Wambo Coal AEMR 2010-2011 - Peabody Energy

• In 2007 all quadrats recorded increases in the number of species present, many werelarge increases of more than 15 species;• In 2008 most quadrats recorded decreases in the number of species present, many ofwhich were large decreases of more than 15 species;• In 2009 some large reductions in the number of species were recorded however,most showed moderate to minor fluctuations in the number of species present;• In 2010 a few quadrats recorded moderate reductions in the number of specieshowever, most showed moderate to minor fluctuations in the number of speciespresent;2.2.3 Introduced Species Percentage Composition• In 2010:» The percentage composition of introduced species within quadrats rangedbetween three and 68 percent (see Appendix A [Figure 2]);» Three vegetation communities recorded more than 25 percent introduced speciesin all quadrats. The three communities were:• River Oak / Rough-barked Apple Forest;• River Red Gum Woodland; and• Yellow Box / Blakely’s Red Gum / Rough-barked Apple Forest.» All other vegetation communities in 2010 recorded less than 25 percentintroduced species and most recorded less than 12 percent; and» The change in the percentage composition of introduced species in 2010 rangedfrom a reduction of 17 percent to an increase of 30 percent.• The percentage composition of introduced species within quadrats has ranged fromtwo (one species) to 68 percent (24 species) per quadrat across the five years ofsampling;• From 2007 to 2010 the change in the percentage composition of introduced specieswithin quadrats has ranged between a reduction of 14 percent and an increase of 19percent (see Appendix A [Table 4]);• The overall average change in the percentage composition of introduced species pervegetation community since 2006 has ranged from a decrease of seven percent to anincrease of 11 percent per vegetation community;• In 2007 most quadrats recorded an increase in the percentage composition ofintroduced species;• In 2008 all quadrats recorded minor changes in the percentage composition ofintroduced species, except quadrats within the River Oak / Rough-barked AppleForest community where four of the five quadrats recorded moderate to largedecreases;• In 2009 the change in the percentage composition of introduced species wasrelatively variable ranging from a decrease of 19 percent to an increase of 17 percent2010 Annual Ecological Monitoring Report, Draft Report, January 2011 Page 7