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STUDI KANDUNGAN NITRAT (NO-) DAN FOSFAT 3(PO-3) PADA SEDIMEN TERHADAP KONDISI 4 PENUTUPAN LAMUN DI PERAIRAN PANTAI PRAWEAN JEPARA (22ik129)

AZZAHRA, ALIA FATIMAH (2022) STUDI KANDUNGAN NITRAT (NO-) DAN FOSFAT 3(PO-3) PADA SEDIMEN TERHADAP KONDISI 4 PENUTUPAN LAMUN DI PERAIRAN PANTAI PRAWEAN JEPARA (22ik129). Undergraduate thesis, Universitas Diponegoro.

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Abstract

RINGKASAN
Alia Fatimah Azzahra. 26040118130128. Studi Kandungan Nitrat (NO3-) dan Fosfat (PO4-3) pada Sedimen terhadap Kondisi Penutupan Lamun di Perairan Pantai Prawean
Jepara (Munasik dan Ali Djunaedi)
Kondisi padang lamun bergantung pada lingkungan habitat yang didiami yakni pada
substrat. Lamun dapat menyerap nutrien dari substrat melalui sistem akar yang
berperan dalam faktor pertumbuhan lamun tersebut sehingga efisiensi daur nutrien
dalam sistemnya menjadi sangat penting untuk memelihara produktivitas primer
padang lamun. Nitrat dan fosfat berfungsi sebagai nutrien untuk membantu proses
fotosintesis. Selain masukan dari aktivitas daratan, nitrat dan fosfat berasal dari hasil
dekomposisi tumbuhan lamun yang telah mati. Oleh karena itu perlu adanya penelitian
mengenai kandungan nitrat dan fosfat di perairan pada tutupan lamun yang berbeda.
Penelitian ini bertujuan untuk mengetahui kandungan nutrien (nitrat dan fosfat) pada
sedimen serta mengetahui jenis dan tutupan lamun yang terdapat di perairan Pantai
Prawean Jepara. Penelitian ini menggunakan metode deskriptif eksploratif, sedangkan
metode penentuan lokasi menggunakan metode purposive sampling. Materi yang
digunakan dalam penelitian ini adalah sampel sedimen dan tutupan lamun. Penelitian
dilaksanakan pada bulan November 2021. Analisis sampel penelitian dilakukan di
Laboratorium Pengujian Teknik Lingkungan, Fakultas Teknik, Universitas
Diponegoro. Hasil rata-rata kandungan nitrat dan fosfat dalam sedimen masing-masig
yaitu 6,777 ppm tergolong tinggi dan 0,0183 ppm tergolong subur. Jenis lamun yang
ditemukan pada lokasi penelitian sebanyak 4 spesies yaitu Oceana serullata,
Cymodocea rotundata, Enhalus accoroides, dan Thalassia hemprichii dengan rata-rata
tutupan lamun sebesar 41,41% yang tergolong sedang. Analisis regresi korelasi
menunjukan hubungan yang sedang positif pada nitrat yaitu r = 0,34 dan lemah negatif
pada fosfat yaitu r = -0,1. Besarnya pengaruh nitrat dan fosfat pada sedimen terhadap
kondisi penutupan lamun menghasilkan nilai Determinansi Regresi (R) sebesar 0,4262
(42,62%) dan 0,0368 (3,68% ) yang sisanya dipengaruhi oleh faktor lingkungan lain.
Kata Kunci : Nutrien, Nitrat, Fosfat, Sedimen, Tutupan Lamun

SUMMARY
Alia Fatimah Azzahra. 26040118130128. Study of Nitrate (NO-) and Phosphate (PO-3) in Sediment on Seagrass Covering Conditions in Prawean Beach Jepara (Munasik
and Ali Djunaedi)
The condition of seagrass beds is dependent on the habitat environment inhabited,
namely on the substrate. Seagrass can absorb nutrients from the substrate through
the root system which plays a role in the growth factors of the seagrass so that the
efficiency of the nutrient cycle in the system is very important to maintain the primary
productivity of seagrass beds. Nitrates and phosphates function as nutrients to help
the process of photosynthesis. In addition to input from land activities, nitrate and
phosphate are derived from the decomposition of dead seagrass plants. Therefore,
there is a need for research on the content of nitrate and phosphate in waters at
different seagrass covers. This study aims to determine the nutrient content (nitrate
and phosphate) in the sediment and to determine the type and cover of seagrass in the
waters of Prawean Beach, Jepara. This study uses an exploratory descriptive method,
while the method of determining the location uses a purposive sampling method. The
materials used in this study were sediment samples and seagrass cover. The research
was carried out in November 2021. Analysis of the research sample was carried out
at the Environmental Engineering Testing Laboratory, Faculty of Engineering,
Diponegoro University. The average results of the nitrate and phosphate content in
the sediment were 6.777 ppm which was high and 0.0183 ppm was classified as
fertile. There were 4 species of seagrass found at the study site, namely Oceana
serullata, Cymodocea rotundata, Enhalus accoroides, and Thalassia hemprichii with
an average seagrass cover of 41.41% which was classified as moderate. Correlation
regression analysis showed that the relationship was positive for nitrate, namely r = 0.34 and weakly negative for phosphate, namely r = -0.1. The magnitude of the
influence of nitrate and phosphate on sediments on seagrass cover conditions
resulted in a Regression Determination (R) value of 0.4262 (42.62%) and 0.0368
(3.68% ), the rest of which was influenced by other environmental factors.
Keywords : Nutriens, Nitrate, Phosphate, Sediment, Seagrass Cover

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Nutrien, Nitrat, Fosfat, Sedimen, Tutupan Lamun, Nutriens, Nitrate, Phosphate, Sediment, Seagrass Cover
Subjects: Fisheries And Marine Sciences
Divisions: Faculty of Fisheries and Marine Sciences > Department of Marine Science
Depositing User: pancasila wati
Date Deposited: 10 Jan 2023 07:05
Last Modified: 26 May 2023 01:50
URI: https://eprints2.undip.ac.id/id/eprint/11093

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