Long-term monitoring for conservation: closing the distribution gap of Arctocephalus australis in central Chile

BMC Research Notes

Table 1 Aerial synoptic and partial censuses schedule and total fur seals sighted (Arctocephalus australis)

Location name	Date	Hour	Latitude	Longitude	M	F	J	P	Total	Type of colony
Islote Pájaros Sur	02.17.2019	15:27	29° 34ʹ S	71° 32ʹ W	4	4	0	0	8	Not applicable
Punta Curaumilla	03.03.2019	13:30	33° 05ʹ S	71° 44ʹ W	107	421	56	11	595	Non-breeding colony
Punta Topocalma	03.03.2019	16:57	34° 08ʹ S	72° 00ʹ W	25	15	0	6	46	Non-breeding colony
Islote Farellón	02.23.2019	15:17	36° 57ʹ S	73° 32ʹ W	82	145	0	19	246	Breeding colony
Total Summer 2019					218	585	56	36	895
Punta Curaumilla	10.06.2019	09:29	33° 05ʹ S	71° 44ʹ W	20	23	3	0	46	Non-breeding colony
Punta Topocalma	10.06.2019	10:25	34° 08ʹ S	72° 00ʹ W	4	1	4	0	9	Non-breeding colony^a
Total Spring 2019					24	24	7	0	55
Punta Curaumilla	02.03.2020	08:09	33° 05ʹ S	71° 44ʹ W	220	457	44	23	744	Breeding colony^b
Total Summer 2020					220	457	44	23	744

During the austral summer of 2019, spring of 2019 and summer of 2020, along the distribution gap (29° 02′ S–43° 36′ S) for Arctocephalus australis in the southeast Pacific coast of Chile. Type of colony: Non-breeding (> 25 adult ind., < 15 pups), Breeding (> 25 adult ind., > 15 pups), Not applicable (< 25 adult ind.). Age classes: M: Adult males, F: Adult females, J: Juveniles, P: Pups
^aAlthough this colony showed lower numbers of individuals in the spring aerial survey compared to the summer field sampling (does not meet the criteria stipulated by Grandi et al. [28]), we considered it a colony since it exhibited an increase in abundance and more than 25 adult individuals during the summer season of 2019
^bPunta Curaumilla was listed as a non-breeding colony in the summer season of 2019 and as a breeding colony in 2020. We considered it a breeding colony in the text since it exhibited an increase in pup abundance over time
See hyperlinked to Additional file 1

ISSN: 1756-0500