Standardized relative biomass indices (mean kg/tow) for northern shrimp predators in the western Gulf of Maine.
Indices from offshore spring and fall surveys were calibrated for changes in survey methods beginning in 2009. Shaded bar highlights 2012, when the shrimp decline became apparent. Dashed line indicates standardized biomass = 0.85. Species were selected for further consideration if they had a standar...
Main Authors: | , |
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Format: | Still Image |
Language: | unknown |
Published: |
2021
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Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pone.0253914.g007 |
Summary: | Indices from offshore spring and fall surveys were calibrated for changes in survey methods beginning in 2009. Shaded bar highlights 2012, when the shrimp decline became apparent. Dashed line indicates standardized biomass = 0.85. Species were selected for further consideration if they had a standardized biomass index above 0.85 in 2012. |
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