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Dibs Fall 2026

GEOG 2

Biodiversity in Changing World

Lecture, three hours; discussion, two hours. Biogeographic exploration of plant and animal diversity and conservation issues on continents and islands around world. Study of physical, biotic, and human factors responsible for evolution, persistence, and extinction of species and ecological communities. Analysis of effects of human activity. P/NP or letter grading.

Course statistics

Predicted GPA
3.59
n = 538 · 6 terms · ± 0.023
A range
72%
of letter grades
Taken P/NP
6%
75% of those passed
D / F / W
1.9%
incl. withdrawals

Sections in Fall 2026

Sections offered, with live enrollment and predicted GPA
Section Status Enrolled Seat risk Meets Instructor Predicted GPA
Lec 1 Open
94 of 129
73% full
 could fill MWF 10:00am-10:50am Antell, G.
3.31n=49 · this instructor

Enrollment history

Final enrollment per term, averaged across that term's sections. Four years deep, summer excluded. Per-section live curves are on each section page.

  • 11922W
  • 9523W
  • 11423S
  • 8424W
  • 11224F
  • 5025S
Enrolment by term: 22W 119, 23W 95, 23S 114, 24W 84, 24F 112, 25S 50
Peak 119 Most recent 50 in 25S 6 terms on record

Grade distribution

  • A+ 19 · 3.3%
  • A 299 · 52.1%
  • A- 71 · 12.4%
  • B+ 38 · 6.6%
  • B 52 · 9.1%
  • B- 12 · 2.1%
  • C+ 13 · 2.3%
  • C 17 · 3.0%
  • C- 7 · 1.2%
  • D 3 · 0.5%
  • D- 3 · 0.5%
  • F 4 · 0.7%
  • P 27 · 4.7%
  • NP 9 · 1.6%

Grey bars are non-letter outcomes — P/NP, S/U, incompletes. They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.

By instructor

Instructor Predicted Raw n Terms A range
STIEKMAN, CHELSEA M 3.78 3.79 318 3 86%
ILLES, LILIA I 3.33 3.31 171 2 54%
ANTELL, GAWAIN 3.31 3.24 49 1 51%

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department — so an instructor with a handful of students sits near the course mean rather than topping the list.

By term