|于超,周立志,宋昀微.人为干扰对越冬后期稻田中小天鹅(Cygnus columbianus)昼间能量消耗的影响.湖泊科学,2019,31(1):195-201. DOI:10.18307/2019.0118
|YU Chao,ZHOU Lizhi,SONG Yunwei.The effects of human activities on diurnal energy expenditure of Tundra Swan Cygnus columbianus foraging in paddy field during the late wintering period. J. Lake Sci.2019,31(1):195-201. DOI:10.18307/2019.0118
|关键词: 越冬小天鹅 干扰 行为时间分配 能量消耗 升金湖
|The effects of human activities on diurnal energy expenditure of Tundra Swan Cygnus columbianus foraging in paddy field during the late wintering period
YU Chao1,2, ZHOU Lizhi1,2, SONG Yunwei3
1.School of Resources and Environmental Engineering, Anhui University, Hefei 230601, P. R. China;2.Institute of Biodiversity and Wetland Ecology, Anhui University, Hefei 230601, P. R. China;3.Shengjin Lake National Nature Reserve of Anhui Province, Chizhou 247200, P. R. China
|Energy expenditure strategy of birds that suffered human disturbance is interesting because it affects birds' fitness, which is influenced by daily activities budget and habitats characteristics of birds involve in. It is important to migratory waterbirds inhabited in paddy field accommodate energy configuration response to risks from human disturbance as this kind of habitat is increasing important for waterbirds over the world. To better understand the energy expenditure in disturbance environmental conditions, here, using Tundra Swan Cygnus columbianus wintering in a paddy field of Shengjin Lake, China, we employed a focal sampling approach to record their responses and calculatee the diurnal energy expenditure (DEE). The percent of time being vigilant and it's energetic cost, a vigilance bout and frequency, swimming frequency under disturbed situation were significant longer than those under the undisturbed situation. The energetic costs of alert increased with the interference time and decreased with interference distance adversely. Due to disturbance reduced high-cost feeding and increased low-cost alerting, the DEE of swans under disturbed situation was less than that under undisturbed situation.
|Key words: Wintering swans disturbance behavioral budgets diurnal energy expenditure budgets Shengjin Lake