Wehrmann Jasper, de Boer Folkert, Benjumea Rafa, Cavaillès Simon, Engelen Dries, Jansen Johannes, Verhelst Brecht, M G Vansteelant Wouter
BRC Foundation, Dijkgraaf 35, 6721NJ Bennekom, The Netherlands BRC Foundation Bennekom Netherlands.
Zostera B.V., Halve Raak 30, 2771 AD Boskoop, The Netherlands Zostera B.V. Boskoop Netherlands.
Zookeys. 2019 Apr 8;836:135-157. doi: 10.3897/zookeys.836.29252. eCollection 2019.
One of the most important geographical bottlenecks for migrating raptors in the east African-Palearctic migration system is situated between the easternmost tip of the Black Sea and the Lesser Caucasus, just north of Batumi, in the Republic of Georgia. Since 2008, citizen scientists of the Batumi Raptor Count (BRC) have monitored the autumn raptor passage daily from mid-August until mid-October, collecting also detailed information about the age and sex of focal species. The full BRC dataset was recently made available through the Global Biodiversity Information Facility (GBIF). Here we describe how count data were collected, managed, and processed for trend analysis over the past 10 years. This dataset offers a unique baseline for monitoring the state of migrant raptor populations in the east African-Palearctic flyway in the 21 century. We discuss potential pitfalls for users and hope that the open access publication of our data will stimulate flyway-scale and continent-wide collaboration for raptor migration monitoring in the Old World.
在东非-古北界迁徙系统中，对于迁徙猛禽而言，最重要的地理瓶颈之一位于黑海最东端和小高加索山脉之间，就在格鲁吉亚共和国巴统以北。自2008年以来，巴统猛禽计数（BRC）的公民科学家们从8月中旬到10月中旬每天监测秋季猛禽迁徙情况，还收集了有关重点物种年龄和性别的详细信息。BRC的完整数据集最近通过全球生物多样性信息设施（GBIF）发布。在此，我们描述过去10年中如何收集、管理和处理计数数据以进行趋势分析。该数据集为监测21世纪东非-古北界迁徙路线上迁徙猛禽种群状况提供了一个独特的基线。我们讨论了用户可能遇到的潜在问题，并希望我们数据的开放获取出版将促进旧世界猛禽迁徙监测的迁徙路线规模和全大陆范围的合作。
