Alterations in soil microbial activity and N-transformation processes due to sulfadiazine loads in pig-manure.
Most veterinary drugs enter the environment via manure application. However, it is unclear how these substances interact with soil biota. Therefore, it was the aim of the present study to investigate the effects of manure containing different concentrations of the antibiotic sulfadiazine (SDZ) on the soil microbial communities. It was shown that manure alone has a stimulating effect on microbial activity. Only potential nitrification was negatively influenced by manure application. The addition of SDZ to the manure reduced microbial activity. Depending on the SDZ concentration, levels of activity were in the range of the control soil without manure application. Also, selected processes in nitrogen turnover were negatively influenced by the addition of SDZ to the manure, with nitrification being the only exception. The effects were visible for up to 4 days after application of the manure with or without SDZ and were correlated with the bioavailability of the antibiotic.
Kotzerke
Anja
A
Berlin University of Technology, Institute of Ecology, Franklinstrasse 29, 10587 Berlin, Germany. anja.kotzerke@tu-berlin.de
Sharma
Shilpi
S
Schauss
Kristina
K
Heuer
Holger
H
Thiele-Bruhn
Sören
S
Smalla
Kornelia
K
Wilke
Berndt-Michael
BM
Schloter
Michael
M
D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D004784:Environmental Monitoring / Q000379:methods; D007220:Industrial Waste; D008372:Manure; D009584:Nitrogen / Q000378:metabolism*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism / Q000633:toxicity*; D013411:Sulfadiazine / Q000378:metabolism / Q000633:toxicity*; D013552:Swine; D013995:Time; D019155:Veterinary Drugs / Q000378:metabolism / Q000633:toxicity*
D007220:Industrial Waste; D008372:Manure; D012989:Soil Pollutants; D019155:Veterinary Drugs; D013411:Sulfadiazine; D009584:Nitrogen