A novel marine mesocosm facility to study global warming, water quality, and ocean acidification

被引：31

作者：

Duarte, Gustavo ^{[1
,2
]}

Calderon, Emiliano N. ^{[1
]}

Pereira, Cristiano M. ^{[1
]}

Marangoni, Laura F. B. ^{[1
,3
]}

Santos, Henrique F. ^{[1
,4
]}

Peixoto, Raquel S. ^{[1
,4
]}

Bianchini, Adalto ^{[1
,5
]}

Castro, Clovis B. ^{[1
,2
]}

机构：

[1] Inst Coral Vivo, Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Museu Nacl, Rio De Janeiro, Brazil

[3] Univ Fed Rio Grande, Inst Oceanog, Posgrad Oceanog Biol, Rio Grande, Brazil

[4] Univ Fed Rio de Janeiro, Inst Microbiol Paulo de Goes, Rio de Janeiro, Brazil

[5] Univ Fed Rio Grande, Inst Ciencias Biol, Rio Grande, Brazil

来源：

ECOLOGY AND EVOLUTION | 2015年 / 5卷 / 20期

关键词：

Experimental biology; flow-through system; marine mesocosm; open-source board control system; pCO(2) reactor; realism; stress physiology; CORAL COVER; REEF; PSEUDOREPLICATION; TOXICITY; DECLINE; COPPER;

D O I：

10.1002/ece3.1670

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

We describe a completely randomizable flow-through outdoor mesocosm for climate change and ecotoxicology studies that was built with inexpensive materials. The 16 raceway tanks allow up to 6x water renewal per hour, avoiding changes in natural abiotic seawater conditions. We use an open-source hardware board (Arduino) that was adapted to control heaters and an innovative CO2 injection system. This system reduced seawater pH up to -0.9 units and increased temperature up to +6 degrees C in three treatments and a control. Treatments can be continuously compared with the control and vary according to diel fluctuations, thus following the diel range observed in the sea. The mesocosm facility also includes an integrated secondary system of 48 aquaria for ecotoxicology studies. We validated the reproducibility and relevance of our experimental system by analyzing the variation of the total DNA of the microbial community extracted from corals in three elevated temperature scenarios during a 40-day experiment. We also present data from temperature, acidification, and copper contamination trials, which allowed continuous, reliable, and consistent treatment manipulations.

引用

页码：4555 / 4566

页数：12

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