Результаты поиска
-
Antarctic ecosystem management
in accordance with the objectives and requirements of Article II of the Convention for the ... . With regard to interim management action, it is recommended that (a) management areas should be ... be employed to monitor these stocks. In particular, early attempts should be made to model fishing ...
Meeting Document : WG-DCH-84/03 : Автор(ы): D.S. Butterworth (South Africa)
-
Improving mechanistic understanding between larval krill, krill recruitment, and sea ice
paper is to provide the Working Group with a summary of our recent efforts published last year to ... . Earlier analysis suggested decrease in krill abundance by 50% since the mid 1970’s to early 2000’s in the ... trajectory as well as its link with decadal climatic events. Krill population dynamics is thought to be ...
Meeting Document : WG-EMM-18/07 : Автор(ы): B. Meyer and S. Kawaguchi
-
The food and feeding of five species of icefish in the Elephant Island – South Shetland Islands Region in March 2003
– South Shetland Islands region in March-early April 2003. C. gunnari took primarily krill. C. aceratus ... fed on krill and fish with some differences found between Elephant Island and the South Shetland ...
Meeting Document : WG-FSA-03/60 : Автор(ы): K.-H. Kock, H. Flores (Germany), C.D. Jones (USA), S. Wilhelms and S. Schöling (Germany)
-
A preliminary assessment of age and growth of eel cod (Muraenolepis sp.) and violet cod (Antimora rostrata) in the Ross Sea, Antarctica
., 42.8 cm TL; K, 0.408 y-1; t0,-0.1 years. Violet cod are relatively long-lived, with a maximum estimated ... depth range, so probably comprise a single species. They are relatively short-lived, with a maximum ... estimated age of 9.5 years. Von Bertalanffy parameters derived from female and unsexed fish only are: L ... age of 41.5 years. Von Bertalanffy parameters derived from female and unsexed fish only are: L., 78.4 ...
Meeting Document : WG-FSA-10/19 : Автор(ы): P.L. Horn and C.P. Sutton (New Zealand)
-
Integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)
consistent and did not show an early period with stronger inter-annual fluctuation. Based on this assessment ... eleginoides) at the Heard and the McDonald Islands (Division 58.5.2) with data until the start of August 2013 ... . Across scenarios with YCS estimation, estimates of virgin spawning biomass (B 0) ranged from 89 448- 101 ... indicating that a separation of the trawl sub-fisheries is appropriate. The scenario with estimating a YCS ...
Meeting Document : WG-FSA-13/24 : Автор(ы): P. Ziegler, S. Candy and D. Welsford (Australia)
-
Preliminary studies on age, growth and size at sexual maturity of Dissostichus eleginoides in the Ob-Lena Bank in the 2007/08 season
comments. The estimated ages ranged from 5 to 48 years for males and from 4 to 48 years for females. Ten to ... fifteen years gave large contribution to the total age groups for both sexes. Females grew at a faster ... rate and reached a larger size than males. The individuals with 80 cm total length, which are generally ... , respectively, assuming animals with maturity stage > I. However, the results in reading for 40 reference ...
Meeting Document : WG-FSA-11/16 : Автор(ы): K. Taki, T. Iwami and M. Kiyota (Japan)
-
Criteria for aging the otoliths of Dissostichus eleginoides from South Georgia (Subarea 48.3) and an analysis of aging precision
fish, but C2 indicated that captured fish may be mostly young, between 3-9 years old. The low precision ...
Meeting Document : WG-FSA-98/52 : Автор(ы): J. Ashford (United Kingdom) and S. Wischniowski (Canada)
-
Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
conservative estimates of the regional biomass in recent years. This suggests that the trigger level would be ... subarea, derived from the subarea catch limit, appears to exceed this level in up to 20% of years due to ... <3% because annual catches have been <50% of the regional trigger level since 1991. The subarea ... (or “trigger level”), established in 1991, is 0.62 million tonnes year-1, equivalent to ~1% of the ...
Meeting Document : WG-EMM-16/21 : Автор(ы): S. Hill, A. Atkinson, C. Darby, S. Fielding, B. Krafft, O.R. Godø, G. Skaret, P. Trathan and J. Watkins
-
Learning about Antarctic krill from the fishery
design associated with scientific surveys that have been obstacles for us to better understand krill ... early 1970s. Recent studies revealed its potential to be used as a unique source for scientific ...
Meeting Document : WG-EMM-07/P5 : Автор(ы): S. Kawaguchi and S. Nicol (Australia)
-
Learning about Antarctic krill from the fishery
design associated with scientific surveys that have been obstacles for us to better understand krill ... early 1970s. Recent studies revealed its potential to be used as a unique source for scientific ...
Meeting Document : WG-EMM-06/24 : Автор(ы): S. Kawaguchi and S. Nicol (Australia)
Страницы
- « первая
- ‹ предыдущая
- …
- 104
- 105
- 106
- 107
- 108
- 109
- 110
- 111
- 112
- …
- следующая ›
- последняя »