Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributorUniversity of Maryland. Natural Resources Institute.-
dc.contributor.authorO'Connor, J. M.-
dc.contributor.authorNeumann, D. A.-
dc.contributor.authorSherk, J. Albert.-
dc.descriptionTechnical Paper-
dc.descriptionAbstract: A 3-year laboratory study identified certain estuarine fish sensitive to the effects of particle size and concentration of (A.) suspended mineral solids similar in size to sediments likely to be found in estuarine systems in concentrations typically found during flooding, dredging, and disposal of dredged material, and (B.) natural sediments in identical experiments. Significant mortality of estuarine fish was demonstrated at these suspended mineral solid concentrations. Estuarine fish were classified, using static bioassays as : Tolerant (24-hour LC𝟣𝟢 ≥ 10 grams per liter), sensitive (10 grams per liter > 24-hour LC𝟣𝟢 > 1.0 gram per liter), or highly sensitive (24-hour LC𝟣𝟢 ≤ 1.0 gram per liter) to fuller's earth suspensions. Generally, bottom-dwelling fish species were most tolerant to suspended solids; filter feeders were most sensitive. Early life stages were more sensitive to suspended solids than adults; filter feeders were most sensitive. Bioassays with natural sediments indicated that suspensions of natural muds affected fish in the same way as fuller's earth, but higher concentrations of natural material were required to produce the same level of response. The effect of finely divided solids on fish was dependent on concentration, particle-size distribution, and angularity of the suspended particles. The cause of death was the same in all experiments -- anoxia. This study provides base-line information for preproject decision making based upon the anticipated concentration of suspended sediments at the project site and the effect of various lengths of exposure on estuarine fish of different life-history stages and habitat preference.-
dc.publisherCoastal Engineering Research Center (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical paper (Coastal Engineering Research Center (U.S.)) ; no.76-20.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectEstuarine fish-
dc.subjectSuspended sediments-
dc.subjectMineral solids-
dc.subjectNatural sediments-
dc.subjectPatuxent River-
dc.subjectLethal effects-
dc.subjectSuspended solids-
dc.subjectEstuarine ecology-
dc.subjectMarine life-
dc.titleLethal effects of suspended sediments on estuarine fish-
Appears in Collections:Technical Paper

Files in This Item:
File Description SizeFormat 
CERC-TP-76-20.pdf6.79 MBAdobe PDFThumbnail