Ecological Processes

Table 1 Shannon–Wiener diversity index values for each treatment and sampling month

From: Effects of Hedera helix L. removal on the understory early regeneration in an oak temperate forest in Mexico City

Treatments	August	November	January	March	May	July	September
IH	2.26^a	2.33^a	2.67^a	2.97^a	2.69^a	2.58^a	2.66^a
CV	1.83^b	2.14^a	2.34^b	2.05^b	2.07^b	2.11^b	2.18^b
IR		1.05^b	0.87^c	1.38^c	1.95^b	1.64^c	2.42^ab
CR		1.83^c	1.63^d	2.44^d	2.35^c	1.47^c	2.25^b

Letters represent significantly different groups according to Hutcheson t-test. Plots invaded by H. helix (IH); control plots without H. helix (CV); invaded plots where H. helix was removed (IR); and control plots without H. helix where we manually removed the understory (CR)

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