Ecological Archives E087-004-A5

John L. Maron and Mathew J. Kauffman. 2006. Habitat-specific impacts of multiple consumers on plant population dynamics. Ecology 87:113–124.

Appendix E. ANOVA results testing the effects of rodent and/or insect exclusion on seedling survival (for 2001–2004 cohorts).

Mixed-model ANOVA testing effects of block nested within site, site, rodent exclusion, insect exclusion and their interactions on seedling survival in 2001–2004. In 2004 plants were not treated with insecticide so the effects of insect exclusion and the insect × rodent exclusion interaction could not be tested. Analyses were performed on arcsine-transformed data.

DUNES

Year

2001

2002

2003

2004

 

F1,15

P

F1,15

P

F1,18

P

F1,15

P

Rodent Exclusion

0.5

0.49

4.8

0.04

0.34

0.56

1.0

0.33

Insect Exclusion

0.07

0.79

0.22

0.65

0.26

0.61

---

---

Rodent × Insect

1.28

0.28

1.18

0.29

0.13

0.72

---

---

 

GRASSLANDS

Year

2001

2002

2003

2004

 

F1,15

P

F1,18

P

F1,15

P

F1,15

P

Rodent Exclusion

0.02

0.89

16.1

0.0008

0.0

0.98

0.96

0.34

Insect Exclusion

2.1

0.17

3.2

0.09

0.07

0.79

---

---

Rodent × Insect

2.35

0.15

0.2

0.66

2.4

0.14

---

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