Flow and temperature effects on life history diversity of Oncorhynchus mykiss in the Yakima River basin




старонка5/5
Дата канвертавання24.04.2016
Памер282.99 Kb.
1   2   3   4   5

Appendix C. Description of parameter values used in sensitivity analyses.



Model parameter

Default value

Low value

High value

Smolt-to-adult survival (lower basin, upper basin)

1.25%, 2.88%

5th percentile = 0.45%, 1.0%

95th percentile = 4.0%, 9.3%

Winter dispersal (age-0, age-1)

50%, 30%

Default * 0.5 = 25%, 15%

Default * 1.5 = 75%, 45%

Cross-ecotype production (AF X RM)

61%

Default * 0.5 = 30.5%

Default * 1.5 = 91.5%

Anadromous spawner fidelity

76%

Default - 25% = 50%

Default + 25% = 100%

Growth (food availability)

qe = 1

Default - 16% = 0.84

Default + 16% = 1.16

Age-at-maturity (ages 1, …, 5)

8%, 22%, 47%, 73%, 90%

Default - 10% = 0%, …, 80%

Default + 10% = 18%, ..., 100%

Length threshold for smoltification

150 mm

Default - 30 = 120mm

Default + 30 = 180mm

Maximum survival Mar-Oct (ages 1-5)

80%

40%

90%

Appendix D. Summary of model results for each of eight different sensitivity scenarios for the Kittitas, Taneum, and Toppenish Mid reaches. Reach names and corresponding estimates of relative reproductive success under default model settings are shown in italics.

 

Relative reproductive success

 

Change from default

Kittitas

Default =

0.23










Model parameter

Low

High

 

Low - Default

High - Default

Smolt-to-adult survival

0.06

1.33




-0.17

1.10

Winter dispersal

NA

NA




NA

NA

Cross-ecotype production (AF X RM)

0.15

0.41




-0.08

0.18

Anadromous spawner fidelity

0.23

0.40




-0.01

0.17

Growth (food availability)

0.11

0.25




-0.12

0.01

Age-at-maturity

0.45

0.15




0.22

-0.08

Length threshold for smoltification

0.09

0.26




-0.14

0.03

Maximum survival Mar-Oct

0.25

0.25




0.02

0.02



















Taneum

Default =

0.65

 

 

 

Model parameter

Low

High

 

Low - Default

High - Default

Smolt-to-adult survival

0.12

3.67




-0.53

3.02

Winter dispersal

0.70

0.35




0.05

-0.30

Cross-ecotype production (AF X RM)

0.30

1.59




-0.35

0.94

Anadromous spawner fidelity

0.61

1.49




-0.04

0.84

Growth (food availability)

0.29

1.73




-0.36

1.08

Age-at-maturity

1.03

0.42




0.38

-0.23

Length threshold for smoltification

0.67

0.41




0.02

-0.24

Maximum survival Mar-Oct

0.56

0.68




-0.09

0.03

 

 

 

 

 

 

Toppenish Mid

Default =

2.04










Model parameter

Low

High

 

Low - Default

High - Default

Smolt-to-adult survival

0.38

10.17




-1.66

8.13

Winter dispersal

2.12

1.86




0.08

-0.19

Cross-ecotype production (AF X RM)

0.76

7.70




-1.28

5.66

Anadromous spawner fidelity

1.97

6.98




-0.07

4.93

Growth (food availability)

0.22

3.31




-1.82

1.27

Age-at-maturity

4.08

1.20




2.04

-0.84

Length threshold for smoltification

1.65

0.66




-0.39

-1.38

Maximum survival Mar-Oct

2.51

2.01

 

0.46

-0.03






1   2   3   4   5


База данных защищена авторским правом ©shkola.of.by 2016
звярнуцца да адміністрацыі

    Галоўная старонка