TY - JOUR
T1 - Impact of Oil-Spill Contamination on a Soil Bacterial Community
T2 - A 40-Year History of Rehabilitation in the Arava Valley
AU - Girsowicz, Ruben
AU - Koryachenko, Oksana
AU - Sherman, Chen
AU - Mayzlish-Gati, Einav
AU - Doniger, Tirza
AU - Steinberger, Yosef
N1 - Publisher Copyright:
© 2018 Taylor & Francis Group, LLC.
PY - 2018/4/3
Y1 - 2018/4/3
N2 - The present study evaluated the effect of crude oil contamination on a microbial community in hyper-arid soils. The Evrona Nature Reserve of Israel, situated in the Arava, was exposed twice in the last 40 years to petroleum-hydrocarbon-spill pollution. The first pollution event took place 40 years ago and was never treated, presenting a unique future time-point perspective to the second (2014) contamination event. Soil samples were collected after the second spill, and abiotic properties and bacterial diversity in the sampled soil were analyzed. The results showed that there is a significant decrease over time in the number of observed bacterial species in the contaminated samples, coupled together with bacterial species replacement toward species capable of using source oil as the sole carbon and energy source. The presence of petroleum in soil significantly changed the composition and functional diversity of a microbial community, and the Evrona Nature Reserve is still in the middle of a bioremediation process even 40 years after the crude oil contamination.
AB - The present study evaluated the effect of crude oil contamination on a microbial community in hyper-arid soils. The Evrona Nature Reserve of Israel, situated in the Arava, was exposed twice in the last 40 years to petroleum-hydrocarbon-spill pollution. The first pollution event took place 40 years ago and was never treated, presenting a unique future time-point perspective to the second (2014) contamination event. Soil samples were collected after the second spill, and abiotic properties and bacterial diversity in the sampled soil were analyzed. The results showed that there is a significant decrease over time in the number of observed bacterial species in the contaminated samples, coupled together with bacterial species replacement toward species capable of using source oil as the sole carbon and energy source. The presence of petroleum in soil significantly changed the composition and functional diversity of a microbial community, and the Evrona Nature Reserve is still in the middle of a bioremediation process even 40 years after the crude oil contamination.
KW - Evrona nature reserve
KW - bacterial diversity
KW - pollution
KW - soil environment
UR - http://www.scopus.com/inward/record.url?scp=85043580273&partnerID=8YFLogxK
U2 - 10.1080/15320383.2018.1443427
DO - 10.1080/15320383.2018.1443427
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AN - SCOPUS:85043580273
SN - 1532-0383
VL - 27
SP - 175
EP - 185
JO - Soil and Sediment Contamination
JF - Soil and Sediment Contamination
IS - 3
ER -