mesquite

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): 

Dataset: 

Study number: 

394

Data set ID: 

210394006

Date range: 

1986-10-01 to 1986-10-30

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

**The objective of the present research was to determine whether there have been changes in the structure and function of the surface (0-20cm) soil system, the zone most affected by litter decomposition, which is associated with the rapid movement of mesquite from historical habitats (arroyo and playa fringe) into recent habitats (grassland and dunes).

We hypothesized that the soil biotic communities would be poorly developed in the recent mesquite habitats because of lower soil C and nutrient concentrations. Data set contains microarthropod code, order, family, total number of mites, and trophic group for microarthropods sampled at two depth ranges in the top 20 cm of soil.

Data download: 

Description: 

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

LTER Core Area(s): 

Dataset: 

Study number: 

394

Data set ID: 

210394007

Date range: 

1986-10-01 to 1986-10-30

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

**The objective of the present research was to determine whether there have been changes in the structure and function of the surface (0-20cm) soil system, the zone most affected by litter decomposition, which is associated with the rapid movement of mesquite from historical habitats (arroyo and playa fringe) into recent habitats (grassland and dunes).

We hypothesized that the soil biotic communities would be poorly developed in the recent mesquite habitats because of lower soil C and nutrient concentrations. Data set contains Baerman Funnel extracted nematodes (fungal feeders, bacterial feeders, omnivore-predator, total plant parasites, total nematodes) and Elutriator extracted nematodes (fungal feeders, bacterial feeders, omnivore-predator, total plant parasites, total nematodes).

Data download: 

Description: 

Data file information for the following Jornada data set: Surface Soil Nematodes

LTER Core Area(s): 

Dataset: 

Study number: 

386

Data set ID: 

210386011

Date range: 

1987-05-24 to 1987-12-12

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

[Mesquite root tube soil nutrients from soil cores collected under mesquite (Prosopis glandulosa) at the dune, playa, and grassland sites. Data consists of NO3, NH4, and soil H2O (percent).]

[Mesquite root tube soil nutrients from soil cores collected under mesquite (Prosopis glandulosa) at the dune, playa, and grassland sites. Data consists of NO3, NH4, and soil H2O (percent).]

Data download: 

Description: 

Data file information for the following Jornada data set: Mesquite Root Tube Soil Nutrients

LTER Core Area(s): 

Dataset: 

Study number: 

386

Data set ID: 

210386010

Date range: 

1987-05-24 to 1987-12-12

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

[Soil mite numbers associated with soil cores collected under mesquite {Prosopis glandulosa) at the dune, playa and grassland sites.]

[Soil mite numbers associated with soil cores collected under mesquite {Prosopis glandulosa) at the dune, playa and grassland sites.]

Data download: 

Description: 

Data file information for the following Jornada data set: Mesquite Soil Mites

LTER Core Area(s): 

Dataset: 

Study number: 

386

Data set ID: 

210386004

Date range: 

1988-03-01 to 1989-10-30

Original investigator: 

Ross Virginia

Abstract: 

Five mesquite dunes were irrigated by pumping water from a storage tank located 200 m away. Five nonirrigated dunes served as control. Soil samples were collected from mesquite trees at control and watered sites, and analyzed for the number of rhizobia nodules. This study is complete.

Five mesquite dunes were irrigated by pumping water from a storage tank located 200 m away. Five nonirrigated dunes served as control. Soil samples were collected from mesquite trees at control and watered sites, and analyzed for the number of rhizobia nodules. This study is complete.

Data download: 

Description: 

The number of rhizobia nodules.

The number of rhizobia nodules.

LTER Core Area(s): 

Dataset: 

Study number: 

386

Data set ID: 

210386003

Date range: 

1988-05-01 to 1989-10-30

Original investigator: 

Ross Virginia

Abstract: 

Plant and soil samples were collected from mequite dunes sites which had not been irrigated (control)  or had been irrigated (treatment) with water. Soil samples were collected (hand augered) under mesquite (Prosopis glandulosa) trees  to three depths, 0-50 and 50-100, and 100-150cm. Soil samples were placed in plastic bags, tied, and stored in portable coolers.

Soil samples were analyzed for zinc , cupper, iron, and manganese. Plant tissue was analyzed for total nitrogen and total phosphorous. This study has been completed.

Data download: 

Description: 

LTER Core Area(s): 

Dataset: 

Study number: 

386

Data set ID: 

210386009

Date range: 

1987-05-09 to 1987-10-26

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

Mesquite tissues (leaf, stem, flowers, pods) were collected in conjunction with phenology studies and natural abundance of N15 during 1986 and 1987. These were digested and analyzed for total Kjeldahl nitrogen and total phosphorous.

Mesquite tissues (leaf, stem, flowers, pods) were collected in conjunction with phenology studies and natural abundance of N15 during 1986 and 1987. These were digested and analyzed for total Kjeldahl nitrogen and total phosphorous.

Data download: 

Description: 

Data file information for the following Jornada data set: Mesquite Tissue Nutrients - 1987

LTER Core Area(s): 

Dataset: 

Study number: 

386

Data set ID: 

210386008

Date range: 

1986-04-23 to 1986-10-01

Original investigator: 

Ross Virginia

Data contact: 

Abstract: 

Mesquite tissues (leaf, stem, flowers, pods) were collected in conjunction with phenology studies and natural abundance of N15 during 1986 and 1987. These were digested and analyzed for total nitrogen (Kjeldahl) and total phosphorous.

Mesquite tissues (leaf, stem, flowers, pods) were collected in conjunction with phenology studies and natural abundance of N15 during 1986 and 1987. These were digested and analyzed for total nitrogen (Kjeldahl) and total phosphorous.

Data download: 

Description: 

Data file information for the following Jornada data set: Mesquite Tissue Nutrients - 1986

LTER Core Area(s): 

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