Результаты поиска
-
Increasing abundance of Type A killer whales (Orcinus orca) in the coastal waters around the Antarctic Peninsula
and we need to understand the impact on marine ecosystems. A diverse community of killer whales ... (Orcinus orca; Types B1, B2 and A) are important top predators around the AP, but there are currently no ... Antarctica. In contrast, less is known about the Type A killer whales that are more typical in appearance to ... killer whales sighted in other parts of the world. Sightings of Type A around the AP have been ...
Meeting Document : WG-EMM-17/49 : Автор(ы): H. Fearnbach, J.W. Durban, D.K. Ellifrit and R.L. Pitman
-
Proposal for a SCOR Working Group to identify Ecosystem Essential Ocean Variables for measuring change in the biological properties of marine ecosystems
Abstract: A proposal for a SCOR “Working Group to identify Ecosystem Essential Ocean Variables ... Group is to develop a set of essential variables for monitoring that would contribute to assessments of ... whole-of-ecosystem status and change. The intention of the SCOR Working Group is to provide a mechanism ... for linking a number of groups working on this issue, leading to a symposium in 2016. The proposal is ...
Meeting Document : WG-EMM-12/45 : Автор(ы): A. Constable (Australia)
-
A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2013 random stratified trawl survey
vicinity of Heard Island during April 2013. This paper provides a preliminary assessment of mackerel ... using standard CCAMLR methods. A large cohort of fish, estimated to be 3+, dominates the population in ... both abundance and biomass. Two scenarios for harvest are presented – a typical two year projection of ... the population, and a projection accounting for the fact that the abundant 3+ year class is likely to ...
Meeting Document : WG-FSA-13/23 : Автор(ы): D.C. Welsford (Australia)
-
A false positive in the CCAMLR tag overlap statistic arising from low catch volume and consequent limited sample size
2013/14 the vessel Argos Georgia achieved a tag overlap statistic of 52% rather than the required ... minimum of 60% as specified in CM 41-01. A review of the data indicates that the number of fish tagged was ... of fish tagged did not match closely with that of the catch resulting in a the overlap statistic, as ... not a case of only small fish being tagged. The low tag overlap statistic is shown to be a sampling ...
Meeting Document : WG-FSA-14/31 : Автор(ы): C. Darby (United Kingdom)
-
Are we there yet? Evaluating and reporting progress towards a Representative System of Marine Protected Area across the CAMLR Convention Area
Abstract: In 2008, CCAMLR agreed that the establishment of a representative system of marine ... protected areas (RSMPA) by 2012 was a priority. This assessment shows that the Scientific Committee and ... Commission can be kept informed of progress towards this goal using a relatively short list of simple ... contributions towards a RSMPA, however we are not there yet. Establishment of the proposed MPAs in Domain 1 ...
Meeting Document : WS-SM-18/14 : Автор(ы): D.C. Welsford
-
Are we there yet? Evaluating and reporting progress towards a Representative System of Marine Protected Area across the CAMLR Convention Area
Abstract: In 2009, CCAMLR agreed that the establishment of a representative system of marine ... protected areas (RSMPA) by 2012 was a priority. This assessment shows that the Scientific Committee and ... Commission can be kept informed of progress towards this goal using a relatively short list of simple ... contributions towards a RSMPA, however we are not there yet. Establishment of the proposed MPAs in Domain 1 ...
Meeting Document : WG-EMM-18/31 : Автор(ы): D.C. Welsford
-
Spatial overlap of krill-dependent predators and krill fishery catches and a proposal for subdivision of catch limits in Subarea 48.1
Abstract: Progressing from Stage 1 to Stage 2 of a feedback management strategy requires a better ... appeared to be more stationary and did not respond as rapidly (or on as large a scale) to conditions that ... might affect the distribution of fishing effort. A comparison of CEMP parameters from two years with ... from a single SSMU. We propose that 85,000 tonnes, based on observed overlap and likely impacts of such ...
Meeting Document : WG-EMM-14/36 : Автор(ы): J.T. Hinke, M.E. Goebel (USA), M.M. Santos (Argentina), P.N. Trathan (UK), W.Z. Trivelpiece and G.M. Watters (USA)
-
Preliminary assessment of mackerel icefish, Champsocephalus gunnari, in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in May–June 2006 using the Generalised Yield Model
Abstract: A survey of mackerel icefish, Champsocephalus gunnari, was undertaken in Division ... short-term annual yield in the 2006/2007 CCAMLR season. This paper provides a preliminary assessment of ... yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. A lack of ... evidence of strong year classes recruiting to the population has led to a significant decrease in the ...
Meeting Document : WG-FSA-06/43 Rev. 1 : Автор(ы): D.C. Welsford (Australia)
-
A proposal for large scale sampling of krill in the diet of predators across Area 48 to coincide with the CCAMLR synoptic survey
Abstract: There is a high degree of spatial and temporal variability in the population of ... variability requires a 'snapshot' of the krill population over the region (eg the CCAMLR B0 survey ... South Georgia krill in the diet of Antarctic fur seal Arctocephalus gazella show a good level of ... and March using a standard methodology. This data will he used to example the level of concordance ...
Meeting Document : WG-EMM-99/33 : Автор(ы): K. Reid (United Kingdom)
-
A comparison of densities and length distribution of the Champsocephalus gunnari stock in Subarea 48.3 between years 1994 and 1995
determined by a search procedure yielding randomly selected clusters of stations located within the 50–150 ... ; 151–250 and 251–500 m depth strata. The cluster structure is considered as a nested factor in an ANOVA ... in a nested ANOVA and a paired t-test. Significant increases in density have been detected at all ... a probability function to mean densities should be improved, but their differences at replicated ...
Meeting Document : WG-FSA-95/34 : Автор(ы): Marschoff, E., Calcagno, J., Gonzalez, B.
Страницы
- « первая
- ‹ предыдущая
- …
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- …
- следующая ›
- последняя »