This allowed me to answer questions such as, 'How important are group differences in marital status in explaining the disparity in life expectancy when income and education are equal?' The richness of the socioeconomic information in the dataset was critical for this.
While all populations contained both bacterial species for the duration of the experiment (i.e., equal species richness), coexistence was more equitable in populations containing phage infecting the superior competitor (i.e., greater evenness).
This test sets a sign to each pair by subtracting branch lengths in the direction from species-rich to species poor; we did not include the sister pairs with equal species-richness as these cannot be accommodated in the Wilcoxon Signed-Ranks test.
As experimental evidence on this relationship is scarce, we developed a field study with experimental sown flower strips with four functional diversity levels, based on multiple flower traits and with equal plant species richness.
Our findings of equal adjusted species richness in fragmented and intact forest plots are consistent with those from a study of trees in the same experiment [13].
We placed each plot pair 0.5 m apart at the same elevation within a pool to obtain the best approximation of equal abundance and richness of plant species initially.
Total richness equaled 10 species, nine of which were globose and only one cylindrical, all of small size.
Once described as the "Yang to Bob Dylan's Yin, equaling him in richness and profusion of imagery," Mitchell, like her 1960s contemporary, turned pop music into an art form.
The chiefest among them is still Shakespeare, who has, I think, no equal for variety and richness of character.
Reforested areas had equal or higher bird richness and similar functional group structure.
