( ( ( The issue ) ( of ( ( the role ) ( that ( ( ( the diversity ) ( of ( ( both ( plant ( and ( animal components ) ) ) ) ( of ( rangeland ecosystems ) ) ) ) ) ( play ( in ( maintaining ( good ( rangeland condition ) ) ) ) ) ) ) ) ) ) ( ( needs ( to ( be evaluated ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN issue)) (PP (IN of) (NP (NP (DT the) (NN role)) (SBAR (IN that) (S (NP (NP (DT the) (NN diversity)) (PP (IN of) (NP (NP (DT both) (NN plant) (CC and) (NN animal) (NNS components)) (PP (IN of) (NP (JJ rangeland) (NNS ecosystems)))))) (VP (VBP play) (PP (IN in) (S (VP (VBG maintaining) (NP (JJ good) (JJ rangeland) (NN condition))))))))))) (VP (VBZ needs) (S (VP (TO to) (VP (VB be) (VP (VBN evaluated)))))) (. .)))
The issue of the role that the diversity of both plant and animal components of rangeland ecosystems play in maintaining good rangeland condition needs to be evaluated.
(ROOT (S (NP (NP (DT A) (NN role)) (PP (IN of) (NP (NP (NNS mushrooms)) (PP (IN in) (NP (NNS ecosystems)))))) (VP (VBZ is) (VP (VBG breaking) (PRT (RP down)) (NP (JJ dead) (NN plant) (NN material)))) (. .)))