ecogeographic land characterization for cwr diversity and gap analysis workshop - geoqual tool

GEOQUAL

Mauricio Parra QuijanoEcogeographic land characterization for CWR diversity and gap analysis Training workshop 26–27 February 2014, Room UG08, Learning Centre, University of Birmingham

Tool

Interface

CAPFITOGEN tools

• GEOQUAL

• ELCmapas

• ECOGEO

• Representa

• Colnucleo

• DIVmapas

• FIGS_R

Why should you evaluate the geo-

referencing quality of your p data?

Real location

x km

1030

75

100

Coordinates

10 km

5 oC

6 oC

7 oC8 oC 9 oC

1 km

Inaccurate geo-referencing effects

Geo-referencing is not only coordinates

Nivel Valor

ORIGCTY CRI

ADM1 Punta Arenas

ADM2 Buenos Aires

ADM3 NA

ADM4 NA

Nivel Valor

ORIGCTY CRI

ADM1 Punta Arenas

ADM2 Pérez Zeledón

ADM3 NA

ADM4 NA

Collecting site description

GEOQUAL

• Is a tool to assign a quality assessment value to each accession which has coordinates (mandatory) and locality description.

•User have to introduce data to be evaluated in the modified FAO-Bioversity2012 format.

•GEOQUAL assesses three parameters, COORQUAL, LOCALQUAL and SUITQUAL along with other subparameters.

•Parameters are summarized to obtain the parameter TOTALQUAL (0-60) orTOTALQUAL100 (0-100).

0 100

TOTALQUAL100: Unified quality value of the georeferenced collecting sites80

COORQUAL

Intrinsic quality value of the coordinates. Values range from 0 to 20. Subparameters:

• ERRORES: Coordinates values out of the expected range

• PRECIS: Coordinates precision on degrees, minutes, seconds (only for sexagesimalformat)

• GEORBLE: The most detailed collecting site description, the better the coordinates are

• INTERTEMP: Precision on coordinates according to the collecting year

• GEOREFMETH: Precision according to the method used to obtain the coordinates

SUITQUAL

This parameter assigns quality values according to the suitability to grow plants in the collecting sites. Values range from 0 to 20.

• It considers differences between crop and wild plants (SAMPSTAT)

• It uses information about land use from the Global Land Cover map(1 km)

SUITQUAL

> 30 km

10-20 km

5-10 km

0-1 km

On land

0 20

Distance to land

SUITQUAL

Low resolution

High resolution

zoom!

LOCALQUALThis parameter compares collecting site description from the passport data and the site extracted from coordinates.

• Administrative information comes from GADM (www.gadm.org)

• Comparison is achieved between chain of characters (string), obtaining a distance (Levenshtein). Then a threshold is fixed for a number of insertions, deletions or changes. Following this threshold, we assume that one string is equivalent to another. “agrep” function from R

• According to the number of matches within each administrative level, a value is assigned from 0 to 20.

Level Coordinates1 Coordinates 2

ORIGCTY ISO

ADM1 NAME1 VARNAME1

ADM2 NAME2 VARNAME2

ADM3 NAME3 VARNAME3

ADM4 NAME4 VARNAME4

LOCALQUAL

TOTALQUAL and TOTALQUAL100

TOTALQUAL = COORQUAL + SUITQUAL + LOCALQUAL

VALUES RANGE FROM 0 TO 60

TOTALQUAL100 = (TOTALQUAL*60) /100

0 98

GEOQUAL on Information Systems913 selected

accessions

GEOQUAL en SIERFE722 selected

accessions

Thanks

mauricio.parra@fao.org

http://www.planttreaty.org/es/capfitogen