| Karim Ehsanul,Liu Qun,Xue Ying,Hasan Shanur Jahedul,Hoq M Enamul,Mahmud Yahia. 2019. Trophic structure and energy flow of the resettled maritime area of the Bay of Bengal, Bangladesh through ECOPATH. Acta Oceanologica Sinica, 38(10):27－42 |
| Trophic structure and energy flow of the resettled maritime area of the Bay of Bengal, Bangladesh through ECOPATH |
| 基于Ecopath模型的孟加拉国孟加拉湾海域营养结构和能量流动分析 |
| Received:September 06, 2018 |
| DOI：10.1007/s13131-019-1423-5 |
| Key words:Ecopath with Ecosim|Bay of Bengal|ecological groups|maritime ecosystem|mass balance |
| 中文关键词: Ecopath with Ecosim|孟加拉湾|生态类群|海洋生态系统|营养通道模型 |
| 基金项目:The Fundamental Research Funds for the Central Universities of China under contract No. 201562030. |
| Author Name | Affiliation | E-mail | | Karim Ehsanul | College of Fisheries, Ocean University of China, Qingdao 266003, China
Bangladesh Fisheries Research Institute (BFRI), Mymensingh-2201, Bangladesh | | | Liu Qun | College of Fisheries, Ocean University of China, Qingdao 266003, China | qunliu@ouc.edu.cn | | Xue Ying | College of Fisheries, Ocean University of China, Qingdao 266003, China | | | Hasan Shanur Jahedul | Bangladesh Fisheries Research Institute (BFRI), Mymensingh-2201, Bangladesh | | | Hoq M Enamul | Bangladesh Fisheries Research Institute (BFRI), Mymensingh-2201, Bangladesh | | | Mahmud Yahia | Bangladesh Fisheries Research Institute (BFRI), Mymensingh-2201, Bangladesh | |
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| Abstract: |
| The existing study was taken to represent the current information in order to develop a mass-balanced ecosystem model within the resettled maritime boundary area of the Bay of Bengal (BoB), Bangladesh from July 2016 to June 2017 through ECOPATH approach covering over 90 000 km2. A total of 19 functional groups were considered representing all trophic levels in the foodweb where estimated trophic interactions between the groups were varied from 1 (primary producers and detritus) to 3.45 (sharks). The ecotrophic efficiency (EE) of most of the consumers was greater than 0.80; symbolizing a largely exploited ecosystem and high energy transfer from lower to higher trophic levels. Moreover, the gross efficiency (0.001 8) and transfer efficiency (11.12%) of the whole system symbolizes the "Developing Systems" with somewhat maturity currently. Ecosystem's overhead (64.6) and ascendancy (35.4) also designate the ecosystem's stability. Thus, this study determines that the resettled maritime area of BoB reserves significant backup strength to face stress situations having capacity to rapid restoration to the original states. |
| 中文摘要: |
| 依据现有研究提供的信息，在孟加拉国孟加拉湾（BoB）新划定的超过90 000 km2的海域基于Ecopath方法利用2016年7月至2017年6月的数据构建了该生态系统的营养通道模型。对食物网中营养级从1（主要生产者和碎屑）到3.45（鲨鱼）的各功能群之间的营养相互作用进行评估，所研究的共19个功能群被认为代表了其中所有的营养级。大多数消费者的生态营养转换效率（EE）超过0.80；表明这是一个被高度利用的生态系统，并且从低营养级到高营养级有较高的能量转换效率。此外，整个生态系统的净效率（0.0018）和能量转换效率（11.12%）标志着当前这一"正在发展中的生态系统"已趋向成熟。生态系统的冗余度（64.6）和聚合度（35.4）也表明了这一生态系统的稳定性。因此，本研究认为这一海域具有显著的后备力量面对压力情况并有能力快速恢复到初始状态。 |
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