Reproductive Status and Population Size of Wild Crested Ibis (Nipponia nippon) in China

被引：0
|
作者：
Wang C. [1 ]
Zhang Y. [1 ]
Zeng J. [1 ]
Gao J. [1 ]
Yan L. [1 ]
Liu D. [2 ]
机构：
[1] Shaanxi Hanzhong Crested Ibis National Nature Reserve, Hanzhong
[2] Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing
来源：
Linye Kexue/Scientia Silvae Sinicae | 2020年 / 56卷 / 11期
关键词：
Breeding productivity; Crested Ibis; Environment capacity; Nocturnal roost; Simultaneous count;
D O I：
10.11707/j.1001-7488.20201115
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
Objective: This study aimed to understand the reproductive traits and estimate the current population size of the endangered Crested Ibis (Nipponia nippon), so as to provide a scientific basis for the population status assessment and efficient conservation and management. Method: We investigated the nest sites of wild Crested Ibis in Yangxian and the surrounding area of Shaanxi Province and the environmental factors and reproductive parameters of each nest from March to June, 2019, and analyzed the nesting success and breeding productivity. Meanwhile, a simultaneous survey at the nocturnal roosts was conducted in September 2019, to investigate the population size and age structure. According to nest-site density, a fixed Kernel method in ArcView GIS 3.3 was used to estimate the distribution and area of three different nesting ranges, and Crosstabs and ANOVA in SPSS 22.0 were used to compare the differences of reproductive traits. Result: A total of 449 nest sites were recorded in 2019, which mainly distributed in Yangxian (66.8%) and Chenggu (29.0%). Based on Fixed Kernel estimation, the size of core nesting range and regular nesting range of Crested Ibis were 244.1 km2 and 1 523.7 km2, respectively, with the nesting density in core range of 0.73 nests•km-2, which was much higher than that in regular range with 0.16 nests•km-2. The nesting success rate averaged 66.4%, and it increased from core range, regular nest range to peripheral nest range, and the difference was significant among the three nesting ranges. The breeding productivity averaged 2.05, and it was significantly higher in peripheral nesting range than that in the other two nesting ranges. A total of 19 species of nesting trees were recorded, dominated by Pinus spp. (30.2%), Ulmus pumila (28.6%) and Populus davidiana (26.6%). There was no significant difference of nesting success among the three tree species, but the breeding productivity in Pinus spp. was significantly higher than that in the other two species. A total of 2 571 individuals were recorded in 38 nocturnal roosts, among which Yangxian and Chenggu counties accounted for 73.7% and 15.8% of the total roosts, respectively, and 73.0% and 23.4% of the total number of birds, respectively. The fledglings accounted for 11.6% of the total population. Conclusion: The wild population of Crested Ibis is increasing steadily, and the most of the nest sites and nocturnal roosts are still distributed in Yangxian and Chenggu. However, the population growth in the core nesting range may have been experiencing the suppression from the environment capacity, and consequently the population is accelerating its dispersal outside. The age structure of wild population is changing, which will have impact on the population growth rate. It is crucial to facilitate the habitat restoration in the core ranging and efficient management of peripheral population. © 2020, Editorial Department of Scientia Silvae Sinicae. All right reserved.
引用
收藏
页码：143 / 150
页数：7
相关论文
共 23 条
  • [1] Chen W G, Li X, Liu C, Et al., Status of a reintroduced population of the Crested Ibis (Nipponia nippon) in Ningshan County of Shaanxi Province, Chinese Journal of Wildlife, 34, 1, pp. 23-24, (2013)
  • [2] Ding C Q., Research on the Crested Ibis, (2004)
  • [3] Ding C Q, Zhai T Q, Lu B Z, Et al., The new breeding site of the Crested Ibis (Nipponia nippon), Acta Zoologica Sinica, 45, 3, (1999)
  • [4] Hou Y X, Zhou L Z, Yang C, Et al., Disturbance to the Oriental White Stork (Ciconia boyciana) breeding in the wintering area, Zoological Research, 28, 4, pp. 344-352, (2007)
  • [5] Huang Z X, Zhu J G, Wang K, Et al., A preliminary report on the distribution and breeding of reintroduced Crested Ibis in Dongzhai of Henan Province, Bulletin of Biology, 51, 10, pp. 53-56, (2016)
  • [6] Liu D P, Ding C Q, Chu G Z., Home range and habitat utilization of the Crested Ibis in the breeding period, Acta Zoologica Sinica, 49, 6, pp. 755-763, (2003)
  • [7] Liu D P, Ding C Q, Chu G Z., Potential breeding sites of Crested Ibis Nipponia nippon, Acta Zoologica Sinica, 52, 1, pp. 11-20, (2006)
  • [8] Liu D P, Lu B Z, Zhang G G., Captive reared Crested Ibis bred successfully after release to the wild, Chinese Journal of Zoology, 42, 3, (2007)
  • [9] Liu D P, Wang C, Qing B P, Et al., Thirty-year's conservation of Crested Ibis Nipponia nippon in China: a model for community-based conservation of animal species with extremely small population, Sichuan Journal of Zoology, 33, 4, pp. 612-619, (2014)
  • [10] Liu Y Z., Re-discovery of Japanese Crested Ibis in Qinling Range, Acta Zoologica Sinica, 27, 3, (1981)
123