典型海湾与海岛近海脉红螺碳、氮稳定同位素特征差异  

Differences of carbon and nitrogen stable isotope of Rapana venosa between typical bays and offshore islands

作　　者：韩温诺 李曌[1] 庞敏 宫于琛 吴忠迅 张朝晖 康丽娜 张学雷 王宗灵 屈佩 HAN Wennuo;LI Zhao;PANG Min;GONG Yuchen;WU Zhongxun;ZHANG Zhaohui;KANG Lina;ZHANG Xuelei;WANG Zongling;QU Pei(China National Environmental Monitoring Centre,Beijing 100012,China;First Institute of Oceanography,Ministry of Natural Resources,Observation and Research Station of Bohai Strait Eco-Corridor,Key Laboratory of Eco-environmental Science and Technology,Qingdao 266061,China;Laoshan Laboratory,Marine Ecology and Environmental Science Laboratory,Qingdao 266234,China;Changdao National Marine Park Management Center,Yantai 265899,China;Lanzhi Ocean Ecological Technology Research Center,Beijing 102206,China)

机构地区：[1]中国环境监测总站,北京100012 [2]自然资源部第一海洋研究所,渤海海峡生态通道野外科学观测站,生态环境科学与技术重点实验室,青岛266061 [3]崂山实验室,海洋生态与环境科学功能实验室,青岛266234 [4]长岛国家海洋公园管理中心,烟台265899 [5]蓝智海洋生态技术研究中心,北京102206

出　　处：《生态学报》2024年第10期4244-4253,共10页Acta Ecologica Sinica

基　　金：山东省自然科学基金(ZR2022MD027,ZR2021MD014);崂山实验室项目(LSKJ202203902);蔚蓝星球基金项目(POOPFOOO678)。

摘　　要：为深入了解不同大小脉红螺(Rapana venosa)的碳、氮稳定同位素特征,探究其在典型海湾和海岛水域生态系统所处营养位置,于2022年春季和夏季在胶州湾和长岛近海通过拖网和潜水采集160个脉红螺样本,详细分析了不同体长、体重脉红螺的δ^(13)C和δ^(15)N变化,并计算各研究区域的脉红螺核心生态位宽度及相关参数。结果显示,脉红螺δ^(13)C值范围在-22.12‰—-16.63‰,四组数据均值为-19.74‰—-17.42‰,δ^(15)N值范围在8.77‰—13.48‰,均值为9.64‰—12.81‰,各组数据营养级均值在2.63—3.57;胶州湾春季脉红螺δ^(13)C值与体长、体重呈显著负相关,夏季呈显著正相关,长岛近海区域无明显变化,表明不同季节和不同区域的食物多样性水平存在差异,胶州湾脉红螺δ^(13)C、δ^(15)N的变化更为突出;两个研究区域δ^(15)N值和营养级与体长、体重呈显著正相关,主要由于脉红螺摄食偏好性差异,较大的脉红螺倾向于摄食高营养级生物,造成营养级较高。此外,胶州湾脉红螺营养级高于长岛近海,表明其^(15)N来源更为广泛。营养生态位总面积、δ^(15)N差值、δ^(13)C差值、校正后标准椭圆面积等评价指标,揭示了不同区域、不同季节的脉红螺稳定同位素营养生态位的显著差异,反映了区域地理位置与食物来源对脉红螺δ^(13)C和δ^(15)N的影响。上述研究结果为近海生态系统食物网的构建提供了重要数据,并为区域生物资源的管理和生态系统修复工作提供了科学支撑。This paper aims to understand the carbon and nitrogen stable isotope characteristics of Rapana venosa across various sizes,in order to gain insights into the nutrient dynamics within a typical bay and island water ecosystem.A total of 160 samples were collected through trawling and diving activities conducted in the Jiaozhou Bay and Changshan Archipelago offshore regions during the spring and summer of 2022.In this study,we conducted an analysis of theδ~(13)C andδ~(15)N isotopic values of R.venosa individuals,taking into account variations in body length and weight.Additionally,we calculated the core niche breadth and other related parameters for each specific research area.The findings revealed that theδ~(13)C andδ~(15)N values of R.venosa exhibited a range of-22.12‰to-16.63‰and 8.77‰to 13.48‰,respectively.The mean values for these isotopic ratios were determined to be-19.74‰to-17.42‰and 9.64‰to 12.81‰,respectively.The mean trophic level of R.venosa varied between 2.63 and 3.57 across different size classes.In spring,a notable negative correlation was observed between theδ~(13)C values and the body length and weight of R.venosa collected from Jiaozhou Bay,whereas a significant positive correlation was found in summer.In contrast,negligible fluctuations were detected in the samples obtained from the offshore regions of the Changshan Archipelago.The findings indicate variations in food diversity across different seasons and geographic areas.The variations inδ~(13)C andδ~(15)N were more conspicuous within Jiaozhou Bay.In addition,a noteworthy positive association was observed between theδ~(15)N values and trophic level,as well as body length and weight,in both regions under investigation.This correlation can primarily be attributed to the divergent feeding preferences of R.venosa,whereby larger individuals tend to consume organisms from higher trophic levels,resulting in an elevated trophic level.Furthermore,the R.venosa exhibited a higher trophic level in Jiaozhou Bay compared to offshore i

关 键 词：胶州湾 长岛近海 脉红螺 稳定同位素 

分 类 号：G63[文化科学—教育学]