| Summary Information |
| Effects of Multiple Resource Additions on Community and Ecosystem Processes: NutNet
Seasonal Biomass and Seasonal and Annual NPP Data at the Sevilleta National Wildlife
Refuge, New Mexico
|
| Creator: |
| Individual: |
Scott Collins |
| Organization: |
SEV LTER |
| Physical Address: |
| Delivery Address: |
Department of Biology, MSC03 2020, 1 University of New Mexico |
| City: |
Albuquerque |
| Locality: |
NM |
| Postal Code: |
87131 |
|
| Email: |
scollins@sevilleta.unm.edu |
| System ID: |
12275 |
|
| Publication Date: |
2015 |
| Language: |
english |
| Abstract: |
| Two of the most pervasive human impacts on ecosystems are alteration of global nutrient
budgets and changes in the abundance and identity of consumers. Fossil fuel combustion
and agricultural fertilization have doubled and quintupled, respectively, global pools
of nitrogen and phosphorus relative to pre-industrial levels. In spite of the global
impacts of these human activities, there have been no globally coordinated experiments
to quantify the general impacts on ecological systems. This experiment seeks to determine
how nutrient availability controls plant biomass, diversity, and species composition
in a desert grassland. This has important implications for understanding how future
atmospheric deposition of nutrients (N, S, Ca, K) might affect community and ecosystem-level
responses. This study is part of a larger coordinated research network that includes
more than 40 grassland sites around the world. By using a standardized experimental
setup that is consistent across all study sites, we are addressing the questions of
whether diversity and productivity are co-limited by multiple nutrients and if so,
whether these trends are predictable on a global scale.Above-ground net primary production
is the change in plant biomass, represented by stems, flowers, fruit and and foliage,
over time and incoporates growth as well as loss to death and decomposition. To measure
this change the vegetation variables, including species composition and the cover
and height of individuals, are sampled twice yearly (spring and fall) at permanent
1m x 1m plots within each site. Volumetric measurements are made using vegetation
data from permanent plots (SEV231, "Effects of Multiple Resource Additions on Community
and Ecosystem Processes: NutNet NPP Quadrat Sampling") and regressions correlating
species biomass and volume constructed using seasonal harvest weights from SEV157,
"Net Primary Productivity (NPP) Weight Data."
|
|
|
| Keywords: |
| Keyword: |
inorganic nutrients |
| Keyword: |
populations |
| Keyword: |
primary production |
| Keyword Thesaurus: |
Core Areas |
|
| Keywords: |
| Keyword: |
communities |
| Keyword: |
plant communities |
| Keyword: |
species |
| Keyword: |
plant species |
| Keyword: |
species lists |
| Keyword: |
plant species composition |
| Keyword: |
species diversity |
| Keyword: |
productivity |
| Keyword: |
net primary productivity |
| Keyword: |
annual net primary production |
| Keyword: |
biomass |
| Keyword: |
plant biomass |
| Keyword: |
aboveground biomass |
| Keyword: |
species composition |
| Keyword: |
seasonality |
| Keyword: |
primary production |
| Keyword: |
net primary production |
| Keyword: |
species interactions |
| Keyword: |
nutrients |
| Keyword: |
ecosystems |
| Keyword: |
terrestrial ecosystems |
| Keyword: |
grasslands |
| Keyword: |
vegetation |
| Keyword Thesaurus: |
LTER Controlled Vocabulary |
|
| Additional Information: |
| Additional Information on the Data Collection PeriodSpecies composition and net primary
production was sampled semiannually (spring and fall) in 2007, 2008, and 2009. Soil
was sampled and analyzed in the fall in 2007 and 2008. Plots were fertilized annually
starting in 2008.In August 2009, a wildfire burned all 40 of the NutNet plots causing
no Fall 2009 vegetation measurements.Special Codes for Vegetation Ids:SPORSP- Unknown
SporobolusSPSP- Unknown SphaeralceaUNKFO- Unknown Forb
|
|
| Intellectual Rights: |
| Data Policies |
| This dataset is released to the public and may be freely downloaded. Please keep the
designated Contact person informed of any plans to use the dataset. Consultation or
collaboration with the original investigators is strongly encouraged. Publications
and data products that make use of the dataset must include proper acknowledgement
of the Sevilleta LTER. Datasets must be cited as in the example below.
Muldavin, E. 2004. Sevilleta LTER Fertilizer NPP Study Dataset. Albuquerque, NM: Sevilleta
Long Term Ecological Research Site Database: SEV155. (Date of download)
A copy of any publications using these data must be supplied to the Sevilleta LTER
Information Manager.
|
|
|
| Distribution: |
| Online: |
| URL: |
http://sev.lternet.edu/node/7277 |
|
|
| Coverage: |
| Geographic Goverage: |
| Geographic Description: |
Location: Deep Well is located on McKenzie Flats and is site of the longest running
SEV LTER met station, number 40, which has been active since 1988. In addition to
studies of meteorological variables, core line-intercept vegetation transects and
line-intercept transects from the 1995 and 2001 Deep Well fires are sampled here.
