New distribution sites and local population trends of the white-eared night heron (Gorsachiusmagnificus) in China.

IF 1 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION
Biodiversity Data Journal Pub Date : 2025-06-12 eCollection Date: 2025-01-01 DOI:10.3897/BDJ.13.e159088
Binqiang Li, Shanjun Ma, Nehafta Bibi, Miaodan Yang, Lifeng Tan
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Abstract

The White-eared Night Heron (Gorsachiusmagnificus) is an endangered species facing increasing threats from human activities and ecological changes throughout its fragmented habitat. In this study, we integrate decade-long news data (2015-2024) and systematic field monitoring (2013-2024) to assess the species' distribution, local population trends and conservation challenges in China. Our analysis of 36 verified new reports revealed 14 new distribution sites across 11 provinces. Moreover, there were 17 reports of injuries to the White-eared Night Heron, including five wing injuries, four leg injuries, three eye injuries and five unspecified injuries. Our results suggest that discarded fishing lines, fishhooks and plastic contamination are the main causes of injuries to the species. For the local population, we recorded 12 breeding pairs of this species in Junwu Forest Park, Guangxi, China. However, our data showed a persistent decline in the number of adult individuals, nests and nestlings. The fragmented distribution pattern, combined with the threats it faces, means that, even if more and more of its distribution sites are detected, if adequate protective measures are not taken, its population may still face the danger of local extinction and further reduction. Our study highlights the role of social media data in assessing the population size and distribution of endangered species. From the perspective of species conservation, long-term monitoring programmes should be established in multiple sites across the species' range to provide a comprehensive understanding of population size trends and the effectiveness of conservation efforts.

中国白耳夜鹭新分布点及种群趋势。
白耳夜鹭(Gorsachiusmagnificus)是一种濒临灭绝的物种,在其破碎的栖息地中,人类活动和生态变化对其的威胁越来越大。本研究结合近十年的新闻数据(2015-2024年)和系统的野外监测(2013-2024年),对中国的物种分布、当地种群趋势和保护挑战进行了评估。我们对36份经核实的新报告进行了分析,发现在11个省份有14个新的分销点。此外,有17起白耳夜鹭受伤的报告,包括5起翅膀受伤,4起腿部受伤,3起眼睛受伤和5起未指明的受伤。我们的研究结果表明,废弃的鱼线、鱼钩和塑料污染是造成该物种伤害的主要原因。本研究在广西军武森林公园共记录到12对繁殖对。然而,我们的数据显示,成年个体、巢穴和雏鸟的数量持续下降。这种分散的分布格局,再加上它所面临的威胁,意味着即使越来越多的分布地点被发现,如果不采取适当的保护措施,其种群仍可能面临局部灭绝和进一步减少的危险。我们的研究强调了社交媒体数据在评估濒危物种的种群规模和分布方面的作用。从物种保育的角度来看,应在物种分布范围内的多个地点建立长期监测计划,以全面了解种群规模趋势和保育工作的成效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Biodiversity Data Journal
Biodiversity Data Journal Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
2.20
自引率
7.70%
发文量
283
审稿时长
6 weeks
期刊介绍: Biodiversity Data Journal (BDJ) is a community peer-reviewed, open-access, comprehensive online platform, designed to accelerate publishing, dissemination and sharing of biodiversity-related data of any kind. All structural elements of the articles – text, morphological descriptions, occurrences, data tables, etc. – will be treated and stored as DATA, in accordance with the Data Publishing Policies and Guidelines of Pensoft Publishers. The journal will publish papers in biodiversity science containing taxonomic, floristic/faunistic, morphological, genomic, phylogenetic, ecological or environmental data on any taxon of any geological age from any part of the world with no lower or upper limit to manuscript size.
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