BIOL 2903 Lecture 21: Lecture 21 – Natural History
15 Apr 2017
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Lecture 21: natural history oak savannah & Oak savannah: savannah is tallgrass prairie with 10-35% tree cover, most of these tending to be oak. In this forest region white pine is present. One of the most endangered ecological communities in north america. White oak: southern tree in the lowlands. Black oak: rare oak in the oak savannah there is a preserved part black oak. Prairie species are present there; prairie buttercup and lupines. Oak savannah depends on fire (fire driven habitat) if there was no fire trees would dominate the area. They do controlled burns to restore the habitat. The great lakes st. lawrence forest region is the only region occurring on 2 physiographic regions. The great lakes st. lawrence is divided into two (ottawa. St. lawrence lowland [higher part] and the great lakes lowland [southern part]) by the frontenac arch. Invasive species: dog-strangling vine -- spreading very quickly and dominating the area and killing native species.
