The number (and type) of plant species was reduced at different sites to represent the gradual loss of biodiversity from grasslands.
(The number (and type) of plant species; was reduced; L:at different sites; to represent the gradual loss of biodiversity from grasslands) (The number (and type) of plant species; to represent; the gradual loss of biodiversity from grasslands)
The number (and type) of plant species The number (and type) of plant species
was reduced to represent
L:at different sites to represent the gradual loss of biodiversity from grasslands
the gradual loss of biodiversity from grasslands