Potensi Padang Lamun (Thalassia hemprichii) Sebagai Penyimpan dan Penyerap Karbon di Pantai Krakal, Gunungkidul, Yogyakarta

Padang lamun merupakan ekosistem pesisir yang mampu menyimpan dan menyerap karbon melalui proses fotosintesis yang disimpan dalam bentuk biomassa dan disimpan di akar, rhizome dan daun sehingga dapat mengurangi gas CO2 di udara. Ekosistem ini belum banyak diperhatikan fungsinya dibandingkan dengan ekosistem darat. Penelitian ini bertujuan mengetahui kerapatan, tutupan lamun dan serapan karbon dalam biomassa berupa jaringan atas substrat dan bawah substrat. Penelitian dilakukan pada bulan November 2018 di Pantai Krakal - Yogyakarta. Identifikasi jenis lamun dengan buku panduan seagrasswatch, kerapatan dan tutupan dengan metode line transect quadrant. Analisis kandungan karbon menggunakan metode pengabuan. Hasil penelitian menunjukkan lokasi ini memiliki biomassa di bagian atas 7,36 – 9,92 gbk/m2 dan bagian bawah 39,36 – 95,68 gbk/m2. Kedua bagian ini mampu menyimpan dan menyerap karbon rata-rata sebesar 30,42 ± 13,85 gC/m2 dan 0,2 ± 0,06 gC/d/m2. Hasil penelitian menunjukkan padang lamun di lokasi ini mampu menyimpan dan menyerap karbon meskipun dalam jumlah yang kecil. Seagrass beds are coastal ecosystems capable of absorbing and storing carbon through photosynthesis and stored of roots, rhizomes and leaves that it can reduce CO2 gas in the air. The function of this ecosystem has not been given much attention compared to the terrestrial ecosystem. The research was studied to determine density, cover of seagrass and carbon uptake in biomass of the upper and lower substrate. The research was carried in November 2018 at Krakal Beach - Yogyakarta. Identification of the type seagrass was carried by seagrasswatch manual, the density and cover was carried by the line transect quadrant method. The carbon content was analysis by the ashing method. The results was showed that this location has a biomass at the top of 7.36 - 9.92 gbk/m2 and the bottom of 39.36 - 95.68 gbk/m2. Both of these parts are able to store and absorb carbon are average of 30.42 ± 13.85 gC/m2 and 0.2 ± 0.06 gC/d/m2. The results showed that the seagrass beds on this beach were able to store and absorb of carbon with small amounts.

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STRUKTUR KOMUNITAS LAMUN DI MALANG RAPAT, BINTAN

JURNAL ENGGANO ◽

10.31186/jenggano.4.2.148-159 ◽

2019 ◽

Vol 4 (2) ◽

pp. 148-159

Author(s):

Wahyu Adi ◽

Aditya Hikmat Nugraha ◽

Yehiel Hendry Dasmasela ◽

Agus Ramli ◽

Calvyn Fredrik Aldus Sondak ◽

...

Keyword(s):

Spatial Distribution ◽

Line Transect ◽

Percent Cover ◽

Seagrass Beds ◽

Seagrass Species ◽

Substrate Type ◽

Thalassia Hemprichii ◽

Enhalus Acoroides ◽

Present Information ◽

Seagrass Cover

Padang lamun menyediakan banyak manfaat. Diperlukan penilaian tutupan lamun dan distribusi spasial spesies lamun, untuk memastikan manfaat dari padang lamun tetap ada. Penelitian ini dilakukan dengan metode kuadran disepanjang line transect, dan analisis data dilakukan untuk dapat menyajikan informasi tentang titik koordinat transek garis, persen tutupan lamun, persen tutupan spesies lamun, jenis substrat (pasir, lumpur dan pecahan karang), jumlah spesies Enhallus acoroides (tegakan/m2) dan distribusi spasial spesies lamun. Hasil penelitian menunjukkan kondisi padang lamun di wilayah studi sebagai kategori tutupan padat. Spesies lamun Thalassia hemprichii (Th) dan Enhalus acoroides (Ea) adalah spesies dominan dan menyebar ke seluruh wilayah penelitian.COMMUNITY STRUCTURE OF SEAGRASS IN MALANG RAPAT, BINTAN. Seagrass beds provide many benefits. Assessment of seagrass cover and spatial distribution of seagrass species is needed, to ensure the benefits of seagrass beds remain. The study was conducted using the quadratic method on the line transect, and the analysis was carried out to be able to present information about line transect coordinate points, percent cover of seagrass, percent cover of seagrass species, substrate type (sand, mud and rubble), number of species of Enhallus acoroides (shoot/m2) and spatial distribution of seagrass species. The results showed the condition of seagrass beds in the study area as a category of solid cover. Seagrass species Thalassia hemprichii (Th) and Enhalus acoroides (Ea) are dominant species and spread throughout the study area.

