Sardinella lemuru abundance in Bali Strait: IOD or ENSO

Dinarika Jatisworo; Denny Wijaya Kusuma; Bambang Sukresno; Rizki Hanintyo

doi:10.1117/12.2619431

Sardinella lemuru abundance in Bali Strait: IOD or ENSO

Dinarika Jatisworo^*, Denny Wijaya Kusuma, Bambang Sukresno, Rizki Hanintyo

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

Sardinella lemuru is important species and only exists in Bali Strait. In recent years (1980-2019), the fishing condition in Bali Strait is highly volatile. This condition makes lemuru catching locations are challenging to predict. According to catch data, Sardinella lemuru has collapsed and dramatically vanished in 1999, 2011, and 2017. Here, we examined the collapse was due to the impact of IOD or ENSO. According to wavelet coherence analysis, there was a strong association between IOD or ENSO phenomenon with decrease or increase in lemuru catches occurred in 2007-2012 with power 0.6 for IOD and 0.5 for ENSO. After those years, the coherence shows a weak association. The result of wavelet coherency in this study found that the incidence of lemuru collapse in the years 2011 and 2017 was caused by different factors. In 2011 decrease of lemuru was strongly coherent with the occurrence of positive IOD and La Nina events, but in 2017 lemuru decreased was not coherent with IOD (positive/negative) or ENSO (El Nino/La Nina) event.

Original language	English
Title of host publication	Seventh Geoinformation Science Symposium 2021
Editors	Sandy Budi Wibowo, Pramaditya Wicaksono
Publisher	SPIE
ISBN (Electronic)	9781510650404
DOIs	https://doi.org/10.1117/12.2619431
Publication status	Published - 2021
Externally published	Yes
Event	7th Geoinformation Science Symposium 2021 - Yogyakarta, Indonesia Duration: 25 Oct 2021 → 28 Oct 2021 Conference number: 7

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12082
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	7th Geoinformation Science Symposium 2021
Country/Territory	Indonesia
City	Yogyakarta
Period	25/10/21 → 28/10/21

Keywords

Bali Strait
ENSO
IOD
Sardinella lemuru
Wavelet Coherency
ITC-CV

Access to Document

10.1117/12.2619431

Cite this

@inproceedings{8d09e82c53d3473986aa6adac6671407,

title = "Sardinella lemuru abundance in Bali Strait: IOD or ENSO",

abstract = "Sardinella lemuru is important species and only exists in Bali Strait. In recent years (1980-2019), the fishing condition in Bali Strait is highly volatile. This condition makes lemuru catching locations are challenging to predict. According to catch data, Sardinella lemuru has collapsed and dramatically vanished in 1999, 2011, and 2017. Here, we examined the collapse was due to the impact of IOD or ENSO. According to wavelet coherence analysis, there was a strong association between IOD or ENSO phenomenon with decrease or increase in lemuru catches occurred in 2007-2012 with power 0.6 for IOD and 0.5 for ENSO. After those years, the coherence shows a weak association. The result of wavelet coherency in this study found that the incidence of lemuru collapse in the years 2011 and 2017 was caused by different factors. In 2011 decrease of lemuru was strongly coherent with the occurrence of positive IOD and La Nina events, but in 2017 lemuru decreased was not coherent with IOD (positive/negative) or ENSO (El Nino/La Nina) event.",

keywords = "Bali Strait, ENSO, IOD, Sardinella lemuru, Wavelet Coherency, ITC-CV",

author = "Dinarika Jatisworo and Kusuma, {Denny Wijaya} and Bambang Sukresno and Rizki Hanintyo",

note = "Publisher Copyright: {\textcopyright} 2021 SPIE.; 7th Geoinformation Science Symposium 2021 ; Conference date: 25-10-2021 Through 28-10-2021",

year = "2021",

doi = "10.1117/12.2619431",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Wibowo, {Sandy Budi} and Pramaditya Wicaksono",

booktitle = "Seventh Geoinformation Science Symposium 2021",

address = "United States",

}

Jatisworo, D, Kusuma, DW, Sukresno, B & Hanintyo, R 2021, Sardinella lemuru abundance in Bali Strait: IOD or ENSO. in SB Wibowo & P Wicaksono (eds), Seventh Geoinformation Science Symposium 2021., 120820I, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12082, SPIE, 7th Geoinformation Science Symposium 2021, Yogyakarta, Indonesia, 25/10/21. https://doi.org/10.1117/12.2619431

Sardinella lemuru abundance in Bali Strait: IOD or ENSO. / Jatisworo, Dinarika; Kusuma, Denny Wijaya; Sukresno, Bambang et al.
Seventh Geoinformation Science Symposium 2021. ed. / Sandy Budi Wibowo; Pramaditya Wicaksono. SPIE, 2021. 120820I (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12082).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Sardinella lemuru abundance in Bali Strait

T2 - 7th Geoinformation Science Symposium 2021

AU - Jatisworo, Dinarika

AU - Kusuma, Denny Wijaya

AU - Sukresno, Bambang

AU - Hanintyo, Rizki

N1 - Conference code: 7

PY - 2021

Y1 - 2021

N2 - Sardinella lemuru is important species and only exists in Bali Strait. In recent years (1980-2019), the fishing condition in Bali Strait is highly volatile. This condition makes lemuru catching locations are challenging to predict. According to catch data, Sardinella lemuru has collapsed and dramatically vanished in 1999, 2011, and 2017. Here, we examined the collapse was due to the impact of IOD or ENSO. According to wavelet coherence analysis, there was a strong association between IOD or ENSO phenomenon with decrease or increase in lemuru catches occurred in 2007-2012 with power 0.6 for IOD and 0.5 for ENSO. After those years, the coherence shows a weak association. The result of wavelet coherency in this study found that the incidence of lemuru collapse in the years 2011 and 2017 was caused by different factors. In 2011 decrease of lemuru was strongly coherent with the occurrence of positive IOD and La Nina events, but in 2017 lemuru decreased was not coherent with IOD (positive/negative) or ENSO (El Nino/La Nina) event.

AB - Sardinella lemuru is important species and only exists in Bali Strait. In recent years (1980-2019), the fishing condition in Bali Strait is highly volatile. This condition makes lemuru catching locations are challenging to predict. According to catch data, Sardinella lemuru has collapsed and dramatically vanished in 1999, 2011, and 2017. Here, we examined the collapse was due to the impact of IOD or ENSO. According to wavelet coherence analysis, there was a strong association between IOD or ENSO phenomenon with decrease or increase in lemuru catches occurred in 2007-2012 with power 0.6 for IOD and 0.5 for ENSO. After those years, the coherence shows a weak association. The result of wavelet coherency in this study found that the incidence of lemuru collapse in the years 2011 and 2017 was caused by different factors. In 2011 decrease of lemuru was strongly coherent with the occurrence of positive IOD and La Nina events, but in 2017 lemuru decreased was not coherent with IOD (positive/negative) or ENSO (El Nino/La Nina) event.

KW - Bali Strait

KW - ENSO

KW - IOD

KW - Sardinella lemuru

KW - Wavelet Coherency

KW - ITC-CV

U2 - 10.1117/12.2619431

DO - 10.1117/12.2619431

M3 - Conference contribution

AN - SCOPUS:85124702533

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Seventh Geoinformation Science Symposium 2021

A2 - Wibowo, Sandy Budi

A2 - Wicaksono, Pramaditya

PB - SPIE

Y2 - 25 October 2021 through 28 October 2021

ER -

Sardinella lemuru abundance in Bali Strait: IOD or ENSO

Abstract

Publication series

Conference

Keywords

Access to Document

Fingerprint

Cite this