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Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles
with penguins looking up and around for a few seconds when the UAV was overhead. Similar symptoms of ... or piston engine UAVs. Plans for a systematic monitoring of UAV impact on wildlife, as well as ... preliminary guidelines for the next field season, were formulated. File: Kidawa et al.pdf ... disturbance by UAVs Resting Comfort Vigilance/anxiety Aggression 100 90 80 70 60 50 40 30 20 ... 40 km, max. flight time 30 minutes, flight speed 70–80 km/h, fuel – Li-Pol battery (electric engine ... passing through the group, were cho- sen. Therefore the same penguins were not always analysed for each ... . The best option is a 20–30 minute recording with the overflight around its midpoint. • Noise ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Autor(es): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój
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Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system
/ Description: An exchange system was established among Members of CCAMLR to compare age determinations for the ... agreement in age determination was highest for scales of juvenile N. rossii and for otoliths of juvenile C ... . gunnari from South Georgia and lowest for scales of adult N. rossii and N. gibberifrons and otoliths of P ... established among Members of CCAMLR to compare age determinations for the same species among different ... prepare them, scales are commonly used in most laboratories for routine age determination. Scales ... (Gerasimchook in SC-CAMLR-VII/8G/41). Sagittal otoliths were proved to be suitable for estimating age. Two ... different techniques are used for age determination. 200 (i) Otoliths are examined in glycerine via ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Autor(es): Kock, K.-H.
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 kHz and 120 kHz
Receiving Sensitivity (SL + VRS) for both sounders was measured to within an estimated ± 0.5 dB by ... for an error of 0.5 dB in the estimation of SL + VRS, and for the same error in the equivalent beam ... factor and in the TVG correction, gives an upper limit of only 1.5 dB for error in each system and a ... kHz being raised by 12.5 dB, an increase of 17.7 fold, amply demonstrating the importance of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 75–86 : Autor(es): Hampton, I.
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A balanced model of the food web of the Ross Sea, Antarctica
base. A survey of the available literature and both published and unpublished data provided an initial ... effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). The model consolidates quantitative ... information on trophic links across all the major biota of the Ross Sea and tests for data consistency. The ... model has 38 trophic groups and is balanced in terms of annual flows of organic carbon in an average ... the base. A survey of the available literature and both published and unpublished data provided an ... . The model is an important step towards understand- ing the potential effects of the fishery for ... -linear and an iterative approach to search for this solution by simultaneously adjust- ing all ... equality constraints were satisfied with an error within com- putational accuracy (8 iterations for within ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Autor(es): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... and 53 o-57 o 30´W) for proportional recruit and density indices. Proportional recruitment indices ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... an analysis of variance. File: 02siegel-etal.pdf ... the study area after 13 days, but was then trapped in an eddy system for another 30 days before ... representative for the age class. However, examples from the time series show that years of poor to almost ... 1977/78 to 1994/95 (Siegel and Loeb, 1995). The proportion of recruits for age group l + (R,) was ... density is assessed by randomisation tests in an analysis of variance (Manly, 1991). REVIEW OF KRILL ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Autor(es): Siegel, V., W. de la Mare and V. Loeb
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Midwater trawl catchability in relation to krill and possible ways of assessing gross catch
methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... midwater trawls in the krill fishery indicates that the potential exists for this efficiency to be ... Rhomboid a=lOO (30) mm a=80(20)mm a=60 (18) mm 0.2 0.2 0.2 Hexagonal a=lOO (20) mm a=80 (14) mm a=60 ... assessing gross catch by integrating the methods mentioned above. Yu.V. Zimarev was responsible for ... 70 60 50 40 ~ 30 I» o ~ 20 g. f 10 \-l o 0,9 10,7 20,5 30,3 40,1 ~9.9 59,7 3 ... WG-KRILL-90/22 MIDWATER TRAWL CATCHABILITY IN RELATION ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Autor(es): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov
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A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
Control (MPC) to achieve objectives for a harvested species, its predators and the fishery, in a ... also useful for assessing the feasibility of candidate management policies or objectives, and ... should occur in concert with the development of a state estimator mentioned above. An imme- diate ... to higher levels of uncertainty. MPE is an appropriate framework for select- ing an HCR by ... process can be controlled through weight- ing. The area‐specific catches for the first year in the ... CCAMLR aims to develop a feedback manage- ment approach for the Antarctic krill fishery in the Scotia ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Autor(es): Hill, S.L. and M. Cannon
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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 ... available nesting habitat in 1987. For the same reason, at least in part, other species of breeding seabirds ... were also found to be more abundant than previously reported. (* Published in: NOAA Technical ... Memorandum NMFS Antarctic Marine Living Resources Program (AMLR)) File: 20-Shuford-and-Spear.pdf ... -30 years, about three-fourths of the difference between our counts and previous ones is due to more ... 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 : Autor(es): Shuford, W.D. and L.B. Spear
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Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag Rocks (Subarea 48.3)
experimental pot fishing in 2000 and 2001, and have been at liberty from one to two years. Four fish were ... at 42°S after about one year at liberty from some opportunistic tagging carried out on a toothfish ... an approximate spring balance measurement that does not provide useful data for growth comparisons ... estimates of growth to be validated. In this analysis, three growth curves are used to predict an age at ... and one deepwater haul (500 m) that caught larger toothfi sh (60–80 cm) for tagging. During the fi ... , were caught and tagged in October 2001 northeast and southwest of Shag Rocks. An additional 80 fi sh ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 101–111 : Autor(es): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean.
. mawsoni on BANZARE Bank is similar to that hypothesised for the Ross Sea population with analogous ... 10 20 30 40 50 60 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 80 90 100 110 120 ... longline set and mean CPUE for Dissostichus eleginoides (black) and D. mawsoni (red). 0 10 20 30 ... eleginoides D issostichus m aw soni 0 20 40 60 80 100 120 40 60 80 100 120 140 160 180 0 10 20 30 40 ... recorded for up to 30 individuals. Gonad stages were usually recorded using the CCAMLR five-point staging ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 145–153 : Autor(es): Taki, K., M. Kiyota, T. Ichii and T. Iwami