( ( Ecosystem ( Balance Homing ) ) ( ( ( is also ) ( believed ( to ( ( play ( ( an ( important role ) ) ( in ( ecosystem stabilization ) ) ) ) ( at ( salmon ( breeding grounds ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Ecosystem) (NNP Balance) (NNP Homing)) (VP (VBZ is) (ADVP (RB also)) (VP (VBN believed) (S (VP (TO to) (VP (VB play) (NP (NP (DT an) (JJ important) (NN role)) (PP (IN in) (NP (NN ecosystem) (NN stabilization)))) (PP (IN at) (NP (NN salmon) (VBG breeding) (NNS grounds)))))))) (. .)))
Ecosystem Balance Homing is also believed to play an important role in ecosystem stabilization at salmon breeding grounds.
(ROOT (S (NP (NNP Beneficial) (NNS fungi)) (VP (VBP play) (NP (NP (DT a) (JJ crucial) (NN role)) (PP (IN in) (NP (NP (NN balance)) (PP (IN of) (NP (NNS ecosystems))))))) (. .)))
Beneficial fungi play a crucial role in balance of ecosystems.