Cases Studies: Importance of Scales in Ecological InvestigationsCases Studies: Importance of Scales in Ecological Investigations

EEES 6760, University of ToledoApril 6, 2005

LeMoine & Chen 2003

0 50 100 150 200 250

Distance

0

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So

il Te

mp

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Toward InteriorToward Clearcut

6:00 8:00 10:00 12:00 14:00

Time

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Clearcut (0 m)60 m180 mInterior (270 m)

Figure 1

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1b

Distance (m)

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Earthwatch/MTU Plot

MTU Plot

UW Plot

N

348 347 343344345346341

342349

356 357 361360359358362

355

381 382 386385384383388

387380

551 511521531541

336

501571

400 399 395396397398393

394401

407 408 412411410409414

413406

426 425 421422423424 419420427

771 761 721731741751 701711781

374 373 369370371372367

368

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329 330 334333332331 335328

552 512522532542 502572

553 513523533543 503573

554 514524534544 504574

555 515525535545 505575

556 516526536546 506576

651 611621631641 601671

550 510520530540 500570

557 517527537547 507577

558 518528538548 508578 433 434 438437436435 440439432

772 762 722732742752 702712782602

773 763 723733743753 703713783603

770 760 720730740750 700710780600

652 612622632642672

653 613623633643673

650 610620630640670

561

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566

661

560

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568

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Crane

Dis

tanc

e (m

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Chen et al. 2004

Chen et al 2004

Figure 3

9.375 18.75 37.5 75 150 300

Scales (m)

1.00

1.20

1.40

1.60

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2.00

Sh

an

no

n I

nd

ex

Figure 3

Song et al. 2004

Your text

(a) Basal area (m2)

(c) Foliage biomass (kg.ha-1)

(b) Above-ground biomass (Mg.ha-1)

51.1 - 86.2

86.3 - 226.3

126.3 - 486.8

486.9 - 815.5

815.6 - 1652.4

5.5 - 15.6

15.7 - 22.1

22.2 - 38.5

Fig. 5

H2

< 51.0

Chen et al. 2004

120 m resolution30 m resolution

480 m resolution240 m resolution

1020 m resolutionMature mixed hardwoods

Young mixed hardwoods

Mature conifer

Mixed conifer/hardwoods

Old clear cut

Bare ground/ recent clear cut

Figure ###: Classified with successively coarser resolutions, similar to the approach of Turner et al. (2000).

LeMoine & Chen 2003

Figure 5

LeMoine & Chen 2003

600 1300 2000

Time (h)

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Temperature (C)

HT0 HT1 HT2

Chen et al. in preparation.

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Rel. Elevation (m)

Shannon H

Distance along the Transect (m)

Sca

le (

m)

Wavelet Transform of Elevation and Diversity

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Small-Block Pine Pine-Oak-Aspen Forest

Large-Block Pine OakPine Barrens

Landscape Level (Four Landscapes)Landscape Level (Four Landscapes)

Do differences among landscape-level disturbance regimes influence patterns of understory plant diversity or composition?

Cumulative Species Richness

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RR

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RP5 MP NC

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H2

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Distance (m)

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Sp

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ies

Pine Barrens Large-Block PO

Small-Block Pine POA Forest

Old Harvest Landing

Sand Road- Mod. Use

Sand Road- Light Use

Clearing

Access Road

ATV Trail

Dry Streambed

Grassy Roadside

Brosofske et al.

Wavelet Analysis of Shannon Diversity (H’)Wavelet Analysis of Shannon Diversity (H’)15

00

Old Harvest Landing

Sand Road- Mod. Use

Sand Road- Light Use

Clearing

Access Road

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0050

0R

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tio

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m)

OPBBOPBOPB PASPB CC YA2 H2H1JPO SPB

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H’

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W. Var.

Sca

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W E

Wavelet Analysis Comparison

10005000 1500 2000 2500 3000

BOPBOPB PA

SPB CC

YA2 H2

H1

JPO SPB OP

BM

A

YA

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OC

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OC

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OBCC OCCH H HF F2JPO

RP5 MP

NC

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Re

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Distance (m)

Pine Barrens

POA Forest

Small-Block Pine

Large-Block PO

MP F2

H H H H H

F2

H2

F H2

CTRP60 RJP RP12 RRP

OC

C

RP

7

RP

7

RP

60

OC

C

MP

OC

C

TRP60

CC

W E

Old Harvest Landing

Sand Road- Mod. Use

Sand Road- Light Use

Clearing

Access Road

ATV Trail

Dry Streambed

Grassy Roadside

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Spatial and

Temporal

Scale

Complexity of interactions among

human, biological,geologic, and climate

systems

of structure and composition

Variability

Ecosystem Functionproductivity

diversityStability

…

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