Introduction 2 Benchmarks, targets and fisheries ownership 2 Tradeoffs between economic and conservation benefits 3 Harvesting profits vs. fisheries employment 3 B MEY and the Western and Central Pacific tuna fisheries 4 Including harvesting and processing/retail sectors in B MEY 6 Incorporating harvesting profit and processing margins 6 Incorporating consumer surplus 8 Conclusions 9 Abstract T...

Results on interpretation of the variability of regional background PM levels in the Western Mediterranean basin (WMB) are presented. Mean PM levels recorded at Montseny, MSY (North-Eastern Spain) in the 2002--2007 period reached 17, 13 and 11 microg/m3 of PM10, PM2.5 and PM1, respectively. The daily evolution of PM levels is regulated by the breeze circulation (mountain and sea breezes). PM le...

The objective of U.S. fisheries management, as mandated by National Standard 1 of the Sustainable Fisheries Act of 1996, is to maintain fish stocks at levels sufficient to produce maximum sustainable yields (MSY). Mandated levels of fishing may be less than MSY but are not to exceed these levels. MSY, of course, has been a highly elusive goal (Larkin 1977). Operationally, National Standard 1 ha...

Penelitian ini ingin mengetahui tingkat potensi lestari terhadap jumlah (MSY), upaya penangkapan dan pemanfaatan ikan cakalang (Katsuwonus pelamis) di PPN Sibolga tahun 2017 sampai dengan 2021. Metode yang digunakan model Schaefer atau Fox. Hasil tangkapan per menunjukan fluktuasi penurunan CPUE tiap bulan nya 0,0282 ton /trip. Hubungan antara effort menghasilkan persamaan linier y= -0,0174 x +...

The northern tuna stocks in the Pacific have specific characteristics: long-term large variability of the total biomass, sparse stock-recruitment relationship, and no obvious indication of recruitment overfishing even though the spawning stock biomass sometime fell into in a very low level. In contrast, southern stocks in the Pacific have one way decreasing trends in shorter exploitation histor...

The relationships between fecundity and size of Atlantic herring (Clupea harengus) were estimated within five different spawning areas off the coast Nova Scotia in 2019 2020. Statistically significant differences relative to body weight observed among years. Fecundity-at-length on German Bank ground was 29%–36% 22%–28% lower than estimates from 2001 1970, respectively. Temporal changes weight- ...