invasive species in hawaii l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Invasive Species in Hawaii PowerPoint Presentation
Download Presentation
Invasive Species in Hawaii

Loading in 2 Seconds...

play fullscreen
1 / 21

Invasive Species in Hawaii - PowerPoint PPT Presentation


  • 217 Views
  • Uploaded on

Invasive Species in Hawaii. What can Gardeners & Community Gardens do to Help stem the tide of invasion. Presented by: Patti Clifford Weed Risk Assessment Specialist Hawaii Invasive Species Council. NASA .

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Invasive Species in Hawaii' - traugott


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
invasive species in hawaii

Invasive Species in Hawaii

What can

Gardeners &

Community Gardens do to Help stem the tide of invasion

Presented by:

Patti Clifford

Weed Risk Assessment Specialist

Hawaii Invasive Species Council

slide2

NASA

The Hawaiian islands are the most geographically isolated island chain on Earth. This isolation has limited plants, animals, humans, and diseases from reaching Hawaii.

slide3

TNC

To get to Hawaii and establish a population requires adaptability.

slide4

Hawaii's First Arrivals

Seed, Spores and Insects arrived on the Wind.

Birds love islands. They transport seeds internally and attached to their feathers.

Ocean currents carry: Seeds, Fish, Invertebrates, Algae.

TNC photo

TNC photo

slide5

CGAPS

The plants and animals that arrived came from all over.

slide6

Why are Hawaii’s Native Species Impacted by Invasive Species?

Hawaii’s native ecosystems are the result of 70 million years of isolation and very slow change.

The Hawaiian island chain was never attached to a continent or close to any island.

Chad Yoshinaga/NOAA

what is an invasive species

What is an Invasive Species?

An invasive species is a species that is non-native or exotic to the local or regional ecosystem and whose introduction does or potentially can cause economic or environmental harm or harm to human health.

the invasion process

The Invasion Process

The Invasion Process can be described as a series of stages.

Transport

Introduction

Establishment

Spread

Impact

Ecological, Economic, Human Health

slide12

Invasive Plants in Hawaii’s Natural Areas

Purposeful introductions 91%

Crop/other use 56 52%

Ornamental 41 39%

Accidental

introductions 10 9%

Smith, C. W. 1985

  • The plants that pose the greatest threats are ones that we brought in on purpose.
coqui frogs eleutherodactylus coqui

Coqui FrogsEleutherodactylus coqui

• Native to Puerto Rico

• Can reach densities of 10,000 per acre, eat 40,000 insects a night

• Eat native insects

• Loud (70-90 decibels).

slide14

Little Fire Ant (LFA)

Wasmannia auropunctata

  • Small stinging ants native to Central and South America. Introduced as hitchhikers on nursery plants
  • Infests yards, agricultural fields, and nurseries.
  • Sting animal eyes, causing blindness
  • Infestations on the Big Island. One small infestation on Kaua‘i and Maui (recent).
  • Not on Oahu Yet!

Lori Oberhofer/USDA NRC

slide15

Invasive Vines

The Ivy Gourd (Coccinia grandis), a tropical vine.

Impacts: Smothers plants. Difficult to remove -tuberous root system. In Hawaii severe pest in gardens, on utility poles, roadsides, and in natural areas.

slide16

Invasive Nutsedge

Purple nutsedge (Cyperus rotundus) is considered to be one of the world’s worst weeds

Fast growing; difficult to eradicate because of tubers; agricultural, garden, natural area weed.

voluntary codes of conduct for gardeners

Voluntary Codes of Conduct for Gardeners

  • Ask for only non-invasive species when you acquire plants.
  • Seek information on which species are invasive in your area.
  • Remove invasive species from your land and replace them with non-invasive species suited to your site and needs.
  • Do not trade plants with other gardeners if you know they are species with invasive characteristics.
  • Request that botanical gardens and nurseries promote, display and sell only non-invasive species.
  • Help educate your community and other gardeners.
slide20

Learn more about the impact of invasive species in Hawaii.

Implement the Voluntary Codes of Conduct for Gardeners

Verify that plants in your garden are not invasive.

Spread the word not the weeds.

slide21

Let’s PlantPono :)

  • The PlantPono website will provide:
    • information on invasive plants and their impacts
    • information on non-invasive plants
    • access to the Hawaii-Pacific Weed Risk Assessments (>1,000 plants assessed)
  • www.plantpono.org