Since data collection began in 1990, the abundance of adult female blue crabs has peaked three times: first in 1991 when abundance reached 227 million, second in 2010 when abundance reached 246 million and third in 2017 when abundance reached a record-high 254 million. The Blue Crab Abundance Outcome is on course and is expected to be met by 2025.Īdult Female Blue Crab Abundance (1990-2022) In addition, the female exploitation rate has not fallen below the threshold since 2008, which suggests that management The adult female blue crab abundance has not fallen below the threshold since 2014, indicating that the population is sustainable.
#BLUE CRAB SIZE DRIVERS#
CBSAC is in the process of identifying the key drivers to be addressed and will discuss how these factors might be incorporated into future stock assessments at a workshop in September 2022. Although it is well known that blue crab populations exhibit natural annual variability due to their biology and other environmental factors such as temperature, coastal currents, weather patterns, and predation, the Chesapeake Bay Stock Assessment Committee (CBSAC) is interested in better understanding how these factors drive blue crab population dynamics. This number is lower than the target of 196 million, but above the 72.5 million threshold that is considered to be the minimum sustainable level for female blue crabs in the Bay. Climate Monitoring and Assessment Outcomeīetween 20, the abundance of adult (age 1+) female blue crabs in the Chesapeake Bay decreased 39% from 158 million to 97 million.Environmental Literacy Planning Outcome.Land Use Methods and Metrics Development Outcome.Toxic Contaminants Policy and Prevention Outcome.Water Quality Standards Attainment and Monitoring Outcome.2025 Watershed Implementation Plans (WIPs) Outcome.2017 Watershed Implementation Plans (WIPs) Outcome.Submerged Aquatic Vegetation (SAV) Outcome.
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