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Evaluation of Fine Sediment Intrusion into Whitlock‐Vibert Boxes
Author(s) -
Garrett James W.,
Bennett David H.
Publication year - 1996
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8675(1996)016<0448:eofsii>2.3.co;2
Subject(s) - intrusion , sediment , geology , significant difference , mineralogy , trap (plumbing) , mining engineering , environmental science , geochemistry , geomorphology , mathematics , statistics , environmental engineering
We compared the amount of fine sediments intruding into gravels contained in buried Whitlock–Vibert (W–V) boxes to that of surrounding spawning gravels. Fine sediments (<0.83 mm) increased significantly in W–V boxes and in surrounding gravels from September to March. Difference in intrusion of fines smaller than 0.83 mm was not significant between W–V boxes wrapped in plastic screening and surrounding gravels ( P > 0.12) or between unwrapped W–V boxes and surrounding gravel ( P > 0.33). Comparison of increase in percent fines smaller than 2.0 mm between unwrapped boxes and surrounding gravels revealed no statistical difference ( P = 0.52), with high test power (0.9032). Our study indicates that W–V boxes will not trap or accumulate fine sediments in amounts significantly different from surrounding gravels; therefore, their use can provide representative results in incubation studies.