Calvin Cycle Clarification

(Wikipedia.com)

Calvin Cycle - Carbon Fixation (Ecosystems Lecture 3)

The Calvin cycle, is the second stage of photosynthesis whereby carbon fixation occurs.  Note: Calling the Calvin cycle the "dark reaction" is a little misleading because it can take place in the daytime, though light is not actively required.

(Pearson Education Inc., 2009)

This website gives a quick refresher of the Calvin Cycle, C3, C4, and CAM pathways.

The Ecology of Photosynthetic Pathways provides a more advanced explication of the topic.