Brown bear-sea otter interactions along the Katmai coast: terrestrial and nearshore communities linked by predation Author Monson, Daniel H Author Taylor, Rebecca L Author Hilderbrand, Grant V Author Erlenbach, Joy A Author Coletti, Heather A Author Kloecker, Kimberly A Author Esslinger, George G Author Bodkin, James L text Journal of Mammalogy 2023 2022-11-11 104 1 171 183 http://dx.doi.org/10.1093/jmammal/gyac095 journal article 10.1093/jmammal/gyac095 0022-2372 10681810

Table 2. —Details of remote cameras operating at two marine mammal haulout sites (two cameras per site) along the Katmai coast, Alaska, in 2016 and 2017. Potential bear-days were defined as days when cameras were operational and include only days between the first and last day a bear was documented on an island (27 April to 19 October). Numbers in parentheses denote the number of potential bear-days when sea otters (seot) and/or harbor seals (hase) were hauled out. Bear-days are days a bear was recorded by either camera at a site. Interactions indicate incidents where bears deliberately approached hauled out animals and caused them to enter the water. aCamera in motion-sensing mode only - did not take time-lapse images.

Site	Cam. #	Start date	End date	Photo rate (#/h)	Total photos	Pot. bear-days	Bear-days	Interactions	Pred. events
Shakun	1	21MAR16	23MAY16	60/h	74,684	26 (26)	11	7 seot	3
Shakun	1	24MAY16	30JUN16	30/h	28,651	37 (37)	3	2 seot	0
Shakun	1	1JUL16	10SEP16	60/h	103,376	71 (71)	11	5 seot	1
Shakun	1	6OCT16	23OCT16	60/h	24,771	13 (13)	0	0	0
Shakun	1	21MAY17	20JUN17	60/h	41,703	30 (30)	0	0	0
Shakun	1	21JUN17	14AUG17	60/h	66,903	54 (54)	6	3 seot, 2 hase	0
Shakun	2	21MAR16	23MAY16	60/h	74,269	26 (26)	11	5 hase	0
Shakun	2	24MAY16	30JUN16	0/ha	0	37 (37)	na	na	na
Shakun	2	1JUL16	10SEP16	60/h	105,890	71 (71)	11	2 hase	0
Shakun	2	6OCT16	23OCT16	60/h	38,767	13 (13)	0	0	0
Shakun	2	21MAY17	20JUN17	60/h	39,684	30 (30)	0	0	0
Shakun	2	21JUN17	11AUG17	60/h	63,130	51 (51)	6	3 hase	1
W. Nina.	1	22MAR16	23MAY16	0/ha	90	26 (3)	5	na	na
W. Nina.	1	24MAY16	7JUL16	30/h	32,229	44 (2)	2	0	0
W. Nina.	1	8JUL16	24AUG16	60/h	68,372	47 (0)	8	0	0
W. Nina.	1	6OCT16	23DEC16	60/h	77,958	13 (4)	6	1 seot	1
W. Nina.	1	21MAY17	28JUN17	60/h	48,976	38 (22)	0	0	0
W. Nina.	1	29JUN17	20JUL17	60/h	26,202	21 (5)	0	0	0
W. Nina.	2	22MAR16	23MAY16	60/h	72,500	26 (3)	5	1 seot	1
W. Nina.	2	24MAY16	7JUL16	30/h	32,186	44 (2)	2	0	0
W. Nina.	2	8JUL16	5OCT16	30/h	64,514	89 (3)	8	1 seot	1
W. Nina.	2	6OCT16	16NOV16	60/h	40,825	13 (4)	6	2 seot	2
W. Nina.	2	21MAY17	28JUN17	60/h	48,996	38 (22)	0	0	0
W. Nina.	2	29JUN17	10AUG17	60/h	53,434	42 (8)	0	0	0