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LAWS1977オキアミ余剰≠ミンク鯨増/表

投稿者: aplzsia 投稿日時: 2010/04/25 08:16 投稿番号: [43619 / 62227]
TABLE 1. CRUDE ESTIMATES OF ANT ARCTIC SEAL POPULATIONS, BIOMASS AND FOOD
CONSUMPTION
_____________________mean___population_______annual food consumption (10^3 t)
____________stock_____weight___biomass____________________________________
species____(thousands)___kg______10^3 t_______total____krill____squid____fish
elephant_____600_______500______300________6000____ - _____4500*___1500*
leopard______220_______272_______60________1403____519_____112____182
Weddell______730_______246______180________4211____ - ______463____2232
crabeater___14858_______193_____2868_______67245___63210__1345____2017
Ross________220________173______38_________892______80____571____196
fur__________200________50_______15_________351_____117____117_____117
total_______16828________ - _____3456_______80102____63926__7108____6244
* See text for basis of estimate.

この表の生息数推定は古い数字なので、新しい南極生態系の一般向け書物、
Biology of the Southern Ocean、 By G. A. Knox(2007年)を見ると、
同じロウズ編1984年2巻本’Antarctic Ecology’の数値が引用されています。

elephant   ミナミゾウアザラシ   600   =>   750
leopard   ヒョウアザラシ   220   =>   220-140
Weddell   ウェッデルアザラシ   730   =>   800
crabeater カニクイアザラシ   14858   =>   30000
Ross   ロスアザラシ   220   =>   220
fur   オットセイ   200   =>    930

=====
43606で日本語訳貼った表2の原著オリジナル
TABLE 2. CRUDE ESTIMATES OF LARGE WHALE POPULATIONS, BIOMASS AND FOOD CONSUMPTION
IN THE ANTARCTIC AND OF THEIR BIOMASS LOSS OUTSIDE THE ANTARCTIC


______________________mean _________________________biomass loss outside Antarctic (10^3 t)
______________mean__antarctic__food consumption in Antarctic___________________% of mean
__________stock_weight__biomass_____ (10^3 t)___________________________________Antarctic
species_(thousands)___t___10^3 t____krill__squid__fish_____metabolic_mortality_total____biomass
==================== initial stocks ================ =
baleen whales
fin_________400___50___20000___81480___840__1680_____8000___530___8530
blue________200___88___17600__71702___740__1478_____7040___580___7620
sei__________75*__18.5___1387___5651____58___116______555____67____622
humpback___100___27____2700__11000___113___227_____1080___124___1204
minke______200____7____1400___19827___204___409_______ - _____ -____ - ___
total_______ 975___ - ___43087___189660__1955__3910____16675__1301__17976__41.7
sperm whale__85**__30____2550________ - __10200___500____510___102____612__24.0

================ Present stocks ================== =
baleen whales
fin__________84___48____4032___16426___169__339_____1612__109___1721
blue________10___83_____830____3381____35___70______332___27____359
sei_________40.5*_17.5___709____2888____30___60______284___33___317
humpback____3__26.5_____79_____322_____3____7_______32____4____37
minke______200____7____1400___19827___204__409_______ - ____ - ____ - ___
total_______337.5__ - ____7050___42844___441__885_____2260__173___2434___34.5
sperm whale__43**__27___1161_____ - ___4632__244______232___31____263____23.0

* Half total sei whale stock assumed to feed south of the Antarctic Convergence.
**One third total 'exploitable male' sperm whales assumed to feed in the Antarctic.
+ Minke whale assumed to feed year round in Antarctic waters at 4% body mass/day.
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