Between-year comparison of interactions between environmental parameters and various plankton stocks in the northern Bering Sea during the summers of 2017 and 2018
Between-year comparison of interactions between environmental parameters and various plankton stocks in the northern Bering Sea during the summers of 2017 and 2018
复制标题
2017年和2018年夏季白令海北部环境参数与各种浮游生物种群相互作用的年际比较
DOI:
10.1016/j.polar.2020.100555
复制
发表时间:
2021
期刊:
影响因子:
1.8
通讯作者:
Hirawake Toru
中科院分区:
文献类型:
--
作者:
Yamaguchi Atsushi;Kimura Fumihiko;Fukai Yuri;Abe Yoshiyuki;Matsuno Kohei;Ooki Atsushi;Hirawake Toru
In the northern Bering Sea, ice coverage and retreat timing were low and early, respectively, in the 2017–2018 winter. To evaluate the effect of these anomalous ice conditions, we quantified various environmental parameters (temperature, salinity, mixed-layer depth, nutrients) and the standing stocks of various planktonic taxa (phytoplankton counts, meso- and macrozooplankton mass, jellyfish abundance) during July of 2017 and 2018. For each year, the interaction between each parameter was evaluated by structural equation modelling (SEM) analysis. Large yearly differences were detected for the interactions between environmental parameters and planktonic stocks. Thus, for 2017, a total of fifteen interactions were present between environmental parameters and various planktonic stocks. In 2018, however, only eight interactions were present. Among the interactions, four were common to the two years. It is notable that the path coefficients of these four interactions were all lower in 2018 than in 2017. These findings suggest that the small magnitude and short pulse of the phytoplankton bloom in 2018 may have failed to transfer production and energy to a higher trophic level even within the planktonic food web. Indeed, in 2018, mass mortality was reported for seabirds (two murre species) feeding on planktivorous fishes.
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DOI:
--
发表时间:
2014
期刊:
影响因子:
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作者:
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通讯作者:
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DOI:
10.2307/1521664
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