Northern Prairie Wildlife Research Center
Input parameters and variables for the pintail productivity model [Facsimile of computer screen with entered data.]
Title . . . . . : STANDARD.BENCH
Habitat File: \MM\HAB\STANDARD.HAB
Random Number Generator Seed: 84489
-----------------------INPUT PARAMETERS----------------------
Seasonal brood survival rate= 0.7400
Seasonal duckling survival rate= 0.5400
Daily hen mortality rate= 0.0010
Hen mortality rate given nest is destroyed= 0.0600
This run uses 1000 birds of which 400 are young (sy) and 600 are adult (asy)
The actual breeding population is 1000 pairs.
This run does not use homing.
Water conditions are:
| Day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||||||||||||||
| Apr | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | |
| May | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Jun | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | |
| Jul | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Aug | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
There are 17 habitats on map STANDARD CENTRAL
1. CROPLANDFALLPLGR Availability= 0.229600
Robel Changes: 125 0.01 159 5.00
18325.00 22025.00 22125.00
Dmr changes: 114.0651 115.9999 116.2500
125.1000 164.0630
2. CROPLANDFALLPLRO Availability= 0.066800
Robel Changes: 170 0.01 22417.50 24022.50 24122.50
24222.50
Dmr changes: 160.0651 161.9999 162.2500 170.1000
195.9999
3. CROPLANDSTUBLGRN Availability= 0.077000
Robel Changes: 110 3.00 111 0.01
140 0.01 163 5.00 18625.00
Dmr changes: 110.0651 11.9999 112.2500 140.1000
164.0630
4. CROPLANDSTUBROCR Availability= 0.022400
Robel Changes: 100 2.50 111 0.01 170
0.01 24022.50 24122.50
Dmr changes: 110.0651 111.9999 112.2500 170.1000
194.9999
5. CROPLANDSUMRFALO Availability= 0.091600
Robel Changes: 60 1.50 152 3.50 153 0.01
168 0.01 220 0.01
Dmr changes: 152.0651 153.9999 168.2500 178.2500
179.0651
6. GRASLAND Availability= 0.245700
Robel Changes: 121 8.00 14513.00 22013.00
22113.00 22213.00
Dmr changes: 121.0535 122.0535 123.0535 124.0535
124.0535
7. GRASLANDWILDLIFE Availability= 0.032600
Robel Changes: 121 8.00 14513.00 22013.00
22113.00 22213.00
Dmr changes: 121.0470 122.0470 123.0470 124.0470
124.0470
8. HAYLAND Availability= 0.030000
Robel Changes: 110 8.00 17135.00 172
5.00 20120.00 202 5.00
Dmr changes: 100.0651 145.0260 171.9000 172.1590
178.0400
9. OTHER Availability= 0.013300
Robel Changes: 6017.00 14522.00 22022.00
22122.00 22222.00
Dmr changes: 60.0680 220.0680 221.0680
222.0680 223.0680
10. PLNTCOVR Availability= 0.019900
Robel Changes: 10515.00 15040.00 16040.00
17040.00 18040.00
Dmr changes: 60.0490 100.0490 110.0490
120.0490 130.0490
11. R OF WAY Availability= 0.012100
Robel Changes: 105 9.00 15220.00 18120.00
182 5.00 222 5.00
Dmr changes: 105.0600 182.5000 183.0600
223.0600 224.0600
12. SCRBLAND Availability= 0.000700
Robel Changes: 6017.00 14522.00 22022.00
22122.00 22222.00
Dmr changes: 60.0680 220.0680 221.0680
222.0680 223.0680
13. TEMP.WETLAND Availability= 0.003600
Robel Changes: 6012.00 14517.00 22017.00
22117.00 22217.00
Dmr changes: 60.0700 220.0700 221.0700
222.0700 223.0700
14. SEAS.WETLAND Availability= 0.025500
Robel Changes: 6012.00 14517.00 22017.00
22117.00 22217.00
Dmr changes: 60.0700 220.0700 221.0700
222.0700 223.0700
15. SEMI.WETLAND Availability= 0.019100
Robel Changes: 6012.00 14517.00 22017.00
22117.00 22217.00
Dmr changes: 60.0700 220.0700 221.0700
222.0700 223.0700
16. PERM.WETLAND Availability= 0.002100
Robel Changes: 6012.00 14517.00 22017.00
22117.00 22217.00
Dmr changes: 60.0700 220.0700 221.0700
222.0700 223.0700
17. WOODLAND Availability= 0.011800
Robel Changes: 6017.00 14522.00 22022.00
22122.00 22222.00
Dmr changes: 60.0680 220.0680 221.0680
222.0680 223.0680
Birds enter the area beginning on day
91
and ending on day 131
Output from pintail productivity model
-----------------MODEL RESULTS---------------------------
Nests per hen = 1.9740
Hatch rate = 0.1348
Hen success rate = 0.2660
Estimated hen success rate (Cowardin and Johnson 1979) = 0.2850
Average clutch size = 7.9474
Summer mortality rate of hens (182 days ending 30 Sept.) = 0.2669
Recruitment rate = 0.4345 (Female recruits / Hens in spring)
Age ratio of females in the fall = 0.5927
Age ratio of males in fall = 0.5213
Age ratio in the fall
= 0.5547 (Recruits / Breeders in the fall)
Proportional population change index = 0.9339
In the nesting population, 400 of 1000 hens are yearlings.
| Habitat # | Nest w/ hatched Clutches |
Initiated Nests | Nest Success | Total Recru. | Percent Recruits | Density Index |
|---|---|---|---|---|---|---|
| 1 | 13 | 206 | 0.0631 | 34 | 3.9125 | 0.3505 |
| 2 | 2 | 46 | 0.0435 | 8 | 0.9206 | 0.2690 |
| 3 | 4 | 88 | 0.0455 | 10 | 1.1507 | 0.4464 |
| 4 | 0 | 12 | 0.0000 | 0 | 0.0000 | 0.2093 |
| 5 | 5 | 116 | 0.0431 | 19 | 2.1864 | 0.4947 |
| 6 | 13 | 770 | 0.1727 | 441 | 50.748 | 1.2242 |
| 7 | 26 | 104 | 0.2500 | 87 | 10.0115 | 1.2462 |
| 8 | 18 | 119 | 0.1513 | 59 | 6.7894 | 1.5495 |
| 9 | 2 | 73 | 0.0274 | 8 | 0.9206 | 2.1440 |
| 10 | 27 | 96 | 0.2812 | 93 | 10.702 | 1.8844 |
| 11 | 4 | 44 | 0.0909 | 12 | 1.3809 | 1.4205 |
| 12 | 0 | 6 | 0.0000 | 0 | 0.0000 | 3.3482 |
| 13 | 1 | 11 | 0.0909 | 2 | 0.2301 | 1.1936 |
| 14 | 12 | 135 | 0.0889 | 40 | 4.6030 | 2.0680 |
| 15 | 9 | 67 | 0.1343 | 27 | 3.1070 | 1.3703 |
| 16 | 0 | 8 | 0.0000 | 0 | 0.0000 | 1.4881 |
| 17 | 10 | 73 | 0.1370 | 29 | 3.3372 | 2.4166 |
| Total | 266 | 1974 | 869 |