deep cores

Dataset: 

Study number: 

394

Data set ID: 

210394001

Date range: 

1986-01-20 to 1986-10-13

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

**We addressed the question, are microarthropod assemblages present in soils throughout the rhizosphere of a deep-rooted desert plant? If microarthropods are present, what is the taxonomic and functional structure of that assemblage?

The presence of a generalist microarthropod assemblage would suggest functional relationships among deep soil biota similar to the relationships documented in shallow soils. Data set consists of microarthropods and microarthropod numbers found at different soil depths associated with four mesquite ecosystems (playa, coppice dune, arroyo, and grassland).

Data download: 

Description: 

Data file information for the following Jornada data set: Deep Soil Microarthropods

LTER Core Area(s): 

Dataset: 

Study number: 

394

Data set ID: 

210394002

Date range: 

1986-01-01 to 1986-09-30

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

Soil cores were collected under mesquite (Prosopis glandulosa) trees at playa, wash, sand dune, and grassland sites on the Jornada LTER site to depths of 15, 9, 7, and 4 m. Soil cores (to 4 m) were also taken under creosote bush (Larrea tridentata) near the wash site. Soils were extracted and analyzed for micronutrients, Zn, Cu, Fe, and Mn.

Soil cores were collected under mesquite (Prosopis glandulosa) trees at playa, wash, sand dune, and grassland sites on the Jornada LTER site to depths of 15, 9, 7, and 4 m. Soil cores (to 4 m) were also taken under creosote bush (Larrea tridentata) near the wash site. Soils were extracted and analyzed for micronutrients, Zn, Cu, Fe, and Mn.

Data download: 

Description: 

Data file information for the following Jornada data set: Deep soil core micronutrients

LTER Core Area(s): 

Dataset: 

Study number: 

394

Data set ID: 

210394003

Date range: 

1986-01-01 to 1986-01-30

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

Soil cores collected under mesquite (Prosopis glandulosa) trees at several sites and under Larrea at one site at the Jornada LTER were incubated to determine the N-mineralization potential.

Soil cores collected under mesquite (Prosopis glandulosa) trees at several sites and under Larrea at one site at the Jornada LTER were incubated to determine the N-mineralization potential.

Data download: 

File Download mcnmp.dat (16.92 KB)

Description: 

Data file information for the following Jornada data set: Deep Soil Cores N-Mineralization

LTER Core Area(s): 

Dataset: 

Study number: 

4

Data set ID: 

210394004

Date range: 

1986-01-01 to 1986-09-30

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

*We have hypothesized that large rhizobial population densities can occur at considerable depths in woody legume systems where deep moisture also occurs. However, associated with deep soil environments are low concentrations of soil nutrients that might affect nodulation and also limit survival of free-living rhizobia.

The objectives of this study were to (1) determine if results from a previous study of a mesquite woodland utilizing groundwater in the Californian Sonoran desert were generizable to mesquite systems in other deserts where root depth varied with ecosystem type and (2) examine possible relationships of soil properties and host-plant phenology to rhizobial concentrations. Data set contains total nitrogen, total phosphorous,NH4-N, NO3-N, PO4-P, percent moisture, total roots, tap roots, fine roots, vesicular arbuscular mycorrhiza, rhizobia Most Probable Number, and Rhizobia log (1+MPN).

Data download: 

Description: 

Data file information for the following Jornada data set: Deep Soil Core Nutrients

LTER Core Area(s): 

Dataset: 

Study number: 

394

Data set ID: 

210394005

Date range: 

1986-01-01 to 1986-09-30

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

*We have hypothesized that large rhizobial population densities can occur at considerable depths in woody legume systems where deep moisture also occurs. However, associated with deep soil environments are low concentrations of soil nutrients that might affect nodulation and also limit survival of free-living rhizobia.

The objectives of this study were to (1) determine if results from a previous study of a mesquite woodland utilizing groundwater in the Californian Sonoran desert were generizable to mesquite systems in other deserts where root depth varied with ecosystem type and (2) examine possible relationships of soil properties and host-plant phenology to rhizobial concentrations. Data set contains analyses for SO4, sodium, calcium, manganese, sodium-absorption-ration, total cations, electrical conductivity, pH, saturation percentage, total carbon, inorganic carbon, organic carbon, and gravimetric soil moisture.

Data download: 

Description: 

Data file information for the following Jornada data set: Deep Core Soil Saturation Extracts

LTER Core Area(s): 

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