Modeling the Impact of Pollution and Predators on a Population of Northern Leopard Frogs - PowerPoint PPT Presentation

Loading...

PPT – Modeling the Impact of Pollution and Predators on a Population of Northern Leopard Frogs PowerPoint presentation | free to download - id: 6df79-ZTdhN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Modeling the Impact of Pollution and Predators on a Population of Northern Leopard Frogs

Description:

Turtles, snakes, lizards, birds. NORTHERN LEOPARD FROG. Life cycle of frog. ... 2 frogs/lizard/day. THE COMPLETED MODEL. POPULATIONS DURING A 1,400-DAY TRIAL ... – PowerPoint PPT presentation

Number of Views:97
Avg rating:3.0/5.0
Slides: 12
Provided by: robert354
Learn more at: http://shodor.org
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Modeling the Impact of Pollution and Predators on a Population of Northern Leopard Frogs


1
Modeling the Impact of Pollution and Predators on
a Population of Northern Leopard Frogs
  • By Kevin and Zack

2
NORTHERN LEOPARD FROG
Lakes, streams, ponds, and marshes. Green,
sometimes light brown. Mutated frogs,
Minnesota, 1995. Turtles, snakes, lizards,
birds.
Habitat range
3
A MATHEMATICAL REPRESENTATION
Life cycle of frog. Damage via pollution.
Predatory animals.
4
MODELING THE FROG LIFE CYCLE
Three stages. Lizards eat only adult
frogs. Pollution affects all frogs.
Eggs laid 4.1/day/adult Eggs hatching 12
days Tadpoles maturing 60 days Population
cap 400 for adults, 1250 overall
5
MORTALITY DUE TO POLLUTION
Pollution kills 4 tadpoles, eggs. 2 adult
frogs.
6
FROGS PREDATORS (LIZARDS)
Lizards live 4 years. Birth rate based on
food. 2 frogs/lizard/day.
7
THE COMPLETED MODEL
8
POPULATIONS DURING A 1,400-DAY TRIAL
Populations shoot up Lizards catch up
to frogs Equilibrium reached
9
FROG MORTALITIES BY CAUSE More deaths due
to pollution Lizards eat more, but only
adults Pollution affects all frogs
10
Conclusion Pollution affects a population of
frogs more than predators.
Are there any questions? No? Great!
11
Bibliography Dunn, Kyla, Freaky Frogs,
www.pbs.orgfrontline.online, 1998. Oregon State
University, Methroprene, www.ace.orst.edu/info/
extoxnet/pips/methroprene.htm, 1996 Three
Teachers Association, The Northern Leopard
Frog, www.alienexplorer.com/ecology/p146.html,
2000 Province of Nova Scotia, Northern Leopard
Frog, http//museum.gov.ns.ca/mnh/nature/frogs/n
orth.htm, 2000
About PowerShow.com