Définition : The quotient of the dry weight of the shoots produced during a given growth period divided by the dry weight of the roots esp. for crop plants.
Commentaire : Replace with http://purl.obolibrary.org/obo/TO_0000278
Définition : A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
Définition : The institution that holds a type specimen for a given species. The recommended best practice is to use the identifier in a collections registry such as the Biodiversity Collections Index (http://www.biodiversitycollectionsindex.org/).
