#Question id: 10824
#Section 2: Evolution
Interspecific competition has been demonstrated experimentally in
#Question id: 11247
#Section 1: Ecology
The theoretical maximum population size that can be supported indefinitely in a given habitat is the _____________.
#Question id: 12677
#Section 5: Applied Ecology & Evolution
#Question id: 10718
#Section 1: Ecology
A researcher collects data on plant species composition in two habitats (P and Q) by using 10 quadrats each in both habitats. She calculates the average a-diversity and the 13-diversity of each habitat from this data (shown below). Which of the following can be inferred about these habitats?
A) Q has greater total diversity (γ) and more heterogeneous than P
B) Q has lower total diversity (γ) and less heterogeneous than P
C) P has lower total diversity (γ) and more heterogeneous than Q
D) P has greater total diversity (γ) and more heterogeneous than Q
#Question id: 4647
#Section 2: Evolution
The treeʹs horizontal axis is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V—Z) represent various common ancestors. Letʹs say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species. Which of the five common ancestors, labeled V—Z, has been most successful in terms of the percent of its derived species that are extant?