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22/04/2014 Cartographic representations for Intercultural dialogue THE REPRESENTATION OF ECUMENE Eratostene (276-195 b.C.) 1
22/04/2014 NETOWORKED SPACE Britannia Gallia Germania Illyricum Graecia Sarmatia Asia minor Scythia Hispania Mauretania Italia Africa Aegyptus Syria Persida India 335-366 A.D., Tabula Peutingeriana (copY of XII century) Augusta Taurinorum Roma Torino Italia 335-366 d.C., Tabula Peutingeriana (copia del XII secolo) 2
22/04/2014 CREATIONIST SPACE 1235, Ebstof, Mappamondo HODOLOGICAL SPACE 1550 ca., Battista Agnese, Carta nautica 3
22/04/2014 AREAL SPACE 1460, Mappamondo di Fra’ Mauro BIRTH OF TOPOGRAPHIC SPACE 1680, Henri Testelin, Colbert présente à Louis XIV les membres de l’Académie royale des sciences crée en 1667 4
22/04/2014 1720, MAP OF FRANCE Salle Méridienne (Cassini Hall), Observatoire de Paris, XIVe arrondissement 5
22/04/2014 TOPOGRAPHY AND POWER 1817, Nicolas-André Monsiau, Louis XVI donnant ses instructions au capitaine de vaisseau Jean-François de La Pérouse pour son voyage d’exploration autour du monde, le 29 juin 1785 AFRICA: TRAVELLING AROUND A TABLE 1909, Arcangelo Ghisleri, Atlante d'Africa 6
22/04/2014 TOPOGRAPHIC TECHNIQUES IN AFRICA Stazione di triangolazione su un baobab dove veniva poi alzato il segnale piramidale (Foto da: A. Mori, La cartografia ufficiale in Italia e l’Istituto Geografico Militare) BERLIN CONFERENCE 1884-1885 – THE SCRAMBLE FOR AFRICA 7
22/04/2014 ITALIAN TOPOGRAPHY IGM, Tavoletta al 25.000 of Treviso plane TOPOGRAPHY AND PLANNING 2007, Centro Studi sul Territorio “Lelio Pagani” – Università degli studi di Bergamo, Carta di piano: PLIS del Basso Brembo 8
22/04/2014 MAP DIFFERENT INTERPRETATIONS Objective • neo-positivist approach Deconstruction Semiotics • visual issues (J. BERTIN) • critical approach • representation of the • communication system relationship man- •Map = hypertext environment J.B. HARLEY ICA COMMISION R. ALMAGIA’ Theoretical cartography C. JACOB (Wolodtschenko et H. Schlichtmann ) F. FARINELLI Cartographic Semiosis (Casti, 2000) CARTOGRAPHIC SEMIOSIS Semiotic field Connection between map and territory Geography Semiotics Cartography Operational role of the map 10
22/04/2014 Cartographic semiosis: a meta- semiosis 1° level semiosis Territorialisation process Denomination MAP Reification 2° level semiosis Structuration INTERPRETER Map = Semiotic Field Semantics Syntax Pragmatics NAME PROJECTION SEMIOTIC ELEMENT ICON Shape Number DESIGNATOR Position Color Strenghtening of position FIGURATISATION Attribution of social values SELF-REFERENCE 11
22/04/2014 Self-reference Map given La carta by Gen. Baratieri topographique de latozone the brigades before de la bataille de the battle of Adua Adua Map = symbolic operator topography Visual and material aspects of territory Empty and abstract space From topos to chora (recovering the individual) « chorography » Meaning of places and landscape Importance of cultural values Relational dimension 12
22/04/2014 From Topography ... Cartographer: institutionnalise professional INTERPRETER Receiver: no interaction Euclidian space (continue, contigus, uniform) METRICS Cartesian logic (conventional space material aspects) Geodesy/trigonometry Observation: material qualities DATA CARTOGRAPHIC Point of observation: zenithal (no 3 dimension) TRANSPOSITION Scale: uniform Icons: abstraction (shape, dimension, orientation, intensity) … to chorography Cartographer: plurality of actors professional/institutional or INTERPRETER common people; Receiver: interaction and intervention Topologic space (extension/contraction, networking) METRICS Landscape logic (symbolic, material, dynamic) Teledetection/GPS/Field research DATA Social and cultural values Point of observation: multiple (zenithal and perspective) = 3D; CARTOGRAPHIC Anamorphosis: deformation of the surphace following the TRANSPOSITION social weight Scale: interaction of plural scales; Icons: analogic, figurative, 2D/3D) ; Introduction of photos, descriptions, videos …) 13
