Andrew H. Altieri and Jon D. Witman. 2006. Local extinction of a foundation species in a hypoxic estuary: integrating individuals to ecosystem. Ecology 87:717–730.

Appendix E. A table of sea star densities and sizes before and after hypoxia.

		Seastar density (no./30 m2)	Seastar size (radius cm)
Site	Survey period	mean ± 1 SE	mean ± 1 SE
A	Spring	39.4 ± 5.9	9.3 ± 0.1
	Fall	4.0 ± 1.9	8.5 ± 0.2
	November	22.2 ± 5.6	9.9 ± 0.1
D	Spring	108.0 ± 43.4	8.9 ± 0.2
	Fall	4.0 ± 1.4	8.7 ± 0.1
	November	164.0 ± 32.6	10.1 ± 0.1
J	Spring	20.8 ± 13.7	8.7 ± 0.1
	Fall	23.6 ± 10.2	8.6 ± 0.1
	November	35.4 ± 13.8	10.7 ± 0.1

Notes: Values generally declined between the spring and fall surveys at two sites (A and D) that experienced greatest hypoxic stress and mussel die-off, but rebounded by the November survey.  A similar decline was not observed at site J which remained normoxic throughout the study period.  The large size of sea stars in November is evidence that the rebound in densities was due to immigration rather than larval recruitment.