Survey 200 long term study of multiple sites in central Arizona-Phoenix: decomposition, mycorrhizae, and on-site climate - survey year 2000
Author(s):
- Nancy Grimm, Global Institute of Sustainability, Arizona State University
- Diane Hope, Global Institute of Sustainability, Arizona State University
- Corinna Gries, Global Institute of Sustainability, Arizona State University
- Chris Martin
- Elizabeth Burns, School of Geographical Sciences, Arizona State University
Abstract:
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient.
A pilot survey was conducted in 1999, and the first full ESCA was conducted in 2000. The maiden survey in 2000 featured a suite of measurements, such as quantifying pollen from soil samples, measuring weather at the survey site, breakdown of organic matter, etc., that were not assessed in later surveys. The data set here includes a subset of data from the Survey200/ESCA focusing exclusively on measurements that were conducted during the year 2000 survey only, and were not continued in subsequent surveys. The focus of this data set includes: local climate at the time of surveying in the field, land use up to 100 meters beyond the survey plot boundary, breakdown of organic matter (as dowels and litter bags), and soil mycorrhiza.
Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Keywords:
Temporal Coverage:
1999-05-12 to 2000-05-17Geographic Coverage:
Geographic Description: CAP LTER study areaBounding Coordinates:
Longitude:-112.783 to -111.579
Latitude:33.8267 to 33.2186
Contact:
Information Manager,Global Institute of Sustainability,Arizona State University,POB 875402,Tempe
caplter.data@asu.edu
Methods used in producing this dataset: Show
Data Files (9) :
Tabular: 27_climate_1.csv
Description: Climate data collected at each site during visit
Column | Description | Type | Units |
---|---|---|---|
visit_id | visit id, encrypted date of visit
MMDDYYYY |
string | |
site_id | Numbers and letters used to identify specific sites used in
this study. |
string | |
location | The direction that the measurements were taken within a
plot |
string |
Enumeration:
|
time_of_day | Time at which each measurement was
taken |
datetime | Format: HH:MM:SS |
dry_temp | Temperature measured using the dry
thermometer |
float | celsius |
wet_temp | Temperature using the wet thermometer |
float | celsius |
windspeed | Measured speed of the wind |
float | milesPerHour |
description | Description of the ground cover above which measurements
were made |
string |
Tabular: 27_dowels_1.csv
Description: Dowel weights before and after being buried in the ground - a measure
for wood decomposition rate
Column | Description | Type | Units |
---|---|---|---|
visit_id | visit id, encrypted date of visit
MMDDYYYY |
string | |
site_id | Unique combination of letters and numbers used to identify
specific sites used in this study. |
string | |
sample_id | Identification of the samples taken |
integer | |
dowel_preweight | Weight of the dowel before it is put into the
ground |
float | gram |
dowel_postweight | Weight of the dowel when it is pulled up after one
year |
float | gram |
removal_date | Date the sample was removed |
datetime | Format: MM/DD/YYYY |
Tabular: 278_landuse_100m_6dbcc5fb5e3f52bb67210a417c67d586.csv
Description: landuse up to 100 meters around the plot
Column | Description | Type | Units |
---|---|---|---|
visit_id | visit id, encrypted date of visit MMDDYYYY |
string | |
site_id | Unique letters and numbers used to identify the sites used in this
study |
string | |
direction | Direction the observer was facing |
string |
Enumeration:
|
landuse_label | Land use type description |
string |
Tabular: 27_litter_bags_1.csv
Description: Litter Bags
Column | Description | Type | Units |
---|---|---|---|
bag_id | Unique numbers assigned to each bag of litter
collected |
integer | |
visit_id | visit id, encrypted date of visit
MMDDYYYY |
string | |
site_id | Unique letters and numbers used to identify the sites used