22/04/2014 Cartografic challenge How to develop a map able to create a dialogue between social actors coming from different cultural contexts? ? How can we translate the terms «participation» and «collaboration» in cartographic instruments for territorial governance ? How can we integrate in a map different visions of the world Cartographic semiosis 1. the cartographic interpreter: plurality of actors 2. the typology of data: not only statistical, other sources 3. the graphic transfert: multiple ways of representation PARTICIPATORY METHODOLOGY: the SIGAP Strategy created by the Diathesis Lab 1° PHASE ANALISI DATI STATISTICI E INDAGINE DI TERRENO: 2° PHASE LA CARTOGRAFIA DI CONOSCENZA INTERPRETAZIONE DEI DATI: LA CARTOGRAFIA PER LA PIANIFICAZIONE Osservazione e inchieste partecipative Modellizzazione dei dati (criteri, indici, categorie) Identificazione COMMUNENOM MÈRENOM Statut PhénomènesYde déguerpissement Kandi Kandi Donwari vill.de nouv. Installation11.11861 2.85415 X N habitants N concessions 4300 GROUPES Année fondation Migrations Activité Elements TrElements mod 358 Bariba,gando,haoussa, djerma, Agriculture Immigrés agricoles (coton, (saisonniers sorgho, maïs,habitat Lieux sacrés:Konrantéya ou définitifs) Coton, etharicot, igname,…); commerçants (=rivière; moderne, élevage plusprojets duimportant Niger (bovins,ducaprins, et etassociations parfois lieu sacré Burkina du de type ovins, village), moderne: FasoSawaï problematiche volaille), PADEAR,chasse (pierre), collective Kloulassidé PAMR, APE, à GJ, la battue (colline), GFvers les(arbre, GC,Gbigangni hameaux de Dinnin exactement), Womassou (Deux arbres, un karité et un néré), Yabobom (pierre) un caïlcédrat Kandi Donwari Boï ham.perm. 11.15295 2.84294 72 6 Bariba Agriculture (coton, sorgho, maïs), élevage (bovins, caprins, ovins, volaille) Cartografia a plurime scale Kandi Donwari Goukonnouham.perm. Kandi Donwari Goutinma ham.perm. 11.15153 2.83534 11.16484 2.83222 192 36 16 Bariba, Gando 3 Bariba Agriculture (coton, maïs, sorgho), petit élevage (volaille) Agriculture (coton, sorgho, maïs,arachide) Kandi Donwari/ Sinawongourou(les Gannou ham.perm. deux villages reclament 11.15600 ces terres) 2.80927 180 15 Bariba, Gando Agriculture (coton, sorgho, maïs, arachide), élevage Kandi Donwari Gouwonké ham.perm. 11.15912 2.79844 120 10 Bariba, Gando Agriculture (coton, sorgho, maïs, arachide), élevage Kandi Donwari Bontéré ham.perm. 11.15247 2.79361 108 9 Bariba, Gando Agriculture (sorgho, coton, maïs, arachide), élevage (bovin, volaille) Kandi Donwari Siansiangourou ham.perm. 11,22193 2.78593 120 10 Bariba,Gando Agriculture (coton, sorgho, maïs,igname), élevage (bovin, volaille) Kandi Donwari Gountia ham.perm. 11,26098 2.75095 96 8 Bariba, Gando Agriculture (coton, maïs, sorgho), élevage (bovin et volaille) Kandi Donwari Batabongouham.perm. 11,27597 2.79904 288 24 Bariba, Gando Agriculture (maïs, sorgho, coton, igname, riz, manioc, piment) Kandi Donwari/ Sanrou Sémkassi (les deux (ouham.perm. Djanwanka; villages reclament son deuxième ces terres) 11,24616 nom) 2.82740 144 12 Bariba, Gando Agriculture (maïs, sorgho, coton, manioc, haricot, arachide) Kandi Donwari Goubouko ham.perm. 11,19516 2.82225 240 20 Bariba,Gando Agriculture (sorgho, maïs, coton), petit élevage Kandi Donwari Tiankorogourou ham.perm. 11,16921 2.84243 120 10 Bariba Agriculture (coton, sorgho, maïs), élevage (bovin, volaille) Kandi Donwari Yayarou/délégué ham.perm. gbarou 11.15995 2.85054 60 5 Bariba, Gourmantché, Gando Agriculture (coton, sorgho, maïs,arachide), élevage (bovin, volaille) Kandi Donwari/ Sinawongourou Gbéniki ham.perm. 11.11147 2.81162 84 7 Bariba, Gando Agriculture (coton, maïs, sorgho) Kandi Donwari Matchou soulé campgarou peulh 11,20309 2,80411 348 29 Peul 1980 élevage, agriculture (coton sorgho) Kandi Donwari El-hadji Gabso campmarégarou peulh 11,21966 2,81590 276 23 Peulh, élevage, agriculture (sorghho, habitatmaïs, mod coton) Kandi Donwari Gousouanouham.perm. 11.01969 2.81210 120 10 Bariba Agriculture (coton, sorgho, maïs), petit élevage(bovin, volaille) Kandi Donwari Kouhougouham.perm. 11.09274 2.82402 180 15 Bariba Agriculture (coton, maïs, sorgho), élevage (bovin et volaille) Kandi Donwari Gbébakayèrèham.perm. 11.07984 2.85804 180 15 Bariba, Gando Agriculture (coton, maïs, sorgho), élevage (bovin et volaille) Kandi Donwari Goutinma camp.peul 11.15818 2.83534 96 8 Peul Elevage (bovin, ovin, volaille), agriculture (sorgho,coton) Kandi Donwari Yompiri camp.peul 11.13304 2.83436 180 15 Peul, Gando Elevage (bovin, ovin, volaille), agriculture (sorgho,coton) Kandi Donwari Wadagou camp.peul 11.13770 2.82740 84 7 Peul, Gando Elevage (bovin, ovin, volaille), agriculture (sorgho,coton, mil) Kandi Donwari Goudokou/Momgogourou camp.peul 11.13667 2.84762 60 5 Peul Elevage, agri (sorgho, mil, coton) Kandi Donwari Kouhougoucamp.peul 11.09053 2.83399 120 10 Peul Elevage, agri (sorgho, mil, coton) Kandi Donwari Siansiangourou camp.peul 11.22358 2.77173 96 8 Peul (Borédjo du Niger) Elevage, agriculture (mil, sorgho) Kandi Donwari Tiankorogourou camp.peul 11.17492 2.84788 96 8 Peul Elevage, agri (sorgho, mil, coton) Kandi Monko Tissarou (anciennement Vill.par agrandissement apppelé Djessou) 11.12741 2.87483 180 50 Bariba, Gando, Djerma, Haoussa Immigrés agricoles Agri (coton, (saisonniers Lieu sorgho, sacré: oumaïs, définitifs) Yassakarou Coton, arachide, habitat et (pierre), commerçants riz moderne, haricot, cheftomate, traditionnel: projets du Niger piment), et etassociations parfois Bouko élevage, Yabi du Burkina depoterie Ngoï type moderne: Faso PAMR, APE, GJ, GC, GF Kandi Tissarou Gannoun ham.perm. 11.10753 2.87544 144 12 Gando Agri (coton, sorgho, maïs, arachide, riz ), élevage (bovin, ovin et volaille surtout) 3° PHASE Kandi Tissarou Toégbarou ham.perm. 4° PHASE Kandi Tissarou Wuro Hamancamp.peul Kandi Tissarou Wuro Gaanicamp.peul Kandi Tissarou Kécérou camp.peul 11.08776 2.88679 11.11847 2.87866 11.10974 2.87731 11.11149 2.88174 144 384 156 144 12 Bariba 32 Peul 13 Peul 12 Peul 1840 Agri (coton, maïs, sorgho, mil), élevage Elevage, agri (sorgho, mil, coton) Elevage, agri (sorgho, mil, coton) Elevage, agri (coton, sorgho, mil, maïs) ELABORAZIONE DI STRUMENTI DI GOVERNANCE: Kandi Tissarou Gurè Baoudècamp.peul 11.10489 2.88565 156 13 Elevage, agri (coton, sorgho, maïs) Kandi Sinanwongourou/Kommon(Kommon= Sinanwongourou/Kommon Vill. mère deuxième 11.12244 nom) 2.77672 1200 80 Bariba, Gando, Djerma, Haoussa Immigrés agricoles Agri (coton, (saisonniers Lieux maïs,sacrés: sorgho, ou définitifs) , coton, Somborou riz), maraîchage habitat et commerçants (arbre), moderne (tomate, Dangoo venant piment), (pierre), du élevage Niger Dankpidou ou du Nigéria don (arbre), Boundérou (pierre), Kabayari bonyérou (colline), kpétahorou (pierre),chefferie traditionnelle forte ( bien respectée) LA CARTOGRAFIA PER LA CONCERTAZIONE CAPITALIZZAZIONE: Kandi Sinanwongourou/Kommon Bountéré ham.perm. 11.15144 2.77697 264 22 Bariba Agri (coton, sorgho, maïs), petit élevage LA CARTOGRAFIA INTERATTIVA E MULTIMEDIALE Identificazione delle dinamiche in atto e delle criticità Strumento operativo per la presa di decisione Identificazione degli attori e delle poste in gioco 14
