Metadata for: Diversity, Productivity and Soil Data for North
American Grasslands
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General Dataset Metadata:
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Abstract:
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This research program
was designed to collect productivity, diversity and soil data in Northern California grasslands. Data collected include species
richness, presence absence of plant species, peak standing biomass
and nitrogen and phosphorus soil content. The relationship between
diversity and productivity can take many different shapes. Soil
nutrients can affect species composition, diversity and
productivity. This research program will attempt to investigate
soil nutrients to as a possible factor in determining the shape of
the diversity productivity curve. Funding was used to collect
richness, plant presence / absence data, biomass and soil nutrient
data.
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Keywords:
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Richness,
productivity, grasslands, biomass, northern California, soil nutrients
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Usage Rights:
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This dataset is publicly available through the
Knowledge Network for Biocompletxity.
www.knb.ecoinformatics.org
Please acknowledge the
Knowledge Network for Biocomplexity, NSF
Grant 12345 and Dr. Jane Doe in any publications that use this
data.
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Individual:
Owner
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Dr. Jane Doe
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Position
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Associate Professor
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Address:
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Department
of Biology, Northern California University,
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University Town, CA 95666 USA
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Phone:
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Email Address:
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Web Address:
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Individual:
Primary Contact
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John Smith
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Position
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Data Manager
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Address:
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Department
of Biology, Northern California University,
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University Town, CA 95666 USA
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Phone:
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Email Address:
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Web Address:
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Organization:
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Department of
Biology, Northern California University
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Article Citation:
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Author:
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J. Doe
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Author:
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J. Smith
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Date:
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2002
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Title:
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Diversity, productivity and soil nutrients
at a Northern California grassland
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Journal:
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Plantae
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Volume:
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23
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Issue:
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2
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Page Range:
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1-10
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Geographic Metadata:
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Geographic Description:
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Data were collected in the
coastal mountains of Northern
California, in the Valley
Oak Reserve. The Valley Oak Reserve is adjacent to and managed by
Northern Caifornia University (NCU). NCU is
located in University Town in Sonoma County, approximately 150 km northeast of San Francisco. The Valley Oak Reserve is located on the east
facing slope of the California coastal mountains. The area is primarily oak (Quercus spp) savannah and grasslands. The reserve is 100 km² in area.
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Bounding Coordinates:
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Longitude:
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-120°15'00"
degrees
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-120°30'00"
degrees
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Latitude:
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39°00'00"
degrees
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38°45'00"
degrees
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Temporal Metadata:
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Temporal
Description
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The observations in the
data were made in the late spring, at approximately peak biomass. All
observations were made during daylight hours. Observations were made
during the following range of dates.
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Begin:
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5/30/2002
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End:
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06/05/2003
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Taxonomic Metadata:
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Taxonomic Authority
Citation:
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Type:
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Book
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Author:
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W. L. Jepson
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Editor:
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J. C. Hickman
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Date:
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1993
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Title:
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The Jepson Manual: Higher Plants of California
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Publisher:
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University
of California Press
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Publication Place:
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Berkeley
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General Info
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All herbaceous plant species
were recorded.
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Classification:
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Taxonomic Level:
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Family
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Taxonomic Name:
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Poaceae
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Taxonomic Level:
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Genus Species
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Taxonomic Name:
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Avena fatua
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Classification:
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Taxonomic Level:
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Family
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Taxonomic Name:
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Poaceae
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Taxonomic Level:
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Genus Species
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Taxonomic Name:
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Bromus hordeaceus
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Classification:
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Taxonomic Level:
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Family
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Taxonomic Name:
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Liliaceae
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Taxonomic Level:
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Genus Species
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Taxonomic Name:
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Calochortus lutens
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Classification:
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Taxonomic Level:
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Family
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Taxonomic Name:
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Papaveraceae
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Taxonomic Level:
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Genus Species
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Taxonomic Name:
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Eschscholzia californica
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Common Name:
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California poppy
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Classification:
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Taxonomic Level:
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Family
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Taxonomic Name:
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Poaceae
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Taxonomic Level:
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Genus Species
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Taxonomic Name:
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Nassella pulchra
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Common Name:
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Bunchgrass
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Methods Metadata:
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General Sampling Design
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♦
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Twenty five square1m² plots
were randomly placed throughout the Valley Oak Reserve. Due to
destructive biomass harvest, plots are relocated each year.
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♦
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Two plastic sample bag (Ziplock) are labeled with the randomly assigned plot
number and contents (plant or soil). If more than one bag is needed,
all bags are labeled with the contents, plot number and bag number
(i.e. the second of four bags of plant clippings from plot 6 will be
labeled "Plant, Plot 6, Bag 2/4")
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Species Presence- Absence
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At each plot, one person,
starting at the south-east corner of the plot, identifies each plant
according to the Jepson manual. Species names are recorded in the field
notebook.
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Species Richness
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Species names are used to
calculate species richness per plot.
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Biomass Measurement
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All plant material within
each 1 m2 plot is clipped at soil level and placed in the
sample bag.
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Sample bags containing plant
matter are brought to the laboratory. If wet, plant matter is dried
using paper towels.
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Plant material is dried in
a drying oven at 80 degrees C for 24 (+/-2) hours.
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Plant matter is weighed
within 2 hours of drying.
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Soil Data Measurements
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Approximately 0.5 g of
soil, free from plant debris, is collected from the middle of the plot.
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Soil is placed in
appropriate sample bag.
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Soil samples are placed
into aluminum sample trays and placed into a drying oven and dried at
80 degrees C for 24 (+/- 2) hours.
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Soil is ground using a
ball mill until powedery and weighed.
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Soil sample is analyzed
for Phosphorus and Nitrogen using a SoilPro
v. 10 machine. All procedures for this machine
are followed.
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Quality Control
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♦
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All sampling was done by
Jane Doe and John Smith.
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