Résultats de la recherche
-
Australian research on Antarctic bird and seal diets
Fish (%wt) 28 32 5 20 24 32 25 Am ph ipods(%wt) 4 1 0.1 0.5 46 0 0 Chicks hatched in reference ... (length range, mean ±SD millimetres): E. superba E. crystallorophias 20 -5 7 21-34 40.63±7.85 27 ... ) 20 38 3' 1 58 400 39 29 32 o Location: Sea ice off Davis Station (68°30'S: 77°50'E ... 72 and 183 mm, mean 129.5±23.8 mm. Location: Amanda Bay (69°19'S: 76°46'E). Time: 14 August, 15 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Auteur(s): Williams, R.
-
Foraging behaviour and reproductive success in chinstrap penguins: the effects of transmitter attachment
, South Shetland Islands. In total, one member of each pair at 20 nests and both members of each pair at ... 666 nests on Seal Island, South Shetland Islands. In total, one member of each pair at 20 nests and ... membre par couple dans 20 nids, et sur les deux membres des couples de 10 nids; 120 nids ont constitue ... npHKpenJIeHbI K O,llHOMY H3 '-IJIeHOB Ka)l{,llOH napbI B 20 rHe3,llaX H 060HM '-IJIeHaM Ka)l{,llOH napbI B 10 ... 20 000 pairs of chins trap penguins nest on Seal Island, South Shetland Islands, Antarctica (600 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 291–303 : Auteur(s): Croll, D.A., J.L. Bengtson, P.L. Boveng, M.E. Goebel and J.K. Jansen
-
Consideration of major issues in ecosystem monitoring and management
rates can 223 Ecosystem monitoring and management 0 20 40 60 80 100 0 2 4 6 8 10 Age at ... 10000 15000 0 10 20 30 40 50 60 70 80 90 100 Year Po pu la tio n si ze Recruitment fails twice ... first breeding Su rv iv or sh ip (% ) 0.5 Chicks 1.0 Chicks 1.5 Chicks 2.0 Chicks 0 20 40 60 ... Recruitment normal Figure 4: The effect of breeding failure and population size. During the fi rst 20 years ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Auteur(s): Everson, I
-
Surveys of breeding penguins and other seabirds in the South Shetland Islands, Antarctica, January-February 1987*
to have been about 40% overall increase in the chinstrap population in the last 20-30 years, about ... Memorandum NMFS Antarctic Marine Living Resources Program (AMLR)) File: 20-Shuford-and-Spear.pdf ... . Although there appears to have been about 40% overall increase in the chinstrap population in the last 20 ... a jugula ire ait augmente globalement d'a peu pres 40% au cours des dernieres 20-30 annees ... 20-30 anos, aproximadamente tres cuartas partes de la diferencia entre nuestros recuentos y los ... rro rrpeAblAYlI\l1M OlleHKaM. XOTH, KaK Ka)KeTCH, 3a rrOCJIeAHl1e 20-30 JIeT o611\ee KOJII1QeCTBO ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 449-451 : Auteur(s): Shuford, W.D. and L.B. Spear
-
Revised estimates of seabed areas within the 500 m isobath of the South Orkney Islands (subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish
250-500 m depth intervals. The updated estimates are about 1 424 (20%) n miles larger in area within ... examined, the point estimate of total biomass increased from 5 to 30% for eight species and decreased by 20 ... ) for the 50-150, 150-250 and 250-500 m depth intervals. The updated estimates are about 1 424 (20%) n ... eight species and decreased by 20% for one. Une carte bathymetrique revisee des iles Orcades du Sud ... 424 (20%) milles naut. celles dlEverson entre les isobathes de 50 et de 500 m bien que les ... especes et diminuk de 20% pour la neuvieme. Eb1JTa COCTaBneHa HOBalr ~ ~ T H M ~ T ~ H ~ ~ C K ~ X ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 197–204 : Auteur(s): C.D. Jones
-
An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island
-- 60 -- 40 -- 20 0 1 Figure 4: Proportions of fish mature at each length from several spawning ... 5001 5001 1 0 20 0.2 Trial 4 2 6 5 360 0.3-0.64 2 5 .O 1E-05 All year 0.57 ... from 60 to 129 mm. The median length in the catch for each gear type is given in Table 8. All of the ... variability is that the probability of the population falling to below 20% of median spawning stock biomass ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 79–101 : Auteur(s): de la Mare, W.K., R. Williams and A.J. Constable
-
Choosing distance between acoustic survey tacks
· 23:3 6~9 36.0 35.7 ~7.5 32;5 · .. · 28,3 21;0 13;4 15.6 .. 20.9 20:2 116.! · , 4~ I 37.3 4 '20.0 ... %, while the error of the hydroacoustic method applied to the survey conditions 0H~20% (Kalikhman, 1982 ... error 8= vr302_202~20%=0.2. Assuming k=l, we use expression (3) to find a typical size 1= ~=100 miles ... the actual biomass assessment error 0.35=35% This criterion for choosing distance between tacks ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 153-164 : Auteur(s): Kalikhman, I.L., Z.I. Kizner, B.R. Zaripov and W.D. Tesler
-
Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia
required by the conservation measure (6 kg at 20 m intervals) was derived from a study of bird strikes in ... petrel T = Treatment Set No. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2 1 22 23 ... 19 2 42 28 23 19 27 40 15 3 8 at End of Setting DIM PRO 40 60 53 63 49 88 54 82 60 75 ... 5 3 92 56 95 65 89 61 60 54 73 65 57 54 49 45 25 32 75 27 61 Agnew et al. Table 2 ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Auteur(s): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes
-
The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters
Penguins in weekday 35 35014.61 1000.42 22.65 0.0 Krill (within group) 2199 97122.39 44.17 Components of ... :=" ....... _ ..... --. -_ ........ _._ ............ -.:. .... ;.; ....... -.... -......... -;.. . .. -.... -... _ .............. ~ .... _._ ", ................... " .................... _ ••••••• 'H' . ... ~ ....... -.-........ -.... ~.- .... - 20 1 ... -.. "'" .' .'"."."." " ....... "--.... '" .. " .. " ............ " . --. " .. ""." .......... " ... "." ..... " .... -.. " .. --." .. --............... ' ... " ---......... " ............. " ..... -.. " .. ,,' ...... . .._ ...... o IL-______________ L-______________ ~ ______________ J-______________ ~ o 10 20 30 40 dec 13 ... . The regression analysis demonstrates a positive trend in mean sizes of krill with time (Table 4 and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Auteur(s): Marschoff, E. and B. González
-
Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993
., 1991). Biomass estimates range from 267 x 10 3 tonnes (March/April 1985) to 4 880 x 10 3 tonnes ... o3 tonnes) 1 187 482 391 2 208 268 992 72 1 1 428 699 1 701 3 206 3 720 1 036 1 235 ... . Fisch Wiss., 37: 51-72. Siegel, V. 1989. Winter and spring distribution and status of the krill stock ... in Antarctic Peninsula waters. Arch. Fisch Wiss., 39: 45-72. Trathan, P.N., D.J. Agnew, D.G.M ... /April 1985) to 4 880 X 103 tonnes (January 1993) and biomass densities range from 2.5 g/m2 to 134.5 g ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Auteur(s): Hewitt, R.P. and D.A. Demer