1 / 19

Cases Studies: Importance of Scales in Ecological Investigations EEES 6760, University of Toledo

Cases Studies: Importance of Scales in Ecological Investigations EEES 6760, University of Toledo January 28, 2009. Reference Reading:

rhona
Download Presentation

Cases Studies: Importance of Scales in Ecological Investigations EEES 6760, University of Toledo

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cases Studies: Importance of Scales in Ecological Investigations EEES 6760, University of Toledo January 28, 2009

  2. Reference Reading: Saunders, S.C., J. Chen, T.D. Drummer, E.J. Gustafson, and K.D. Brosofske. 2005. Identifying scales of pattern in ecological data: a comparison of Lacunarity, spectral and wavelet analyses. Ecological Complexity 2: 87-105. [PDF]

  3. Changes in temperature with distance from an edge and by time 1a 1b LeMoine & Chen 2003

  4. LeMoine & Chen 2003

  5. Changes in carbon fluxes LeMoine & Chen 2003

  6. The 16 ha stem-mapped plot at the Wind River Canopy Site Chen et al. 2004

  7. Chen et al 2004

  8. Changes in H’ with spatial scales Song et al. 2004

  9. Chen et al. 2004

  10. The Mesocosms Facility near Duluth

  11. Diurnal changes in soil temperature with heat loadings (HT) Chen et al. 2008

  12. Changes in difference of daily mean temperature with heat loadings (HT) from the ambient temperature (DT, °C at 25 cm depth) of the peatlandmesocosms for each water level (WL) treatment in 1999 and 2000 DT(oC) Chen et al. 2008 1999 2000

  13. Landscape Level (Four Landscapes) Do differences among landscape-level disturbance regimes influence patterns of understory plant diversity or composition? Pine Barrens Large-Block Pine Oak Small-Block Pine Pine-Oak-Aspen Forest

  14. Large-Block PO Pine Barrens BOPB YA2 PA H2 ORP15 MA RP15 H1 MP JPO OCC POA OPB NCC OCC OBCC H F H H OCC RP5 F2 OPB SPB YA2 JPO SPB CC Access Road Sand Road- Mod. Use Old Harvest Landing Sand Road- Light Use POA Forest Small-Block Pine Number of Species H2 Clearing RP7 OCC TRP60 OCC RP7 OCC RP60 MP H2 F2 MP RRP RP12 TRP60 RJP F2 H C H H H H F ATV Trail C C Dry Streambed Grassy Roadside Distance (m) Cumulative Species Richness Brosofske et al. 2006

  15. 1500 Scale 1000 500 1000 0 Resolution (m) 1.2 0.6 0 W. Var. Access Road 500 Sand Road- Mod. Use E Old Harvest Landing W 0 Sand Road- Light Use H’ 0 1.0 2.0 Clearing OPB MA YA2 JPO SPB OPB SPB CC YA2 H1 PA BOPB OPB H2 0 1000 2000 3000 Distance (m) Wavelet Analysis of Shannon Diversity (H’) 1500

  16. Datasets used in the comparison of lacunarity, spectral, and wavelet analysis. Saunders et al. 2004.

  17. Reconstruction of data series from the discrete wavelet. Saunders et al. 2004.

  18. Log(lacunarity) (1), spectral density (2), and wavelet variance (3) for air temperature at the ground surface every 5 m along a transect

  19. Cases Studies: Importance of Scales in Ecological Investigations Homework 1: Changes in Species Cover at Multiple Spatial Scales Using: (1) moving window average; and (2) the gliding box method to examine the changes of species coverage of bracken fern (Pteridiumaquilinum) along a 3000 m transect across the Moquah Pine Barrens in Northern Wisconsin. More instructions to be emailed. Homework due: 2/16?

More Related