Table 1. Highest species richness values for birds surveyed within belt transects in treatments, from previous studies (Kennedy 1994; Messmer 1990) and current studies (2001-2002) at Central Grasslands Research Extension Center, Streeter, ND.

 

Study Area


 

Grazing Treatment

Number of Species

Previous Current
CRP (Kennedy 1994) Rotational

Season Long

Idle

9

7

7

7

5

5

Native (Messmer 1990) Twice-over Rotation

Season Long

Short Duration

Idle

21

18

19

18

14

12

12

10

Grazing Intensity Low

Moderate

High

Extreme

Idle

-

-

-

-

-

9

10

11

13

10