Drivers of ecosystem metabolism in two managed shallow lakes with different salinity and trophic conditions: The Sauce Grande and La Salada Lakes (Argentina)

María Belén Alfonso, Andrea Soledad Brendel, Alejandro José Vitale, Carina Seitz, María Cintia Piccolo, Gerardo Miguel Eduardo Perillo

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

Understanding the drivers and how they affect ecosystem metabolism is essential for developing effective management policy and plans. In this study, net ecosystem production (NEP), ecosystem respiration (R), and gross primary production (GPP) rates were estimated in relation to physicochemical, hydrological, and meteorological variables in La Salada (LS) and Sauce Grande (SG), two shallow lakes located in an important agricultural region with water management. LS is a mesosaline, mesotrophic-eutrophic lake, whereas SG is a hyposaline and eutrophic lake. GPP and R showed daily and seasonal variations, with R exceeding GPP during most of the study period in both lakes. Net heterotrophic conditions prevailed during the study period (NEP LS: -1.1 mmol O2 m-2 day-1 and NEP SG: -1.25 mmol O2 m-2 day-1). From data analysis, the temperature, wind speed, and lake volume are the main drivers of ecosystem metabolism for both lakes. Despite the significant differences between the two lakes, the NEP values were similar. The different hydrological characteristics (endorheic vs. flushing lake) were crucial in explaining why the two different systems presented similar ecosystem metabolic rates, emphasizing the importance of water management.

本文言語英語
論文番号1136
ジャーナルWater (Switzerland)
10
9
DOI
出版ステータス出版済み - 8 25 2018
外部発表はい

All Science Journal Classification (ASJC) codes

  • 生化学
  • 地理、計画および開発
  • 水圏科学
  • 水の科学と技術

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