4 th IGEOS – International Geography Seminar and PIT IGI 2020

Cimandiri Estuary Zonation Based on Sea Surface Salinity from Sentinel-2 Imagery and its Relation with the Catching Spots Distribution of Anguilla spp. Larvae

TRIANA DEVI PRATIWI*, S. SUPRIATNA, IQBAL PUTUT ASH SHIDIQ

DEPARTMENT OF GEOGRAPHY, FACULTY OF MATHEMATICS AND NATURAL SCIENCES, UNIVERSITASINDONESIA

Introduction

Estuary is a

transition zone

between the river

environment and

the marine

environment [1].

Estuary zone is

determined based

on the salinity

value which

ranges from 0.5-

30 ppt (part per

thousand) [4].

Temporary

inhabitant biota

according to

[7] is in the

form of adult

shrimp and fish

larvae.

One of the

factors that affect

the life of

Anguilla spp.

larvae is salinity

[8].

Method

Results and Discussion

Results and Discussion

Results and Discussion

Conclusion

The farthest limit of estuary boundary from the mouth of the Cimandiri river is 1.5 km in dry month. Meanwhile, in the wet month the estuary zone boundary farthest from the mouth of the Cimandiri river is 3.6 km. The difference in the distance between the estuary zone in the dry and wet months is due to the difference in the amount of rainfall.

The catch of Anguilla spp. larvae in the dry month is 1 kilogram a day, while in the wet month it only reaches 100-300 grams at the same location. The catching location for eel fish larvae is in areas with surface salinity values of 5-15 ppt. This is related to the distribution of salinity values in the Cimandiri Estuary area. In the wet month, the distribution of salinity values in the range of 0.5-30 ppt is wider but the catch is less. Meanwhile, in the dry month, the distribution of salinity values in the range of 0.5-30 ppt is smaller, but the catch of eel fish larvae is more.

References

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