[口头报告]Response of periphyton fatty acids to experimental changes in aqueous phosphorus

Response of periphyton fatty acids to experimental changes in aqueous phosphorus
编号：1692 稿件编号：4026 访问权限：仅限参会人 更新：2024-04-11 17:32:27 浏览：595次 口头报告

报告开始：暂无开始时间 （Asia/Shanghai）

报告时间：暂无持续时间

所在会议：[暂无会议] » [暂无会议段]

暂无文件

摘要
  1. Periphyton is an important basal food source for many aquatic consumers by directly or indirectly providing long-chain polyunsaturated fatty acids (LC-PUFA). Despite the fact that periphyton LC-PUFA content is very sensitive to aquepus nutrients, many prior studies were conducted in low nutrient rivers, while less is known about how periphyton LC-PUFA content may change in response to higher nutrient variation in eutrophic rivers.
  2. We conducted a periphyton culturing experiment by manipulating a gradient of aquepus nutrient concentrations from 0.002 to 0.18 mg P/L to investigate how aquepus nutrients affect periphyton fatty acids (FA) profiles from oligotrophic to eutrophic waters .
  3. Our results showed a significant curvilinear regressions relationship between aquepus nutrients and periphyton FA content. In oligotrophic conditions, periphyton LC-PUFA increased as aquepus nutrients increased, whereas in eutrophic waters, periphyton LC-PUFA decreased as aquepus nutrients increased. The tipping point of the effect of aquepus nutrients on periphyton LC-PUFA was predicted at 0.1 mg P/L. Variation in periphyton PUFA (EPA, ALA and LIN) were positively correlated with the density of alge, respectively diatoms, chlorophytes and cyanobacteria, which may be one of the reasons leading to variations in periphyton FA.
  4. Further, periphyton biomass experienced a significant increase with elevated aquepus nutrients, which was different to the relationship between periphyton LC-PUFA and aquepus nutrients. It was reflected the relative importance of food quality and food quality for aquatic consumers under different water nutrient conditions.
  5. Our study detected the response of periphyton FA to aquepus nutrients from oligotrophic to eutrophic conditions, and predicted  tipping point provides a reference for the protection of aquatic consumers. Our results highlight that periphyton food quality should be considered in the future conservation of river food webs.
 
 
关键字
Food quality; Food webs; Diatoms; Aquatic consumers; Fish
报告人
周博玮
硕士研究生 广东工业大学

稿件作者
郭芬 广东工业大学
周博玮 广东工业大学
发表评论
验证码 看不清楚，更换一张
全部评论
● 会务总协调  

● 学术安排

  

辜克兢

13950003604

gukejing@xmu.edu.cn

辜克兢

 13950003604

gukejing@xmu.edu.cn

柳    欣

13806024185

liuxin1983@xmu.edu.cn

窦    恒

 18627754021

douheng@chytey.com

孙佳妮

15201086188

scarlett@chytey.com

刘    琳

 13313708075

lliu@iue.ac.cn

 

● 会场技术服务

  

李    虎

柳    欣

18965842343

13806024185

hli@iue.ac.cn

liuxin1983@xmu.edu.cn
李招英

13860473552

lizhaoying@xmu.edu.cn

      
           
● 会场安排   ● 会议注册  

辜克兢

13950003604

gukejing@xmu.edu.cn

 胡勤梅 13554192326

mary@chytey.com

窦    恒

18627754021

douheng@chytey.com

 孙晓笛 18813296455 xiaodi.sun@xmu.edu.cn
           
● 商业赞助   ● 会议财务  
朱    佳 13950159036

zhujia@xmu.edu.cn

 许心雅 0592-2880181 xuxinya@xmu.edu.cn
           

● 海报张贴

  

● 酒店预定及咨询

  
张    君 13860426122 junzhang@xmu.edu.cn

李    璟

18627754146

lijing@chytey.com
卢    巍 18971567453 luwei@chytey.com      

 

登录 注册缴费 酒店预订