22/04/2014 THE SIGAP STRATEGY Modular methodology 1. KNOWLEDGE: observation, data collection, field research and interviews 2. PLANNING: data analysis, interpretation and GIS 3. NEGOTIATION: Focus Group, living labs and collaborative mapping 4. CAPITALIZATION: sharing knowledge and experience THE MAIN FEATURES OF COLLABORATIVE MAPPING FOLLOWING THE SIGAP STRATEGY 1) THE INTERPRETER OF THE MAP: A PLURALITY OF SOCIAL ACTORS Environmental conservation is a colonial legacy which implies today a participatory approach considering many social actors: national institutions, international organisations, researchers, ONG and associations, local communities The researcher as an intermediate actor facilitating the dialogue 2) DATA: LOCAL KNOWLEDGE RECOVERED BY FIELD RESEARCH If a topographical map shows legal territorial organisation, following legal and administrative criteria, participatory mapping shows local traditional organisation: following historical and traditional criteria and also traditional knowledge The importance of denomination: the need of a «de-codification» of the meaning to recover local knowledge 3) GRAPHIC REPRESENTATION: MULTIPLE OPPORTUNITIES GIVEN BY ICT - 2D and 3D representations - Participatory drawings and Community integrated GIS 15
22/04/2014 TWO EXAMPLES OF COLLABORATIVE MAPPING MULTIMAP (www.multimap-parcw.org) Within a EU project of environmental conservation in Western Africa Bergamo Open Mapping (www.bgopenmapping.it) Within the Candidacy of the city of Bergamo as European Capital of Culture 2019 Geographies for intercultural dialogue: collaborative mapping in Subsaharan Africa 16
22/04/2014 www.multimap-parcw.org Niger WAP COMPLEX (W, Arly and Pendjari) Burkina Faso Bénin www.multimap-parcw.org NP Pendjari 2001-2005 W TBR and 2006-2009 ARLY Partners: Universities of Bergamo, Ouagadougou, Niamey, Cotonou Cooperation Project: Regional Programme Parc W/ECOPAS (Europen Development Fund) 17
22/04/2014 www.multimap-parcw.org EU priorities a) recover the territorial organization of local communities b) build instruments of environmental management c) promote local sustainable development 4 Universities, 15 researchers, many stakeholders in local communities • identification of different social actors and analysis of the territorial organization • negotiation between local communities and environmental institutions • creation of capitalization and decision-support systems From 40 villages already known to about 1570 villages never mapped before Niger Burkina Faso Bénin 18
22/04/2014 W UNESCO TRANSBOUNDARY BIOSPHERE RESERVE AND REGIONAL PARK «Knowledge Mapping» 0 50 km W UNESCO TRANSBOUNDARY BIOSPHERE RESERVE AND REGIONAL PARK Collaborative mapping for decision making Creating a dialogue between local communities and parks managers 19
22/04/2014 Map of the southern regions of Scioa made by an Abyssin (1886) Source: A. Cecchi (1886), Da Zeila alle frontiere del Caffa, vol.1-2-3, SGI, Roma, Loesher, tav. 4 «sketch collaborative mapping» 20
