Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1400
6
1
gregorian
2021
9
1
20
5
online
1
fulltext
en
Research Article: Study of environmental and three kilka species regime shifts in the Caspian Sea
Stock assessment
Stock assessment
پژوهشي
Orginal research papers
One of the major sources of impacts on marine resources comes from climate variability and regime shifts. In this context, the present study pinpoints the role of climatic and environmental parameters on the dynamic of kilka in the Caspian Sea. During the last decades, landings and stocks of the main pelagic species of kilka had been changed dramatically in the Caspian Sea. This study focuses on the last three decades of the climate regime and tries to explain the part of the changes in the recruitment (R) and spawning stock biomass (SSB) of three kilka species. Based on the statistical analysis of data series, it is found that regime changes in the global and regional environmental variables started in the mid-1995s, however, the shift of the late 1990s (1998) was more strong in the Caspian Sea. The study further reveals that the global climatic indices changes in the late 1990s are triggering the regional and local indices induced regime shifts in the late 1990s and 2000s. The study concludes that the changes in populations of fish species, especially for kilka, could be due to the regime shift.
Climate changes, Shelf waters, Caspian Sea, Kilka stocks, Regime shift
1247
1261
http://jifro.ir/browse.php?a_code=A-10-120-8&slc_lang=en&sid=1
H.
Fazli
hn_fazli@yahoo.com
100319475328460041291
100319475328460041291
Yes
Iranian Fisheries Science Research Institute
A.A.
Janbaz
aliasgharjanbaz@yahoo.com
100319475328460041292
100319475328460041292
No
Iranian Fisheries Science Research Institute
M.
Rabbaniha
rab.mahnaz@gmail.com
100319475328460041293
100319475328460041293
No
Iranian Fisheries Science Research Institute
K.
Khedmati
k_khadmati@yahoo.com
100319475328460041294
100319475328460041294
No
Iranian Fisheries Science Research Institute
H.S.
Chaudhari
hemantkumarc@gmail.com
100319475328460041295
100319475328460041295
No
Indian Institute of Tropical Meteorology