Depth distribution of zooplankton in relation to limnological gradients under different stratification and interannual regimes in a deep, tropical crater lake

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Table 7

Spearman rank correlation between species densities of zooplankton and limnological variables during 2005 and 2006.

Species	Stratified			Mixing			Restratifying

	DO	Temp.	Phyto. biomass	DO	Temp.	Phyto. biomass	DO	Temp.	Phyto. biomass
2005
Copepod adults	0.57^*	0.56^*	0.56^*	0.17^*	0.08	0.04	0.33^*	0.38^*	0.49^*
Copepodites	0.74^*	0.74^*	0.56^*	0.51^*	0.19^*	0.12^*	0.58^*	0.59^*	0.66^*
Nauplii	0.64^*	0.64^*	0.56^*	0.45^*	0.11^*	0.09^*	0.43^*	0.58^*	0.62^*
H. intermedia	0.75^*	0.75^*	0.34	0.17^*	−0.01^*	0.05	0.50^*	0.51^*	0.28^*
Chaoborus	−0.61^*	−0.59^*	−0.40	−0.28	−0.17^*	−0.53^*	−0.05^*	0.13^*	0.03

2006
Copepod adults	0.37^*	0.34^*	0.33^*	0.44^*	0.34^*	0.40	0.46^*	0.46^*	0.26^*
Copepodites	0.35^*	0.49^*	0.39^*	0.49^*	0.59^*	0.37^*	0.76^*	0.75^*	0.58^*
Nauplii	0.35^*	0.34^*	0.32^*	0.45^*	0.29^*	0.41^*	0.43^*	0.54^*	0.36^*
H. intermedia	−0.42^*	−0.65^*	−0.55^*	−0.39^*	−0.52^*	−0.55	0.70^*	0.63^*	0.40
Chaoborus	−0.42^*	−0.65^*	−0.55^*	−0.39^*	−0.52^*	−0.62	−0.59^*	−0.55^*	−0.46^*

Significance of the correlation and absence of (*) shows that relationship is not significant. Number of observations for stratified (n = 44), mixing (n = 55), restratifying (n = 44).

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