Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

Han, Dong-Hoon; Ikeya, Tomohiko; Takahashi, Masayuki

doi:10.1023/b:joce.0000038347.66564.a5

Cited by 3 publications

(3 citation statements)

References 25 publications

(34 reference statements)

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“…The myctophid larvae were divided into a Kuroshio Countercurrent assemblage and a Subtropical Countercurrent-North Equatorial Current assemblage, with a boundary of 23°N during June in the tropical Philippine Sea . The same distribution patterns of latitudinal variation were also found in the phytoplankton (Han et al, 2004) and zooplankton communities (Nagai et al, 2015;Yang et al, 2017). A significant latitudinal variation of phytoplankton and zooplankton is always correlated with main water masses in the subtropical and tropical Western Pacific.…”

Section: Spatial and Temporal Variation Characteristicssupporting

confidence: 67%

Spatial distribution and seasonal variation of fish larvae in the upper 200 m of the Philippine Sea

Chen

Wang²,

Sun³

et al. 2023

Front. Mar. Sci.

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The Philippine Sea, owing to its complicated circulation pattern and the presence of numerous seamounts, is considered to be a hotspot for biodiversity and an important fishing ground. However, to date, few studies on ichthyoplankton in the Philippine Sea have been conducted. During the summer, autumn, and winter of 2020–2021, a series of investigations were conducted to study the spatial and temporal structure of fish larvae in the Philippine Sea. A total of 65 samples were collected by vertical hauling from a depth of 200 m to the surface. A total of 882 fish larvae representing 81 distinct taxa, 49 genera, and 23 families were identified. A seasonal pattern was also observed based on the differences in abundance and dominant taxa. The abundance of fish larvae was 11.35 ± 12.46 ind./100 m3 (mean ± sd.) in summer, 5.83 ± 7.03 ind./100 m3 in autumn, and 2.57 ± 2.73 ind./100 m3 in winter. The dominant species were Vinciguerria nimbaria, Encrasicholina punctifer, and Cyclothone sp. in summer, V. nimbaria, and Ceratoscopelus warmingii in autumn, and Diaphus spp., D. garmani, and Sigmops sp. in winter. A significant latitudinal variation in fish larvae assemblages was found via cluster analysis, and two geographic groups were separated by the northern boundary of the North Equatorial Current. In addition, the fish larvae species diversity also showed a significant latitudinal gradient in autumn, which disappeared in summer. Canonical correspondence analysis indicated that the structure of fish larvae assemblages was affected by average temperature, salinity, and net primary productivity in the upper ocean and sea level anomaly. All dominant species were associated with specific niche environments. This study suggests that latitudinal zonation of fish larvae also occurs in the oligotrophic low latitude Pacific Ocean and is enhanced in autumn. These results provide multi-seasonal baseline data of fish larvae assemblage in the upper Philippine Sea, being an important reference for the planning of marine protected areas in the high seas.

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Section: Spatial and Temporal Variation Characteristicssupporting

confidence: 67%

Spatial distribution and seasonal variation of fish larvae in the upper 200 m of the Philippine Sea

Chen

Wang²,

Sun³

et al. 2023

Front. Mar. Sci.

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“…Berbeda dengan konsentrasi klorofil-a pada stasiun 9 dan 10 tergolong dalam kategori sedang. Konsentrasi klorofil-a rendah bila berada di bawah 0,2 μg/L dan tinggi bila berada di atas 0,5 μg/L (Han & Takahashi, 2000).…”

Section: Perbedaanunclassified

“…Konsentrasi klorofil-a di perairan laut lepas kepala burung Pulau Papua seperti perairan luar Kabupaten Teluk Wondama, Manokwari, dan Biak serta Tambrauw secara berturut-turut dengan ratarata berkisar dari 0,24-0,36 μg/L (Alianto et al, 2016). Hal yang sama dengan konsentrasi klorofil-a di perairan Pasifik Utara (arah utara timur Pasifik Utara) dengan rata-rata berkisar dari 0,17-0,33 µg/L (Han & Takahashi, 2000).…”

Section: Perbedaanunclassified

Akumulasi Biomasa Fitoplankton yang Diukur sebagai Klorofil-a di Perairan Teluk Doreri, Provinsi Papua Barat

Alianto¹,

Kambanussy²,

Sembel³

et al. 2020

J. Kel. Trop.

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The accumulation of phytoplankton biomass measured as chlorophyll-a is highly depends on the availability of ammonia and silicate in the waters. The purpuses of the study were examining the concentration of chlorophyll-a and its relation with ammonia and silicate in the waters of Doreri Bay, Manokwari Regency, West Papua Province. Water sampling is carried out at 10 stations. Parameters measured include chlorophyll-a, ammonia and silicate. The measurement results of chlorophyll-a concentration ranged from 0.23-3.77 μg/L with an meanof 0.82 μg/L. Ammonia and silicate concentrations ranged from 2.35-4.11 μM with an mean of 2.64 μM and 2.00-7.50 μM with an mean of 3.91 μM, respectively. The relationships of chlorophyll-a concentration with ammonia and silicate showed positive and negative relationships, respectively. Akumulasi biomasa fitoplankton yang diukur sebagai klorofil-a sangat tergantung pada ketersediaan amonia dan silikat di perairan. Penelitian bertujuan untuk mengetahui konsentrasi klorofil-a serta hubungannya dengan amonia dan silikat di perairan Teluk Doreri, Kabupaten Manokwari, Provinsi Papua Barat. Pengambilan contoh air dilakukan pada 10 stasiun. Parameter yang diukur meliputi klorofil-a, amonia dan silikat. Hasil pengukuran konsentrasi klorofil-a berkisar dari 0,23-3,77 μg/L dengan rata-rata sebesar 0,82 μg/L. Konsentrasi amonia dan silikat secara berturut-turut berkisar dari 2,35-4,11 μM dengan rata-rata sebesar 2,64 μM dan 2,00-7,50 μM dengan rata-rata sebesar 3,91μM. Hubungan konsentrasi klorofil-a dengan amonia dan silikat secara berturut-turut menunjukkan hubungan positif dan negatif.

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Latitudinal distribution of zooplankton communities in the Western Pacific along 160°E during summer 2014

Sun

Wang

2017

Journal of Marine Systems

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Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

Cited by 3 publications

References 25 publications

Spatial distribution and seasonal variation of fish larvae in the upper 200 m of the Philippine Sea

Spatial distribution and seasonal variation of fish larvae in the upper 200 m of the Philippine Sea

Akumulasi Biomasa Fitoplankton yang Diukur sebagai Klorofil-a di Perairan Teluk Doreri, Provinsi Papua Barat

Latitudinal distribution of zooplankton communities in the Western Pacific along 160°E during summer 2014

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