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Ecology: Tipping Points with Forestry Applications

The working group will consider both theoretical aspects of tipping points, critical thresholds and resiliency, as well as applications to forest degradation and other fields of interest. Topics are (i) connecting theory of resiliency to data sets; (ii) dealing with heterogeneous data at multiple scales to provide insight in resiliency of ecological systems; in particular, for forest systems the combination of plot data, imagery (Landsat, Lidar, Modis, etc.), topo data, soils data, etc. (iii) there is a new field of trajectory analysis that looks at very long time-series image data at the pixel level to try to identify when a change occured accurately; (iv) change detection in image data sets, emphasizing detection of fire and insect disturbances in forest systems. For any kind of large area approach, particularly in the tropics, a data combination that includes remotely sensed data is probably essential. Spectral data such as from Landsat or finer resolution RapidEye are possibilities as are lidar data where it can be acquired. For forestry applications, the American inventory data set has many possibilities. In some upper Midwestern and southern states, 4-5 measurements of the same trees on the same plots at 5-year intervals are available. However, all kinds of issues emerge when attempting to combine data from multiple sources, at multiple dates, and with multiple resolutions. Within the remote sensing community, some interesting work characterized as trajectory analysis is underway at Corvallis and also at Boston. This work follows individual pixels over time and focuses spectral thresholds indicating disturbance and recovery trajectories following disturbance.

Christopher Strickland's picture

Meeting TOMORROW (4/3/2015). Please note the different phone number and code.

Here is the info for the organizational meeting tomorrow morning, 4/3/2015, at 11:00am. PLEASE NOTE THE DIFFERENT PHONE NUMBER AND CODE!

Topic: Tipping Points Meeting
Date: Friday, April 3, 2015
Time: 11:00 am, Eastern Daylight Time (New York, GMT-04:00)
Meeting Password: EcTypo1

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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/
2. If requested, enter your name and email address.

Meeting Date: 
April 3, 2015 - 11:00am - 1:00pm
Christopher Strickland's picture

Reminder: meeting today! (2:30pm EST)

Topic: Tipping Points Meeting 19
Date: Wednesday, February 25, 2015
Time: 2:30 pm, Eastern Daylight Time (New York, GMT-04:00)
Meeting Password: EcTypo1

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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/
2. If requested, enter your name and email address.
3. If a password is required, enter the meeting password: EcTypo1
4. Click "Join".

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Meeting Date: 
February 25, 2015 - 11:48am
Christopher Strickland's picture

Meeting canceled next week! Our next meeting is 2/11.

Topic: Tipping Points Meeting 17
Date: Wednesday, February 11, 2015
Time: 2:30 pm, Eastern Daylight Time (New York, GMT-04:00)
Meeting Password: EcTypo1

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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/
2. If requested, enter your name and email address.
3. If a password is required, enter the meeting password: EcTypo1
4. Click "Join".

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Meeting Date: 
February 11, 2015 - 2:30pm - 4:30pm
karna.gowda's picture

Konza Prairie vegetation cover data (used in Rataczak et al.)

jfnorton's picture

Paper with a list of datasets (at the end of the supplementary materials)

jfnorton's picture

Paper with a list of datasets (at the end of the supplementary materials)

Christopher Strickland's picture

Next meeting

Topic: Tipping Points Meeting 16
Date: Wednesday, January 28, 2015
Time: 2:30 pm, Eastern Daylight Time (New York, GMT-04:00)
Meeting Password: EcTypo1

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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/
2. If requested, enter your name and email address.
3. If a password is required, enter the meeting password: EcTypo1
4. Click "Join".

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Meeting Date: 
January 28, 2015 - 2:30pm - 4:30pm
Christopher Strickland's picture

First meeting of spring semester

Topic: Tipping Points Meeting 14
Date: Wednesday, January 14, 2015
Time: 2:30 pm, Eastern Daylight Time (New York, GMT-04:00)
Meeting Password: EcTypo1

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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/
2. If requested, enter your name and email address.
3. If a password is required, enter the meeting password: EcTypo1
4. Click "Join".

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Meeting Date: 
January 14, 2015 - 3:30pm - 5:30pm
Christopher Strickland's picture

Phillip's literature notes, and noise sensitivity paper

Christopher Strickland's picture

Next meeting

Topic: Tipping Points Meeting 13
Date: Wednesday, December 10, 2014
Time: 2:30 pm, Eastern Daylight Time (New York, GMT-04:00)
Meeting Password: EcTypo1

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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/
2. If requested, enter your name and email address.
3. If a password is required, enter the meeting password: EcTypo1
4. Click "Join".

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Meeting Date: 
December 10, 2014 - 2:30pm - 4:30pm