Human Impacts on Ecosystems Adapted from:https://www.arkive.org/education/teaching-resources-11-14 What are some of the greatest threats to biodiversity? Often as a direct result of human activity. Some of the most common threats include: Habitat loss Hunting and poaching Invasive species
Climate change Collection and the pet trade Golden-crowned sifaka Case Study: The Power of Plastic Why is plastic such a problem? Around 275,000 tonnes of plastic are used each year in the UK alone. Thats about 15 million bottles per day. Globally, we make around 265 million tonnes of plastic each year.
Plastic (generally) isnt biodegradable and can take up to 500 years to decompose. White stork The Great Pacific Garbage Patch Waste has become trapped by rotating ocean currents Thought to cover an area around twice the size of France Plastic varies in size from household objects to tiny particles
Estimates suggest that in this area, plastic particles outnumber plankton 6:1 Not only affecting species at sea, also washing ashore. American coot How is this affecting species? Example: Green turtle Currently considered an Endangered species Doesnt start to reproduce until 26 to 40
years of age Returns to breed only once every two to five years The female hauls out onto the beach at night and digs a large nest with the back Green turtle Typical nesting habitat should look like this: But is increasingly looking more like this:
Watch and Discuss Video: Hawaii: Message in the Waves After watching the video brainstorm what kinds of data scientists could take to measure human impact on the albatross population. Measuring impacts For scientists working in conservation, being able to measure and quantify our human impact on the environment is really important. For the plastic waste example, you could
measure: Number of chicks successfully fledging (leaving the nest) each season. Chick mortality rates how many die each season? Total population size trend is the population getting larger or smaller? Quantity of plastic inside the albatross boluses. Laysan albatross bolus (above) and chick (below)
What can we do? Help clean up participate in a litter pick or beach clean up Reduce your use of plastic products Reuse plastic bags and other plastic products where possible Dispose of your plastic waste properly, always recycle where possible REDUCE, REUSE, RECYCLE! Your Task Choose a different human impact topic (not plastics) and pick a species
affected by it which you would like to research. Using ARKive and other web resources, find as much information as you can about how your chosen species is affected by human impacts on the environment. Write an expository news story or documentary short film introducing your species, explaining why it is threatened and describing how you could measure the impact humans are having on this species. Illustrate your presentation using photographs and films from the ARKive website. Possible Topics Habitat loss and deforestation
Hunting and poaching Invasive species Kakapo Black rhinoceros Golden-crowned sifaka Climate change
5.3.2 Draw and label a graph showing a sigmoid (S-shaped) population growth curve. a) Exponential Phase of rapid population growth rate. b) Transition stage: A slowing yet still high growth rate against time or generations. c) Plateau stage in which...
SOLVING RIGHT TRIANGLES Using your definitions to solve "real world" problems. What does it mean to solve a right triangle? Solving a right triangle means to find all the unknown parts. You are usually given one side of a right...
SAU OPT STEM Extension Mailing Instructions. This PowerPoint provides simple instructions to mail your OPT STEM Extension packet to USCIS. Introduction. This PowerPoint will explain how to mail your OPT documents to USCIS. Pictures will accompany where examples will be...
The latest slogan/rebranding of Vodacom - ' Kazi. ni. kwako ' ... Banks-maintain CASH FLOAT for agents, transfer of money between bank account and MM account. The Central Banks in both UG and TZ do not issue payment or e-money...
* - "This makes sense to me." With your group, discuss questions and highlight key ideas in this standard. Write unanswered questions on a post-it note for the facilitator to collect at the end of the session. Students can apply...
El pretérito y el imperfecto. There are several distinctions between the preterite and imperfect tenses. Over the next few days, we are going to do a review of both tenses to give us confidence in our conjugations, and then move...
Earnings, Productivity, and the Job Market. Click to edit Master title style. To Accompany: "Economics: Private and Public Choice, 15th ed." James Gwartney, Richard Stroup, Russell Sobel, & David Macpherson
BEFORE YOU START. Make sure you have writtenyour table/group number on everyanswersheet. Write the number of each round 1-8 on everyanswersheet. The answer to all questions in this quiz issimply 'True' or 'False'
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