Determining where fish are distributed across days and seasons is valuable for understanding their ecology, evolution and conservation. The results presented here provide insight into the spatial and temporal distribution of brown trout (native salmonid species) and dace (invasive cyprinid species) in an artificially impounded section of lowland river, demonstrating that both species remain relatively local to their release point and do not exhibit wide-ranging movements from late summer into winter. Commonalities in the movement patterns were observed between the species despite their contrasting life histories, but there were also important differences observed both in their home range and activity patterns over the duration of the study. In general dace were much more active than trout. Both trout and dace exhibited clear crepuscular peaks in movement with higher displacement rates being observed during dawn and dusk periods which remained consistent over the duration of the study. Both species exhibited a high residency which may be a direct result of the artificial barrier present, promoting residency. Trout showed a significant increase in displacement rates and a drop in residency in November which may represent putative spawning behaviour. In general home range sizes remained stable over the tracking period for both species. Home range size was affected by fish length for both species, with larger individuals being more localised then smaller individuals. We propose that the diel patterns observed are primarily driven by foraging activity and opportunity which changes with seasonal influences and onset of potential spawning period and/or overwintering behaviour. This study demonstrates how data derived from telemetry studies can reveal movement behaviours of fish species associated with undertaking basic ecological requirements (feeding, shelter etc.) which are regulated by variation in the environment. Understanding the interplay between the environment and an animal’s behaviour is important from a conservation management perspective with increasing environmental pressures and predicted regime changes. From a fishery management viewpoint these data can feed into stock status monitoring in difficult to monitor impounded lowland riverine habitat and also increase our understanding of how potential human induced changes affect fish populations.

中文翻译：

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人工蓄水河流栖息地中褐鳟（Salmo trutta）和鲮鱼（Leuciscus leuciscus）的空间生态学：声学遥测研究的结果

确定鱼类在不同天和季节的分布位置对于了解它们的生态、进化和保护很有价值。此处提供的结果提供了对低地河流人工蓄水部分中褐鳟鱼（本地鲑鱼物种）和鲱鱼（入侵鲤科鱼类物种）的时空分布的深入了解，表明这两种物种相对于它们的释放点保持相对本地化，并且不会表现出从夏末到冬季的广泛运动。尽管它们的生活史截然不同，但在物种之间观察到运动模式的共性，但在研究期间，它们的栖息地和活动模式也存在重要差异。一般来说，鲮鱼比鳟鱼更活跃。鳟鱼和鲇鱼在运动中表现出明显的黄昏峰值，在黎明和黄昏期间观察到更高的位移率，在研究期间保持一致。这两个物种都表现出高驻留率，这可能是存在人工屏障的直接结果，促进了驻留率。鳟鱼在 11 月表现出迁移率的显着增加和栖息地的下降，这可能代表了推定的产卵行为。总的来说，两个物种的家庭范围大小在追踪期间保持稳定。两个物种的家庭范围大小受鱼类长度的影响，较大的个体比较小的个体更局部化。我们建议观察到的昼夜模式主要是由觅食活动和机会驱动的，这些活动和机会随季节性影响和潜在产卵期和/或越冬行为的开始而变化。这项研究展示了来自遥测研究的数据如何揭示与承担基本生态要求（摄食、庇护等）相关的鱼类的运动行为，这些要求受环境变化的调节。从保护管理的角度来看，随着环境压力的增加和预期的制度变化，了解环境与动物行为之间的相互作用非常重要。