Determinant variables on the isotopic values of particulate organic matter in a neotropical floodplain

作     者：Vinícius de ANDRADE URBANO Matheus MAXIMILIAN RATZ SCOARIZE Gustavo HENRIQUE ZAIA ALVES Driele DELANIRA-SANTOS Marcela da SILVA CAETANO Evanilde BENEDITO Vinícius de ANDRADE URBANO;Matheus MAXIMILIAN RATZ SCOARIZE;Gustavo HENRIQUE ZAIA ALVES;Driele DELANIRA-SANTOS;Marcela da SILVA CAETANO;Evanilde BENEDITO

作者机构：Departamento de Biologia(DBI)Laboratório de Ecologia EnergéticaUniversidade Estadual de Maringá(UEM)Maringá87020-900Brasil Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais(PEA)Universidade Estadual de Maringá(UEM)Maringá87020-900Brasil Departamento de Biologia GeralUniversidade Estadual de Ponta Grossa(UEPG)Campus UvaranasPonta Grossa 84030-900Brasil Australian Rivers Institute(ARI)Griffith UniversityNathan QLD 4111Australia 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2024年第42卷第4期

页      面：1173-1185页

核心收录：

学科分类：0710[理学-生物学] 081702[工学-化学工艺] 07[理学] 0707[理学-海洋科学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 0703[理学-化学] 

基　　金：Supported by the Research Nucleus in Limnology,Ichthyology and Aquaculture(NUPELIA)for logistic support,the Laboratory of Energetic Ecology and the Long-term Ecological Research Program(PELD/CNPq) Site 6-PIAP(upper ParanáRiver floodplain).PROEX,UEM Fundação Araucária for the scholarship 

主　　题：freshwater wetland stable isotopes food web subtropical environment 

摘      要：Particulate organic matter(POM)is an important energy source for aquatic consumers,understanding its origin and composition is essential for understanding the energetic dynamics of aquatic *** aim of this study was to analyze the relationship between POM and phytoplankton(isotopic values and chlorophyll concentration)and abiotic variables during dry and rainy *** was conducted in rivers and lagoons in the floodplain of the Upper Paraná*** found a greater difference inδ13 C values of POM between sampling points than between seasons,indicating that the composition of regional sources influences the composition of POM more than dry and rainy *** addition,the concentration of chlorophyll during the dry season was positively correlated withδ13 C values during that rainy ***,we found a relationship between factors limiting the growth of phytoplankton andδ13 C values of POM,such as phosphate ions,indicating that variables that regulate phytoplankton growth tend to influence the composition of POM in river ***,maintaining the variables that regulate the phytoplankton community is of fundamental importance for the composition of POM,an important energy source in aquatic environments.