Ecogeographic land characterization for CWR diversity and gap analysis Workshop - GEOQUAL tool

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Information about Ecogeographic land characterization for CWR diversity and gap analysis...
Education

Published on March 5, 2014

Author: hmparraq

Source: slideshare.net

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

Interface

CAPFITOGEN tools • GEOQUAL • ELCmapas • ECOGEO • Representa • Colnucleo • DIVmapas • FIGS_R

Why should you evaluate the georeferencing quality of your p data? Coordinates 30 10 100 x km 75 Real location

Inaccurate geo-referencing effects 10 km 1 km 5 oC 6 oC 7 oC 8 oC 9 oC

Geo-referencing is not only coordinates Collecting site description Nivel Valor Nivel Valor ORIGCTY CRI ORIGCTY CRI ADM1 Punta Arenas ADM1 Punta Arenas ADM2 Buenos Aires ADM2 Pérez Zeledón ADM3 NA ADM3 NA ADM4 NA ADM4 NA

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-Bioversity 2012 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). TOTALQUAL100: Unified quality value of the georeferenced collecting sites 80 0 100

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 sexagesimal format) • 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 Distance to land 0 > 30 km 10-20 km 5-10 km 0-1 km On land 20

SUITQUAL Low resolution om ! zo High resolution

LOCALQUAL This 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 Systems 913 selected accessions

GEOQUAL en SIERFE 722 selected accessions

Thanks mauricio.parra@fao.org http://www.planttreaty.org/es/capfitogen

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