Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China.
State Environmental Protection Key Laboratory of Coastal Ecosystem, National Marine Environmental Monitoring Center, Dalian, 116023, China.
Sci Total Environ. 2022 Jun 25;827:154285. doi: 10.1016/j.scitotenv.2022.154285. Epub 2022 Mar 3.
Although autotrophic phytoplankton and heterotrophic zooplankton both play important roles in the food web of marine ecosystem, their comprehensive interactions and spatial patterns at continental scale remain poorly studied. Here, we collected 251 seawater samples along 13,000 km of Chinese coastline, and microscopically investigated the latitudinal gradients of planktonic diversities. In total, 307 phytoplanktonic and 311 zooplanktonic species were visually identified. Using the newly developed Inter-Domain Ecological Networks (IDENs) approach, the phytoplankton-zooplankton interaction networks were constructed. We found that the phyto-zooplankton network structure was varied across three regions, more complex and numerous connections along the southern coast than in the north. In addition, some particular associations between zooplanktonic and phytoplanktonic groups were found to be localized in specific regions. Furthermore, the seawater temperature and salinity were the major driving force for shaping planktonic interaction networks. These results provide a deeper understanding of planktonic biogeography and phytoplankton-zooplankton interaction patterns.
尽管自养浮游植物和异养浮游动物在海洋生态系统的食物网中都起着重要作用，但它们在大陆尺度上的综合相互作用和空间格局仍未得到充分研究。在这里，我们沿着中国海岸线收集了 251 个海水样本，并用显微镜研究了浮游生物多样性的纬度梯度。总共鉴定出 307 种浮游植物和 311 种浮游动物。使用新开发的域间生态网络（IDENs）方法，构建了浮游植物-浮游动物相互作用网络。我们发现，沿三个区域的藻-浮游动物网络结构不同，与北部相比，南部沿海的网络结构更复杂，连接更多。此外，还发现一些特定的浮游动物和浮游植物群之间的联系局限于特定的区域。此外，海水温度和盐度是塑造浮游生物相互作用网络的主要驱动力。这些结果提供了对浮游生物生物地理学和浮游植物-浮游动物相互作用模式的更深入了解。
