Data Package Metadata View Summary

Physiological responses of biological soil crusts in the Chihuahuan desert

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210549002.2
Title:	Physiological responses of biological soil crusts in the Chihuahuan desert
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This dataset contains photosynthetic light response and carbon fixation data from biological soil crusts collected at four locations in the Chihuahuan Desert. This study aims to 1) assess the carbon fixation capacity of biocrust types under varying incubation times; 2) assess biocrust nitrogen fixation capacity; 3) understand microbial community composition as well as biomass differences within these biocrust types; and 4) identify how geographic location and soil properties can explain differences seen in carbon fixation and microbial diversity. In order to characterize the physiology of biocrust types at a range of Chihuahuan Desert sites, intact, replicate samples of five soil crust types were collected from each of 4 sites in southern New Mexico, USA: the Jornada Experimental Range (near T-West), the A-Mountain BLM site, the Volcanic BLM site, and White Sands Missile Range. Data and sample collection occurred between May and July of 2020, and the soil crust types of interest were light cyanobacterial, dark cyanobacterial, Peltula lichen, Clavascidium lichen, and moss crusts (n=5 samples for each site & type). After collection, crust subsamples were sequenced, targeting the 16S rRNA gene region for bacteria (see EDI dataset knb-lter-jrn.210549001 and linked data at NCBI), and then subjected to an incubation and photosynthetic response measurements. The intact crusts were incubated under low light, and C fixation was then observed under 12-point light regime in a LI-6400XT photosynthesis analyzer leaf chamber after incubation periods of 30min, 2hr, 6hr, 12hr, and 24hr (5 reps for each condition). The resulting light response curves were used to calculate photosynthetic information in R for the purpose of comparing biocrust type, site, and time response differences and upscale carbon flux values to landscape scale. This data set includes the light response curve values and photosynthetic data calculated from these curves. This data set also includes raw LICOR output files compiled into four Excel workbooks that data was extracted from. This study is complete.
Short Name:	soil crust physiology (hoellrich)
Publication Date:	2021-10-20
Language:	English

Time Period

Begin:

2020-05-01

End:

2020-07-31

People and Organizations
Contact:	Jornada Basin LTER Information Manager (Jornada Basin LTER) [ email ]
Creator:	Hoellrich, Mikaela (New Mexico State University)
Creator:	Pietrasiak, Nicole (New Mexico State University)
Associate:	Dominguez, Andrew (New Mexico State University, associate)
Associate:	De Ley, Paul (New Mexico State University, associate)

Data Entities
Data Table Name:	Biological soil crust C fixation data
Description:	Light response curves and carbon fixation data collected during incubations of biological soil crusts collected at 4 sites in the Chihuahuan desert.
Data Table Name:	Raw licor output variables
Description:	Description and units of raw LiCor data outputs
Other Name:	Raw licor data AMT
Description:	Raw LiCor 6400 data from AMT
Other Name:	Raw licor data JER
Description:	Raw LiCor 6400 data from JER
Other Name:	Raw licor data VOL
Description:	Raw LiCor 6400 data from VOL
Other Name:	Raw licor data WHS
Description:	Raw LiCor 6400 data from WHS

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210549002/2/0472480128d83d9e64de6b4b081596c0
Name:	Biological soil crust C fixation data
Description:	Light response curves and carbon fixation data collected during incubations of biological soil crusts collected at 4 sites in the Chihuahuan desert.
Number of Records:	499
Number of Columns:	24

Table Structure

Object Name:

JRN549002_Cfix_and_lightresponse.csv

Size:

121651 byte

Authentication:

0c6a0864bee0102c8f81fe3f339f9e53 Calculated By MD5

Text Format:

Number of Header Lines:

Number of Foot Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Sampling site

Biocrust type

Time

Rep

Thickness

Water

PercentWater

Cfix

Respiration

Net

QuantumYield

SaturatingPPFD

PAR0

PAR25

PAR50

PAR100

PAR150

PAR300

PAR500

PAR750

PAR1000

PAR1250

PAR1600

PAR2000

Column Name:

Site

Type

Time

Rep

Thickness

Water

PercentWater

Cfix

Respiration

Net

QuantumYield

SaturatingPPFD

PAR0

PAR25

PAR50

PAR100

PAR150

PAR300

PAR500

PAR750

PAR1000

PAR1250

PAR1600

PAR2000

Definition:

