Warmup How can biodiversity be measured Why is

Warmup �How can biodiversity be measured? �Why is maintaining biodiversity important? (Relate to changes in the environment…)

Effect of Humans on the Biosphere 2. 7. 3 A EXPLAIN EFFECTS OF HUMAN POPULATION GROWTH, HABITAT ALTERATION, INTRODUCTION OF INVASIVE SPECIES, POLLUTION, AND OVERHARVESTING ON VARIOUS PLANT AND ANIMAL SPECIES IN NC. 2. 7. 3 B EXPLAIN EFFECTS OF INVASIVE NONNATIVE SPECIES (PLANT OR ANIMAL) ON AN NC ECOSYSTEM.

Habitat Alteration �As the human population grows, habitats are altered

Overharvesting �Overharvesting is the catching or removing from a population more organisms than the population can replace

Overharvesting: Plants �Long leaf pine and white cedar forests were decimated in our state for the lumber industry.

Overharvesting: Animals �Market hunting (commercial hunting) at the turn of the century exploited natural resources for profit. �For instance, beaver were completely exterpated from the state, river otters were no where to be found in the western part of our state, it's estimated that only 10, 000 deer were left, very few wild turkey were left, and black bear were found only in the deepest mountain valleys or thickets in Pocosins near the coast.

Overharvesting: Animals �Then game laws were enacted to protect our game animals from over hunting by creating hunting seasons and limits. � Black bear and white tailed deer have rebounded naturally, while river otter, beaver, and wild turkey were brought in from other states to repopulate areas of our state.

Invasive Species �Native species Organisms that naturally live in a certain area. Evolved in that area over time Typically co-evolved with other species that keep its population in check through predation, competition or disease. �Non-native species (exotic or alien species) Organisms introduced or moved to an area by humans where they don’t naturally occur. Not necessarily harmful… Harmful ones are called invasive species � Outcompete native species in a natural community or cause ecological or economic problems � No natural controls to limit their population � Typically have a high rate of reproduction and tolerate a large variety of conditions � Take over!

Extra Credit: Invasive or Biodiversity App �What app did you use? �How did you use it? What was the interface �How well worked? �Who you think it was made for? �How you think it could be made better? Be descriptive!!!

Invasive Species �Describe the species (picture) �Where did it come from? (map) �Where is it now? �How did it get here? (Think why) �Why do we care? (What problems does it cause? )