in this study |
string | |
sample_id | Sample ID numbers |
integer | |
pre_weight | air dry leaves before it goes to the site, 10g for
each |
float | gram |
location_description | location the bag was placed |
string | |
removal_date | Date the bag was removed |
datetime | Format: YYYY-MM-DD |
post_dry_weight | 60 degree oven dry weight after
removal |
float | gram |
post_ash_weight | ash weight after removal |
float | gram |
Tabular: 27_mycorrhiza_numspores_1.csv
Description: Mycorrhiza Spore Count 1999
Column | Description | Type | Units |
---|---|---|---|
site_id | Unique numbers and letters assigned to each site used in
this study |
string | |
visit_id | visit id, encrypted date of visit
MMDDYYYY |
string | |
parallel_id | Parallel Identification; A, B, C |
string | |
vegetation | Vegetation around the specific sample
site |
string | |
num_spores | Spore Count |
float | dimensionless |
Tabular: 27_mycorrhiza_sample_sites_1.csv
Description: description of the exact sample locations for the mycorrhiza
study
Column | Description | Type | Units |
---|---|---|---|
visit_id | visit id, encrypted date of visit
MMDDYYYY |
string | |
site_id | Unique numbers and letters used to identify the sites used
in this study |
string | |
sample_id | Sample Identification Numbers |
integer | |
location_description | Description of the exact area where the sample was
taken |
string | |
under_plant | Numeric codes used to identify plant species the sample was
taken under |
integer |
Tabular: 27_mycorrhiza_species_1.csv
Description: Species of mycorrhiza and individual count for each
sample
Column | Description | Type | Units |
---|---|---|---|
myco_id | Mycorrhiza ID number |
integer | |
visit_id | visit id, encrypted date of visit
MMDDYYYY |
string | |
site_id | Unique numbers and letters that identify sites used in this
study |
string | |
parallel_id | Parallel Identification |
string | |
trap_soil | Describes whether the spores were obtained from the soil
sample or a trap |
string | |
taxon_id | Unique Taxon Identification Number |
integer |
Tabular: 27_weather_station_1.csv
Description: summary weather station data for each site and sampling
event
Column | Description | Type | Units |
---|---|---|---|
visit_id | visit id, encrypted date of visit
MMDDYYYY |
string | |
site_id | Unique numbers and letters used to identify the sites used
in this study |
string | |
survey_time | Time the surveys started |
datetime | Format: HH:MM:SS AM/PM |
th_index | Heat index |
float | celsius |
temperature | Outside temperature |
float | celsius |
wind_chill | Wind Chill |
float | celsius |
hi_temp | Temperature high |
float | celsius |
low_temp | Low Temperature |
float | celsius |
humidity | Percent Humidity |
float | dimensionless |
dew_point | Dew Point |
float | dimensionless |
wind_speed | Average Wind Speed |
float | milesPerHour |
hi_wind | High wind |
float | milesPerHour |
dir_wind | WInd direction |
string |
Enumeration:
|
barometric | Barometric Pressure |
float | millibar |
date_data | Date the data was taken |
datetime | Format: MM/DD/YYYY |
Tabular: 27_weather_upload_1.csv
Description: raw data uploaded from the weather station logger
Column | Description | Type | Units |
---|---|---|---|
survey_date | Datas the measurements took place |
datetime | Format: MM/DD/YYYY |
survey_time | Time the measurements were started |
datetime | Format: HH:MM:SS AM/PM |
th_index | Heat Index |
float | celsius |
temperature | Average outside temperature |
float | celsius |
wind_chill | Wind Chill |
float | celsius |
hi_temp | High Temperature |
float | celsius |
low_temp | Low Temperature |
float | celsius |
humidity | Percent Humidity |
float | dimensionless |
dew_point | Dew Point |
float | dimensionless |
wind_speed | Average Wind Speed |
float | celsius |
hi_wind | Highest windspeed |
float | milesPerHour |
dir_wind | Wind Direction |
string |
Enumeration:
|
barometric | Barometric Pressure |
float | celsius |