BIO-1 Lecture Notes - Lecture 30: Pedogenesis, Chelation, Hydrophile
Document Summary
Able to absorb water from rain, runoff, and dew. Highly efficient at absorbing water vapor from the air, so much so that at high. Thallus completely saturated within 1 2 minutes if immersed in water humidity levels, algae photosynthesize at nearly maximum rate. Able to survive extended periods of desiccation. Rewetting of lichens is thought to start by water absorption in gelatinous matrix of cortex. After which water might move through medulla in the wall space of the fungal hyphae. Hyphae embedded and stuck together in hydrophilic matrix. When wet, upper cortex transmits light to underlying photobiont in a layer on its inner side. Loosely interwoven filamentous hyphae with layers of hydrophobins coating walls. Hydrophobins ensure that medulla around the photosynthetic cells does not become waterlogged. Allows continued diffusion of gaseous carbon dioxide for photosynthesis. Mycobiont minerals like magnesium, manganese, iron, aluminum, and silicon. Directly or indirectly induces chemical weathering leading to the mobilisation of.
