Succession at the Eugene Millrace Pond

Succession at the Eugene Millrace Pond Succession at the Eugene Millrace Pond - Start

2020-06-17 2K 2 0 0

Description

Tanner Wentlandt. Question:. How does today’s Millrace Pond compare with what it was 50 years ago? 500 years ago?. Today’s Pond vs. the Pond of the 1960s. Method:. Scour the internet and local resources for old pictures of the Millrace Pond. ID: 780702 Download

Embed code:
Download

Succession at the Eugene Millrace Pond




Download - The PPT/PDF document "Succession at the Eugene Millrace Pond" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.



Presentations text content in Succession at the Eugene Millrace Pond

Slide1

Succession at the Eugene Millrace Pond

Tanner Wentlandt

Slide2

Question:

How does today’s Millrace Pond compare with what it was 50 years ago? 500 years ago?

Slide3

Today’s Pond vs. the Pond of the 1960s

Slide4

Method:

Scour the internet and local resources for old pictures of the Millrace Pond

Lane County Historical Society

Don Hunter Collection

Take “before and after” style pictures

Identify plants in old pictures

Slide5

2017

Slide6

1963

Don Hunter

Slide7

2017

Slide8

1963

Don Hunter

Slide9

2017

Slide10

1963

Don Hunter

Slide11

1963

Don Hunter

Slide12

2017

Slide13

I had assumed that the vegetation was far older than that

Made plant ID easy

Grass and Dirt to Canopy in 54 years

Slide14

Today’s Pond vs. the Pond of 500 Years

A

go:

The Quest for Analogous Ponds

(and Hydrocortisone)

Slide15

On Analogous Ponds

:

I needed to find a pond/slough that would be a

good representation of what the Millrace Pond

would have looked like 500 years ago.

I was looking for a pond that had not beenaltered much since then, and I was told about two.

Slide16

What’s there?

How much?

Millrace Pond

Slide17

Method:

Belt Transect

One 30-meter transect parallel to water’s edge

One 5-meter transect perpendicular to water’s edge every 5 meters along the 30-meter transect

Slide18

Millrace Pond Transect

Slide19

Analog 1: Mt. Pisgah Water Garden

(Approx.)

Slide20

Analog 2: Willamette River Slough

Slide21

Initial Observations and Changing Ideas

Initial findings showed no obvious change in vegetation type in lateral transects

Decided to break parallel transect up into 5-meter sections and add percent cover calculations from those to lateral transect data

Slide22

Results

Slide23

Results

Slide24

Conclusion

The Millrace Pond was largely planted

Less native species

Would have had far more canopy cover from

F.

latifolia

and

A.

macrophyllum

Would have had a shrub layer of

S.

albus

Wouldn’t have any

R.

bifrons

or non-native

Quercus

sp.


About DocSlides
DocSlides allows users to easily upload and share presentations, PDF documents, and images.Share your documents with the world , watch,share and upload any time you want. How can you benefit from using DocSlides? DocSlides consists documents from individuals and organizations on topics ranging from technology and business to travel, health, and education. Find and search for what interests you, and learn from people and more. You can also download DocSlides to read or reference later.