54.1 The Scale of Ecology

54.1 The Scale of Ecology

• This chapter talks about ecol ogy.

• Chapter 55 is about this topic.

• There are two subdisciplines.

• There is a reason for the success of such species.

• We will look at the effect of inva on native species in Chapter 59.
• Callaway enemies are mostly insects that occur in the country of origin and Aschehoug collected seeds of three native Montana grasses in the new locale to test their hypothesis.

• Plants from Eurasia were secreting allelochemicals from their roots to out compete native Montana grasses.

• Three months after sowing seeds, the C. diffusa reduces the harvest of plants.

• Three months have passed since grasses native to Eurasia were introduced.

• At the top of each graph.

• The growth of native plants in the U.S. is hampered by the allelochemicals produced by Centaurea diffusa.

• Plants that are not native to the area versus plants that are new to the area.

• The experiments were repeated with grasses.

• Briefly describe the evidence collected to support the outcompetes Montana grasses.

• The chemicals that C. diffusa and native grasses release can be attributed to what else could have been measured.