HAF1

  
                         View of site 1                                                    Typical crust at site 1

Holloman Airforce Base, Otero Co., New Mexico, USA.  32° 55.086' N latitude, 106° 07.201' W longitude; elevation 4282 feet.  Date of sampling:  17 July 1998.

Mean thickness of algal crust:  4.0 mm
Mean thickness of lichen crust:  15.6 mm

Cover summary:

Type Cover               % Cover
Shrubs                             0.0
Annuals                          0.0
Perennial grasses        18.9
Perennial forbs              0.0
Algal crust                   16.5
Bryophytes                    0.0
Lichens                           8.8
Bare Soil                       48.6
Rock                               0.0
Gravel                            0.0
Litter                              7.2
Cactus                            0.0

Chlorophyll a (ng/g): 3306.21
N fixation rate (mmol/n2/m2/hr):  94.41
Soil texture class:  clay loam

HAF2

 
                        View of site 2                                                        Typical crust at site 2

Holloman Airforce Base, Otero Co., New Mexico, USA.  Dune site.  32° 53.311' N latitude, 106°09.274' W longitude; elevation 4206 feet.  Date of sampling:  18 July 1998.

Dominants vascular plants at the site: 

Other plants: 

Mean thickness of algal crust:  8.4 mm
Mean thickness of lichen crust:  19.2 mm

Cover summary:

Type Cover              % Cover
Shrubs                           1.6
Annuals                        0.0
Perennial grasses        0.8
Perennial forbs            0.0
Algal crust                  42.8
Bryophytes                  0.0
Lichens                       31.2
Bare Soil                       8.0
Rock                              0.0
Gravel                           0.0
Litter                           15.6
Cactus                          0.0