...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ICES Journal of Marine Science >Physiological responses to temperature and ocean acidification in tropical fleshy macroalgae with varying affinities for inorganic carbon
【24h】

Physiological responses to temperature and ocean acidification in tropical fleshy macroalgae with varying affinities for inorganic carbon

机译：对热带肉质大理石酸化的生理反应，具有不同亲和性无机碳的亲和力

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Marine macroalgae have variable carbon-uptake strategies that complicate predicting responses to environmental changes. In seawater, dissolved inorganic carbon availability can affect the underlying physiological mechanisms influencing carbon uptake. We tested the interactive effects of ocean acidification (OA) and warming on two HCO3--users (Lobophora sp. and Amansia rhodantha), a predominately CO2-user (Avrainvillea nigricans), and a sole CO2-user (Plocamium hamatum) in the Great Barrier Reef, Australia. We examined metabolic rates, growth, and carbon isotope values (delta C-13) in algae at 26, 28, or 30 degrees C under ambient or elevated pCO(2) (1000 mu atm). Under OA, delta C-13 values for the HCO3--users decreased, indicating less reliance on HCO, while (delta C-13 values for CO2-users were unaffected. Both HCO3--users decreased in growth across temperatures under ambient pCO(2), but this negative effect was alleviated by OA at 30 degrees C. A. nigricans lost biomass across all treatments and P. hamatum was most sensitive, with reduced survival in all physiological responses. Metabolic rates varied greatly to interacting temperature and OA and indicated a decoupling between the relationship of photosynthesis and growth. Furthermore, our findings suggest HCO3--users are more responsive to future CO2 changes, and highlight examining carbon physiology to infer potential responses to interacting environmental stressors.
机译：海洋Macroalgae具有可变的碳吸收策略，使预测对环境变化的反应复杂化。在海水中，溶解无机碳可用性会影响影响碳吸收的潜在生理机制。我们测试了海洋酸化（OA）的互动效果，并在两种HCO3 - 用户（Lobophora SP。和Amansia rhodantha），主要是Co2-User（Avrainvillea Nigricans），以及唯一的CO2-User（Plocamium Hamatum）。澳大利亚大堡礁。在环境或升高的PCO（2）（2）（1000μmat）下，在26,28或30℃下检查代谢率，生长和碳同位素值（Delta C-13）。在OA下，HCO3 - 用户的Delta C-13值下降，表明对HCO的依赖较少，而（二氧化碳 - 用户的Delta C-13值未受影响。HCO3 - 用户在环境PCO下的温度下降2），但这种负面影响在所有治疗中的30摄氏度失去生物量，并且P. Hamatum在所有生理反应中减少了最敏感的。代谢率与相互作用的温度和OA变化，并表明了脱耦光合作用和生长的关系之间。此外，我们的研究结果表明HCO3 - 用户对未来的二氧化碳变化更加敏感，并突出碳生理学来推断出对互动环境压力源的潜在反应。

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号