Sampling site code

Crust type code

Time into incubation in hours

Replicate number

Thickness of the biocrust samples

Water content of sample

Percent water content in sample

Difference between highest and lowest curve points

Minimal value of carbon fixation

Highest point from raw data

Initial slope of line indicating the efficiency of light absorption - Umol CO2 fixed/umol photons absorbed

Photosynthetic photon flux density at which carbon fixation no longer increases with more light intensity

Raw data net CO2 fixation at 0 umol m-2 sec-1 light

Raw data net CO2 fixation at 25 umol m-2 sec-1 light

Raw data net CO2 fixation at 50 umol m-2 sec-1 light

Raw data net CO2 fixation at 100 umol m-2 sec-1 light

Raw data net CO2 fixation at 150 umol m-2 sec-1 light

Raw data net CO2 fixation at 300 umol m-2 sec-1 light

Raw data net CO2 fixation at 500 umol m-2 sec-1 light

Raw data net CO2 fixation at 750 umol m-2 sec-1 light

Raw data net CO2 fixation at 1000 umol m-2 sec-1 light

Raw data net CO2 fixation at 1250 umol m-2 sec-1 light

Raw data net CO2 fixation at 1600 umol m-2 sec-1 light

Raw data net CO2 fixation at 2000 umol m-2 sec-1 light

Storage Type:

string

integer

float

integer

float

Measurement Type:

nominal

interval

ratio

interval

ratio

Measurement Values Domain:

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	AMT
Definition	A Mountain BLM site
Source

Code Definition

Code	JER
Definition	Jornada Experimental Range site (near T-WEST)
Source

Code Definition

Code	VOL
Definition	Volcanic BLM site
Source

Code Definition

Code	WHS
Definition	White Sands Missile Range site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	CVL
Definition	Clavascidium lichen crust
Source

Code Definition

Code	DA
Definition	dark algal crust
Source

Code Definition

Code	LA
Definition	light algal crust
Source

Code Definition

Code	MO
Definition	Moss crust
Source

Code Definition

Code	PTL
Definition	Peltula lichen crust
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	twelve
Definition	Twelve hours into incubation
Source

Code Definition

Code	two
Definition	Two hours into incubation
Source

Code Definition

Code	twenty-four
Definition	24 hours into incubation
Source

Code Definition

Code	six
Definition	Six hours into incubation
Source

Code Definition

Code	half
Definition	Half an hour into incubation
Source

Unit	number
Type	integer

Unit	millimeter
Type	real

Unit	milliliter
Type	real

Unit	percent
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	dimensionless
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	integer

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Unit	micromolePerMeterSquaredPerSecond
Type	real

Missing Value Code:

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210549002/2/2c5ee35295be5e75fb32501488e0d927
Name:	Raw licor output variables
Description:	Description and units of raw LiCor data outputs
Number of Records:	55
Number of Columns:	3

Table Structure

Object Name:

RawLicor_variable_key.csv

Size:

1915 byte

Authentication:

e677f6f21e4588a69a456db3d27983f9 Calculated By MD5

Text Format:

Number of Header Lines:

Number of Foot Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column name

PAR2000

Column Name:

Column_name

Column_description

Unit_codes_or_date_format

Definition:

Column or variable name in LiCor raw output file

Description of column or variable

Measurement units, categorical code, or dateTime format of column

Storage Type:

string

Measurement Type:

nominal

Measurement Values Domain:

Definition

any text

Definition

any text

Definition

any text

Missing Value Code:

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Non-Categorized Data Resource

Name:

Raw licor data AMT

Entity Type:

otherEntity

Description:

Raw LiCor 6400 data from AMT

Physical Structure Description:

Object Name:

AMTRawLicorFix.xlsx

Size:

2038273 byte

Authentication:

4a5f06b5911024ddc6506adfbe0b9b34 Calculated By MD5

Externally Defined Format:

Format Name:

MS-Excel

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210549002/2/1b4be31e227e13bfbc673dc4758b3e83

Non-Categorized Data Resource

Name:

Raw licor data JER

Entity Type:

otherEntity

Description:

Raw LiCor 6400 data from JER

Physical Structure Description:

Object Name:

JERRawLicorFix.xlsx

Size:

2005107 byte

Authentication:

977bb0088c793898e1dfbebe7ca84264 Calculated By MD5

Externally Defined Format:

Format Name:

MS-Excel

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210549002/2/b02e45682253ed23f5c8e3f6a7ad66ae

Non-Categorized Data Resource

Name:

Raw licor data VOL

Entity Type:

otherEntity

Description:

Raw LiCor 6400 data from VOL

Physical Structure Description:

