The rate of plant growth on an island near Isle Royale is such that the carrying capacity of moose on the island is 450. Currently there are 450 moose present. The environment is stable and free of wolves. One day, 200 additional moose arrive on the island. What is the expected number of moose on the island 30 years later, assuming conditions do not change?

1.) At approximately what year did the human population enter an exponential growth phase? 2.) Prior to that time, what was the approximate carrying capacity of Earth? 3.) State three significant technological developments that have acted to increase the carrying capacity of Earth’s environment since that time. 4.) Provide two examples of density-dependent factors that are contributing to or have the potential to contribute to environmental resistance in human populations.

Flowering rush (Butomus umbellatus) is a pink flowering perennial that has been identified as a prohibited noxious weed in Alberta. It is native to Europe, Africa, and Asia, but due to its prolific growth rate on shorelines, it has been crowding out the native species of Alberta. The following table shows the population growth of flowering rush in Chestermere Lake of Calgary. Year Population (N) 2007 10 2008 7 2009 8 2010 22 2011 46 2012 77 2013 158 2014 319 2015 297 2016 355 2017 334 2018 313 2019 291 Chestermere Lake has an area of 2.65 square km and an average depth of 2 m.   a) The growth rate of the flowering rush population above from 2009 to 2016 was B) The per capita growth rate of the flowering rush population above from 2009 to 2016 was c) Show your work in calculating the population density of flowering rush in Chestermere Lake in 2016.

A group of golden lion tamarins were released into their natural habitat but most did not survive. The researchers found most were very underweight, presumably due to a lack of food availability. Using the information provided above, What is a possible solution to this human impact problem before releasing more tamarins into this habitat?