Predation on the Endangered Hungarian Meadow Viper in Pastures and Hayfields: Insights From Plasticine Models

IF 2.4 3区 环境科学与生态学 Q2 ECOLOGY
Attila Móré , Bálint Üveges , János Simics , Dávid Radovics , Gergő Kovács , Barnabás Bancsik , Bálint Wenner , Mátyás Budai , Ádám Tisza , Csaba Vadász , Szabolcs Mizser , Béla Tóthmérész , Edvárd Mizsei
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引用次数: 0

Abstract

Management of grasslands for agriculture and other land uses is a critical issue for the conservation of grassland animals, both due to direct effects on mortality, as well as indirect effects such as altered predation regimes. In this study, we investigated the effect of mowing on the predation pressure by birds on an endangered snake, the Hungarian meadow viper (Vipera ursinii rakosiensis), using plasticine snake models. We placed 200 snake models each in mowed hayfields and grazed pastures (as controls) in two study periods, before and after mowing on hayfields, in 2021 and 2022. We found no strong negative effects of mowing on attack rates by birds in our study. Attack rates on snake models were higher before mowing than after mowing, and in general lower in the second year of the study than in 2021. However, in 2021 attack rates on snake models in pastures were higher than on hayfields, but this pattern reversed in 2022, when attacks were more frequent on hayfields than pastures. Our study highlights the importance of considering potential factors influencing predation pressure and predator-prey dynamics in grassland habitats, as well as the need for further research to provide results for evidence-based conservation management strategies to mitigate population declines and local extinction risk.

牧场和干草田中濒危匈牙利草地蝰蛇的捕食行为:塑模的启示
为农业和其他土地用途而对草地进行管理是保护草地动物的一个关键问题,这不仅会直接影响草地动物的死亡率,还会产生间接影响,如改变捕食机制。在这项研究中,我们使用塑化蛇模型研究了割草对鸟类捕食濒危蛇类匈牙利草地蝰(Vipera ursinii rakosiensis)的压力的影响。我们在 2021 年和 2022 年的两个研究时段,即草场刈割前后,在刈割过的草场和放牧过的牧场(作为对照组)各放置了 200 个蛇模型。我们在研究中发现,除草对鸟类的攻击率没有强烈的负面影响。除草前蛇模型的攻击率高于除草后,研究第二年的攻击率总体上低于 2021 年。然而,2021 年蛇模型在牧场的攻击率高于在草场的攻击率,但这一模式在 2022 年发生了逆转,在草场的攻击率高于在牧场的攻击率。我们的研究强调了考虑影响草原栖息地捕食压力和捕食者-猎物动态的潜在因素的重要性,以及进一步研究的必要性,以便为基于证据的保护管理策略提供结果,从而缓解种群数量下降和局部灭绝风险。
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来源期刊
Rangeland Ecology & Management
Rangeland Ecology & Management 农林科学-环境科学
CiteScore
4.60
自引率
13.00%
发文量
87
审稿时长
12-24 weeks
期刊介绍: Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journal''s mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes. Rangelands represent approximately 50% of the Earth''s land area and provision multiple ecosystem services for large human populations. This expansive and diverse land area functions as coupled human-ecological systems. Knowledge of both social and biophysical system components and their interactions represent the foundation for informed rangeland stewardship. Rangeland Ecology & Management uniquely integrates information from multiple system components to address current and pending challenges confronting global rangelands.
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