...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Effect of pCO_2 on the growth, respiration, and photophysiology of massive Porites spp. in Moorea, French Polynesia
【24h】

Effect of pCO_2 on the growth, respiration, and photophysiology of massive Porites spp. in Moorea, French Polynesia

机译：pCO_2对大块孔雀藻的生长，呼吸和光生理的影响。在法属波利尼西亚的莫雷阿岛

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

I tested the hypothesis that high pCO_2 (76.6 Pa and 87.2 Pa vs. 42.9 Pa) has no effect on the metabolism of juvenile massive Porites spp. after 11 days at 28 ℃ and 545 μmol quanta m~(-2) s~(-1). The response was assessed as aerobic dark respiration, skeletal weight (i.e., calcification), biomass, and chlorophyll fluorescence. Corals were collected from the shallow (3-4 m) back reef of Moorea, French Polynesia (17°28.614'S, 149°48.917'W), and experiments conducted during April and May 2011. An increase in pCO_2 to 76.6 Pa had no effect on any dependent variable, but 87.2 Pa pCO_2 reduced area-normalized (but not biomass-normalized) respiration 36 %, as well as maximum photochemical efficiency (F_v/F_m) of open RCIIs and effective photochemical efficiency of RCIIs in actinic light (△F/F'_m); neither biomass, calcification, nor the energy expenditure coincident with calcification (J g~(-1)) was effected. These results do not support the hypothesis that high pCO_2 reduces coral calcification through increased metabolic costs and, instead, suggest that high pCO_2 causes metabolic depression and photochemical impairment similar to that associated with bleaching. Evidence of a pCO_2 threshold between 76.6 and 87.2 Pa for inhibitory effects on respiration and photochemistry deserves further attention as it might signal the presence of unpredictable effects of rising pCO_2.
机译：我检验了以下假设：高pCO_2（76.6 Pa和87.2 Pa对42.9 Pa）对未成年大块Porites spp的代谢没有影响。在28℃和545μmol量子m〜（-2）s〜（-1）下工作11天后。该反应被评估为有氧黑暗呼吸，骨骼重量（即钙化），生物量和叶绿素荧光。从法属波利尼西亚莫雷阿岛（17°28.614'S，149°48.917'W）的浅礁（3-4 m）收集珊瑚，并​​在2011年4月至2011年5月进行了实验。pCO_2增加到76.6 Pa对任何因变量无影响，但87.2 Pa pCO_2减少了面积归一化（而非生物量归一化）的呼吸36％，以及开放式RCII的最大光化学效率（F_v / F_m）和光化光下RCII的有效光化学效率（ △F / F'_m）;无论是生物量，钙化，还是与钙化（J g〜（-1））一致的能量消耗都没有受到影响。这些结果不支持高pCO_2通过增加代谢成本来减少珊瑚钙化的假设，而是表明高pCO_2引起的代谢抑制和光化学损伤类似于漂白。 pCO_2阈值在76.6和87.2 Pa之间的抑制呼吸和光化学作用的证据值得进一步关注，因为它可能表明存在pCO_2升高的不可预测的影响。

著录项

  • 来源
    《Marine biology》 |2012年第10期|p.2149-2160|共12页
  • 作者

    Peter J. Edmunds;

  • 作者单位

    Department of Biology, California State University, 18111 Nordhoff Street, Northridge, CA 91330, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
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