Sammanfattning

irgarol is a triazine photosystem II (PSII) inhibitor that has been used in Sweden as an antifouling ingredient since the 1990s. Early microcosm studies indicated that periphyton was sensitive to irgarol at concentrations regularly found in harbours and marinas. However, field studies of irgarol effects on the Swedish west coast in 1994, using the pollution-induced community tolerance (PICT) approach, failed to detect any effects of the toxicant in the field. A PICT study involves sampling of replicate communities in a gradient of contamination, and a comparison of their community tolerance levels, with an increase being an indication that sensitive species have been eliminated and replaced by more tolerant ones. Typically, short-term assays are used to quantify the community tolerance levels. Later PICT studies in the same area over a 10 year period demonstrate that irgarol tolerance levels have increased, although the contamination pattern has been stable. Our results support the hypothesis that that the PICT potential was low initially, due to a small differential sensitivity between the community members, and that a persistent selection pressure was required to favour and enrich irgarol-tolerant species or genotypes. (C) 2008 Elsevier Ltd. All rights reserved.

Nyckelord

Pollution-induced community tolerance; Gullmar fjord mouth; Photosynthesis; Photosystem II inhibitor; Microphytobenthos; Microalgae

Publicerad i

Marine Pollution Bulletin
2009, Volym: 58, nummer: 2, sidor: 230-237
Utgivare: PERGAMON-ELSEVIER SCIENCE LTD

SLU författare

• Birgersson, Göran

  • Institutionen för växtskyddsbiologi, Sveriges lantbruksuniversitet
    

• Kylin, Henrik

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

Associerade SLU-program

Giftfri miljö


Globala målen

SDG6 Säkerställa tillgången till och en hållbar förvaltning av vatten och sanitet för alla
SDG14 Bevara och nyttja haven och de marina resurserna på ett hållbart sätt för en hållbar utveckling
SDG3 Säkerställa hälsosamma liv och främja välbefinnande för alla i alla åldrar


UKÄ forskningsämne

Miljö- och naturvårdsvetenskap
Fisk- och akvakulturforskning


Publikationens identifierare

DOI: https://doi.org/10.1016/j.marpolbul.2008.09.021

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/50013