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| 1 | 华南典型海湾主要渔业生物碳氮稳定同位素研究显示文摘为了解生境差异显著的华南典型海湾主要渔业生物的营养结构特征,于2015年丰水期研究了海陵湾和陵水湾主要渔业生物碳、氮稳定同位素比值(δ13C和δ^(15)N),并计算了基于δ13C-δ15N量化的营养结构。结果表明,海陵湾主要渔业生物的δ13C[(-15.36±0.62)‰]和δ15N[(15.53±0.94)‰]均显著高于陵水湾(P<0.01),但δ13C差值(CR)和δ15N差值(NR)低于陵水湾。陵水湾渔业生物NR和总面积(TA)都高于海陵湾,表明陵水湾比海陵湾食物链更长,多样性水平更高。以3.4‰作为一个营养级的氮稳定同位素富集度来计算,陵水湾渔业生物营养级级距仅为1.37,而海陵湾主要渔业生物营养级级距小于1,说明陵水湾和海陵湾均处于高营养级生物较少且食物网受干扰较多的状态。 | 张文博 黄洪辉 李纯厚 刘永 齐占会 徐姗楠 刘华雪 | 2019 | 南方水产科学2019，15，5： | 9 |
| 2 | 水母旺发对珠江口鱼类资源量的影响显示文摘水母作为胶质浮游动物的一大类群,与其他浮游动物和鱼类有着复杂的食物联系,在海洋食物网中占有相当重要的地位。2015年11月对珠江口环境特征、水母种群组成和鱼类资源进行现场调查,共鉴定出11种水母,其中花水母目和软水母目各有4种,优势种为球形侧腕水母(Pleurobrachia globosa);共鉴定出17种鱼类,其中鲈形目种数最多(10种)。珠江口各站位鱼类资源渔获量呈现自北向南先升高,再降低,然后逐渐升高的趋势,与浮游动物丰度和表层叶绿素a浓度分布有着较大差异。珠江口北部S1站水母类丰度为213个×m^(-3),其中球形侧腕水母占水母类丰度的99%,而该站鱼类资源渔获量仅为7.8g×h^(-1),这很可能与水母类旺发有关。水母丰度与氮磷比正相关,与渔获量负相关,但相关性均不显著,因此水母旺发对珠江口鱼类资源的影响机制仍需进一步研究。 | 刘华雪 许友伟 陈作志 张文博 齐占会 黄洪辉 徐姗楠 | 2016 | 热带海洋学报2016，35，6： | 3 |
| 3 | Flexible feeding patterns of copepod Centropages tenuiremis in fluctuating conditions: a possible survival strategy to cope with disturbance显示文摘Centropages tenuiremis is a species with a wide distribution range in disturbed coastal waters.However,due to a lack of dietary information,it remains unclear as to how they maintain such dominance in fluctuating conditions.In this study,C.tenuiremis was collected from the Daya Bay Nuclear Power Plant both in inlet and outfall regions at 06:00,12:00 and 18:00 on April 27,2011 and their in situ diet was analyzed using a PCR protocol targeting 18S ribosomal genes.Thirty-four species of prey organisms were identified totally,including Dinophyta,Baciliariophyta,Viridiplantae,Rhizaria,Apicomplexa,Chordata,Mollusca,Arthropoda and Fungi,indicating an obvious omnivorous feeding habit of C.tenuiremis.Centropages tenuiremis obviously exhibited spatial and temporal variations in diet composition.More plant prey(land plants and phytoplankton)were consumed in the morning(~50%),while more animal prey(metazoans and protozoans)were ingested at midday and night(60%–70%).Furthermore,a more diverse diet was detected in the outfall region(10–11 taxa),where the temperatures were relatively higher and more fluctuating,than in the control region(5–10 taxa).This finding indicated that C.tenuiremis could potentially expand its food spectrum under stressful condition.Specifically,C.tenuiremis exhibited phytoplankton preference(58.62%–67.64%)in the outfall region with a lower omnivory index(0.27–0.35)than in the control region(0.51–0.95).However,phytoplankton density was lower than that in the control region,suggesting a possible herbivorous tendency of C.tenuiremis under elevated temperatures to balance the energy acquirement and feeding effort.The flexible food choices of C.tenuiremis observed here could effectively buffer environmental fluctuations and might be an important survival strategy in coastal ecosystems. | Cuilian Xu Simin Hu Zhiling Guo Tao Li Hui Huang Leo Lai Chan Sheng Liu | 2020 | Acta Oceanologica Sinica2020，39，2： | 0 |
| 4 | Annual pattern of zooplankton communities and their environmental response in a subtropical maritime channel system in the northern Bay of Bengal, Bangladesh显示文摘Zooplankton plays an important role in aquatic food webs by fluxing of energy from primary producer to subsequent trophic levels in the food chain. The annual pattern of zooplankton communities and potential environmental drivers were studied in the Kohelia channel, Bangladesh from summer 2014 to spring 2015.Samples were collected using net at a depth of 1 m. A total of 32 species belonged to 18 orders, 27 families and 15 taxonomic groups were identified. Of these species, 22 distributed in all four seasons of which 8 were dominant and highly contributing to the total communities. Species number peaked in summer next to winter and fall in spring while maximum abundance was in summer and minimum in spring. Multivariate analyses showed that there was a clear annual pattern in the zooplankton communities. Species diversity and evenness peaked in spring but fall in autumn while the high value of species richness was found in winter. Biological-environmental best matching(BIO-ENV) analyses conformed that community pattern of zooplankton was mainly driven by transparency salinity, and temperature individually or combined with water nutrients. These results demonstrate that annual pattern of the zooplankton community shaped by channel environmental factors in subtropical channel ecosystems, thus might be used for community-based subtropical coastal water bioassessment. | ABDULLAH Al Mamun ALAM Md.Didarul AKHTAR Aysha XU Henglong ISLAM Md.Shafiqul MUSTAFA KAMAL Abu Hena UDDIN M Muslem ALAM Md.Wahidul | 2018 | Acta Oceanologica Sinica2018，37，8： | 0 |
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