So What?

2021 ◽  
pp. 651-662
Author(s):  
Jason S. Link ◽  
Anthony R. Marshak

This book has had eight regional chapters, one international chapter, and a synthesis chapter which all contain copious material for U.S. marine fisheries ecosystems. But what does it all mean? The overarching theme of this book is that although much work remains, much progress has occurred. This chapter provides a short synopsis of several major “so-whats” to elucidate the major lessons we have learned and the major issues still facing us regarding progress toward ecosystem-based fisheries management (EBFM). We attempt this synopsis by posing a series of questions, questions which are routinely presented to us, and then attempt to address them. We pose the question of what happens if we don’t do EBFM, and briefly explore some considerations that question raises. We conclude by asking where we will be in 10 years with respect to EBFM? Ten years ago the debate shifted from “what and why” of EBFM to “how” we actually do EBFM. Ten years from now we hope that the EBFM debate will have shifted into “how well have we been doing.”

2015 ◽  
Vol 538 ◽  
pp. 257-272 ◽  
Author(s):  
C Longo ◽  
S Hornborg ◽  
V Bartolino ◽  
MT Tomczak ◽  
L Ciannelli ◽  
...  

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Massimiliano Drago ◽  
Marco Signaroli ◽  
Meica Valdivia ◽  
Enrique M. González ◽  
Asunción Borrell ◽  
...  

AbstractUnderstanding the trophic niches of marine apex predators is necessary to understand interactions between species and to achieve sustainable, ecosystem-based fisheries management. Here, we review the stable carbon and nitrogen isotope ratios for biting marine mammals inhabiting the Atlantic Ocean to test the hypothesis that the relative position of each species within the isospace is rather invariant and that common and predictable patterns of resource partitioning exists because of constrains imposed by body size and skull morphology. Furthermore, we analyze in detail two species-rich communities to test the hypotheses that marine mammals are gape limited and that trophic position increases with gape size. The isotopic niches of species were highly consistent across regions and the topology of the community within the isospace was well conserved across the Atlantic Ocean. Furthermore, pinnipeds exhibited a much lower diversity of isotopic niches than odontocetes. Results also revealed body size as a poor predictor of the isotopic niche, a modest role of skull morphology in determining it, no evidence of gape limitation and little overlap in the isotopic niche of sympatric species. The overall evidence suggests limited trophic flexibility for most species and low ecological redundancy, which should be considered for ecosystem-based fisheries management.


2018 ◽  
Vol 10 (11) ◽  
pp. 4302 ◽  
Author(s):  
Qi Chen ◽  
Weiteng Shen ◽  
Bing Yu

China’s marine fisheries are undergoing large-scale environmental changes associated with climate change, marine pollution, and overfishing. The assessment of marine fisheries vulnerability has become extremely necessary for fisheries management and sustainable development. However, studies on China’s marine fisheries vulnerability remains sparse. This study aimed to provide an analysis of the inter-provincial level vulnerability of China’s marine fisheries under multiple disturbances. The vulnerability measure was composed of exposure, sensitivity, and adaptive capacity indicators specific to marine fisheries based on the Intergovernmental Panel on Climate Change (IPCC) definitions. Results showed that Liaoning, Hebei, Fujian, and Hainan provinces appeared to be the most vulnerable; Shanghai appeared to be less vulnerable among China’s 11 coastal provinces; and the key sources of vulnerability differed considerably among coastal regions. The high vulnerability regions could be divided into two different patterns according to the combination of exposure, sensitivity, and adaptive capacity, but they all had one thing in common: relatively low adaptive capacity. While some existing coercive measures to reduce dependence on fisheries were found to be helpful in China, the reality showed that appropriate adaptation measures such as improving fishermen’s education level and increasing vocational training may be helpful in enhancing the existing policy effectiveness.


2019 ◽  
Vol 209 ◽  
pp. 117-128 ◽  
Author(s):  
John G. Pope ◽  
Troels Jacob Hegland ◽  
Marta Ballesteros ◽  
Kåre Nolde Nielsen ◽  
Mika Rahikainen

2010 ◽  
Vol 107 (21) ◽  
pp. 9485-9489 ◽  
Author(s):  
S. Zhou ◽  
A. D. M. Smith ◽  
A. E. Punt ◽  
A. J. Richardson ◽  
M. Gibbs ◽  
...  

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