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首页> 外文期刊>Marine ecology >Scales of recruitment variability in warming waters: Comparing native and introduced oysters in Hood Canal, Washington, USA
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Scales of recruitment variability in warming waters: Comparing native and introduced oysters in Hood Canal, Washington, USA

机译：温暖水域中的招募变异性规模：比较美国华盛顿胡德运河的本地牡蛎和引进牡蛎

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The effect of climate change on natural oyster recruitment has the potential to disrupt many of the ecosystem services oysters provide. Due to the temperature-sensitivity of reproduction, oyster recruitment may shift as water temperatures rise. A biological imprint of climate change was revealed in a multi-decadal time series of recruitment of non-native Pacific oysters (Crassostrea gigas) in the main stem of Hood Canal, Washington, USA, extracted from historic fishery documents. Water in July and August warmed significantly from 1945 to 1995 (0.028 +/- 0.004 degrees C per year [+/- SE]) and accounted for an increase in Pacific oyster recruitment (7% per year, 0.028 +/- 0.006spat per year on log scale [+/- SE]); recruitment also strongly tracked inter-annual variability in summer water temperature. Methods used to collect historical data were repeated in 2013-2015 when recruitment of both Pacific oysters and native Olympia oysters (Ostrea lurida) were recorded in main stem and lower Hood Canal. Both historic and modern data show large variation within and between years for temperature as well as recruitment. The modern data add information regarding spatial variation, in that recruitment patterns in the two regions of Hood Canal were decoupled. As temperatures continue to increase, non-native Pacific oysters are likely to be favored over Olympia oysters, which recruit earlier at lower temperatures and presently contribute less than half of total oyster recruits. Future recruitment, however, may be limited by environmental factors other than temperature, a point indicated particularly in Hood Canal where many subtidal species already respond strongly to gradients in dissolved oxygen.
机译：气候变化对牡蛎招募的影响有可能破坏牡蛎提供的许多生态系统服务。由于繁殖的温度敏感性，牡蛎的募集可能会随着水温的升高而发生变化。在数十年的时间序列中，从历史渔业文件中摘录了美国华盛顿胡德运河主要干地的非本地太平洋牡蛎（Crassostrea gigas）招募过程，揭示了气候变化的生物烙印。从1945年到1995年，7月和8月的水显着变暖（每年0.028 +/- 0.004摄氏度[+/- SE]），并导致太平洋牡蛎招募增加（每年7％，每只牡蛎0.028 +/- 0.006spat对数刻度年份[+/- SE]）；招聘也强烈追踪了夏季水温的年际变化。 2013-2015年重复了用于收集历史数据的方法，当时在主干和下胡德渠中记录了太平洋牡蛎和本地奥林匹亚牡蛎（Ostrea lurida）的募集情况。历史数据和现代数据均显示，温度和募集的年内和年间差异很大。现代数据添加了有关空间变化的信息，因为胡德运河的两个区域的募集模式已解耦。随着温度持续升高，非本地太平洋牡蛎可能会比奥林匹亚牡蛎更受青睐，后者会在较低的温度下较早招募，目前贡献的牡蛎不到总牡蛎的一半。但是，未来的招募可能会受到温度以外的其他环境因素的限制，这一点在胡德运河尤其明显，那里的许多潮下生物已经对溶解氧的梯度产生强烈反应。

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