Trophic Mismatch and Its Consequences for Dynamics of an Arctic Herbivore

营养不匹配及其对北极草食动物动态的影响

• 批准号: 0713994
• 负责人: Eric Post
• 金额: $ 19.51万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0713994&HistoricalAwards=false
• 关键词: Trophic; Mismatch; Its; Consequences; Dynamics

Scientists from Pennsylvania State University and the University of California Santa Cruz have been funded to investigate the phenomenon of trophic mismatch in the relationship between caribou and their plant food. The timing of key life history events is matched to the seasonal timing of food availability and quality in the Arctic. As the timing of plant emergence and growth shifts in response to climate change, the seasonal cycle of caribou - constrained by other seasonal events - will be challenged. The investigation of such seasonal dynamics in caribou ecology will be broadly applicable to other components of the Arctic biota. The timing of calving will be investigated in Greenland in a site near Kangerlussuaq where the PI has a long term record of caribou calving and plant growth. The consequences of mismatch will be explored in population models.

来自宾夕法尼亚州立大学和加州大学圣克鲁斯的科学家们得到了资助，他们调查了驯鹿和它们的植物食物之间关系中的营养不匹配现象。关键生活史事件的时间与北极食物供应和质量的季节性时间相匹配。随着植物出现和生长的时间因气候变化而发生变化，驯鹿的季节性周期-受其他季节性事件的限制-将受到挑战。对驯鹿生态中这种季节性动态的调查将广泛适用于北极生物群的其他组成部分。将在格陵兰Kangerlussuaq附近的一个研究中心研究产犊时间，PI在该研究中心有驯鹿产犊和植物生长的长期记录。将在人口模型中探讨不匹配的后果。