Resultados de la búsqueda
-
Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
this paper. Results of comparisons of swarm parameters by area and season are given. The effect of ... comparisons of swarm parameters by area and season are given. The effect of spatial distribution patterns of ... in order to detect potential fi shing grounds where the precautionary catch limit recommended by ... in Subarea 48.4 was carried out from 17 January to 1 February 2000 by the Russian research vessel ... in papers by Hewitt et al. (2002), Trathan et al. (2001) and SC-CAMLR (2000). Maps of survey ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Autor(es): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky
-
Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies
rate. 1977-78 and 1983-84 were summers of particularly poor reproductive performance by almost all ... particularly poor reproductive performance by almost all species; circumstantial evidence relating this to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Autor(es): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery
-
Seabird mortality in the Patagonian toothfish longline fishery around Crozet and Kerguelen Islands, 2001–2003
petrels and grey petrels is explained by the time of year, geographical area and type of longliner (manual ... petrels and grey petrels is explained by the time of year, geographical area and type of longliner ... Kerguelen Islands fi shing vessels. Seabirds are attracted by the baited hooks during the setting of the ... line sinks. The high mortality rates of albatrosses induced by the longliners coupled with the ... offal) in an attempt to reduce the incidental by-catch of sea- birds. In spite of these measures and ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 53–80 : Autor(es): Delord, K., N. Gasco, H. Weimerskirch, C. Barbraud and T. Micol
-
Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set
Scotia Sea water by a zone of varied width (10 to 100 km) of water which can best be considered as ... Confluence region the Weddell Gyre water is separated from the Pacific or Scotia Sea water by a zone of ... surface current in the western boundary of the Gyre, of 8 cm/sec as measured by drifting ships and buoys ... western boundary current, pressed up against the continental slope, has been modified by convective ... ice edge along this front is investigated with the shuttle imaging radar-B (SIR-B) by Carsey et al ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 161-184 : Autor(es): Gordon, A.L.
-
Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile
rather than on the fish caught on the line, as suggested by the response of sperm whales to the presence ... of killer whales (grouping into tight parallel formations). High sperm whale densities were found to ... preferring to predate on sperm whales rather than on the fi sh caught on the line, as suggested by the ... quotas and is limited only by vessel size (maximum 18 m) and longline length (maximum 12 000 hooks per ... percentage of the total allocated catch as determined by public auction. Measures used by fi shers to ... attention paid by the observers to marine mammal interactions, as the study also included the assessment ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Autor(es): Hucke-Gaete, R., C.A. Moreno and J. Arata
-
Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias
population obtained by adjusting a one-off count using availability adjustment factors will not account for ... the breeding population obtained by adjusting a one-off count using availability adjustment factors ... adjusted by some date- or stage-specific factor if the count is to form the basis of an estimate of some ... vegetation, for example, may not be available for counting by an observer passing overhead in an aircraft ... , and marine species diving underwater may not be available for counting by an observer in a passing ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Autor(es): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery
-
A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
and spring. Depending on the exact location of spawning, eggs and larvae become entrained by the Ross ... model transport anomalies were explored by Rickard et al. (2007), but were found to be insignificant ... spawning, eggs and larvae become entrained by the Ross Sea gyres, and may move west, settling out around ... recently reviewed and summarised by Hanchet (2006). Despite a reasonable understanding of the fishery ... stage) for D. mawsoni have been col- lected by scientific observers since the Ross Sea toothfish ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 35–53 : Autor(es): Hanchet, S.M., G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams
-
Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)
very low productivity. Estimates of average biomass were made by comparison of standardised catch rates ... Prydz Bay, and appears to be of very low productivity. Estimates of average biomass were made by ... critical that spatial variations in catch rate are accommodated. This is generally dealt with by spa ... for each stratification as density multi- plied by area size. In the analysis presented here, a ... pre-processed by New Zealand scientists to eliminate errors in the dataset. Although only ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Autor(es): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán
-
Assessing the power to detect systematic change in Adélie penguin foraging trip duration
greater in the crèche stage than the guard stage. The gain obtained by increasing the number of penguins ... . Power to detect change was greater in the crèche stage than the guard stage. The gain obtained by ... included years, mating pair membership, gender, penguins and trips. Foraging trips by Adélie penguins at ... Béchervaise Island are characterised by many short trips, inter- spersed with a variable number of longer ... of data on the logarithmic scale has been recommended by the CEMP Subgroup on Statistics (SC-CAMLR ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 201–215 : Autor(es): Southwell, C., J. Clarke and L.M. Emmerson
-
An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
by illegal activity. Both the new and the current method suffer from the fact that the observation ... potentially better handle the evasion of detection by illegal activity. Both the new and the current method ... , by-catch and incidental mor- tality which can be attributed to illegal fi shing. Illegal fi shing is ... this paper, the only type of observation con- sidered here is that reported by a fi shery patrol ... , which occurs for a given set of observations for an area can be given by: est i i F P D= ∑ (2 ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Autor(es): Ball, I