Experimental oil exposure of Ascophyllum nodosum (L.) Le Jolis
Identifieur interne : 005123 ( Istex/Checkpoint ); précédent : 005122; suivant : 005124Experimental oil exposure of Ascophyllum nodosum (L.) Le Jolis
Auteurs : Kjersti Sj Tun [Norvège] ; Tor Eiliv Lein [Norvège]Source :
- Journal of Experimental Marine Biology and Ecology [ 0022-0981 ] ; 1993.
Descripteurs français
- Wicri :
- topic : Biomasse, Hydrocarbure, Littoral.
English descriptors
- KwdEn :
- Adult plants, Apical tips, Artificial shore, Ascophyilum nodosum, Ascophyllum, Ascophyllum nodosum, Asterisk, Asterisk marks, Average length, Average lengths, Bergen, Biomass, Certain period, Chromatogram, Confidence limits, Control basin, Control germlings, Control plants, Crude oils, Daily exposure, Equal height, Fucus, Fucus vesiculosus, Germlings, Good recruitment, Granite plates, Growth rate, Growth rates, Growth variation, Hydrocarbon, Inner oslofjord, June, Laboratory experiment, Lein, Lein sjotun, Length growth, Light conditions, Littoral, Littoral communities, Littoral zone, Marine biology, Marine ecosystems, Necrotic damage, Negative effects, Nodosum, Nodosum germlings, Nodosum plants, Other hand, Outdoor basin, Outdoor basins, Outdoor experiment, Petroleum hydrocarbons, Potential germlings, Regular intervals, Seaweed symp, Significant correlation, Significant difference, Significant variance, Spill, Steele hanisak, Surface area, Vandermeulen ahern, Water inlet, Water temperatures, Weathered, Weathered crude, Wrack, Zygote.
- Teeft :
- Adult plants, Apical tips, Artificial shore, Ascophyilum nodosum, Ascophyllum, Ascophyllum nodosum, Asterisk, Asterisk marks, Average length, Average lengths, Bergen, Biomass, Certain period, Chromatogram, Confidence limits, Control basin, Control germlings, Control plants, Crude oils, Daily exposure, Equal height, Fucus, Fucus vesiculosus, Germlings, Good recruitment, Granite plates, Growth rate, Growth rates, Growth variation, Hydrocarbon, Inner oslofjord, June, Laboratory experiment, Lein, Lein sjotun, Length growth, Light conditions, Littoral, Littoral communities, Littoral zone, Marine biology, Marine ecosystems, Necrotic damage, Negative effects, Nodosum, Nodosum germlings, Nodosum plants, Other hand, Outdoor basin, Outdoor basins, Outdoor experiment, Petroleum hydrocarbons, Potential germlings, Regular intervals, Seaweed symp, Significant correlation, Significant difference, Significant variance, Spill, Steele hanisak, Surface area, Vandermeulen ahern, Water inlet, Water temperatures, Weathered, Weathered crude, Wrack, Zygote.
Abstract
Abstract: The effect of weathered, crude oil on Ascophyllum nodosum was tested in an outdoor experiment and in a laboratory experiment. Adult A. nodosum plants which were exposed to oil in an outdoor basin for 3 days showed reduced growth for a certain period of time, after which growth recovered. Also, some necrotic damage was observed. Three-week-old and 1-year-old germlings placed under the adult plants showed no significant reduction in number compared to control plants. In the laboratory experiment some of the 1-month-old germlings were initially exposed to oil for 6 min, some for 1 h, some for 3 h and some for 5 h. After 3 weeks in running, filtered water oil-exposed germlings had reached the same length as those in the control groups, and no effect of exposing the germlings to oil for different lengths of time at the start of the experiment was found. The results indicate that a limited oil pollution of weathered, crude oil may reduce growth and biomass of adult plants for a certain period of time. However, this need not be detrimental to a population with good recruitment from germlings or vegetative shoots growing under a dense canopy layer.
