Common carp feeding and spawning behaviours negatively impact the functioning of marsh ecosystems. In the Netley-Libau Marsh, situated on the southern end of Lake Winnipeg, water level regulations, nonpoint source nutrient pollution, and the non-native common carp are thought to be the main contributors to the degradation of the marsh habitat. Using acoustic telemetry, we analysed the movement rate, frequency and timing of suspected spawning migrations, spatial ecology, and aggregation of common carp in the Lake Winnipeg drainage over a three year time period. Common carp moved the farthest during the open water period when water temperature was >5 °C. Their annual migration into Netley-Libau Marsh was correlated to ordinal date. Common carp left the marsh in late spring/early summer, presumably feeding in Lake Winnipeg, before moving to overwintering sites situated in Traverse Bay and Lake Winnipeg, where they arrived typically by October and formed aggregations. These findings will inform habitat and fisheries managers in the effort to undertake evidence-based management actions. The predictability of the movements and the tendency for common carp to aggregate indicates that exclusion techniques and commercial fishing may represent viable management solutions.

鲤鱼的摄食和产卵行为对沼泽生态系统的功能产生负面影响。在位于温尼伯湖南端的 Netley-Libau 沼泽中，水位调节、非点源营养物污染和非本地鲤鱼被认为是造成沼泽栖息地退化的主要因素。我们使用声学遥测技术分析了三年时间段内温尼伯湖流域中疑似产卵迁徙、空间生态和鲤鱼聚集的运动速率、频率和时间。当水温>5°C时，鲤鱼在开放水域期间移动的最远。他们每年迁移到 Netley-Libau Marsh 与序数日期相关。鲤鱼在春末/夏初离开沼泽，大概在温尼伯湖觅食，在转移到位于特拉弗斯湾和温尼伯湖的越冬地点之前，它们通常在 10 月到达并形成聚集。这些发现将为栖息地和渔业管理者提供信息，以采取循证管理行动。运动的可预测性和鲤鱼聚集的趋势表明排除技术和商业捕鱼可能代表可行的管理解决方案。