conducted at two fish farm sites under closure in the Åland archipe/ago June-September 2002. The aim of the study was to collect base fine data for ... -
Rapport nr 108: Utvecklande av monitoring för trådformiga alger
(Åbo Akademi, Husö biologiska station, 2002)Occurrence of filamentous algae in shallow soft-bottom bays around Aland is/ands was studied from July to September 2002. The ground-truth studies, carried out in nine /ocalities, included surveys of macrophyte coverage, ... -
Rapport nr 109: Inverkan av vägbankar på vattenmiljön – uppföljande studier
(Åbo Akademi, Husö biologiska station, 2003)A study on hydrography, sediment, zoobenthos and vegetation was conducted at three road embankment areas in the Aland archipelago June-August 2003. The road embankment areas were previously studied shortly before or after ... -
Rapport nr 110: Återhämtning av vattenmiljön efter avvecklandet av fiskodlingar (Andersö och Järsö)
(Åbo Akademi, Husö biologiska station, 2004)A study concerning the recovery of the water environment at two former fish farm sites, Andersö and Järsö, in the NW Aland archipelago, was performed in the summer 2003. The environmental effects of the two fish farms have ... -
Rapport nr 111: Fisksamhällets sammansättning längs en skärgårdsgradient på NW Åland
(Åbo Akademi, Husö biologiska station, 2004)The structure of fish communities along an archipelago gradient in NW Aland was studied in the summer of 2003 as a follow-up study of earlier studies conducted in 1992 and 1997. Seven locations along the gradient were ... -
Rapport nr 112: Kartering av vattenlevande makrofyter längs två inner-ytterskärgårdsgradienter på nordvästra och sydöstra Åland
(Åbo Akademi, Husö biologiska station, 2005)As assigned by the Provincial Government of Atand Islands, a dive mapping of aquatic macrophytes (macroscopic algae and plants) was carried out in the archipe/ago of Aland Islands. The survey was done a/ong two gradients ... -
Rapport nr 113: Förekomst av adult fisk i grunda havsvikar på Åland
(Åbo Akademi, Husö biologiska station, 2005)Six shallow bays in the archipe/ago of NW and East Atand were studied on fish and fish migratory parameters on five occasions during late spring and summer (4-9.5, 23-28.5, 18-22. 7, 2-8.8 , 16- 19.8, 2004). The results ... -
Rapport nr 114: Fisksamhällets tillstånd på Kökar, SE Åland
(Åbo Akademi, Husö biologiska station, 2005)A first attempt to a holistic survey of fish fauna in the Käkar area, Aland, was done during summer 2005. Local fishermen have for a /anger time complained about decreased fish catches, and thus this investigation was ... -
Rapport nr 115: Testning av parametrar (klorofyll-a och djuputbredning av blåstång, Fucus vesiculosus) för beskrivning av biologiska kvalitetsfaktorer enligt EU:s ramdirektiv för vatten
(Åbo Akademi, Husö biologiska station, 2006)In association ta the EU Water Framework Directive (WFO) all coastal areas in member countries are characterized and classified. This cancerns also the Aland Islands. The WFD gives a possibility to describe the Biological ... -
Rapport nr 116: Kartering av fiskbestånd på Föglö, SE Åland
(Åbo Akademi, Husö biologiska station, 2007)In the summer of 2006 Föglö was investigated as the second survey area in the long term project of fish stock survey on Åland. Seining for juvenile fish and adult smallsized fish species were performed on Föglö and in ... -
Rapport nr 117: Bottenfaunan och hydrografin i den åländska ytterskärgården sommaren 2006
(Åbo Akademi, Husö biologiska station, 2007)The benthic fauna was investigated in the archipelago of the Åland Islands during the summer of 2006. In total, 27 stations were sampled for both zoobenthos and hydrography. The stations are located in the depth interval ...