Object Name:

VOLRawLicorFix.xlsx

Size:

2011313 byte

Authentication:

f6f0f16662f679cfacbfec64a0c1db83 Calculated By MD5

Externally Defined Format:

Format Name:

MS-Excel

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210549002/2/3d8ed63ddc0a32d0df069ad72915c80a

Non-Categorized Data Resource

Name:

Raw licor data WHS

Entity Type:

otherEntity

Description:

Raw LiCor 6400 data from WHS

Physical Structure Description:

Object Name:

WHSRawLicorFix.xlsx

Size:

1997037 byte

Authentication:

be57d2dc982517571db7964193b1d0d1 Calculated By MD5

Externally Defined Format:

Format Name:

MS-Excel

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210549002/2/eccc5511d4d08b77bd954860f2dec78c

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
LTER Core Research Areas	Populations
LTER Controlled Vocabulary v1	algae, bacterial abundance, carbon assimilation, community dynamics, deserts, genomics, incubation, photosynthesis, soil, soil samples, species abundance, species diversity, transects
none	16S sequencing, biological, biotic crusts, carbon fixation, cryptobiotic crusts, cyanobacteria, incubation, light response, photosynthesis, relative abundance, soil crusts
Jornada Basin LTER dataset keywords	NCBI linked, non-core
Jornada Basin project names	study 549
Jornada Basin place names	T-WEST

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package

Description:

Experimental and sampling design

Biological soil crusts, and related environmental data and samples, were collected at four sites in the Chihuahuan Desert with varying vegetation and soils. At each of the four sites in the study, 2 intersecting 30m transects were laid out in an X shape crossing at the 15m mark. From these transects, intact, replicate samples of 5 types of biological soil crusts were collected. Collections occurred between May and July of 2020. Soil metagenomic analyses were performed using subsamples of each crust, and the data from these analyses are stored at the NCBI Sequence Read Archive under NCBI BioProject #PRJNA748083. Further information about these analyses can also be found in the related EDI dataset knb-lter-jrn.210549001. After being returned to the lab, the intact crust samples were subsequently incubated and observed using the following methods.

Incubations and photosynthetic measurements

Intact crust samples were wet to field capacity, cut into 1.6x1.7cm square and incubated under light incubator (~90 mmol/m2/s) for an allotted period of time before photosynthetic measurements were collected at 30min, 2hr, 6hr, 12hr, or 24hr., Samples were rewetted every 6 hours and/or 30min before ending the incubation. During each set of photosynthetic measurements, each sample was weighed and placed into LI-6400XT photosynthesis analyzer leaf chamber and subjected to a 12 point light regime (PAR: 0, 25, 50, 100, 150, 300, 500, 750, 1000, 1250, 1600, 2000 umol/s). After the incubations ended, samples were dried at 105˚C for 48hr and reweighed for dry weight. Subsequent light response curve points were pulled from raw licro data file. Photosynthetic data was extracted from each curve: Maximum carbon fixation, Net fixation rate, Respiration rate, Quantum Yield, and Saturating light intensity. Samples were processed July-August 2020 in the apartment of Mikaela Hoellrich, due to COVID-19 lab restrictions.

Notes

NA values in the Water and Percent Water columns indicates issue in data collection leading to removal of value. NA in LightCompensation indicates the response curve was an atypical shape and did not meet the criterion for the value. A 2000 in SaturatingPPFD indicates that there was no saturation. Sample data missing for Sample (JER DA two rep5), it was probably accidentally deleted at some point after data collection.

People and Organizations

Publishers:

Organization:

Environmental Data Initiative

Email Address:

info@environmentaldatainitiative.org

Web Address:

https://environmentaldatainitiative.org

Id:

https://ror.org/0330j0z60

Creators:

Individual:

Mikaela Hoellrich

Organization:

New Mexico State University

Address:

Las Cruces, NM 88003-8003 U.S.A.

Individual:

Nicole Pietrasiak

Organization:

New Mexico State University

Address:

Las Cruces, NM 88003-8003 U.S.A.

