Table 2 Pearson product moment correlation (correlation coefficient and its significance—rP) between the studied morphological and photophysiological parameters of Potamogeton perfoliatus plants and their position (depth), light intensity (I) and red far-red ratio (r/fr) of the studied leaves within the water column in Lake Balaton.

From: Vertical optical complexity shaped by submerged macrophytes

 

depth

r/fr

I

r

P

r

P

r

P

α

− 0.669

 

0.577

 

0.562

 

ETRmax

− 0.824

**

0.810

**

0.803

**

Ik

− 0.743

*

0.744

*

0.732

*

Fv/Fm

0.766

*

− 0.879

**

− 0.905

**

qN

− 0.907

***

0.909

***

0.909

***

qP

− 0.905

***

0.893

**

0.883

**

length

0.559

 

− 0.729

*

− 0.755

*

width

− 0.348

 

0.287

 

0.292

 

LA

0.217

 

− 0.363

 

− 0.375

 

perimeter

0.393

 

− 0.585

 

− 0.615

 

circularity

− 0.433

 

0.626

 

0.674

*

total chl

0.581

 

− 0.740

*

− 0.780

*

chla/chlb

0.558

 

− 0.722

*

− 0.763

*

chl/car

0.596

 

− 0.751

*

− 0.789

*

  1. The shown parameters are the maximum quantum yield for whole-chain electron transport (α), maximum electron transport capacity (ETRmax), the theoretical saturation light intensity (Ik), maximum quantum efficiency of PSII (Fv/Fm), non-photochemical quenching (qN), photochemical quenching (qP), length, width, leaf area (LA), perimeter and circularity of leaves, total chlorophyll (total chl), chlorophyll a to b ration (chla/chlb), total chlorophyll to carotenoid ratio (chl/car). The significance of the correlations: *P < 0.05, **P < 0.01, ***P < 0.001.
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