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Human-caused Mortality and Injury of NMFS-managed Alaska Marine Mammal Stocks, 2012-2016
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2019
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Description:The Marine Mammal Protection Act (MMPA, 1972) requires the National Oceanic and Atmospheric Administration (NOAA), National Marine Fisheries Service (NMFS), to estimate the annual human-caused mortality and serious injury of marine mammal stocks by source (MMPA, section 117) and to classify commercial fisheries based on each fishery’s rate of incidental mortality and serious injury of marine mammals (MMPA, section 118). NMFS evaluates the annual level of known human-caused mortality and serious injury for each stock from all sources, including specific commercial fishing operations, relative to the potential biological removal (PBR) levels calculated under the MMPA (Wade 1998). Mortality events are summed, assigned to source, and annual mortality estimates calculated. Assessing the severity of an injury and likelihood that an injury will result in mortality requires information about the biology of the animal, the type and severity of the injury, and the injury source. Thorough examination of human-caused injuries to marine mammals is often not possible because these events often occur in extremely remote areas of Alaska and observed injuries are often not documented in sufficient detail to understand the level of injury severity.
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Rights Information:Public Domain
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Compliance:Submitted
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