Deciphering the diversity and distribution of chromophytic phytoplankton in the Bohai Sea and the Yellow Sea via RuBisCO genes (rbcL). (November 2022)

• Record Type: Journal Article
• Authors: Pujari, Laxman; Kan, Jinjun; Xin, Yehong; Zhang, Guicheng; Noman, Md Abu; Nilajkar, Sujata; Sun, Jun
• Is Part Of: Marine pollution bulletin. Volume 184(2022)
• Publication Date: 2022-11
• Subjects: Bohai Sea -- Yellow Sea -- Harmful algal blooms (HABs) -- rbcL gene -- Chromophytic phytoplankton -- High throughput sequencing; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2022.114193
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: Present study investigated composition and distribution of chromophytic phytoplankton in the Bohai Sea (BS) and the Yellow Sea (YS) by using rbc L genes. Bacillariophyceae, Haptophyceae and Pelagophyceae were the most abundant phytoplankton groups. Distinct phytoplankton communities were observed in the BS and the YS: offshore stations were dominated by bloom forming genera Thalassiosira and Skeletonema, while brown tide-forming species including Chrysochromulina spp. and Aureococcus anophagefferens were commonly found in the nearshore areas. Redundancy analysis showed that phosphate, temperature and silicic acid play key roles in structuring chromophytic phytoplankton, such as phytoplankton at nearshore stations were affected by nutrient runoff from adjacent rivers (Yellow River). Anthropogenic activities in the Bohai Sea and seasonal circulation of ocean currents may also contribute to shaping chromophytic phytoplankton communities. This study provides data support and foundational observations of chromophytic phytoplankton in the BS and the YS, and their responses to environmental gradients and human activities. Highlights: Based on rbc L genes, Bacillariophyceae, Haptophyceae and Pelagophyceae were the most abundant phytoplankton groups in the Bohai Sea (BS) and the Yellow Sea. Distinct spatial distribution of chromophytic phytoplankton were found in the BS and YS. Brown tide-forming species Chrysochromulina spp. and Aureococcus anophagefferens were commonly found in near-shore stations Offshores were dominated by Thalassiosira and Skeletonema Composition and distribution of chromophytic phytoplankton were influenced by riverine runoff, dissolved nutrients and human activities.