Id:

https://orcid.org/0000-0003-4636-8006

Contacts:

Organization:

Jornada Basin LTER

Position:

Jornada Basin LTER Information Manager

Address:

P.O. Box 30003, MSC 3JER New Mexico State University,

Las Cruces, NM 88003-8003 USA

Phone:

575-646-1739

Email Address:

jornada.data@nmsu.edu

Web Address:

https://lter.jornada.nmsu.edu/information-management/

Associated Parties:

Individual:	Andrew Dominguez
Organization:	New Mexico State University
Role:	associate

Individual:	Paul De Ley
Organization:	New Mexico State University
Role:	associate

Metadata Providers:

Organization:

Jornada Basin LTER

Address:

P.O. Box 30003; MSC 3JER New Mexico State University,

Las Cruces, NM 88003-8003 USA

Web Address:

https://lter.jornada.nmsu.edu

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

2020-05-01

End:

2020-07-31

Geographic Region:

Description:

T-West crust sampling (549): Study 549 T-West crust samples: Near T- West, tarbush dominated site

Bounding Coordinates:

Northern:	32.511184	Southern:	32.511065
Western:	-106.741358	Eastern:	-106.741125

Geographic Region:

Description:

A Mountain crust sampling (549): Study 549 A Mountain crust samples: Across the road from A Mountain, creosote dominated

Bounding Coordinates:

Northern:	32.300009	Southern:	32.300001
Western:	-106.698837	Eastern:	-106.698654

Geographic Region:

Description:

White Sands crust sampling (549): Study 549 White Sands Missile Range crust samples: Gypsum soil, heavy lichen cover

Bounding Coordinates:

Northern:	32.729660	Southern:	32.729660
Western:	-106.215882	Eastern:	-106.215799

Geographic Region:

Description:

Volcanic crust sampling (549): Study 549 Volcanic Site crust samples: On top of lava outcrop

Bounding Coordinates:

Northern:	32.105730	Southern:	32.979502
Western:	-107.024705	Eastern:	-107.024586

Project

Parent Project Information:

Title:

Jornada Basin LTER

Personnel:

Individual:

Dr. Niall Hanan

Address:

P.O. Box 30003, MSC 3JER,

New Mexico State University,

Las Cruces, NM 88003-8003 United States

Phone:

575-646-3335 (voice)

Email Address:

nhanan@nmsu.edu

Role:

Principal Investigator

Abstract:

The Jornada Basin Long-Term Ecological Research (LTER) program is part of a national network of long-term ecological research sites funded by the US National Science Foundation (NSF). The Jornada LTER program has been continuously funded since 1982 to develop general principles governing changes between grassland and shrubland ecosystems based on long-term data collected in the Chihuahuan Desert. We translate our findings to dryland ecosystems around the world, and forecast the dynamics of future ecosystem states in response to changing climate and land use.

Funding:

JRN is funded by the National Science Foundation under award DEB 2025166.

Maintenance

Maintenance:

Description:	completed
Frequency:	asNeeded

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'dimensionless'
        |     |     |     |  \___attribute 'name' = 'dimensionless'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'a designation asserting the absence of an associated unit'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = 'µmol/m²/s'
        |     |     |     |  \___attribute 'id' = 'micromolePerMeterSquaredPerSecond'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.000001'
        |     |     |     |  \___attribute 'name' = 'micromolePerMeterSquaredPerSecond'
        |     |     |     |  \___attribute 'parentSI' = 'molePerMeterSquaredPerSecond'
        |     |     |     |  \___attribute 'unitType' = 'amountOfSubstanceAreaRate'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'micromoles per square meter per second'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = 'ml'
        |     |     |     |  \___attribute 'id' = 'milliliter'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.000001'
        |     |     |     |  \___attribute 'name' = 'milliliter'
        |     |     |     |  \___attribute 'parentSI' = 'cubicMeter'
        |     |     |     |  \___attribute 'unitType' = 'volume'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text '1/1000 of a liter'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = 'mm'
        |     |     |     |  \___attribute 'id' = 'millimeter'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'millimeter'
        |     |     |     |  \___attribute 'parentSI' = 'meter'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text '.001 meters'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'number'
        |     |     |     |  \___attribute 'name' = 'number'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'a quantity or amount'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = '%'
        |     |     |     |  \___attribute 'id' = 'percent'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'percent'
        |     |     |     |  \___attribute 'parentSI' = 'dimensionless'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'percent, one part per hundred parts. a decimal ratio multipled by 100'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

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Data Package Metadata View Summary

Physiological responses of biological soil crusts in the Chihuahuan desert

Data Entities

Data Table

Data Table

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

Data Package Usage Rights

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Experimental and sampling design

Incubations and photosynthetic measurements

Notes

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Physiological responses of biological soil crusts in the Chihuahuan desert

+/- Data Entities

Data Table

Data Table

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Experimental and sampling design

Incubations and photosynthetic measurements

Notes

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Maintenance

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Metadata