The mini-rhizotron study, blue and black grama compositional comparison, blue and
black grama patch dynamics investigation, and kangaroo rat population assessement
are all ongoing here. Deep Well Blue/Black Grama Mixed is also the location of the
warming and monsoon experiments, as well as portions of the line-intercept and vegetation
removal studies.
On August 4, 2009, a lightning-initiated fire began on the Sevilleta National Wildlife
Refuge. By August 5, 2009, the fire had reached the area of Deep Well Blue/Black Grama
Mixed. While portions of this site were burned, the entirety was not. See individual
projects for further information on the effects of the fire.Vegetation: The vegetation
of Deep Well Blue/Black Grama Mixed is Chihuahuan Desert Grassland, dominated by black
grama (Bouteloua eriopoda) and blue grama (B. gracilis). Other grasses found at the
site include dropseeds (Sporobolus spp.) and threeawns (Aristida spp.). Shrubs are
uncommon but those that occur include Yucca glauca, Ephedra torreyi, and four-wing
saltbush (Atriplex canescens). Herbaceous plants include Plantago purshii, Hymenopappus
filifolius, and globe mallows (Sphaeralcea spp.).
,
|
| Bounding Coordinates: |
| West Bounding Coordinates: |
-106.7358 |
| East Bounding Coordinates: |
-106.7358 |
| North Bounding Coordinates: |
34.3592 |
| South Bounding Coordinates: |
34.3592 |
| Bounding Altitude: |
| Altitude Minimum: |
1600 |
| Altitude Maximum: |
1600 |
| Altitude Units: |
meter |
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|
|
| Temporal Coverage: |
| Date Range: |
| Begin Date: |
| Calendar Date: |
2008-05-13 |
|
| End Date: |
| Calendar Date: |
2012-01-10 |
|
|
|
|
| Contact: |
| Position Title: |
Information Manager |
| Organization: |
LTER Network Office |
| Physical Address: |
| Delivery Address: |
UNM Biology Department, MSC03-2020 |
| Delivery Address: |
1 University of New Mexico |
| City: |
Albuquerque |
| Locality: |
NM |
| Postal Code: |
87131-0001 |
| Phone: |
USA |
|
| Phone: |
505 277-2535 |
| Phone: |
505 277-2541 |
| Email: |
tech-support@lternet.edu |
| URL: |
http://www.lternet.edu |
|
| Contact: |
| Individual: |
Information Manager Sevilleta LTER |
| Organization: |
SEV LTER |
| Physical Address: |
| Delivery Address: |
1 University of New Mexico |
| City: |
Albuquerque |
| Postal Code: |
87131 |
|
| Phone: |
(505) 277-2109 |
| Phone: |
(505) 277.5355 |
| Email: |
data-use@sevilleta.unm.edu |
|
| Publication Place: |
Sevilleta LTER |
| Method Step: |
| Description: |
| Data Processing Techniques to Derive Biomass and NPP:Data from SEV231 and SEV157 are
used used to calculate seasonal and annual production of each species in each quadrat
for a given year. Allometric equations derived from harvested samples of each species
for each season are applied to the measured cover, height, and count of each species
in each quadrat. This provides seasonal biomass for winter, spring, and fall.Seasonal
NPP is derived by subtracting the previous season's biomass from the biomass for the
current season. For example, spring NPP is calculated by subtracting the winter weight
from the spring weight for each species in a given quadrat. Negative differences are
considered to be 0. Likewise, fall production is computed by subtracting spring biomass
from fall biomass. Annual biomass is taken as the sum of spring and fall NPP.
