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Age-0 ish in Upe na ik and Uummannaq
egions in Augus -Sep embe 2020
Ca oline Boucha d
Technical Repo no. 120
G eenland Ins i u e o Na u al Resou ces
17 Decembe 2021
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Ti le: Age-0 ish in Upe na ik and Uummannaq egions in Augus -
Sep embe 2020
Au ho : Ca oline Boucha d
Publishe : G eenland Ins i u e o Na u al Resou ces
Da e o publica ion: 2021
Financial suppo : G eenland Ins i u e o Na u al Resou ces
Co e pho o: A ju enile sho ho n sculpin (Myoxocephalus sco pius), a la al
capelin (Mallo us illosus) and a la al Ame ican plaice
(Hippoglossoides pla essoides) collec ed du ing he su ey.
Copy igh : Ca oline Boucha d
ISSN: 1397-3657
ISBN: 978-87-972977-3-5
EAN: 9788797297735
Web: h p://www.na u .gl/publika ione / ekniske appo e
Ci a ion: Boucha d C (2021) Age-0 ish in Upe na ik and Uummannaq
egions in Augus -Sep embe 2020. Technical epo no. 120,
G eenland Ins i u e o Na u al Resou ces, G eenland. ISBN 978-
87-972977-3-5, 15 pp.
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English Summa y
An ich hyoplank on su ey was conduc ed onboa d R/V Sanna be ween 19 Augus and 8
Sep embe 2020 in he Upe na ik and Uummannaq egions in coas al Wes G eenland. The
objec i e o he p esen epo is o documen he abundance and di e si y o la al and ju enile
ish in he egion in he la e summe o 2020. The age-0 ish collec ed belong o se en species,
p edominan ly capelin (Mallo us illosus). No pola cod (Bo eogadus saida) we e collec ed
du ing he su ey, sugges ing he ex emely wa m sea su ace empe a u es obse ed in he
s udy a ea in 2020 esul ed in massi e mo ali y among he eggs and la ae, leading o a
comple e ec ui men ailu e.
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G eenlandic Summa y – Kalaallisu Naalisa neqa ne a
R/V Sanna ilaa igalugu Upe na iup Uummannallu eqqaanni sine issap qani uani plan on-inik
aalisagaa anngo ussanik misissuisoqa poq ulluni 19. augus – 8. sep embe 2020-imi.
Nalunaa usio ne ullu uuma siune a aa akussu issamik uppe na saase niassallugu 2020-imi
aasap naaja o ne ani qanoq aalisagassanngo ussanik qullugiaaqqanik aalisagaagaaqqanillu
sumii inni aakkunani peqa igisimane soq. Aalisagaagaaqqa suli ukioqanngi su
assigiinngi su a ineq-ma luuppu , ame lane paajullu illi ammassaa (Mallo us illosus).
Eqalukkanik (Bo eogadus saida) ka e sa ilaqanngilla ama umunngalu pa sisaa inneqa poq
2020-imi aamaasine ani immap qaa a kissa o ujussuusimamma suaaqqa qullugiaaqqallu
eqaluganngo ussa oqo a ujussua simane a , aamaalilluni pisa ineqa ussanngo ussaagalui
pi issami assanngaanee suusu annaaneqa simallu ik.
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Danish Summa y - Dansk O e sig
Ombo d på R/V Sanna ble de mellem d. 19. augus og d. 8. sep embe 2020 ud ø en
unde søgelse a iskeplank on i de kys næ e om åde i Upe na ik- og Uummannaq- egione ne
i Ves g ønland. Fo måle med denne appo e a dokumen e e, h ilke iskea e de i
sensomme en 2020 o ekom som la e - og ung isk, og h o mange de a a dem, i egionen.
De indsamlede isk, de e mind e end e å gamle, ilhø e sy a e , men e o e ejende lodde
(Mallo us illosus). De ble ikke unde pola o sk (Bo eogadus saida). De yde på, a de
eks em høje empe a u e , de ble mål i o e lade ande , med ø e massi død a æg og
la e , så de ikke e komme nye pola o sk ind i bes anden i 2020.
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Table o Con en s
English Summa y ....................................................................................................................... 3
Danish Summa y - Dansk O e sig ........................................................................................... 5
Lis o Tables ............................................................................................................................. 7
Lis o Figu es ............................................................................................................................ 8
1. In oduc ion ............................................................................................................................ 9
2. Ma e ials and Me hods ......................................................................................................... 10
2.1. Field sampling ............................................................................................................... 10
2.2. Da a analysis ................................................................................................................. 10
3. Resul s .................................................................................................................................. 12
4. Discussion ............................................................................................................................ 14
5. Re e ences ............................................................................................................................ 15
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Lis o Tables
Table 1. Summa y o ich hyoplank on caugh in he egions o Upe na ik and Uummannaq in
Wes G eenland in Augus -Sep embe 2020. SL: s anda d leng h. SD: s anda d de ia ion .... 12
Table 2. Densi ies o age-0 ish in Upe na ik (UPV) and Uummannaq (UMK) egions ....... 13
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Lis o Figu es
Figu e 1. Map o he s udy a ea wi h s a ion loca ion. Upe na ik egion: s a ions UPV1-7,
Uummannaq egion: s a ions UMK1-12. S a s: owns ............................................................ 11
Figu e 2. Leng h equency dis ibu ion o la al capelin in Uummannaq egion. n=52 ....... 13
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1. In oduc ion
Coas al wa e s o Wes G eenland a e apidly wa ming, a ec ing ish popula ion dynamics.
Many ma ine ish species ha e pelagic la ae cha ac e ized by a na ow ange o he mal
ole ance, and a e he e o e highly sensi i e o inc eases in sea su ace empe a u es. A ecen
s udy sugges ed pa ial ec ui men ailu es o pola cod (Bo eogadus saida) in he egions o
Uummannaq and Disko Bay in wa m yea s, ollowing he mal s ess and massi e mo ali y
among he eggs and la ae (Boucha d e al. 2020). In 2018-2019, a p edominance o capelin
(Mallo us illosus) was obse ed in Upe na ik whe eas he ich hyoplank on o Uummannaq
was domina ed by pola cod (Boucha d e al. 2020). The main objec i e o he p esen epo
is o documen he la e summe ich hyoplank on assemblages in Upe na ik and Uummannaq
egions in 2020. The objec i e o es ing he glacial mel wa e summe e uge hypo hesis
exposed in Boucha d e al. (2020) could no be es ed as no pola cod la ae we e ound.
