...and in Town
Urban Species and Artificial Substrates
Lichens and bryophytes are most abundant and diverse in relatively unpolluted areas, but that doesnt mean they are absent from urban areas. However the more polluted the city, the fewer lichens and bryophytes youll find there.
The moss Bryum argenteum growing on Anzac Parade in Canberra. |
A street sign from Christmas Island in the Indian Ocean decorated with Usnea, a fruticose lichen. |
As well as growing on rocks, plants and soil, lichens and bryophytes also grow on artificial surfaces as diverse as bricks, tiles, metal, glass and bones. While some will grow on a range of surfaces in a variety of habitats, others have very specific requirements. For example, the lichens you find on concrete roof tiles you will also find growing naturally on limy soils or rocks. To such lichens limy concrete is no different from limestone. Similarly, quartz and glass are chemically very similar, so quartz-loving lichens will have no problems taking up residence on glass bottles.
A lichen-covered Morris Minor from the south island of New Zealand. |
Q. Is the moss killing my lawn? A. No. If you have a lot of moss but a poor lawn, then its because the general conditions are not good for a lawn perhaps too dry, too wet or too shaded. If you have a good growth of moss in your lawn, its simply because you have created the right conditions for the moss. You can often find thick moss growth in lush, over-watered lawns. The lighter green areas in these pictures is a moss in the genus Sematophyllum which grows very well in lush, well-watered lawns. |