Polar Desert Research Center and Department of Biological Science, Florida State University, 32306-2043, Tallahassee, Florida, USA.
Microb Ecol. 1988 Nov;16(3):271-89. doi: 10.1007/BF02011700.
The vertical zonation of the Antarctic cryptoendolithic community appears to form in response to the light regime in the habitat. However, because of the structure of the habitat, the light regime is difficult to study directly. Therefore, a mathematical model of the light regime was constructed, which was used to estimate the total photon flux in different zones of the community. Maximum fluxes range from about 150μm photons m(-2) s(-1) at the upper boundary of the community to about 0.1μm photons m(-2) s(-1). Estimates of the annual productivity in the community indicate that the lowest zone of the community is light limited, with the maximal annual carbon uptake equivalent to less than the carbon content of one algal (Hemichloris) cell.
南极隐花植物群落的垂直分带似乎是对生境中的光照条件做出的响应。然而，由于生境的结构，光照条件很难直接进行研究。因此，构建了一个光照模型，用于估算群落不同区域的总光通量。最大光通量范围从群落上层边界处的约 150μm 光子 m(-2) s(-1)到约 0.1μm 光子 m(-2) s(-1)。对群落中年度生产力的估计表明，群落的最低区域受到光照限制，最大的年度碳吸收量相当于不到一个藻类（Hemichloris）细胞的碳含量。
