EDP Sciences logo
Subscriber Authentication Point
Search
Menu
All issues Volume 55 (2019) Ann. Limnol. - Int. J. Lim., 55 (2019) 14 Full HTML
Free Access

Table 1

Results of the three-way ANOVA testing the effects of temperature, algal density, competitor-conditioned medium concentration and their interactions on the selected life history variables of B. calyciflorus and M. macrocopa.

Source of variation DF SS MS F
B. calyciflorus        
   Life expectancy at birth (e 0)        
      Temperature 2 18351.81 9175.91 313.43 ***
      Algal density 2 181.39 90.69 3.10 *
      MCM 2 2.73 1.37 0.05 ns
      Temperature × Algal density 4 570.13 142.53 4.87 **
      Temperature × MCM 4 191.84 47.96 1.64 ns
      Algal density × MCM 4 297.28 74.32 2.54 *
      Temperature × Algal density × MCM 8 196.47 24.56 0.84 ns
      Error 54 1580.91 29.28  
   Net reproductive rate (R 0)        
      Temperature 2 28.16 14.08 125.76 ***
      Algal density 2 7.46 3.73 33.34 ***
      MCM 2 0.09 0.04 0.38 ns
      Temperature × Algal density 4 10.74 2.69 23.98 ***
      Temperature × MCM 4 0.40 0.10 0.88 ns
      Algal density × MCM 4 1.65 0.41 3.68 **
      Temperature × Algal density × MCM 8 1.99 0.25 2.22 *
      Error 54 6.05 0.11  
   Generation time (T)        
      Temperature 2 7925.84 3962.92 115.74 ***
      Algal density 2 118.02 59.01 1.72 ns
      MCM 2 99.51 49.76 1.45 ns
      Temperature × Algal density 4 1031.47 257.87 7.53 ***
      Temperature × MCM 4 421.81 105.45 3.08 *
      Algal density × MCM 4 536.89 134.22 3.92 **
      Temperature × Algal density × MCM 8 193.26 24.16 0.71 ns
      Error 54 1848.90 34.24  
   Intrinsic rate of population growth (rm )        
      Temperature 2 1.86 0.93 60.79 ***
      Algal density 2 0.22 0.11 7.08 **
      MCM 2 0.05 0.02 1.53 ns
      Temperature × Algal density 4 0.23 0.06 3.83 **
      Temperature × MCM 4 0.09 0.02 1.52 ns
      Algal density × MCM 4 0.08 0.02 1.38 ns
      Temperature × Algal density × MCM 8 0.06 0.01 0.50 ns
      Error 54 0.82 0.02  
   Average lifespan (LS)        
      Temperature 2 38056.47 19028.23 860.40 ***
      Algal density 2 168.41 84.20 3.81 *
      MCM 2 0.59 0.29 0.01 ns
      Temperature × Algal density 4 443.67 110.92 5.02 **
      Temperature × MCM 4 133.48 33.37 1.51 ns
      Algal density × MCM 4 239.82 59.96 2.71 *
      Temperature × Algal density × MCM 8 176.66 22.08 1.00 ns
      Error 54 1194.24 22.12  
   Total number of offspring (NO)        
      Temperature 2 37.75 18.87 148.00 ***
      Algal density 2 9.88 4.94 38.74 ***
      MCM 2 0.26 0.13 1.02 ns
      Temperature × Algal density 4 13.09 3.27 25.66 ***
      Temperature × MCM 4 0.36 0.09 0.70 ns
      Algal density × MCM 4 1.41 0.35 2.76 *
      Temperature × Algal density × MCM 8 1.89 0.24 1.85 ns
      Error 54 6.89 0.13  
M. macrocopa        
   Life expectancy at birth (e 0)        
      Temperature 2 972.87 486.44 433.61 ***
      Algal density 2 29.25 14.63 13.04 ***
      CCM 2 0.48 0.24 0.21 ns
      Temperature × Algal density 4 17.06 4.27 3.80 *
      Temperature × CCM 4 12.73 3.18 2.84 *
      Algal density × CCM 4 0.81 0.20 0.18 ns
      Temperature × Algal density × CCM 8 14.38 1.80 1.60 ns
      Error 54 60.58 1.12  
   Net reproductive rate (R 0)        
      Temperature 2 2336.31 1168.16 43.58 ***
      Algal density 2 2785.49 1392.75 51.96 ***
      CCM 2 7074.58 3537.29 131.96 ***
      Temperature × Algal density 4 1926.10 481.52 17.96 ***
      Temperature × CCM 4 1382.06 345.52 12.89 ***
      Algal density × CCM 4 1722.26 430.57 16.06 ***
      Temperature × Algal density × CCM 8 1185.94 148.24 5.53 ***
      Error 54 1447.56 26.81  
   Generation time (T)        
      Temperature 2 522.58 261.29 2044.00 ***
      Algal density 2 0.47 0.24 1.84 ns
      CCM 2 1.22 0.61 4.77 *
      Temperature × Algal density 4 4.07 1.02 7.95 ***
      Temperature × CCM 4 3.59 0.90 7.02 ***
      Algal density × CCM 4 1.80 0.45 3.51 *
      Temperature × Algal density × CCM 8 0.89 0.11 0.87 ns
      Error 54 6.90 0.13  
   Intrinsic rate of population growth (rm )        
      Temperature 2 4.22 2.11 2494.00 ***
      Algal density 2 0.02 0.01 8.89 ***
      CCM 2 0.24 0.12 140.24 ***
      Temperature × Algal density 4 0.02 0.01 6.63 ***
      Temperature × CCM 4 0.13 0.03 39.63 ***
      Algal density × CCM 4 0.11 0.03 33.78 ***
      Temperature × Algal density × CCM 8 0.06 0.01 8.19 ***
      Error 54 0.05 0.00  
   Average lifespan (LS)        
      Temperature 2 6975.07 3487.53 422.33 ***
      Algal density 2 204.11 102.05 12.36 ***
      CCM 2 3.48 1.74 0.21 ns
      Temperature × Algal density 4 112.92 28.23 3.42 **
      Temperature × CCM 4 75.87 18.97 2.30 *
      Algal density × CCM 4 7.84 1.96 0.24 ns
      Temperature × Algal density × CCM 8 109.20 13.65 1.65 ns
      Error 555 4583.11 8.26  
   Total number of offspring (NO)        
      Temperature 2 20845.13 10422.57 41.61 ***
      Algal density 2 19628.62 9814.31 39.18 ***
      CCM 2 41237.25 20618.63 82.31 ***
      Temperature × Algal density 4 12119.60 3029.90 12.10 ***
      Temperature × CCM 4 9331.13 2332.78 9.31 ***
      Algal density × CCM 4 10472.76 2618.19 10.45 ***
      Temperature × Algal density × CCM 8 8752.73 1094.09 4.37 ***
      Error 555 139026.10 250.50  

MCM: M. macrocopa-conditioned medium; CCM: B. calyciflorus-conditioned medium.

DF: degrees of freedom; SS: sum of squares; MS: mean square; F: F-ratio.

ns: non-significant (P > 0.05).

*

Significant (P < 0.05).

**

Highly significant (P < 0.01).

***

Very highly significant (P < 0.001).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.