Abstract
To identify herbivorous grazing species and record their occurrence frequency in a nori Neopyropia yezoensis and an ao-nori Ulva linza seaweed farm, we conducted observation studies using three types of camera. A time-lapse camera (TLC200Pro) and an intermittent video camera (Raspberry pi) were used to record the occurrence and behavior of fish, while a 3G camera (TREL3G) that can send images via e-mail was used to monitor the occurrence of ducks. The factors that affected the occurrence frequency of ducks were also examined. The occurrence and feeding-like behavior of ducks Anas spp. and black sea bream Acanthopagrus schlegelii were frequently recorded in the nori farm, and those of mullet Mugil cephalus were recorded in the ao-nori farm. There was a strong autocorrelation in the daily total number of ducks, and once they occurred, they tended to continue the following day.
| Translated title of the contribution | Recording of occurrences of herbivorous grazing species in a nori and an ao-nori seaweed farming site by various camera methods |
|---|---|
| Original language | Japanese |
| Journal | Nippon Suisan Gakkaishi (Japanese Edition) |
| Volume | 89 |
| Issue number | 1 |
| Pages (from-to) | 34-48 |
| Number of pages | 15 |
| ISSN | 0021-5392 |
| DOIs | |
| Publication status | Published - 2023 |
| Externally published | Yes |
Bibliographical note
Times Cited in Web of Science Core Collection: 0 Total Times Cited: 0 Cited Reference Count: 30Keywords
- WAKAME UNDARIA-PINNATIFIDA
- LONG-TERM CHANGES
- SETO INLAND SEA
- ENVIRONMENTAL-FACTORS
- GROWTH
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