completed

Data set status is completed, indicating that data is no longer being collected

Dataset: 

Study number: 

378

Data set ID: 

210378001

Abstract: 

Soil temperature data was acquired using a mechanical chart recorder of soil temperatures with thermistors at 5 cm and 20 cm soil depths at a site approximately 20 feet west of the Upper Trailer on the Jornada.

Data sources: 

data_JornadaStudy_378_upper_trailer_soil_temperature

LTER Core Area(s): 

Dataset: 

Study number: 

40

Data set ID: 

210401001

Abstract: 

Soil water potential recorded on data sheets for psychrometers along treatment and control transects every 5 stations at 5cm, 15cm and 30cm depths. Soil temperatures at these depths and calibration slope and intercept for each psychrometer are included in order to convert microvolt readings to -bar readings.

Data sources: 

data_JornadaStudy_401_transect_soil_water_potential_1986_to_1987

LTER Core Area(s): 

Dataset: 

Study number: 

40

Data set ID: 

210401002

Abstract: 

Soil water potential recorded on data sheets for psychrometers along treatment and control transects every 5 stations at 5cm, 15cm and 30cm depths. Soil temperatures at these depths and calibration slope and intercept for each psychrometer are included in order to convert microvolt readings to -bar readings.

Data sources: 

data_JornadaStudy_401_transect_soil_water_potential_1988

LTER Core Area(s): 

Dataset: 

Study number: 

375

Data set ID: 

210375001

Abstract: 

Data set includes bi-weekly records of number of termites observed within and beneath each of 4 rolls of toilet paper placed at each of 91 stations on treatment and control transects. Observations of presence of termite activity at each roll (paper eaten, cartons constructed) are also included.

Data sources: 

data_JornadaStudy_375_transect_ termite

LTER Core Area(s): 

Dataset: 

Data set ID: 

210400001

Abstract: 

Levels of basic cations (Ca, Mg, Na, K) extractable in 1N ammonium acetate (NH4Ac) from soils collected at stations C01 through C90 along the LTER-I Control transect.

Data sources: 

data_JornadaStudy_400_transect_soil_cation

LTER Core Area(s): 

Dataset: 

Study number: 

400

Data set ID: 

210400002

Abstract: 

PO4-P levels in CaCl2 and NaHCO3 extracts of soils collected at each station along transect. Moisture content of soil samples is also included. No soil samples were collected along the fertilized (treated transect) in January 1985; January 1986 data contains both fertilized (treated) and control transect samples.

Data sources: 

data_JornadaStudy_400_transect_soil_phosphate

LTER Core Area(s): 

Dataset: 

Study number: 

400

Data set ID: 

210400003

Abstract: 

Variation in the soil from place to place is a fact of nature and is substantial. It is a major source of uncertainty in soil survey and causes many of the difficulties of applying mathematics to the study of soil. Soil variability within small areas can be studied by using a straight line (transect) laid over a tract of known distance and can be sampled and observed equidistantly. Line transects give an indication of both the local and the general variation. The technique, however, may depend strongly on direction of the transect. Soil along the LTER I Control transect was sampled at 30 meter intervals from station C01 through C89. Soil characteristics were measured at 4 depths (30, 60, 90, and 120 cm) for the percent composition of clay, silt, sand, very coarse sand, coarse sand, medium sand, fine sand, very fine sand, calcium carbonate, organic carbon and coarse fragments greater than 2mm.

Data sources: 

data_JornadaStudy_400_transect_soil_particle_size

LTER Core Area(s): 

Dataset: 

Study number: 

400

Data set ID: 

210400004

Abstract: 

Total nitrogen in soil was determined on control and treatment (fertilized) transects by Kjeldahl digestion.

Data sources: 

data_JornadaStudy_400_transect_soil_total_nitrogen

LTER Core Area(s): 

Dataset: 

Study number: 

399

Data set ID: 

210399001

Abstract: 

NO3 + NO2-N and NH4-N levels of soil samples collected at each station along transect. Moisture content of soil samples is also included.

Data sources: 

data_JornadaStudy_399_transect_soil_nitrogen

LTER Core Area(s): 

Dataset: 

Study number: 

387

Data set ID: 

210387003

Abstract: 

*We designed a study to examine the long-term spatial and temporal patterns of mass loss, changes in nitrogen content and chemical composition during decomposition of roots in a desert watershed. Because nitrogen availability has been hypothesized to affect decomposition rates of buried litter in deserts, we studied decomposition of roots along a transect on a desert watershed that had been fertilized with ammonium nitrate and compared these results with the decomposition of roots along a transect that had not been fertilized.

Data sources: 

data_JornadaStudy_387_transect_root_decomposition_weight

LTER Core Area(s): 

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