The Earth & Environmental Science Department's Environmental Case Studies, ENVS301, Final Project Conference

The Recovery of the North Atlantic Swordfish

This case study focuses on the recovery of the North Atlantic Swordfish (ATN) over the latter decades of the 20th century and the early decades of the 21st. It will discuss the conservation methods that allowed for the preservation of the species by analyzing the various techniques used to restore the species and evaluate the varying successes of each. Techniques analyzed include limited number of longlining vessels, minimum size limits, retention limits, closures in regions of high bycatch, tracking systems, use of specific hook, classroom settings  and observation programs. This case study provides the opportunity to establish a roadmap for other overexploited species to recover. Based on the timing of recovery and relative impact of each external effect, the findings of the study were that the limiting of longlining vessels, reduction in total allowable catch,  and minimum size limits were the most effective methods of allowing the fishery achieve its recovery. Should these methods be applied to other threatened fisheries under similar ecological and athropolgicial stresses, they may experience a similar recovery.

PRESENTED BY
PURM - Penn Undergraduate Research Mentoring Program
College of Arts & Sciences 2023
Advised By
Dr. Jane E. Dmochowski
PRESENTED BY
PURM - Penn Undergraduate Research Mentoring Program
College of Arts & Sciences 2023
Advised By
Dr. Jane E. Dmochowski

Comments