22/04/2014 The participatory drawing of the foundation of the village of Kondio (Burkina Faso) Cartographers: chief’s councellors and sacred places guides Symbolic knowledge on natural resources: Tingwana kpambu vegetation Tamboana kpambu fauna Kingandi nakpambu Goalmina kpambu pedology Farmers settlements hydrography Jurisdictional knowledge villages Participatory drawing of the village showing the creation of the protected area Cartographers: the farmers association No symbolic knowledge vegetation fauna New jurisdiction borders Farmers settlements Reserves Denial of symbolic values and new jurisdiction 21
22/04/2014 W UNESCO TRANSBOUNDARY BIOSPHERE RESERVE AND REGIONAL PARK The digitalisation of sketch maps and the local scale TBR W Tingoana Tingoana kpambu Gbansangou Tamboana Tamboana Goalmina Kindgandi Kindgandi Goalmi kpambu kpambu nakpambu Poste forestier Cimokiali Hotel wudodanou Bosswanga Sangwakiali Seri Natongou Niamonga Palboa Kourtiagou Game Reserve pedologi vegetazione Lignaggi Concessione atimbwoanli Area pastorale mercato tintankiagui Coldjat Tankwano pozzo Insediamento agricolo tintanbima luogo di raccolta iCombari Swobu Idrografia forage moschea tingboanga Wali Lompo pista scuola Antico insediamento sacrée Corso permanente Yonli Altro temporaneo Woba dipendenza COLLABORATIVE MAPPING AND TRADITIONAL KNOWLEDGE SYMBOLIC KNOWLEDGE: socially recognisable values such as history and myth (sacred sites, places of foundation) FUNCTIONAL KNOWLEDGE: aimed at intellectual knowledge and material practices for the identification of locations in which productive activities take place (agricultural and pastoral areas, hunting and fishing grounds and areas which are harvested) JURISDICTIONAL KNOWLEDGE: which give information regarding the social and territorial organisation of the local community (village boundaries, position of land, political and religious authorities) 22
22/04/2014 W UNESCO TRANSBOUNDARY BIOSPHERE RESERVE AND REGIONAL PARK www.multimap-parcw.org DIATHESIS LAB WEB-BASED COLLABORATIVE MAPPING www.bgopenmapping.it 23
22/04/2014 PARTICIPATION LEVELS in the Candidate cities as European Capital of Culture 2019 Bergamo Venezia e il Nordest Torino Mantova RAVENNA Pisa Urbino SIENA PERUGIA-ASSISI L’Aquila Caserta MATERA Bari Brindisi LECCE Amalfi Taranto CAGLIARI ACTIVE PARTICIPATION Catanzaro Participation as COLLECTION OF SUGGESTIONS Palermo Participation as INFORMATION Siracusa LACK OF PARTICIPATION or LACK OF WEBSITE The process of PARTICIPATION in Bergamo Open Mapping CONSULTATION • Focus Group for • IDENTIFICATION of supporting the use of • Public presentation social actors the web-based of the more voted • ORGANISATION of mapping system initiatives meetings • Users individually: • Rewarding • COMMUNICATION insert markers and mechanism printed material and lines, add a text description on cultural • Meeting between social networks proponents and initiatives , add pictures Bergamo 2019 Steering Committee • Consensus and merit ranking by vote • Supporting initiatives in the COMMUNICATION Candidacy Report • Living Labs for shared urban planning NEGOCIATION 24
22/04/2014 … A M U LT I A C T O R P R O C E S S • Parishes • University internships • Local administrations • Students associations • Neighborhoods • Middle and High schools ASSOCIATIONS • Young people CITIZENS STUDENTS • Cultural organisations • Local groups • Educational/cultural Institutions • Administrations • Private initiatives STAKEHOLDERS Released in March 2013 www.bgopenmapping.it Information: 1. institutional data sets 2. data collected in field research 3. crowd-sourced data 25
22/04/2014 www.bgopenmapping.it Information: 1. institutional data sets 2. data collected in field research 3. crowd-sourced data Released in March 2013 www.bgopenmapping.it Information: 1. institutional data sets 2. data collected in the field 3. crowd-sourced data 26
