fluffgrass

Dataset: 

Study number: 

372

Data set ID: 

210372001

Date range: 

1984-08-20 to 1985-12-22

Original investigator: 

Walter G Whitford

Data contact: 

Abstract: 

*Changes in microarthropod assemblages were monitored in six types of decomposing surface leaf-litter confined in mesh bags and set across a Chihuahuan Desert watershed for 17 months.

The following hypotheses were tested: 1) microarthropod density and diversity are higher in soils with maximum surface litter accumulation, and 2) temporal patterns of density and diversity are more dependent on seasonal factors and physical disturbances than on the decompositional stage of the litter.

Data download: 

Description: 

Data file information for the following Jornada data set: Transect Leaf-litter Microarthropod Data

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385008

Date range: 

1986-06-15 to 1987-01-15

Original investigator: 

Solange I Silva

Data contact: 

Abstract: 

Twenty 6 x 6 m plots were established with a 3 m buffer between plots. Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment).

Soil total Nitrogen was determined in the rhizosphere of fluffgrass.

Data download: 

Description: 

Data file information for the following Jornada data set: Fluff grass soil total nitrogen

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385009

Original investigator: 

John Anderson

Abstract: 

A mesocosm experiment was conducted on fluff grass plants to look at the effect of exclusion of mites (with chlordane), nematodes (with NEMACUR), mites and nematodes, on soil available, total and microbial nitrogen. Numbers of microarthropods per 1000g of soil is recorded in this data file.

A mesocosm experiment was conducted on fluff grass plants to look at the effect of exclusion of mites (with chlordane), nematodes (with NEMACUR), mites and nematodes, on soil available, total and microbial nitrogen. Numbers of microarthropods per 1000g of soil is recorded in this data file.

Data download: 

Description: 

Data file structure for the following Jornada data set: Mesocosm microarthropod numbers

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385007

Date range: 

1986-06-16 to 1986-08-16

Original investigator: 

Solange I Silva

Data contact: 

Abstract: 

Twenty 6 x 6 m plots were established with a 3 m buffer between plots. Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment).

Measurements are taken on Erioneuron pulchellum at monthly intervals. Three randomly located subsamples are collected from each plot. Data set contains plant diameters, mites soil weight, root weight, nematode soil weight, root total nitrogen, and nematode number.

Data download: 

Description: 

Data file information for the following Jornada data set: Fluff grass plant dynamics

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385006

Date range: 

1986-11-15 to 1987-02-15

Original investigator: 

Solange I Silva

Data contact: 

Abstract: 

An ion exchange resin bag technique (Binkley 1984, Lajtha 1988) was used to determine N availability in the rhizosphere of fluffgrass. Ion exchange resin bags were used to determine NH4. Twenty 6 x 6 m plots were established with a 3 m buffer between plots.

Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment). Two CA-bags were placed in the rhizosphere of a fluffgrass in each plot. Bags were left in the field 3 months, collected, brought to the lab and analyzed for NO3.

Data download: 

Description: 

Data file information for the following Jornada data set:

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385005

Date range: 

1986-11-15 to 1987-02-15

Original investigator: 

Solange I Silva

Data contact: 

Abstract: 

An ion exchange resin bag technique (Binkley 1984, Lajtha 1988) was used to determine N availability in the rhizosphere of fluffgrass. Ion exchange resin bags were used to determine NO3. Twenty 6 x 6 m plots were established with a 3 m buffer between plots.

Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment). 8 AN-bags were placed in the rhizosphere of a fluffgrass in each plot. Bags were left in the field 3 months, collected, brought to the lab and analyzed for NO3.

Data download: 

Description: 

Data file information for the following Jornada data set: Fluffgrass anion exchange resins bags for NO3

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385004

Date range: 

1986-03-15 to 1986-09-15

Original investigator: 

Solange I Silva

Data contact: 

Abstract: 

This data set consists of periodic size measurements of permanently marked individual fluff grass plants. Measurements were taken in March, July, and September 1986. Twenty 6 x 6 m plots were established with a 3 m buffer between plots.

Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment). Three randomly located subsamples were taken from each plot.

Data download: 

Description: 

Data file information for the following Jornada data set: Fluff grass plant growth

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385003

Date range: 

1986-05-15 to 1986-07-15

Original investigator: 

Solange I Silva

Data contact: 

Abstract: 

Dry weight biomass and total nitrogen were determined for flowers, green leaves and yellow and grey leaves of fluffgrass plants collected from plots. Twenty 6 x 6 m plots were established with a 3 m buffer between plots.

Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment).

Data download: 

Description: 

Data file information for the following Jornada data set: Fluff grass plant total nitrogen

LTER Core Area(s): 

Dataset: 

Study number: 

385

Data set ID: 

210385001

Date range: 

1986-12-05 to 1987-04-08

Original investigator: 

Solange I Silva

Data contact: 

Abstract: 

A mesocosm experiment was conducted on fluff grass (Erioneuron pulchellum) plants to look at the effect of exclusion of mites (with chlordane), nematodes (NEMACUR), mites and nematodes, on soil available, total and microbial nitrogen.

A mesocosm experiment was conducted on fluff grass (Erioneuron pulchellum) plants to look at the effect of exclusion of mites (with chlordane), nematodes (NEMACUR), mites and nematodes, on soil available, total and microbial nitrogen.

Data download: 

Description: 

Data file information for the following Jornada data set: Fluff grass mesocosm: mites and nematodes

LTER Core Area(s): 

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