Freshwater crab Nature (IUCN); of the species for which data are available, 32% are threatened with extinction. For instance, all but one of Sri Lanka's 50 freshwater crab species are endemic to that country, and more than half are critically endangered. Freshwater crab There are around 1,300 species of freshwater crabs, distributed throughout the tropics and subtropics, divided among eight families. They show direct development and maternal care of a small number of offspring, in contrast to marine crabs which release thousands of planktonic larvae. This limits the dispersal abilities of freshwater crabs, so they tend to be endemic to small areas.
Short food supply chains proximate, extended. Face to face are characterized by physical encounters between producers and consumers (as in the case of farmers' markets). In the proximate short food supply chains producers are not necessarily managing product distribution (as in the case of consumers' cooperatives). In the extended short food supply chains, although geographical distances between producers and consumers may be long, consumers are aware of the identity of the producers and of the products (such as in the case of fair trade and protected denominations of origin). An action plan developed in 2009 at the Ministry of Agriculture, Agrifood, and Forestry of