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| Data Table: |
| Entity Name: |
sev293_nutnetbiomass_20150325.txt |
| Entity Description: |
Data for Sev293. |
| Object Name: |
sev293_nutnetbiomass_20150325.txt |
| Data Format: |
| Text Format: |
| Number of Header Lines: |
1 |
| Record Delimiter: |
\r\n |
| Attribute Orientation: |
column |
| Simple Delimited: |
| Field Delimiter: |
, |
|
|
|
| Distribution: |
| Online: |
| URL: |
https://pasta.lternet.edu/package/data/eml/knb-lter-sev/293/155436/8c07ca715ea62f9e554c38a71a633578 |
|
|
| Coverage: |
| Temporal Coverage: |
| Date Range: |
| Begin Date: |
| Calendar Date: |
2008-01-01 |
|
| End Date: |
| Calendar Date: |
2014-12-12 |
|
|
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|
| Attribute List: |
| Attribute Name: |
year |
| Attribute Label: |
year |
| Attribute Definition: |
The year in which data was collected. |
| Storage Type: |
date |
| Measurement Scale: |
| Datetime: |
| Format String: |
YYYY |
|
|
| Attribute Name: |
Site |
| Attribute Label: |
Site |
| Attribute Definition: |
The site at which data was collected. |
| Storage Type: |
string |
| Measurement Scale: |
| Nominal: |
| Non Numeric Domain: |
| Enumerated Domain: |
| Code Definition: |
| Code: |
N |
| Definition: |
Nutritent Network site, located within Deep Well blue/black grama mixed grassland. |
|
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|
| Attribute Name: |
treatment |
| Attribute Label: |
treatment |
| Attribute Definition: |
The fertilizer regime applied to a quadrat for the Nutrient Network project (SEV231). |
| Storage Type: |
string |
| Measurement Scale: |
| Nominal: |
| Non Numeric Domain: |
| Enumerated Domain: |
| Code Definition: |
| Code: |
NPK |
| Definition: |
Nitrogen, phosphorus, and potassium added. |
|
| Code Definition: |
| Code: |
NP |
| Definition: |
Nitrogen and phosphorus added. |
|
| Code Definition: |
| Code: |
NK |
| Definition: |
Nitrogen and potassium added. |
|
| Code Definition: |
| Code: |
N |
| Definition: |
Nitrogen added. |
|
| Code Definition: |
| Code: |
PK |
| Definition: |
Phosphorus and potassium added. |
|
| Code Definition: |
| Code: |
P |
| Definition: |
Phosphorus added. |
|
| Code Definition: |
| Code: |
K |
| Definition: |
Potassium added. |
|
| Code Definition: |
| Code: |
C |
| Definition: |
Control/no fertilizer. |
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|
| Attribute Name: |
quad |
| Attribute Label: |
quad |
| Attribute Definition: |
The quadrat at which data was collected. |
| Storage Type: |
string |
| Measurement Scale: |
| Nominal: |
| Non Numeric Domain: |
| Text Domain: |
| Definition: |
The quadrat at which data was collected. |
|
|
|
|
| Attribute Name: |
species |
| Attribute Label: |
species |
| Attribute Definition: |
The Kartez code for a plant species as designated by the USDA Plants Database. |
| Storage Type: |
string |
| Measurement Scale: |
| Nominal: |
| Non Numeric Domain: |
| Text Domain: |
| Definition: |
The Kartez code for a plant species as designated by the USDA Plants Database. |
|
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|
| Attribute Name: |
wwt |
| Attribute Label: |
wwt |
| Attribute Definition: |
The calculated weight of live green biomass for a species in a quadrat in the winter.
|
| Measurement Scale: |
| Ratio: |
| Unit: |
|
| Standard Unit: |
gramsPerSquareMeter |
| Precision: |
0.01 |
| Numeric Domain: |
| Number Type: |
real |
|
|
|
| Attribute Name: |
swt |
| Attribute Label: |
swt |
| Attribute Definition: |
The calculated weight of live green biomass for a species in a quadrat in the spring. |
| Measurement Scale: |
| Ratio: |
| Unit: |
|
| Standard Unit: |
gramsPerSquareMeter |
| Precision: |
0.01 |
| Numeric Domain: |
| Number Type: |
real |
|
|
|
| Attribute Name: |
fwt |
| Attribute Label: |
fwt |
| Attribute Definition: |
The calculated weight of live green biomass for a species in a quadrat in the fall. |
| Measurement Scale: |
| Ratio: |
| Unit: |
|
| Standard Unit: |
gramsPerSquareMeter |
| Precision: |
0.01 |
| Numeric Domain: |
| Number Type: |
real |
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|
|
| Attribute Name: |
snpp |
| Attribute Label: |
snpp |
| Attribute Definition: |
The calculated primary production of a species in a quadrat in the spring. |
| Measurement Scale: |
| Ratio: |
| Unit: |
|
| Standard Unit: |
gramsPerSquareMeter |
| Precision: |
0.01 |
| Numeric Domain: |
| Number Type: |
real |
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|
| Attribute Name: |
fnpp |
| Attribute Label: |
fnpp |
| Attribute Definition: |
The calculated primary production of a species in a quadrat in the fall. |
| Measurement Scale: |
| Ratio: |
| Unit: |
|
| Standard Unit: |
gramsPerSquareMeter |
| Precision: |
0.01 |
| Numeric Domain: |
| Number Type: |
real |
|
|
|
| Attribute Name: |
anpp |
| Attribute Label: |
anpp |
| Attribute Definition: |
The calculated annual primary production of a species in a quadrat. |
| Measurement Scale: |
| Ratio: |
| Unit: |
|
| Standard Unit: |
gramsPerSquareMeter |
| Precision: |
0.01 |
| Numeric Domain: |
| Number Type: |
real |
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