Wang Qingxiong, Yang Chao, Hu Defu, Xiao Hong, Zhang Dong
College of Nature Conservation, Beijing Forestry University, Beijing 100083, China.
Shaanxi Institute of Zoology, Xi'an 710032, China.
Animals (Basel). 2022 Apr 15;12(8):1035. doi: 10.3390/ani12081035.
Hongjian Nur is an important breeding and stopover area for the globally endangered Relict gull (). This is where the species was first found in 2000. The breeding population of this species was monitored over the long term by directly counting nests from 2001 to 2020 in Hongjian Nur, Shaanxi, China. Our results suggest that breeding pairs increased rapidly, from 87 nests in 2001 to 7708 nests in 2010; at this point, the breeding population accounted for more than 85% of the global total, and was at the highest value during the past two decades. Subsequently, breeding pairs continued to decrease dramatically and reached a minimum number of 2054 nests in 2015, approximately 70% less than at their peak. In view of this situation, breeding islets were restored in 2014 and 2017, and the breeding population recovered slowly. Due to the changing ecological environment, breeding islets showed the same instability as the breeding population. Our conclusions support previous research, highlighting the importance of water level.
红碱淖是全球濒危遗鸥重要的繁殖和中途停歇地。2000年该物种首次在此被发现。2001年至2020年期间，在中国陕西省红碱淖通过直接计数巢穴对该物种的繁殖种群进行了长期监测。我们的结果表明，繁殖对数量迅速增加，从2001年的87个巢穴增加到2010年的7708个巢穴；此时，繁殖种群占全球总数的85%以上，且处于过去二十年中的最高值。随后，繁殖对数量继续急剧下降，2015年降至最低的2054个巢穴，比峰值时减少了约70%。鉴于这种情况，2014年和2017年恢复了繁殖小岛，繁殖种群缓慢恢复。由于生态环境不断变化，繁殖小岛与繁殖种群一样呈现出不稳定状态。我们的结论支持先前的研究，突出了水位的重要性。
