Sammanfattning

We reviewed 122 peer-reviewed studies on the effects of organic toxicants and heavy metals on three fundamental ecosystem functions in freshwater ecosystems, i.e. leaf litter breakdown, primary production and community respiration. From each study meeting the inclusion criteria, the concentration resulting in a reduction of at least 20% in an ecosystem function was standardized based on median effect concentrations of standard test organisms (i.e. algae and daphnids). For pesticides, more than one third of observations indicated reductions in ecosystem functions at concentrations that are assumed being protective in regulation. Moreover, the reduction in leaf litter breakdown was more pronounced in the presence of invertebrate decomposers compared to studies where only microorganisms were involved in this function. High variability within and between studies hampered the derivation of a concentration effect relationship. Hence, if ecosystem functions are to be included as protection goal in chemical risk assessment standardized methods are required. (C) 2013 Elsevier Ltd. All rights reserved.

Nyckelord

Decomposition; Primary production; Community respiration; Toxic units; Aquatic

Publicerad i

Environmental Pollution
2013, Volym: 180, sidor: 324-329
Utgivare: ELSEVIER SCI LTD

SLU författare

• Bundschuh, Mirco

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    
  • Universität Koblenz-Landau

Globala målen

SDG6 Säkerställa tillgången till och en hållbar förvaltning av vatten och sanitet för alla
SDG15 Skydda, återställa och främja ett hållbart nyttjande av landbaserade ekosystem, hållbart bruka skogar, bekämpa ökenspridning, hejda och vrida tillbaka markförstöringen samt hejda förlusten av biologisk mångfald


UKÄ forskningsämne

Annan biologi


Publikationens identifierare

DOI: https://doi.org/10.1016/j.envpol.2013.05.025

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/50483