we hypothesise that there will have been situations, e.g., during the Neolithic period and modern industrialization, where the change in culture, environment and reproductive patterns on human survival would have been of sufficient magnitude that the species survivorship curve shifted...
the presence of 2-stroke noise but recovered to pre-noise levels after 20 min of continuous motorboat noise. It is unclear why the time frames of habituation to noise are so different between these studies, but it may be due to factors including the artificiality of experiments, species-...
Fig. 1 Survivorship curve of the Ferrocalamus strictus popu- lation. 但是从3年生进入到4–5年生的机会比较少.出现此 种现象可能与铁竹的死亡原因有关. 3.2.3 铁竹种群生殖力 生殖力表(表4)分析结果显示, 铁竹种群的净增 殖率(R0)为1.10, R0 > 1, 表明铁竹种群为增长型(按 发笋率计算).内禀...
Type II survivorship curve
Organisms that follow the Type I survivorship curve are characterized by having a low death rate (or high survivorship rate) over much of their lives. As they approach the limits of their natural life expectancies, however, there is a dramatic increase in the death rate. Species such as ...