Macrobenthic Community and Benthic Health Assessment of Central Area in Asan Bay

Kim, Kwang-Bae; Jung, Yoon-Jin; Oh, Jeong-Kyu; Kang, Hoon; Son, Dae-Sun; Ma, Chae‐Woo

doi:10.13000/jfmse.2021.8.33.4.903

Cited by 3 publications

(3 citation statements)

References 34 publications

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“…In summer, the influx of large volumes of eutrophic freshwater constitutes a significant environmental pressure for Cheonsu Bay. Existing research has demonstrated that the influx of substantial amounts of eutrophic freshwater adversely affects the ecological conditions of the subtidal zone in the bay [26,28]. In this study, the average density of Heteromastus filiformis is 25.7 ind./m 2 in summer, which decreases to 7.4 ind./m 2 in autumn.…”

Section: Discussionmentioning

confidence: 59%

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Assessing the Benthic Ecological Quality in the Intertidal Zone of Cheonsu Bay, Korea, Using Multiple Biotic Indices

Liang,

Ma,

Kim

et al. 2024

Water

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With the growing global focus on marine environmental conservation and management, it is imperative to evaluate the ecological quality of marine ecosystems accurately. In this study, we employed seven biotic indices, namely the AZTI marine biotic index (AMBI), BENTIX, benthic opportunistic polychaetes amphipods index (BOPA), benthic pollution index (BPI), multivariate AZTI marine biotic index (M-AMBI), abundance biomass comparison (W-value), and Shannon diversity index (H’), to assess the benthic ecological quality in the intertidal zone of Cheonsu Bay, South Korea. Except for the H’ and W-value, the indices (AMBI, BENTIX, BOPA, BPI, and M-AMBI) suggest that the ecological quality at most stations in the intertidal zone of Cheonsu Bay was acceptable. Furthermore, the influx of a large amount of eutrophic freshwater has impacted the intertidal zone of Cheonsu Bay, but the applicability of the seven biotic indices requires further investigation.

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Section: Discussionmentioning

confidence: 59%

“…Conversely, tidal current velocities markedly decrease in the northern part, registering at approximately 0.5 m/s [27]. Furthermore, the influx of a substantial amount of eutrophic freshwater from artificial lakes in the north part of the bay has further led to the accumulation of organic matter in the bay [28].…”

Section: Study Areamentioning

confidence: 99%

Assessing the Benthic Ecological Quality in the Intertidal Zone of Cheonsu Bay, Korea, Using Multiple Biotic Indices

Liang,

Ma,

Kim

et al. 2024

Water

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“…The use of benthic indices to assess the ecological quality of coastal areas in South Korea has been widely implemented. However, most of these studies have focused on the West and South Seas of South Korea [28][29][30][31]. Only a few studies have assessed the ecological quality of the southern East Sea in South Korea [32,33].…”

Section: Introductionmentioning

confidence: 99%

Using the Heavy Metal and Biotic Indices to Assess Ecological Quality in the Central Area of the East Sea, South Korea

Liang,

Ma,

Son

2024

Water

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With the rapid development of the South Korean economy, human activities have extensively affected Korea’s coastal environment. A precise ecological quality assessment remains paramount despite the relatively lower impact of human activities on the East Sea compared to the West and South Seas of South Korea. Accurate ecological quality assessments can provide valuable marine environmental protection and management references. In our study, we employed seven indices based on heavy metals and macrobenthos to comprehensively assess ecological quality. Our results indicated the final ecological quality in the central East Sea of South Korea was acceptable at most stations; however, the ecological quality in winter marginally falls short compared to that in spring. The concentration of heavy metals emerges as a significant determinant of the final ecological quality, underscoring the need for subsequent studies to investigate the origins of heavy metals in the central East Sea of South Korea and the influence of anthropogenic activities on heavy metal concentrations. Furthermore, employing a single biotic index proves challenging for accurately assessing ecological quality in the East Sea of South Korea.

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Ecological risk assessment of heavy metals in surface sediments and their impact on macrobenthos in Asan Bay, South Korea

Liang,

Ma,

Kim

2024

Front. Mar. Sci.

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Bay ecosystems with unique economic and ecological value are more vulnerable to heavy metal pollution than other marine ecosystems. In South Korea, rapid economic development has exacerbated heavy metal pollution in bay environments. This study analyzed concentrations of seven heavy metals and the structure of macrobenthic community in Asan Bay. Five heavy metal indices (PLI, Pn, RI, TRI, and MERMQ) were used to assess ecological risk. Additionally, spearman correlation, biota–environment matching (BIO-ENV), and redundancy analysis (RDA) were utilized to determine the influence of heavy metals on macrobenthic communities. Although average concentrations of seven heavy metals were below sediment quality guidelines (SQGs), the average concentration of Cd was close to the threshold effects level (TEL). The nemerow pollution index (Pn) and the potential ecological risk index (RI) indicated that Cd was the primary heavy metal contributing to ecological risk. Spearman correlation, BIO-ENV, and RDA indicated that heavy metals were the main environmental factors influencing macrobenthic communities in Asan Bay. However, five heavy metal indices (PLI, Pn, RI, TRI, and MERMQ) did not show a response to the macrobenthic communities. Overall, low concentrations of heavy metals have a certain negative impact on macrobenthic communities in Asan Bay. This study can serve as an important reference for marine environmental protection and policy-making in Asan Bay.

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Macrobenthic Community and Benthic Health Assessment of Central Area in Asan Bay

Cited by 3 publications

References 34 publications

Assessing the Benthic Ecological Quality in the Intertidal Zone of Cheonsu Bay, Korea, Using Multiple Biotic Indices

Assessing the Benthic Ecological Quality in the Intertidal Zone of Cheonsu Bay, Korea, Using Multiple Biotic Indices

Using the Heavy Metal and Biotic Indices to Assess Ecological Quality in the Central Area of the East Sea, South Korea

Ecological risk assessment of heavy metals in surface sediments and their impact on macrobenthos in Asan Bay, South Korea

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