Energy Availability and Density Estimates in African Ungulates
Energy Availability and Density Estimates in African Ungulates
复制标题
非洲有蹄类动物的能源可用性和密度估计
作者：
N. Pettorelli;J. Bro;S. Durant;T. Blackburn;C. Carbone
虽然许多研究调查了初级生产力和物种丰富度之间的联系，初级生产力和物种丰富度之间的联系仍然知之甚少。我们探讨了基于卫星的归一化差异植被指数评估的初级生产力如何影响13种非洲有蹄类动物的密度估计。我们发现，初级生产力一般与密度估计呈正相关。然而，这种联系对某些鱼种比对其他鱼种更为明显，需要考虑到有关调查地区的信息，以突出这种功能关系。对大规模研究中生产力测量的详细考虑确定了初级生产力与非洲有蹄类动物丰度之间的一般联系，并强调遥感分析是评估该大陆初级生产力未来变化对人口影响的潜在关键工具。
While many studies have investigated the link between primary productivity and species richness, the link between primary productivity and species abundance is still poorly understood. We explored how primary productivity, assessed by the satellite‐based normalized difference vegetation index, influenced density estimates in 13 African ungulate species. We found that primary productivity generally correlated positively with density estimates. However, this link was more pronounced for some species than for others, and information regarding the area surveyed needed to be taken into account to highlight this functional relationship. Detailed consideration of measurements of productivity in broadscale studies identify a general link between primary productivity and abundance of African ungulates and highlight remote‐sensing‐based analyses as a potentially crucial tool in assessing the population consequences of future changes in primary productivity on this continent.