CM_1968_H25.pdf (429.3Kb)

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R.G t_--e ASYUYLtS_ ZYM =2 aillatZIOC

wabans in Au

11&0 t* - ."3 fourt*_ Gf a sari :,o c :'-' ovx-,re-,,-s :L--- t-a waters to 3tuz:y

of 0-i:rcu--, fio :-I of t : .e Z .ain

Co :', red iszi, Bait. a ' cod .

'23,e vessels tal:ir,;~; cart the scientists la.:: ci-_aroa

vessel were as follows : '

"I?ritjof Naiisenll

/V "JOI .,am-¹ n .jort"

Yu . 1: . 33~%~',:O 1_3 .Soliverstov

L .11.,idttun ~tad J .ior.c o

of eam-

l- pre-1 1-ir-ary pjar was held ^it :3erZo -_-.^L on 2/-20 June, ti-en all .ti-a vooools ._ :et in hurnianok on 23-24 Au6-uot for a final discuunim of the pro,3rarmn3 in the li~! . ,_t of ti%e results of E. -,Vo-

lii-A,iary r, -, :rvey that had been Lmde I,r "kkadez. :Ak ILnipovic_" 5-15- a

Y~uC_;Lzot . T*--.-a survey proper coin.,:.o .nced, on 21 Luguot and endec:- or_

30ptc : -.-Z~r . 2 . Im tiods

kL; i :.-. ;revicuo years the of :31a-

" :Lc scattjriLi, wzre esti ; . .atod froi__

aL-- d u .--re by direct ' .:y AC-:haterl , .-s in sor .e o2 o1iips usz:d i_atz,,;ratic :a toc"I.-Y-Aquoo to o *z, tP_i ri . a qua;:it i -bat iv!,; osti, :. ate . cf 't,:+3 cazttaria; : layer . _AL .:. iia-clue-%cy ec__o-r,Gundero (103-120 were also uso(7 to cr' ..:'u'ai ::, ".>etter disci i- ninatim-_

the area covered y the survey class MIUC :I th3 sat---.e as is p-rovicius

;rears . T--.o ohipst' rachs arC-i the distribution, of a:,LydrcgrapiAc and trawl stations are s hown. in F it; . 1

3. J^{`.oSuo is}

3 .1 . a

Ti,e full ydrc rc .'~~__iC Gate^i arc i_ it ~r <ot .. er ut ^

av^.. .: een prepared of -L---e te : Jcr2 t Sre C :ic .._'i .:utioro i n C_e t :-s of 5C,100 and 200 :, :'cers (Fi _{s .2,3,}1'

3 .2 . _'ie ; .:

1'io . J a, . :a04rS t_te 'ir«ric.tlv :2 i : total CLC.uityr vl ^{t_ 2} 3C~ltt : r i_

is CJ :_l ..po .iec. Of a variety i aii_ : .~ GYi lC Or a :aSK . . well as 0- r0't? fib .-, . ^_b'C~ c, density was ddeterr.ine by ei:a : .:] :1atiO :'_

o f t --,-,.e paper echo-sounder record and expressed i :i ten: . :-s of a

scaly 0-fir . In some areas scatter ii-ig layers :.r siioaals of fis- .- clear t1ian C-group were recordled . 1llesults from tuba integrcati .,G ,:-quipl::ent are of yet analysed .

T,e general distr i :iutioii of 0--fir^Cup fish was closely related to the water teiipcrat - .'re . Y,-. aj'crit -`.^r of species were dictr7.a". : .1-

ted in ti a Tlar ::i^.r water 4-,L t:,e ^C n'tral part of ta -iarents ~+ea and e ::te nding up along t1 ---e west coast ^of`* Spitsbergen . :, olar was recorded in t -,,o colder water In -eye eastern part Cf voy area, but also west of 3pitsbergeiz .

0-group were again very scarce this yeas'

al :,:ost e tire) ~ . . ^:f'i over ^the w _ole area . They were ^{CVs ::.} less

aJT _:'.F.~a tl_a lace, :rear . T , is is the fourth successive ;'ear ⁱⁱⁱ

L :__ic__ ei ;r IO :J of nerx'in 4 .. :au 'oeea reCOract : in t_: .o joint .s-arrays.

3 . ~

C-"_'OUy~ ccC. ;rat. D distri :)uted a.ve ;.' c:_., i :: . t . ..-

part olthe . . ar .. is '..)'ca Tlit . . a snail i o at•e ~,atc .-. wes' .,~

Ti_e leugt ::_ car. _i :: . is :,her;-- 3. ::- :ML, .

Unco again_ a undance of cod recorded was low wnic c ._jgests t__c.t t,_8 1~Cu ;rear-class will 1;3 a:=0t_'_er :r0u .= Oae, J~G was t1-01 case last year there was again a virtual absence of cod o :_ t'__e 3valbarc s :bielf ..

3 .2 .3 .

^.ti t .. : .ese species were o---u-id to be of very low aJ :~ c ante . i _ 'norai distri ~,utio of : acicioci : war, siralar to previous years (Fig

. 0, , but a ain tae indications are tihat the 1 Jig ;'ear-Class is a poor one .

3aitine also were found only rarely and no shoals w : io :: Qould L'e identified as sai the were located, The low abundance Cf sait__e

2

cod

Ll_e sur-

-, --ar can '. .e contrasted wit : the -,AcIospreadi distribution

and abundance of previous year w:-..,en a considerable -zx.i .-iber of dense shoals were identified .

