Oregon Zoo Foundation

The mission of the Oregon Zoo Foundation is to foster community pride and involvement in the Oregon Zoo and to secure financial support for zoo conservation, education and animal welfare programs. These programs advance the zoo's mission to inspire the community to respect animals and to take action on behalf of the natural world by creating engaging experiences and advancing the highest level of animal welfare, environmental literacy and conservation science.
May 2, 2013

Spring 2013 Update

I am pleased to report that all of last fall's western pond turtle hatchlings are thriving in the Conservation Lab at the Oregon Zoo. As always, visitors to the zoo's Cascades Stream & Pond building are invited to check on the turtles' progress and say "hello!"

Last fall, our multi-agency Western Pond Turtle Conservation Team (that also include representatives from the Woodland Park Zoo and Washington Department of Fish and Wildlife) conducted a Population Viability Analysis (PVA) and the final report is due imminently. We will share report findings with our GlobalGiving supporters when they become available. After some 22 years of raising and releasing turtles to supplement dwindling populations in the wild, field biologists have identified two key issues that need to be addressed: 1) a disappointingly low number of wild, juvenile turtles (presumable due to ongoing bullfrog predation), and 2) potential adult mortality due to shell disease.

Finding out the scale, seriousness and cause of shell disease is a high priority as it may be a source of adult mortality which is a key to population sustainability.  We will be working with Conservation Team partners this year to tackle the disease issue and will continue to collect juvenile turtles in the wild and head start them for release in the Columbia River Gorge. Our goal, as always, is a self-sustaining network of western pond turtles populations in Washington State. Turtles are an important component of wetland ecosystems and sensitive indicators of wetland integrity and health. Wetlands provide us with clean water, nutrient recycling, flood protection, and support abundant wildlife populations including salmon in the Columbia River.

Thank you again for your generous support of this important conservation effort and we hope to see you at the zoo!

Sincerely,

David

Jan 25, 2013

Winter 2013 Project Update

January 10, 2013

Greetings from Oregon Zoo's warm and bright Conservation Lab!

The group of 9-month old youngsters that WA game biologists delivered to us last spring is really getting big! You might remember that instead of collecting them right after hatching, field biologists allowed these hatchlings to spend their first winter as they naturally would - hiding in the mud and dirt in and around the ponds in the Columbia Gorge where they were hatched. When these young turtles began to emerge from their hiding places in early May, biologists collected them so that invasive bullfrogs and bass would not eat them.

These turtles were then brought to the safety of the Oregon Zoo Conservation Lab to grow. When they were caught these17 little guys were still about the same size as they were when they hatched (~5-10 grams), since they had not been eating during cold winter weather in the Gorge. If you stop by our Conservation Lab (inside our Cascade Stream and Pond exhibit building), you will see that these turtles have grown considerably!  Many already reaching over 100 grams! They will definitely be ready to release this year!

In September of 2012 these 17 were joined by 21 freshly hatched turtles that were quite a bit smaller at 5-10 grams. This brought our winter count to 38. The size difference between some of the May and September babies is obvious, as the May babies had plenty of food available to them all summer here in the lab. However we now have some overlap in size between the two groups.

So we now have 38 hatchlings in our four turtle pools in the Conservation Lab. The ones you see in the upper tubs are the smaller, more recent hatchlings and the ones in the lower tubs are the big guys that were collected last spring.

Who knows? By next May we could have more late starters joining us again and all of our present ones should be ready to release in July or August!

With your help, our turtle project continues to support the recovery of this imperiled species here in the Pacific Northwest and is a great example of how the Oregon Zoo is fulfilling our mission to inspire our community to create a better future for wildlife. If you come by the Lab to visit the turtles, please be sure to introduce yourself as a Global Giving fan of turtles!

Oct 25, 2012

Fall 2012 Project Update

Greetings from Oregon Zoo's Conservation Lab!

This season we had some changes in the Western Pond Turtle Headstart Project. Instead of getting only newly hatched turtles we also took in a group of 9-month old babies. Why? Because this year field biologists allowed many hatchlings to spend the winter as they naturally would - hiding in the mud and dirt in and around the
ponds where they were hatched.

When young turtles began to emerge from their hiding places in early May, biologists collected 17 of these small juveniles so that invasive bullfrogs and bass would not eat them. These turtles were then brought to the safety of the Oregon Zoo Conservation Lab to grow up. When they were caught these 17 were still about the same size as they were when they hatched, since they had not been eating during cold winter weather in the Columbia Gorge.  If you stop by our Lab (inside our Cascade Stream and Pond exhibit building), you will see that these turtles have grown
considerably!


Last month, they were joined by 21 freshly hatched turtles who are quite a bit smaller. This brings our winter count to 38. The size difference between the May and September babies is obvious, as the May babies have had plenty of food available to them all summer here in the lab. However, the two groups are actually a full year apart in age!
Because they arrived in May and have not been eating and basking all winter (unlike their zoo-housed counterparts) they were much too small to join the 48 that were released this past summer.. These 48 had been with us since the previous September and were all over 100 grams.  By next May we could have more late starters joining us again and all of our present ones should be ready to release by July or August!
 
Thanks to your generous donations through GlobalGiving, we recently did our annual "changing of the bulbs." New light bulbs replaced those from the previous year in all of the turtle tubs. This provides our hatchlings with all the basking oportunities and wide spectrum of light that they need to thrive.

With your help, our turtle project continues to support the recovery of this imperiled species here in the Pacific Northwest and is a great example of how the Oregon Zoo is fulfilling our mission to inspire our community to create a better future for wildlife. If you come by the Lab to visit the turtles, please be sure to introduce yourself as a GlobalGiving fan of turtles!

 

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