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Table 3 Degree centrality results for new challenges

From: Rice production constraints and ‘new’ challenges for South Asian smallholders: insights into de facto research priorities

New challenges Degree centrality results
1997–2014 1997–2007 2008–2014
Environmental challenges    
 Biodiversity 13 2 13
 Climate change 10   10
 Ecosystems 24 15 19
 Natural resource management 14 5 14
 Sustainability 15 5 14
 Crop diversification 8 4 5
 Food security 19 5 18