Resultados de la búsqueda

1. e-sc-xxxv-a05.pdf

   ... . A simulated population with parameters estimated from these data was projected 20 years into the ... present, there is no routine report to users of how the database has been changed from one year to ... 486_2–4. Research block 486_1 was fished in one year only and catches were dominated by D. eleginoides ... . Poor ice conditions meant that research block 486_5 was accessible in only one year in four. The application/pdf attached to:WG-SAM-16

   Meeting Report : WG-SAM-16

2. An index of per capita recruitment

   assumptions that: (i) post-recruit mortality does not vary over age or between years; (ii) 100% of age-l ... years, and when all age-l animals spawn. These conclusions are insensitive to changes in the shape of ... underestimate recruits per spawner by 30% if reasonable assumptions are made regarding the variability of ... spawners and recruits. PCR was also able to track cycles in recruits per spawner after a 20% random ... appearing as a large mode at 20 to 30 mm length and in subsequent years as progressively longer length ... . Antarctic krill, however, appear to spend one to two years in the juvenile and sub- adult stages and may ... with one year of mortality removed: In addition to compounding the results of two PCRy_l ... nocne ~ 0 6 a ~ n e ~ H ~ K H C ~ O ~ ~ ~ O B ~ B U I ~ M ~ C X Rnsr pacveTa s ~ a v e ~ ~ m R1 20 ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Autor(es): Hewitt, R

3. Indices of prey availability near the Seal Island CEMP site: 1990 to 1996

   prey density, depth, distance from Seal Island, and persistence over time. Acoustic data from two AMLR ... surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ... relative biomass of juvenile krill near Seal Island during the first survey of each year as compared to the ... biomass of post-spawning adults near Seal Island during the second survey of each year. It is hoped that ... Seal Island, and persistence over time. Acoustic data from two AMLR surveys each year were subsampled ... (Figures 3 and 4). Two surveys were selected for each year, details of which are listed in Table 1. For ... MATERIALS AND METHODS One of the long-range goals of the CCAMLR Ecosystem Monitoring Program (CEMP) is to ... and 1993) or hull-mounted at 5 m depth (1994 to 1996), were passed to a Indices of Prey ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Autor(es): Hewitt, R.P., G. Watters and D.A. Demer

4. Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area

   comprised two year classes arising from spawning in the 1999/2000 and 2000/01 split-years. The mean width of ... 2001/02 year class lasted four months. This was estimated based on a retrospective count of daily ... increments. TL varied from 5.5 to 10.4 cm for fish in their first year (120–250 days) to 12.5–13.3 cm in 1 ... -year-old fish (477–533 days). The radius of the first annulus ranged from 0.7 to 1.3 mm. The ... the 1999/2000 (5 speci- mens) and 2000/01 (20 specimens) split-years. The 1999/2000 year class ... survey of juveniles in February–March 2002 on the South Georgia shelf. Juvenile fi sh comprised two year ... used for age–growth analyses. One otolith of each pair was immersed in an alcohol–water solution ... which the year is de- fi ned as the period from 1 July to 30 June of the next year (Shcherbich, 1975 ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Autor(es): Shcherbich, L.V

5. e-cc-xxv.pdf

   ... numbers over the past 20 to 30 years and that winter sea-ice conditions had opposite effects on these two ... Committee activities ............................................................ 20 Reorganisation of the ... Compliance evaluation procedure......................................................... 30 CATCH ... ............................................... 77 IMPLEMENTATION OF THE OBJECTIVES OF THE CONVENTION ............... 80 ELECTION OF CHAIR AND application/pdf attached to:CCAMLR-XXV

   Meeting Report : CCAMLR-XXV

6. Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric parameter?

   sex of individuals, it is only able to correctly sex a certain proportion of birds. Two overlapping ... functions are able to correctly determine the sex of birds with greater than 80% success the difference ... knowledge about the sex ratio between years makes combining the data a very doubtful procedure and use of a ... discriminant function to determine sex is recommended as being most practically robust. Author(s):  D.J. Agnew ...

   Meeting Document : WG-CEMP-92/11 : Autor(es): D.J. Agnew (Secretariat)

7. Cruise Report – Research Project: Demersal finfish distribution, abundance, and their biological characteristics in Statistical Subareas 48.1 (northern area) and 48.2

   coordinates as those on previous R/V ' Polarstern ' surveys around Elephant Island (Kock & Jones ... the R/V ' Yuzhmorgeologiya ' (Jones & Kock, 2009). The cruise took place 6-27 January ... , 2018, primarily using a Hardbottom Snapper trawl (NET Systems, Inc.), previously used by the US AMLR ... marks registered in the echo sounders. One of the mid-water hauls identified a shoal of icefish (33.6 t ...

   Meeting Document : WG-SAM-18/25 : Autor(es): Delegation of Chile

8. Fishery Report: Dissostichus eleginoides South Georgia (Subarea 48.3)

   extension (26–30 April). One vessel caught two seabirds. The average catch is therefore 0.4 birds per ... (South Georgia) 56 S 52 30' S 33 30' W SGSR stock area 2000m 1000m shagW shag NWgeorgia ... total of three seabirds is caught during the two extension periods in any one season, fishing shall ... April). One vessel caught two birds. The average catch is therefore 0.4 birds per vessel. The ...

   Document : Site Section: Publications

9. Catch and effort data for the longline fishery in Subarea 48.3 – comparison of data reported to CCAMLR and data acquired by the UK between 1994 and 1996

   around South Georgia were compared with data reported to CCAMLR and held in CCAMLR's longline ... to be missing from the CCAMLR database. One instance was identified of multiple hauls being submitted ... the two datasets, with many of the records for individual fields being identical. The number of ... in reporting bycatch and incidental mortality of birds. Author(s):  Parkes, G.B., Pearce, J., Agnew ...

   Meeting Document : WG-FSA-97/37 : Autor(es): Parkes, G.B., Pearce, J., Agnew, D.J.

10. Fishery Report: Exploratory fishery for Dissostichus spp. in Subarea 48.6

    tonnes north of 60°S and 200 tonnes south of 60°S. Carry forward Season 1 December to 30 November ... per vessel during daytime setting. Carry forward Observers At least two (2) scientific observers, one ... using longlines only, and no more than one vessel per country was permitted to fish at any one time ... (Conservation Measure 41-04). The precautionary catch limit for Dissostichus spp. was 200 tonnes north of 60°S ...

    Document : Site Section: Publications

Páginas