Url:
DOI: 10.1016/0022-0981(93)90152-E
Affiliations:
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ISTEX:691601CA505AABDB62F06CF003C90633933A50B5Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult plants</term>
<term>Apical tips</term>
<term>Artificial shore</term>
<term>Ascophyilum nodosum</term>
<term>Ascophyllum</term>
<term>Ascophyllum nodosum</term>
<term>Asterisk</term>
<term>Asterisk marks</term>
<term>Average length</term>
<term>Average lengths</term>
<term>Bergen</term>
<term>Biomass</term>
<term>Certain period</term>
<term>Chromatogram</term>
<term>Confidence limits</term>
<term>Control basin</term>
<term>Control germlings</term>
<term>Control plants</term>
<term>Crude oils</term>
<term>Daily exposure</term>
<term>Equal height</term>
<term>Fucus</term>
<term>Fucus vesiculosus</term>
<term>Germlings</term>
<term>Good recruitment</term>
<term>Granite plates</term>
<term>Growth rate</term>
<term>Growth rates</term>
<term>Growth variation</term>
<term>Hydrocarbon</term>
<term>Inner oslofjord</term>
<term>June</term>
<term>Laboratory experiment</term>
<term>Lein</term>
<term>Lein sjotun</term>
<term>Length growth</term>
<term>Light conditions</term>
<term>Littoral</term>
<term>Littoral communities</term>
<term>Littoral zone</term>
<term>Marine biology</term>
<term>Marine ecosystems</term>
<term>Necrotic damage</term>
<term>Negative effects</term>
<term>Nodosum</term>
<term>Nodosum germlings</term>
<term>Nodosum plants</term>
<term>Other hand</term>
<term>Outdoor basin</term>
<term>Outdoor basins</term>
<term>Outdoor experiment</term>
<term>Petroleum hydrocarbons</term>
<term>Potential germlings</term>
<term>Regular intervals</term>
<term>Seaweed symp</term>
<term>Significant correlation</term>
<term>Significant difference</term>
<term>Significant variance</term>
<term>Spill</term>
<term>Steele hanisak</term>
<term>Surface area</term>
<term>Vandermeulen ahern</term>
<term>Water inlet</term>
<term>Water temperatures</term>
<term>Weathered</term>
<term>Weathered crude</term>
<term>Wrack</term>
<term>Zygote</term>
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<term>Ascophyilum nodosum</term>
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<term>Ascophyllum nodosum</term>
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<term>Asterisk marks</term>
<term>Average length</term>
<term>Average lengths</term>
<term>Bergen</term>
<term>Biomass</term>
<term>Certain period</term>
<term>Chromatogram</term>
<term>Confidence limits</term>
<term>Control basin</term>
<term>Control germlings</term>
<term>Control plants</term>
<term>Crude oils</term>
<term>Daily exposure</term>
<term>Equal height</term>
<term>Fucus</term>
<term>Fucus vesiculosus</term>
<term>Germlings</term>
<term>Good recruitment</term>
<term>Granite plates</term>
<term>Growth rate</term>
<term>Growth rates</term>
<term>Growth variation</term>
<term>Hydrocarbon</term>
<term>Inner oslofjord</term>
<term>June</term>
<term>Laboratory experiment</term>
<term>Lein</term>
<term>Lein sjotun</term>
<term>Length growth</term>
<term>Light conditions</term>
<term>Littoral</term>
<term>Littoral communities</term>
<term>Littoral zone</term>
<term>Marine biology</term>
<term>Marine ecosystems</term>
<term>Necrotic damage</term>
<term>Negative effects</term>
<term>Nodosum</term>
<term>Nodosum germlings</term>
<term>Nodosum plants</term>
<term>Other hand</term>
<term>Outdoor basin</term>
<term>Outdoor basins</term>
<term>Outdoor experiment</term>
<term>Petroleum hydrocarbons</term>
<term>Potential germlings</term>
<term>Regular intervals</term>
<term>Seaweed symp</term>
<term>Significant correlation</term>
<term>Significant difference</term>
<term>Significant variance</term>
<term>Spill</term>
<term>Steele hanisak</term>
<term>Surface area</term>
<term>Vandermeulen ahern</term>
<term>Water inlet</term>
<term>Water temperatures</term>
<term>Weathered</term>
<term>Weathered crude</term>
<term>Wrack</term>
<term>Zygote</term>
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<front><div type="abstract" xml:lang="en">Abstract: The effect of weathered, crude oil on Ascophyllum nodosum was tested in an outdoor experiment and in a laboratory experiment. Adult A. nodosum plants which were exposed to oil in an outdoor basin for 3 days showed reduced growth for a certain period of time, after which growth recovered. Also, some necrotic damage was observed. Three-week-old and 1-year-old germlings placed under the adult plants showed no significant reduction in number compared to control plants. In the laboratory experiment some of the 1-month-old germlings were initially exposed to oil for 6 min, some for 1 h, some for 3 h and some for 5 h. After 3 weeks in running, filtered water oil-exposed germlings had reached the same length as those in the control groups, and no effect of exposing the germlings to oil for different lengths of time at the start of the experiment was found. The results indicate that a limited oil pollution of weathered, crude oil may reduce growth and biomass of adult plants for a certain period of time. However, this need not be detrimental to a population with good recruitment from germlings or vegetative shoots growing under a dense canopy layer.</div>
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