COVER PHOTO: A rainbow trout feeding for drifting invertebrates at the Horseshoe Bend of the Glen Canyon tailwater reach of the Colorado River, Arizona, USA. In this issue, Korman et al. (Article e01427; doi:10.1002/ecm.1427) quantified the influence of prey abundance, turbidity, and competition on somatic growth rates, and the resulting effects on vital rates and spatial and temporal patterns in abundance. Photo credit: David Herasimtschuk, Freshwaters Illustrated.

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COVER PHOTO：彩虹鳟鱼为无脊椎动物提供食材，位于美国亚利桑那州科罗拉多河的Glen Canyon尾水河段的马蹄弯。在本期中，Korman等人。（文章e01427； doi：10.1002 / ecm.1427）量化了猎物的丰度，浊度和竞争对体细胞生长速率的影响，以及由此对生命率和空间时空分布的影响。照片提供：David Herasimtschuk，《淡水画报》。