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Published byRachel Perkins
Modified over 4 years ago
Invasive species Coming soon to an ecosystem near you!
The Tens Rule 10% of introduced species escape 10% of escaped species become established 10% of established species become invasive
The Tens Rule 10% of introduced species escape 10% of escaped species become established 10% of established species become invasive 0.1% of species introduced become invasive
Exceptions Ornamental trees and shrubs Plantation species Crop plants, biocontrol agents
Disturbance How can disturbance facilitate invasion?
Disturbance How can disturbance facilitate invasion? reduce competition increase resource availability
difficulty of detection exponential population growth post-invasion evolution (local adaptation) increased availability of favorable sites
Rare Species Narrow Geographic Range Small Population SizeHabitat Specificity
Invasive Species Broad Geographic Range Large Population SizeWide Range of Habitats
Rapid dispersal:short generation time long reproductive period prolific seed production successful dispersal successful establishment
Lots of seeds! multiflora rose Japanese barberry Oriental bittersweet
Long fruiting period glossy buckthorn
Successful seedling establishment Common buckthorn (Rhamnus cathartica)
2% sun28% sun100% sun Ellsworth, Harrington & Fownes (2004) 4.5 m in 12 weeks!
Impacts Reduced population size and biodiversity of native species Invasive species are the second major cause of extinctions globally (main cause on islands)
Pale swallowwort Cynanchum rossicum
Introduced mosquitoes spread avian malaria
Difficult to eradicate
SFR 107 Lab #6 October 8-9, 2013 Flashcards for invasive species in Central Maine and miscellaneous other plants.
Population Distribution and Abundance (Chapter 9) Introduction
Ecological Aspects of Pest Management Ecosystem Concept.
HOW INTRODUCED SPECIES AFFECT ECOSYSTEMS Introduced Species.
Populations What influences how populations flourish or die out?
Invasive Species An introduction. What is a native species? Native species are those that normally live and thrive in a particular community. They occupy.
Terminology The scope of the problem Economic impacts Questions, hypotheses, examples.
Evolution of Biodiversity Readings Evolution
Goats as Grazing Animals for Invasive Plant Management Bill Jacobs, Kathy Schwager, Marilyn Jordan: The Nature Conservancy Karen Kazel: Suffolk.
Introduced and Invasive Species
Welcome to Ridley Creek State Park Invasive Plants Workshop
Extirpating an Exotic Invasive from the Ecosystem Preserve
The Purple Menace Biological Control of Purple Loosestrife (Lythrum salicaria) By Ann Widmer.
Chapter 16 Parasitism and Mutualism types, modes of transmission coevolutionary relationships population regulation.
10/19/071 Biodiversity at local scales Reading assignment: GSF Ch. 13.
What’s wrong with planting non-native plants in an urban setting? Why do ecologists argue for native landscaping?
SSL is a MD graduation requirement: 75 hours to earn your diploma SSL is composed of 3 steps: 1. Preparation: what are you doing and why is it necessary?
Exotic Species: A species that is non native to the area. Invasive Species. An exotic species that dominates an ecosystem reducing the biodiversity.
Invasive Species Introduce the session - today we are going to look at invasive species. We will talk about: What an invasive species is, and how it differs.
Invasive Species A project about Invasive species By: Alex Ryan.
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