Impact of multiple stressors on juvenile fish in estuaries of the northeast Pacific
Impact of multiple stressors on juvenile fish in estuaries of the northeast Pacific
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多种应激源对东北太平洋河口幼鱼的影响
DOI：
10.1111/gcb.14055
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发表时间：
2018
影响因子：
11.6
通讯作者：
Hughes, Brent B.
中科院分区：
文献类型：
--
作者：
Toft, Jason D.;Munsch, Stuart H.;Cordell, Jeffery R.;Siitari, Kiira;Hare, Van C.;Holycross, Brett M.;DeBruyckere, Lisa A.;Greene, Correigh M.;Hughes, Brent B.
确定全球变化对物种和生态系统影响的关键步骤是量化多种压力源的影响。迄今为止，全球变化科学一直以区域实地研究、实验操作、荟萃分析、概念模型、评论以及在广泛的时空尺度上关注单一压力源或物种的研究为主。在这里，我们提供了沿海系统的首批研究之一，在广泛的范围内检查多种压力源的影响，重点关注横跨 1,600 公里海岸线的 20 个河口的培育功能、25 年的监测以及东北太平洋沿岸的 7 种鱼类和无脊椎动物物种。我们假设那些最依赖河口并受人类活动负面影响的物种在人为土地覆盖、污染和水流压力较大的河口中的存在和丰度会较低。我们发现七个物种中的两个（奇努克鲑鱼和英国鳎鱼）的幼鱼与河口压力源之间存在显着的负相关关系。在污染压力较大的河口，奇努克鲑鱼出现的可能性较小，数量也较少。在流动压力较大的河口，它们的数量也较少，尽管这种关系微不足道。在土地覆盖压力较大的河口，英国鳎鱼的数量较少。我们共同提供了新的经验证据，表明压力源对两种鱼类的影响在东北太平洋沿岸的可检测趋势中达到顶峰，从而提高了保护其栖息地免受污染、土地覆盖和水流压力源影响的需求。其他五个物种缺乏反应可能与对特定压力源的不同抵抗力、压力源指标的类型和精度以及河口和栖息地捕获数据的限制有关。获得对物种影响的改进测量将指导未来的管理行动，并有助于预测在人为压力源和气候变化情景下如何优化河口保育功能。
A key step in identifying global change impacts on species and ecosystems is to quantify effects of multiple stressors. To date, the science of global change has been dominated by regional field studies, experimental manipulation, meta‐analyses, conceptual models, reviews, and studies focusing on a single stressor or species over broad spatial and temporal scales. Here, we provide one of the first studies for coastal systems examining multiple stressor effects across broad scales, focused on the nursery function of 20 estuaries spanning 1,600 km of coastline, 25 years of monitoring, and seven fish and invertebrate species along the northeast Pacific coast. We hypothesized those species most estuarine dependent and negatively impacted by human activities would have lower presence and abundances in estuaries with greater anthropogenic land cover, pollution, and water flow stress. We found significant negative relationships between juveniles of two of seven species (Chinook salmon and English sole) and estuarine stressors. Chinook salmon were less likely to occur and were less abundant in estuaries with greater pollution stress. They were also less abundant in estuaries with greater flow stress, although this relationship was marginally insignificant. English sole were less abundant in estuaries with greater land cover stress. Together, we provide new empirical evidence that effects of stressors on two fish species culminate in detectable trends along the northeast Pacific coast, elevating the need for protection from pollution, land cover, and flow stressors to their habitats. Lack of response among the other five species could be related to differing resistance to specific stressors, type and precision of the stressor metrics, and limitations in catch data across estuaries and habitats. Acquiring improved measurements of impacts to species will guide future management actions, and help predict how estuarine nursery functions can be optimized given anthropogenic stressors and climate change scenarios.
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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DOI：
--
发表时间：
2005
期刊：
影响因子：
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作者：
Carrie V. Kappel
通讯作者：
Carrie V. Kappel
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DOI：
--
发表时间：
2007
期刊：
影响因子：
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作者：
J. Toft;Jeffery R. Cordell;C. Simenstad;Lia Stamatiou
通讯作者：
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