Hubbard Brook Forest Floor Data - Watershed 6 1992 - 80 15x15 cm excavated blocks
Summary

  Oie total dry mass (80oC ODW)  ave =   3.30 kg/m2  N=80
  Oa  total dry mass (80oC ODW)  ave =  13.45 kg/m2   
  total dry mass (80oC ODW)      ave =  16.75 kg/m2



  Oie Organic matter dry mass (80oC ODW) ave =   2.59 kg/m2  N=80
  Oa  Organic matter dry mass (80oC ODW) ave =   5.08 kg/m2
  total organic matter dry mass(80oC ODW) ave =  7.67 kg/m2



  Oie sticks and roots dry mass (80oC ODW) ave =   0.17 kg/m2  N=80
  Oa  sticks and roots dry mass (80oC ODW) ave =   0.63 kg/m2
  total sticks and roots dry mass(80oC ODW) ave =  0.80 kg/m2



  Average forest floor thickness (cm) =  7.8 cm

  Organic matter % ODW
        LOI for Oie        ave =  79.64 %  N=80
        LOI for Oa         ave =  37.09 %  N=78
 


Elemental analysis:

(For "Concentration" averages, N=80 for Oie and N=78 for Oa--
 we are not including zeroes for 2 plots with no Oa.
 For "Amounts" averages, N=80)



Oie
        Concentration            Amounts
Ca        3890   ug/g              11.44  g/m2
Mg         454   ug/g               1.42  g/m2
K          978   ug/g               3.10  g/m2
P         1091   ug/g               3.67  g/m2         
Mn         621   ug/g               1.90  g/m2       
Cu         13.3  ug/g               0.04  g/m2      
Zn          80   ug/g               0.25  g/m2
Pb          64   ug/g               0.22  g/m2



Oa
        Concentration            Amounts
Ca         640   ug/g               9.27  g/m2
Mg         229   ug/g               3.47  g/m2
K          673   ug/g               8.98  g/m2
P          849   ug/g              11.96  g/m2         
Mn         197   ug/g               3.23  g/m2       
Cu          8.6  ug/g               0.12  g/m2      
Zn          30   ug/g               0.40  g/m2
Pb          68   ug/g               0.80  g/m2