Question
A paper by Liza Comita et al. argues that tropical tree species that experienced a form of this phenomenon were less common. For 10 points each:
[10m] Name this ecological phenomenon whose conspecific negative form promotes coexistence in Janzen–Connell effects. In contrast, Allee effects are a positive form of this phenomenon.
ANSWER: density-dependence [or density-dependent; accept frequency-dependence or frequency-dependent]
[10h] Comita’s findings are based on data from the Forest Dynamics Plot on this island in Panama. Stephen Hubbell and Robin Foster established that plot administered by the Smithsonian Tropical Research Institute on this island.
ANSWER: Barro Colorado Island [or BCI]
[10e] Based on work at BCI, Hubell proposed a theory named for this adjective in which trophically similar species are considered equivalent. Motoo (“mo-to-oh”) Kimura proposed a theory of molecular evolution described by this term.
ANSWER: neutral theory [accept neutral theory of molecular evolution; accept unified neutral theory of biodiversity; prompt on UNTB by asking “what does that stand for?”]
Data
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total |
|---|---|---|---|---|---|
| Brown A | Claremont A | 0 | 0 | 10 | 10 |
| Chicago A | Rutgers A | 10 | 0 | 10 | 20 |
| Chicago C | Michigan A | 0 | 0 | 10 | 10 |
| Columbia A | McGill A | 0 | 0 | 10 | 10 |
| Cornell A | UC Berkeley A | 10 | 0 | 10 | 20 |
| Cornell B | Minnesota B | 0 | 0 | 10 | 10 |
| Duke A | Georgia Tech A | 0 | 0 | 10 | 10 |
| Illinois A | Penn State A | 0 | 0 | 0 | 0 |
| Imperial A | Iowa State A | 0 | 10 | 10 | 20 |
| Johns Hopkins A | North Carolina A | 0 | 0 | 0 | 0 |
| MIT A | Florida B | 0 | 0 | 10 | 10 |
| Maryland A | Houston A | 0 | 0 | 10 | 10 |
| Minnesota A | Penn A | 0 | 0 | 0 | 0 |
| Ohio State A | Rutgers B | 0 | 0 | 10 | 10 |
| Purdue A | Florida A | 0 | 0 | 0 | 0 |
| Stanford A | Georgia Tech B | 0 | 10 | 10 | 20 |
| Toronto A | South Carolina A | 0 | 0 | 10 | 10 |
| Vanderbilt A | Harvard A | 0 | 0 | 0 | 0 |
| WUSTL A | Indiana A | 0 | 0 | 10 | 10 |
| Yale A | WUSTL B | 0 | 0 | 10 | 10 |
| Yale B | Columbia B | 0 | 0 | 0 | 0 |