Download - COMMUNITY CHANGE (SUCCESSION)
![Page 1: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/1.jpg)
COMMUNITY CHANGE COMMUNITY CHANGE (SUCCESSION)(SUCCESSION)
Krebs chap. 21; pages 403-424; 431Krebs chap. 21; pages 403-424; 431
“the non-seasonal, directional and continuous pattern of colonization and extinction of species populations on a site”
![Page 2: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/2.jpg)
PRIMARY SUCCESSION
Mt. St. Helens pp403-405
Lake Michigan dunes pp416-419
Glacier Bay pp413-416
![Page 3: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/3.jpg)
SECONDARY SUCCESSION
Krebs pp419-422
Abandoned fields
Forest regrowth
Abandoned lots
![Page 4: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/4.jpg)
Mount St. Helens
Vegetation recovery
![Page 5: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/5.jpg)
Sand dune ecology
Vegetationhummock
Beachgrass
![Page 6: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/6.jpg)
Fig 21.11 Profile of Lake Michigan sand dunes
succession
“SFT” – space-for-time substitution
pastpresent
![Page 7: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/7.jpg)
“Polyclimax” sand dune successions Fig. 21-12
![Page 8: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/8.jpg)
Krebs Fig. 21.7
Ice recession in Glacier Bay, Alaska, since 1760
1940
1860
1760
![Page 9: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/9.jpg)
Alders and cottonwoods covering the hillsides
50 years
![Page 10: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/10.jpg)
Spruce coming into the alder and cottonwood forest
100 years
![Page 11: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/11.jpg)
Spruce and hemlock forest
250 years
![Page 12: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/12.jpg)
Fig 21.9 Change in soil-N
Topsoil
Mineral
soil
![Page 13: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/13.jpg)
1 year later
Wildfire
![Page 14: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/14.jpg)
Wind disturbance (“blowdowns”)
![Page 15: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/15.jpg)
Opax Mountain Silvicultural Systems Trial
(near Kamloops, BC)
![Page 16: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/16.jpg)
Control burning
![Page 17: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/17.jpg)
Control burning
![Page 18: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/18.jpg)
Control burn plot
![Page 19: COMMUNITY CHANGE (SUCCESSION)](https://reader036.vdocuments.us/reader036/viewer/2022062309/568146d2550346895db40aa5/html5/thumbnails/19.jpg)
Monitoring succession after fire