Psyche: A Journal of Entomology

Research Article

Relationships between Plant Diversity and Grasshopper Diversity and Abundance in the Little Missouri National Grassland

Table 3

Results from regression analyses of plant species richness, live cover percentage, Shannon diversity, and Simpson evenness on grasshopper abundance and diversity. Regression equations are provided for results with a 𝑃 value less than  .1.
Independent (plant)Dependent (grasshopper)Statistical data
A. 2001
 Species richnessSpecies richness 𝑅 2 = 0 . 0 0 2 , 𝑃 = . 8 4
Shannon diversity π‘Œ = 1 . 7 0 + 0 . 0 5 5 𝑋 ; 𝑅 2 = 0 . 1 7 , 𝑃 = . 𝟎 πŸ“ πŸ•
Simpson evenness π‘Œ = 0 . 2 1 5 + 0 . 0 2 4 𝑋 , 𝑅 2 = 0 . 1 9 , 𝑃 = . 𝟎 πŸ’ πŸ“
Abundance π‘Œ = 8 . 6 βˆ’ 0 . 3 2 𝑋 ; 𝑅 2 = 0 . 0 2 , 𝑃 = . 5
 Shannon diversitySpecies richness 𝑅 2 < 0 . 0 0 1 , 𝑃 = . 9 9
Shannon diversity 𝑅 2 = 0 . 1 , 𝑃 = . 1 6
Simpson evenness 𝑅 2 = 0 . 0 6 , 𝑃 = . 2 6
Abundance 𝑅 2 = 0 . 0 3 , 𝑃 = . 4 3
 Live coverSpecies richness π‘Œ = 8 . 2 3 + 0 . 2 9 2 𝑋 ; 𝑅 2 = 0 . 4 ; 𝑃 = . 𝟎 𝟎 𝟏
Shannon diversity 𝑅 2 = 0 . 1 , 𝑃 = . 1 5
Simpson evenness 𝑅 2 = 0 . 0 1 6 , 𝑃 = . 6
Abundance π‘Œ = βˆ’ 3 . 3 7 + 0 . 3 2 9 𝑋 ; 𝑅 2 = 0 . 2 , 𝑃 = . 𝟎 πŸ‘ πŸ”
 EvennessSpecies richness 𝑅 2 = 0 . 0 0 3 , 𝑃 = . 8
Shannon diversity 𝑅 2 = 0 . 1 1 , 𝑃 = . 1 2
Simpson evenness 𝑅 2 = 0 . 0 5 , 𝑃 = . 3 3
Abundance 𝑅 2 = 0 . 0 2 4 , 𝑃 = . 5
B. 2002
 Species richnessSpecies richness 𝑅 2 = 0 . 0 1 , 𝑃 = . 6
Shannon diversity 𝑅 2 = 0 . 0 8 , 𝑃 = . 2
Simpson evenness 𝑅 2 = 0 . 0 9 , 𝑃 = . 1 5
Abundance 𝑅 2 = 0 . 0 6 , 𝑃 = . 2 5
 Shannon diversitySpecies richness π‘Œ = 2 4 . 0 1 βˆ’ 3 . 8 8 2 𝑋 , 𝑅 2 = 0 . 1 9 , 𝑃 = . 𝟎 πŸ’
Shannon diversity 𝑅 2 = 0 . 0 5 , 𝑃 = . 3 2
Simpson evenness π‘Œ = 0 . 1 6 8 + 1 5 7 𝑋 , 𝑅 2 = 0 . 2 1 , 𝑃 = . 𝟎 πŸ‘
Abundance π‘Œ = 1 5 . 0 βˆ’ 6 . 9 6 𝑋 , 𝑅 2 = 0 . 2 4 , 𝑃 = . 𝟎 𝟏 πŸ“
 Live coverSpecies richness 𝑅 2 = 0 . 0 2 , 𝑃 = . 5 3
Shannon diversity π‘Œ = 1 . 8 + 0 . 0 1 4 𝑋 , 𝑅 2 = 0 . 2 , 𝑃 = . 𝟎 πŸ‘
Simpson evenness π‘Œ = 0 . 1 5 8 + 0 . 0 0 8 𝑋 , 𝑅 2 = 0 . 2 1 2 , 𝑃 = . 𝟎 𝟐 πŸ•
Abundance 𝑅 2 = 0 . 0 0 3 , 𝑃 = . 8
 EvennessSpecies richness π‘Œ = 1 5 . 4 βˆ’ 9 . 6 𝑋 , 𝑅 2 = 0 . 2 5 , 𝑃 = . 𝟎 𝟏 πŸ”
Shannon diversity 𝑅 2 = 0 . 0 3 5 , 𝑃 = . 3 9
Simpson Evenness π‘Œ = 0 . 1 5 1 + 0 . 3 4 8 𝑋 , 𝑅 2 = 0 . 2 2 , 𝑃 = . 𝟎 𝟐 πŸ“
Abundance π‘Œ = 1 5 . 7 βˆ’ 1 5 . 3 6 𝑋 , 𝑅 2 = 0 . 2 6 , 𝑃 = . 𝟎 𝟏 πŸ’