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  • 1
    Electronic Resource
    Electronic Resource
    Effects of a dimethylnaphthalene-contaminated food source and daily fluctuating temperatures on the survival potential of the estuarine shrimp Palaemonetes pugio (1981)
    Springer
    Marine biology 63 (1981), S. 227-233 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The biological effects of a naturally occurring perturbation were compared with one which may be induced by man's activities in the coastal zone. The estuarine shrimp Palaemonetes pugio was exposed for 32 d to fluctuating (18°–22°C) temperatures (FT) and/or 2,6-dimethylnaphthalene (DMN)-contaminated food at a concentration of 0.24 μg DMN g-1 wt food. After exposure, relative survival rates were evaluated in a matrix of environmental challenge tests. Low salinity (2‰ S) had little overall effect on survival. Survival at elevated temperatures (33°C) was significantly lower than in reduced salinity and was independent of the treatment effects. Resistance to the challenge of hypoxia+reduced salinity, however, in contrast to the other tests, was significantly reduced by exposure to FT and DMN-contaminated food. The influence of FT was much stronger and obscured the effects of DMN-contaminated food when shrimp were exposed to both perturbations at the same time. The persistent, residual effects of FT and DMN-contaminated food on the survival of P. pugio during exposure to hypoxia were evaluated after a 16-d recovery period with stable temperatures and uncontaminated food. The initial deleterious effects of FT appeared to be ameliorated by the stable temperatures. On the other hand, shrimp which had ingested DMN-contaminated food, prior to the clean food, exhibited enhanced survival during exposure to hypoxia. After ingesting contaminated food for 32 d, P. pugio contained concentrations of DMN approximately 1 order of magnitude greater than that in the food. Shrimp kept in FT generally had higher concentrations of DMN than shrimp held in stable temperatures. Feeding uncontaminated food to contaminated shrimp for 16 d resulted in a significant reduction of DMN in the tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00395991
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of acute changes in temperature and salinity on pulsation rates in ephyrae of the scyphozoan Aurelia aurita (1977)
    Springer
    Marine biology 42 (1977), S. 31-35 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The response of Aurelia aurita ephyrae to abrupt temperature and salinity differentials is expressed as changes in bell pulsation rates. Acute temperature rate-responses of Texas (USA) ephyrae reflect a reduced temperature sensitivity over a broad range (10° to 35°C), with a Q10 value of 0.97 between 20° and 25°C. The initial relationship between salinity change and pulsation rate is linear and direct. This pattern is disrupted after 24 h, with those ephyrae experiencing a salinity decrease pulsing significantly faster than those experiencing no change or an increase in salinity. This response to low salinities dissipates after 2 days. Holding osmotic pressure constant and disrupting ionic ratios has more of an immediate and persistent effect than solely decreasing salinity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00392011
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  • 3
    Electronic Resource
    Electronic Resource
    Near-surface turbulence measurements in a lake (1981)
    [s.l.] : Nature Publishing Group
    Nature 290 (1981), S. 390-392 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The probe is a miniaturized version of a high-frequency temperature profiler used previously in upper ocean studies1. The probe body is a 2.5-cm diameter cylinder, 70-cm long, containing thermistor amplifiers and a pressure transducer. A toroidal buoyancy element 10 cm in diameter and 25-cm long ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/290390a0
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  • 4
    Electronic Resource
    Electronic Resource
    Catastrophic events in a surface mixed layer (1978)
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 601-602 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] While taking microstructure profiles at Ocean Station P (50N, 145 W) during August 1977, we observed a storm of substantial intensity (maximum wind speed 20 ms-1) which lasted 48 h. Temperature profiles were taken from the RV Oceanographer with the microstructure profiler (MSP)4, a winged ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/276601a0
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  • 5
    Electronic Resource
    Electronic Resource
    Mercury and the estuarine marsh clam,Rangia Cuneata gray. I. Toxicity (1977)
    Springer
    Archives of environmental contamination and toxicology 6 (1977), S. 249-255 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Mercury is relatively toxic toRangia when exposed to initial high concentrations (1 to 6 ppm) followed by low sustained levels (0.013 to 0.432 ppm). Acclimation to low salinity (2 o/ooS) lessens the toxic effect of mercury. Actual concentrations of mercury causing 50% mortality (LC50) in 96 hr are 122 ppb in 2 o/ooS and 58 ppb in 15 o/ooS.Rangia's ability to survive acute mercury exposure (0.87±0.15 ppm) is enhanced by low level (8.56±2.54 ppb) contamination followed by a brief period (9 days) in clean sea water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02097766
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  • 6
    Electronic Resource
    Electronic Resource
    The effects of storage temperature and time on sediment toxicity (1994)
    Springer
    Archives of environmental contamination and toxicology 27 (1994), S. 51-53 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The toxicity of an estuarine sediment stored at different temperatures (−22°C, 4°C, and 25°C) was monitored over time (at 0, 2, 4, 7, and 20 weeks) by conducting 96 h suspended particulate phase (SPP) tests with 24- to 48-h-old Mysidopsis bahia. Toxicity generally increased with time for sediments stored at 4°C and −22°C. For both temperature treatments, survival was reduced from 40% at week 0 to 〈10% at week 12. Survival at 25°C was much more variable, fluctuating between 10% and 90% during the experiment. Reference toxicant tests with sodium dodecyl sulfate (SDS) were conducted throughout the sediment storage experiment. Relative sensitivity to SDS was similar at all time periods except for week 20 where decreased sensitivity was observed. This decreased sensitivity to the reference toxicant corresponded to a significant and uniform increase in survival to all stored sediment samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203887
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  • 7
    Electronic Resource
    Electronic Resource
    Toxicity and sublethal effects of no. 2 fuel oil on the supralittoral isopodLygia exotica (1978)
    Springer
    Bulletin of environmental contamination and toxicology 20 (1978), S. 320-327 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary 1. No. 2 fuel oil was of relatively low toxicity to the intertidal isopod Lygiaexotica as indicated by the TLm values of over 100% for the WSF and 73 ppm at 24 and 48 hours and 36.5 ppm at 96 hours for the OWD. 2. Respiration was not significantly affected by short term exposure to several concentrations of No.2 fuel oil prepared as either a WSF or OWD. 3. Lygia contaminated by a spill of No. 2 fuel oil and Bunker C residual oil contained high concentrations of dibenzothiophenes. It is not known whether the dibenzothiophenes were accumulated by theLygia tissues or adsorbed to the exoskeleton. Therefore, the high mortality ofLygia following the spill cannot yet be attributed to the dibenzothiophenes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01683527
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  • 8
    Electronic Resource
    Electronic Resource
    Dietary accumulation of dimethylnaphthalene by the grass shrimpPalaemonetes pugio under stable and fluctuating temperatures (1982)
    Springer
    Bulletin of environmental contamination and toxicology 28 (1982), S. 149-153 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01608567
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  • 9
    Electronic Resource
    Electronic Resource
    Chronic Toxicity of Phenanthrene to the Marine Polychaete Worm, Nereis (Neanthes) arenaceodentata (1996)
    Springer
    Bulletin of environmental contamination and toxicology 56 (1996), S. 265 -270 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900040
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  • 10
    Electronic Resource
    Electronic Resource
    Acute toxicity of PCB congeners toDaphnia magna andPimephales promelas (1991)
    Springer
    Bulletin of environmental contamination and toxicology 46 (1991), S. 208-215 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01691939
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