Mofette Vegetation as an Indicator for Geogenic CO₂ Emission: A Case Study on the Banks of the Laacher See Volcano, Vulkaneifel, Germany

Figure 11

(a–b) CCA (CANOCO 4.5) of selected soil parameters, CO₂ concentrations in (a) 20 cm and (b) 40 cm soil depths (arrows), and plant species (triangles) in the U1 mofette. AnemNemo: Anemone nemorosa; CareAcut: Carex acutiformis; LoniPeri: Lonicera periclymenum; MeliMuti: Melica mutica; PoaNemo: Poa nemoralis; RanuFica: Ranunculus ficaria; StelHolo: Stellaria holostea; SymphAlb: Symphoricarpos album; TiliPlat: Tilia platyphyllos; VincMino: Vinca minor. Eigenvalues for (a): 0.529, 0.425, 0.267, and 0.066, and (b): 0.460, 0.341, 0.210, and 0.046 (data sampling in February and May 2013).

(a)

(b)