( ( In ( another study ) ) ( we ( ( are ( ( using ( ( the ( Terrestrial ( Ecosystem Model ) ) ) ( -LRB- ( TEM -RRB- ) ) ) ) ( to ( ( evaluate ( ( the role ) ( of ( high ( latitude ecosystems ) ) ) ) ) ( in ( the ( global ( carbon cycle ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (DT another) (NN study))) (NP (PRP we)) (VP (VBP are) (VP (VBG using) (NP (NP (DT the) (NNP Terrestrial) (NNP Ecosystem) (NNP Model)) (PRN (-LRB- -LRB-) (NP (NNP TEM)) (-RRB- -RRB-))) (S (VP (TO to) (VP (VB evaluate) (NP (NP (DT the) (NN role)) (PP (IN of) (NP (JJ high) (NN latitude) (NNS ecosystems)))) (PP (IN in) (NP (DT the) (JJ global) (NN carbon) (NN cycle)))))))) (. .)))
In another study we are using the Terrestrial Ecosystem Model (TEM) to evaluate the role of high latitude ecosystems in the global carbon cycle.
(ROOT (S (NP (NP (DT A) (JJ primary) (NN role)) (PP (IN of) (NP (NP (NNS decomposers)) (PP (IN in) (NP (DT an) (NN ecosystem)))))) (VP (VBZ is) (SBAR (IN that) (S (NP (PRP they)) (VP (VBZ cycle) (NP (NN matter)) (PP (IN by) (S (VP (VBG returning) (NP (NN carbon) (CC and) (JJ other) (NN matter)) (PP (TO to) (NP (DT the) (NN ecosystem)))))))))) (. .)))
A primary role of decomposers in an ecosystem is that they cycle matter by returning carbon and other matter to the ecosystem.