Stopover ecology of the least sandpiper (Calidris minutilla) in Iowa: implications for reservoir management

IF 1.1 4区环境科学与生态学 Q4 LIMNOLOGY

Lake and Reservoir Management Pub Date : 2021-05-28 DOI:10.1080/10402381.2021.1920071

Rachel A. Vanausdall, S. Dinsmore

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引用次数: 0

Abstract

Abstract Vanausdall RA, Dinsmore SJ. 2021. Stopover ecology of the least sandpiper (Calidris minutilla) in Iowa: implications for reservoir management. Lake Reserv Manage. 37:300–312. Multipurpose reservoirs can be used to manage habitat for shorebirds during migration, an energetically costly event that may influence demographics and population numbers. This is particularly true for shorebirds that migrate through the interior of the United States, which has lost much of its wetland habitat. Shorebirds use aquatic systems during stopover periods throughout migration to rest and refuel. Understanding the factors that influence the probability of a shorebird remaining at a stopover area can inform decisions regarding reservoir management. We examined the influence of habitat and environmental covariates and body condition on the daily local residency probability of migrant least sandpipers (Calidris minutilla) at Saylorville Lake, a reservoir in central Iowa. We monitored 189 least sandpipers in fall 2016, 2017, 2019, and 2020 using radiotelemetry. Using a nest survival model, our most competitive model included significant negative effects of water level (β = −8.35, 85% CI = −11.18, −5.52) and body condition (β = −4.91, 85% CI = −6.82, −3.01) on residency probability. We calculated a mean daily local residency probability of 0.78 (95% CI 0.56, 1.00) and used this value to calculate a minimum stopover duration of 3.96 d (95% CI = 3.45, 4.46). Our findings indicate that the timing of water level management at Saylorville Lake can impact the residency probability of the least sandpiper. Drawing down water levels just prior to fall migration and maintaining water levels at or below the conservation pool level (254.8 m) can provide habitat for this species and likely other shorebirds.

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爱荷华州最小鹬（Calidris minutilla）的中途停留生态学：对水库管理的影响

摘要Vanausdall RA，Dinsmore SJ.2021。爱荷华州最小鹬（Calidris minutilla）的中途停留生态学：对水库管理的影响。湖泊保护区管理。37:300-312。多用途水库可用于管理迁徙期间的滨鸟栖息地，这是一项能源成本高昂的活动，可能会影响人口统计和种群数量。对于在美国内陆迁徙的滨鸟来说尤其如此，因为美国已经失去了大部分湿地栖息地。海岸鸟在迁徙的中途停留期间利用水生系统休息和补充燃料。了解影响滨鸟停留在中途停留区概率的因素可以为水库管理决策提供信息。我们研究了栖息地和环境协变量以及身体状况对爱荷华州中部塞洛维尔湖水库迁徙最小鹬（Calidris minutilla）每日当地居住概率的影响。我们在2016年、2017年、2019年和2020年秋季使用无线电遥测法监测了189只最少的鹬。使用巢穴生存模型，我们最具竞争力的模型包括水位（β=−8.35，85%CI=−11.18，−5.52）和身体状况（β=–4.91，85%CI=−6.82，−3.01）对居住概率的显著负面影响。我们计算了0.78（95%置信区间0.56,1.00）的平均每日本地居留概率，并使用该值计算了3.96的最小停留时间 d（95%CI=3.45，4.46）。我们的研究结果表明，塞洛维尔湖水位管理的时间会影响最小鹬的栖息概率。在秋季迁徙前降低水位，并将水位保持在保护池水位或以下（254.8 m）可以为该物种和可能的其他滨鸟提供栖息地。

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来源期刊

Lake and Reservoir Management 环境科学-海洋与淡水生物学

自引率

6.70%

发文量

期刊介绍： Lake and Reservoir Management (LRM) publishes original, previously unpublished studies relevant to lake and reservoir management. Papers address the management of lakes and reservoirs, their watersheds and tributaries, along with the limnology and ecology needed for sound management of these systems. Case studies that advance the science of lake management or confirm important management concepts are appropriate as long as there is clearly described management significance. Papers on economic, social, regulatory and policy aspects of lake management are also welcome with appropriate supporting data and management implications. Literature syntheses and papers developing a conceptual foundation of lake and watershed ecology will be considered for publication, but there needs to be clear emphasis on management implications. Modeling papers will be considered where the model is properly verified but it is also highly preferable that management based on the model has been taken and results have been documented. Application of known models to yet another system without a clear advance in resultant management are unlikely to be accepted. Shorter notes that convey important early results of long-term studies or provide data relating to causative agents or management approaches that warrant further study are acceptable even if the story is not yet complete. All submissions are subject to peer review to assure relevance and reliability for management application.