"Half of the studies provide strong evidence of a causal link between the biological change and climate change," said Camille Parmesan, a University of Texas-Austin biologist and one of the world's leading experts on this issue.
1	"	"	PUNCT	``	_	22	punct	22:punct	SpaceAfter=No
2	Half	half	NOUN	NN	Number=Sing|NumForm=Word|NumType=Frac	6	nsubj	6:nsubj	_
3	of	of	ADP	IN	_	5	case	5:case	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	5:det	_
5	studies	study	NOUN	NNS	Number=Plur	2	nmod	2:nmod:of	_
6	provide	provide	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	22	ccomp	22:ccomp	_
7	strong	strong	ADJ	JJ	Degree=Pos	8	amod	8:amod	_
8	evidence	evidence	NOUN	NN	Number=Sing	6	obj	6:obj	_
9	of	of	ADP	IN	_	12	case	12:case	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	12:det	_
11	causal	causal	ADJ	JJ	Degree=Pos	12	amod	12:amod	_
12	link	link	NOUN	NN	Number=Sing	8	nmod	8:nmod:of	_
13	between	between	ADP	IN	_	16	case	16:case	_
14	the	the	DET	DT	Definite=Def|PronType=Art	16	det	16:det	_
15	biological	biological	ADJ	JJ	Degree=Pos	16	amod	16:amod	_
16	change	change	NOUN	NN	Number=Sing	12	nmod	12:nmod:between	_
17	and	and	CCONJ	CC	_	19	cc	19:cc	_
18	climate	climate	NOUN	NN	Number=Sing	19	compound	19:compound	_
19	change	change	NOUN	NN	Number=Sing	16	conj	12:nmod:between|16:conj:and	SpaceAfter=No
20	,	,	PUNCT	,	_	22	punct	22:punct	SpaceAfter=No
21	"	"	PUNCT	''	_	22	punct	22:punct	_
22	said	say	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
23	Camille	Camille	PROPN	NNP	Number=Sing	22	nsubj	22:nsubj	_
24	Parmesan	Parmesan	PROPN	NNP	Number=Sing	23	flat	23:flat	SpaceAfter=No
25	,	,	PUNCT	,	_	23	punct	23:punct	_
26	a	a	DET	DT	Definite=Ind|PronType=Art	32	det	32:det	_
27	University	University	PROPN	NNP	Number=Sing	32	compound	32:compound	_
28	of	of	ADP	IN	_	29	case	29:case	_
29	Texas	Texas	PROPN	NNP	Number=Sing	27	nmod	27:nmod:of	SpaceAfter=No
30	-	-	PUNCT	HYPH	_	27	punct	27:punct	SpaceAfter=No
31	Austin	Austin	PROPN	NNP	Number=Sing	27	appos	27:appos	_
32	biologist	biologist	NOUN	NN	Number=Sing	23	appos	23:appos	_
33	and	and	CCONJ	CC	_	34	cc	34:cc	_
34	one	one	NUM	CD	NumForm=Word|NumType=Card	32	conj	23:appos|32:conj:and	_
35	of	of	ADP	IN	_	40	case	40:case	_
36	the	the	DET	DT	Definite=Def|PronType=Art	37	det	37:det	_
37-38	world's	_	_	_	_	_	_	_	_
37	world	world	NOUN	NN	Number=Sing	40	nmod:poss	40:nmod:poss	_
38	's	's	PART	POS	_	37	case	37:case	_
39	leading	lead	VERB	VBG	VerbForm=Ger	40	amod	40:amod	_
40	experts	expert	NOUN	NNS	Number=Plur	34	nmod	34:nmod:of	_
41	on	on	ADP	IN	_	43	case	43:case	_
42	this	this	DET	DT	Number=Sing|PronType=Dem	43	det	43:det	_
43	issue	issue	NOUN	NN	Number=Sing	40	nmod	40:nmod:on	SpaceAfter=No
44	.	.	PUNCT	.	_	22	punct	22:punct	_