TLis year redfish ;sere distributed over a :::ore restricted area tan in _1967, '--- ei-lz lizAtocl to az_ area off t_'_-_, nort .-.er::i coast of Norway with isolated ipatcki3ss to the west Of 'Dear Island &:.dvest Spits_,Dergon . T'his species was also spar ~-A- a .,^Dly lower in than in previous years . he average size of rocfioli was also lower than in previous years (lanC-t ;-,,. rangy s

15-4!~

3 .2 .5 .

Il"I CQ-_-_-Lr&0t to 1- . Cst ot".--er fia",-_ species 0-,3rou2 Cal--Ii::-,L a

- ,I*:--t a ;.-_d dlstr :Lbuted over t'_-~a ~ arenits Sea 10,

a tone ali.iost to No vaya coi_-.c :LCinL; with the eastward of the warr. ;er water . Capelin were also found in an circa over t,:-o west 3- '2-c. indicatiom r,

t .:-at ;-car-clays Is a .2 .6 9 Lona

Ca -,-, ^w-jro distributed in nuuberc over t'--.e : ;Iost Cf area (Fio- 1 1 ;~ . This year ^their di_-t :vj_ -butiGr. extended tip to crest coast of Spits_L_-r j]:c :7j. . The general i .r.-pression is t- .-at this

Siecioo was z.mc .i .. less 2 . Polar ecd

This sl:>Ocias Was again fo ,_;uid in t : ...o water at t--.a eastern 12) :rite a second area of diztriouti(, -. ..

to t :-.Le .Jest of The of t -Iiis species appeared to t;i ; :-,i_Iar to last year .

3 .2 .0 . G :.-a-ei-iland I-alibut

11-^e)_-, ibut were recorded this -.- ear so :.., timer, in.

quite large oi-_, the west coast of Spitsuer ;ei:. . is is t__e first year that C-re=lamd hali' :;ut _-.as bee-r- recorded in the joint cur vcyc . T,.•ic

lematn

fiSl- of several other species were recorded ti_ ;.- Survey . 30tticao,jf,aywoCL02:zur, and

-,jaiis

abundant than ini previous years .

3 .2 .10 . Adult a_di:venil e pela(;ic, ic=

Adult blue w.:itin were,ac last year, recorded ovc- a L7icic area

along t=13 eacte ::n boundary of the 1TOrwe t;ia_'. sea, frcI :: Spits- beirgen to the llorrre&iaiz coast outside the shelf . T7- --,e conclusion last year, that ti--e ctocl_: size i ;lust be quite considoraole, was

confiri_:od this year1

Adult polar cod_ :-iac oserved L-!ith ap_~'r~i5ai :_&tel ;,r the same ai l ;C~a__Ce in tie SE-Me area as last year, ~_ari ±y from east of

u' 1 :~2--a` v--`1 -:.OpG' I3Ia:1C1, over t~ .8 -nor-t' ..eiitral ::ai : to iTOVaya Le :ilya .

r^. ^

i Lv . . . .'JrY 1= .~ ;'.a- o servcr~ CcUr1i2 ; t'.--e surveys T . . . . a : .

Ua tua-c YJ-~r o at- the ti::-0 o f t 7_-^Q a eisV- COi.Cc ._- tr 'i Jitliii_•

t__e area ;^r .. :_ . '/2 c iT an-6 o - 10 0 ._' .

.adult capeli ._ 41ei ..z to . :c,V-3 ~--

n , evicus Years . 2__e -reateri were ioL_1C~ Z_i t -o

part 01' elect-Spitsher-e^ . T 7--- e conce ztrations co : sic tec i- :aiiily of I-group fici'' , out older a ;ge-t,rcup3 ( lainly Ii-bi'Oup j :Jere al o recorded . I-grout ca,-elin was also distributed in t-e central and south-eastern parts of the _ a ::~e_its

area around +zeal' a i hc`JC Islc__C- i L__e co Waster .-!

Sea .

Fig . 1 . Survey routes and grid of stations .

Fig . 2 . Isotherma at 4 m .

Fig .3 . . Isotherms at 50r m .

Fig . 4 . Isotherms at 100 m .

Fi,a . 5 . Iwethermw At 200 m .

Fig . 6 . Courses and echo recordings .

4 44 ° 4a

4444 444 44444444 4 4 4 4 44 4444 4 444 4 44*44 44 4 4

4444 4 4< 44444 44 44 44 4 0744444444

4 44 a

.4444474 4 444.4 a4° 4a4°4444 447404 4 ~44444m444 a4e

a743444•3 4 44 44Iqj

rn4o

Pa OI-₄₀P4

Fig . 11 . Distribution of 0-group long rough dab .

7s &r

Fig . 12 . Distribution og 0-group polar cod .

.~S

A A

A A

A A A A A A

A

AA A AA . A

A

a

A ° A A A

A

OAA

0 A

A A A AA A

A A A ~1 A A

A A A

A A A A ° A

yen 0

AA A

A

o-oROUP MOLAR COD A .CLAOIC TRAWL

BOLT I TRAWL

A A AS

A A

A

A A

A A A A

8

A A A A

A

8

A A A

Tr

10 30 50 70 g0 M M LENGTH COMPOSITION

Fig . 1 3 . Length composition .

t

COD

-

'

s x

N=21

'

POLAR COD N=810

Al ^l

I I

,

l

,~ REDFISH N=145

c

I

'

GREENLAND HALIBUT

N= 227

' '

'

CAPELIN

N=1332