Table 1.

Hydrogen and methane emission rates of living termites under different headspace gases

Termite speciesaFresh wt (mg)H2 emission rate (nmol g [fresh wt]−1 h−1) for n samplesbCH4 emission rate (nmol g [fresh wt]−1 h−1) for n samplesb
AirN2nAirN2nAir + H2cN2 + H2cn
Nasutitermes arborum(w)2.8122 ± 22180 ± 1641431491784 ± 28838 ± 312
Reticulitermes flavipes(w)4.0165 ± 68244 ± 1288116 ± 22131 ± 84587 ± 180695 ± 1334
Anoplotermes pacificus(s)1.1195 ± 64399 ± 1465260 ± 69369 ± 7221,674 ± 1101,831 ± 2662
Cubitermes orthognathus(s)6.8NDd ND158 ± 28160 ± 2931,123 ± 881,176 ± 2543
Noditermes sp. (s)3.7285 ± 110449 ± 219313419611,338 ± 3521,311 ± 203
Procubitermes sp. (s)11.5127 ± 48196 ± 54318120011,015 ± 1651,462 ± 1693
Thoracotermes macrothorax(s)11.8122 ± 95225 ± 563168 ± 3523831,461 ± 3381,372 ± 3163
  • a Wood-feeding (w) or soil-feeding (s) characteristic is indicated in parentheses.

  • b Rates are given as means ± standard deviations of n independent assays.

  • c H2 partial pressure was 20 kPa.

  • d ND, not determined.