Biological Soil Crust is a fascinating occurrence in nature. This thin layer of microorganisms that can be as small as 1 millimeter of soil clumps dirt together can influence a whole ecosystem. There are some interesting facts about biological that are worth a read, let’s see some of them.
Crusts cover all areas that are not occupied by vascular plants. In deserts, this can be as much as 70% of all its surface.
Cyanobacteria can be either on or under the soil surface.
Even though cyanobacteria is the main component of biological crusts and the one that feeds the soil and boosts carbon cycles with photosynthesis and respiration processes, it is not the only one. Algae, microfungi, mosses, and lichens are all part of the crust. The proportions among these living organisms change based on location and influence the whole system around them.
Areas with steep slopes and dunes that are prone to slipping can be held in place by the crust. Their texture and roughness can also keep thin and shallow soils from moving.
5) Water infiltration
Deserts are very dry areas, and even when they receive some moisture they are likely to lose it since the soil can’t keep it. Biological crusts can change that entirely, and their rough surface slows down the water income, increasing contact time and chances of absorption.
Biological soil crusts grow at a rate of 1 millimeter per year. Considering how big of a difference they make on deserts with only 1 millimeter, this is a positive and beneficial rate.
Deserts of all types are apt to the growth of biological crust, from hot deserts to polar regions.
New and young crusts are almost indistinguishable from the soil and are usually flat. More mature crusts have a darker color and a rough, bumpy texture that makes them very visible.
Addition to this, we have also compiled some guides on gardening tools and lawn care tools.