( ( ( Stand ( structure types ) ) ( have ( been ( used ( in ( ( numerous ( regional ( wildlife ( habitat ( studies ( and ( forest ( secondary ( succession studies ) ) ) ) ) ) ) ) ) ( -LRB- ( ( e.g. , ) ( Thomas 1979 ) ) ) ) ) ) ) ) ) ( , ( ( Arno et ) ( al. . ) ) ) )
(ROOT (S (S (NP (JJ Stand) (NN structure) (NNS types)) (VP (VBP have) (VP (VBN been) (VP (VBN used) (PP (IN in) (NP (NP (JJ numerous) (JJ regional) (NN wildlife) (NN habitat) (NNS studies) (CC and) (NN forest) (JJ secondary) (NN succession) (NNS studies)) (PRN (-LRB- -LRB-) (NP (NNP e.g.)) (, ,) (NP (NNP Thomas) (CD 1979))))))))) (, ,) (NP (NNP Arno) (NNP et)) (VP (VBP al.)) (. .)))
Stand structure types have been used in numerous regional wildlife habitat studies and forest secondary succession studies (e.g., Thomas 1979, Arno et al.
(ROOT (S (NP (JJ Secondary) (NN succession)) (VP (VBZ is) (NP (NP (DT the) (NN type)) (PP (IN of) (NP (NN succession))) (SBAR (WHNP (WDT that)) (S (VP (VBZ happens) (PP (IN after) (NP (NP (DT the) (NN destruction)) (PP (IN of) (NP (DT a) (NN habitat)))))))))) (. .)))