. 2009 May 6;4(5):e5333. doi: 10.1371/journal.pone.0005333

Table 3. Regression statistics of predatory reef-fish presence across a gradient of human population density.

Family	Taxa	Common name	TL_max (cm)	Intercept	SE	Coef	SE	t-Value	p-Value ^C
Aulostomidae	Aulostomus maculatus	trumpetfish	100	0.4827	0.0306	0.0005	0.0002	3.089	0.0027*
Carangidae	Caranx spp.	jacks^a	69^b	0.7690	0.0242	−0.0003	0.0001	−2.374	0.0199
Carcharhinidae	Carcharhinus spp.	requiem sharks^a	300^b	0.0887	0.0142	−0.0002	0.0001	−4.152	0.0001*
Lutjanidae	Lutjanus cyanopterus	cubera snapper^a	160	0.0672	0.0095	−0.0002	0.0000	−5.572	<0.0001*
	L. jocu	dog snapper^a	128	0.0975	0.0142	−0.0001	0.0001	−2.131	0.0361
	L. analis	mutton snapper^a	94	0.1659	0.0198	−0.0002	0.0001	−1.770	0.0805
	L. griseus	gray snapper	89	0.1551	0.0165	−0.0002	0.0001	−2.568	0.0120
	Ocyurus chrysurus	yellowtail snapper	86	0.7602	0.0272	−0.0004	0.0001	−2.980	0.0038*
	L. apodus	schoolmaster	67	0.6091	0.0338	−0.0006	0.0002	−3.606	0.0005*
	L. synagris	lane snapper	60	0.0509	0.0126	0.0002	0.0001	3.015	0.0034*
	L. mahogoni	mahogany snapper	48	0.3445	0.0304	0.0003	0.0002	1.992	0.0497
Serranidae	Mycteroperca bonaci	black grouper^a	148	0.1810	0.0190	−0.0006	0.0001	−6.858	<0.0001*
	Epinephelus striatus	Nassau grouper^a	122	0.4607	0.0321	−0.0013	0.0002	−9.206	<0.0001*
	M. tigris	tiger grouper^a	101	0.3112	0.0251	−0.0009	0.0001	−7.882	<0.0001*
	M. venenosa	yellowfin grouper^a	100	0.0358	0.0042	−0.0001	0.0000	−4.753	<0.0001*
	E. guttatus	red hind^a	76	0.0090	0.0015	−0.0001	0.0000	−3.778	0.0003*
	E. adscensionis	rock hind^a	61	0.0873	0.0138	−0.0001	0.0001	−1.366	0.1756
	Cephalopholis cruentata	graysby	43	0.4705	0.0305	0.0004	0.0002	2.510	0.0140
	C. fulva	coney	41	0.4632	0.0385	0.0004	0.0002	1.873	0.0646
Sphyraenidae	Sphyraena barracuda	barracuda	200	0.4616	0.0278	−0.0006	0.0001	−4.447	<0.0001*

Regression coefficient and intercept values computed from untransformed data; test statistics computed from arcsine(ˆ0.5) transformed data (Zar 1999).

Size data for sharks and jacks are from Caribbean reef shark (Carcharhinus perezii) and bar jack (Caranx ruber), respectively, which were the most common family representatives.

Significant test after correction for multiple comparisons using sequential Bonferroni noted (*).

Note: Barbados was removed from the regressions since its high HPD (642people/km²) was approximately 50% greater than the second highest nation (i.e., outlier), and therefore quantitatively exaggerated the effect of HPD; trends were qualitatively unaffected.