Rocha Gregorio, Tizado Emilio Jorge, Sánchez-García Carlos
Department of Agro-Forestry Engineering, Universidad de Extremadura, 10600 Plasencia, Spain.
Department of Biodiversity and Environmental Management, Universidad de León, 24401 Ponferrada, Spain.
Animals (Basel). 2022 Aug 17;12(16):2106. doi: 10.3390/ani12162106.
In some regions of Spain, hunting grounds conduct management targeting the European turtle dove (), a commonly hunted species, and unsustainable harvesting levels at these sites have been identified as one of the factors responsible for the species' decline across its range. In hunting grounds where food was provided, we estimated the local turtle dove abundance before the hunting season, productivity (juvenile/adult ratio) and harvesting levels using harvest data from managed grounds over 4 years (2009, 2015, 2019 and 2020). Compared to previous research, a higher productivity value was found (median 1.67, range 1.24-4.15) in grounds providing more food for a longer period. We calculated that the harvesting rate should not exceed 37% of the estimated turtle dove population size (35-45%). Significant differences were found between the estimated local turtle dove abundance using a removal sampling protocol and the number of birds observed by hunters before the hunting season, which suggests that in a high proportion of grounds, the latter method may have led to bird overestimation and overharvesting. Our research supports the current European Union's harvest management plan to promote sustainable hunting in grounds where targeted management is conducted.
在西班牙的一些地区，狩猎场对普通的狩猎物种欧斑鸠开展管理工作，这些场地不可持续的捕猎水平已被确定为导致该物种在其分布范围内数量下降的因素之一。在提供食物的狩猎场，我们利用4年（2009年、2015年、2019年和2020年）管理场地的捕猎数据，估算了狩猎季节前当地欧斑鸠的数量、繁殖率（幼鸟/成鸟比例）和捕猎水平。与之前的研究相比，在更长时间内提供更多食物的场地中发现了更高的繁殖率值（中位数为1.67，范围为1.24 - 4.15）。我们计算出捕猎率不应超过估计的欧斑鸠种群数量的37%（35 - 45%）。使用去除抽样方案估算的当地欧斑鸠数量与猎人在狩猎季节前观察到的鸟类数量之间存在显著差异，这表明在很大一部分场地中，后一种方法可能导致了鸟类数量的高估和过度捕猎。我们的研究支持欧盟目前的捕猎管理计划，以促进在进行目标管理的场地实现可持续捕猎。