22/04/2014 SOME NUMBERS … Users: 4793 Initiatives: 110 Province 79 72% MARCH-SEPTEMBER Registered users: 306 City 31 28% VGI analysis Proposal of activities 44 40% Place valorization 38 35% Mixed proposals 21 19% Places restoration 7 6% SOME NUMBERS … mills, farm houses, small industries 56 churches, sanctuaries, monasteries castles, towers, gates, villas, palaces hospitals, electric powers 27
22/04/2014 WHAT IS THE MAPMAKER ASKING FOR ? PLACES • Open public buildings for cultural initiatives • Create lively public spaces as places of culture (painting, sculpture, music, dance, theatre, cinema, …) • Discover unknown places and valorize the local culture (dialect, local knowledge …) ACTIVITIES • Low environmental impact (cycling routes, pedestrian paths, recovering already existing buildings…) • With high social impact (collective cultural activities, group excursions, …) • Creativity, art in unusual places (paintings in the caves, concerts in the electric power stations, cinema in the villas…) RECEIVER • To envolve young people • To attract visitors from Europe 28
22/04/2014 Ten initiatives presented to the Bergamo 2019 Committee 1. ITINERARI CULTURALI e AMBIENTALI NEL TERRITORIO DI PONTERANICA Proponente: GIUSEPPE GUALINI Associazione/Ente: ASSOCIAZIONE PENSIERI E PAROLE 2. DOORS TO EUROPE E FLOWING CULTURE: ALLA SCOPERTA DELL’ALTA VALLE BREMBANA Proponente: ANDREA PALENI Associazione/Ente: ALTOBREMBO 3. SCUOLA DI MUSICA NEL PALAZZO DEL VICARIO DI VALLE Proponente: ANDREA CHIESA Associazione/Ente: COMUNE DI ALBINO 4. POLO DI INNOVAZIONE CULTURALE NELL’EX-CENTRALE TERMICA I.R.F. Proponente: FABRIZIO TERZI Associazione/Ente: BERGAMO HUB 5. ONE THOUSAND SOUNDS: FESTIVAL MUSICALE DEGLI STUDENTI UNIVERSITARI EUROPEI Proponente: MARIO GHIDINI Associazione/Ente: ASSOCIAZIONE STUDENTI UNIBG 6. ALLA SCOPERTA DELL’ARTE NELLA GROTTA EUROPA Proponente: PIERO CATTANEO Associazione/Ente: GRUPPO SPELEOLOGICO VALLE IMAGNA 7. GIOVANI ARTISTI EUROPEI IN MOSTRA PRESSO GLI OSPEDALI RIUNITI DI BERGAMO Proponente: CATERINA GIUPPONI Associazione/Ente: UTENTE PRIVATO 8. L’ARTE E I LUOGHI DELL’ACQUA: ALLA SCOPERTA DEI LUOGHI NASCOSTI DI CITTA’ ALTA Proponente: GIOVANNI GINOULHIAC e IVANA CATTANEO Associazione/Ente: ASSOCIAZIONE CITTÀ ALTA E COLLI DI BERGAMO 9. CAPOLAVORI CINEMATOGRAFICI A VILLA DEI TASSO Proponente: DIANA SANA Associazione/Ente: UTENTE PRIVATO 10. CAMPUS SCOLASTICO A CASCINA CA’ VALOTI Proponente: SARA BERGAMELLI Associazione/Ente: BIBLIOTECA CENTRO CULTURA NEMBRO Towards the second phase: Living Labs for collaborative urban planning 29
22/04/2014 SOME ISSUES COMING FROM THE EXPERIENCE AUTHORSHIP: A COMPLEX DEFINITION the promoter: from single citizens to many stakeholders (supporter, developer, producer, …) the user: from the individual to the real and a virtual community theBENEFICIARY THE beneficiary: from citizens to researchers, institutions and private organisations QUALITY: ACCURACY, DIVERSITY, CONSENSUS accuracy in geolocalisation multifaceted perspective in data attributes (eg. the same place can have multiple place-names, descriptions, pictures, …) quality is proportional to other users validation and consensus TECHNOLOGY: OPEN, UBIQUITOUS, TRACEABLE, STORED open source software and open data proliferation of Location Based Services real time control of data production or use collection, storage and management of huge amounts of data digital divide? PRAGMATICS: IMPACT OF COLLABORATIVE MAPPING ON SPATIAL PLANNING what happens during the process and afterwords? who uses the information, how and for what pursposes? what is the actual contribution of collaborative mapping? 30
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