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Kestabilan Habitat Lamun Ditinjau Dari Komposisi dan Kepadatan Jenis

Jurnal Natural ◽

10.30862/jn.v8i1.333 ◽

2012 ◽

Vol 8 (1) ◽

Author(s):

Paskalina Th. Lefaan

Keyword(s):

Line Transect ◽

Seagrass Habitat ◽

Pioneer Species ◽

Thalassia Hemprichii ◽

Climax Species ◽

Halophila Ovalis ◽

Cymodocea Rotundata ◽

Syringodium Isoetifolium ◽

Cymodocea Serrulata ◽

Stable Habitat

<em>Seagrasses habitats have both physical and ecological functions that support adjacent waters qualities and its dwelling organisms. There are varies of pressure on seagrass environmental, especially due to people activities that could decrease its function and habitat stabilities. The study aimed to determine about seagrass habitat stabilities from its species composition and/or densities. Line transect-plots and exploration methods were used in five locations of Manokwari coastal waters, that were, Andai, Rendani, Wosi, Briosi, and Tanjung Manggewa. There are five pioneer species (Cymodocea rotundata, Halodule pinifolia, H. uninervis, Syringodium isoetifolium, Halophila ovalis) and 3 climax species (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii). The pioneer only found in Andai and Wosi, however both pioneer and climax encountered in three other locations. In Rendani and Tanjung Manggewa higher density of climax species (T. hemprichii) were 617.7 and 828.0 stands m-2, respectively, although in Briosi the higher pioneer (C. rotundata) of 570.7 stands m-2. These conditions showed that seagrass habitat in Rendani and Tanjung Manggewa are more stable compared to Briosi, as well as Andai and Wosi. It concluded that pioneer species found in newly formed habitat or disturbed, on the other hand, climax in more stable habitat.</em>

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Biomasa dan Simpanan Karbon pada Ekosistem Lamun di Perairan Batulawang dan Pulau Sintok Taman Nasional Karimunjawa, Jepara

Journal of Marine Research ◽

10.14710/jmr.v10i3.31692 ◽

2021 ◽

Vol 10 (3) ◽

pp. 413-420

Author(s):

Annisa Rhamadany ◽

Chrisna Adhi Suryono ◽

Delianis Pringgenies

Keyword(s):

Carbon Content ◽

Carbon Storage ◽

Thalassia Hemprichii ◽

Enhalus Acoroides ◽

Halophila Ovalis ◽

A Value ◽

Seagrass Biomass ◽

Seagrass Ecosystems ◽

Cymodocea Rotundata ◽

Thalassodendron Ciliatum

Ekosistem lamun memiliki fungsi ekologi dan ekonomi yang tinggi. Peran ekosistem lamun dalam penyimpanan karbon akan tetapi masih belum menjadi sorotan. Tujuan dari penelitian ini yaitu untuk mengetahui nilai biomassa dan estimasi simpanan karbon pada ekosistem lamun di Perairan Batulawang, Pulau Kemujan serta Pulau Sintok, Taman Nasional Karimunjawa. Penelitian ini dilaksanakan pada 7 – 14 Noevmber 2019 di Perairan Batulawang dan Pulau Sintok, Taman Nasional Karimunjawa. Metode penelitian di lapangan menggunakan metode SeagrassWatch, sementara nilai biomassa dan nilai estimasi simpanan karbon dihitung menggunakan metode Metode Loss of Ignition (LOI) di laboratorium. Data yang diperoleh berupa pengukuran berat kering untuk menghitung biomassa dan analisa kandungan karbon pada lamun dan sedimen. Hasil penelitian didapatkan empat jenis lamun di Perairan Batulawang yaitu Enhalus acoroides, Thalassia hemprichii, Cymodocea serrulata, dan Thalassodendron ciliatum sedangkan di Pulau Sintok terdapat tiga jenis lamun yang ditemukan yaitu Thalassia hemprichii, Cymodocea rotundata, dan Halophila ovalis. Nilai total biomassa lamun terbesar pada Perairan Batulawang yaitu Enhalus acoroides dengan nilai 849,75 gbk/m2 dan nilai total biomassa lamun terkecil Thalassodendron ciliatum dengan nilai 29 gbk/m2. Nilai total biomassa lamun terbesar pada Pulau Sintok yaitu Cymodocea rotundata dengan nilai 177,75 gbk/m2dan nilai total biomassa lamun terkecil Halophila ovalis dengan nilai 4,75 gbk/m2. Hasil pengukuran karbon lamun pada Perairan Batulawang yaitu 12,97 – 359,87 gC/m2 dan 258,20 – 541,51 gC/m2 pada sedimennya. Hasil pengukuran karbon pada lamun di Pulau Sintok yaitu 2,35 – 85,80 gC/m2 dan 204,92 – 765,92 gC/m2 pada sedimen. Kandungan karbon paling besar terdapat pada bagian bawah substrat (below ground). Kandungan karbon pada bagian bawah substrat tidak terganggu oleh faktor lingkungan (gelombang, arus, dan ulah manusia) sehingga terakumulasi baik. Seagrass ecosystems have high ecological and economic functions. The role of seagrass ecosystems in carbon storage, however, has not yet been highlighted. The purpose of this study was to determine the value of biomass and estimated carbon storage in seagrass ecosystems in Batulawang waters, Kemujan Island and Sintok Island, Karimunjawa National Park. This research was conducted on 7 − 14 November 2019 in Batulawang waters and Sintok Island, Karimunjawa National Park. The research method in the field uses the SeagrassWatch method, while the biomass value and the estimated value of carbon storage are calculated using the Loss of Ignition (LOI) method in the laboratory. The data obtained were measurements of dry weight to calculate biomass and analysis of carbon content in seagrass and sediments. The result shows that there are four species of seagrass in Batulawang Waters, they are Enhalus acoroides, Thalassia hemprichii, Cymodocea serrulata, and Thalassodendron cliatum meanwhile in Sintok Island there are three species, they are, Thalassia hemprichii, Cymodocea rotundata, and Halophila ovalis. The measurement of carbon is done by using Loss on Ignition Method. The highest total seagrass biomass in Batulawang waters is Enhalus acoroides with a value of 849.75 gbk/m2 and the lowest total seagrass biomass is Thalassodendron ciliatum with a value of 29 gbk/m2. The highest total seagrass biomass on Sintok Island is Cymodocea rotundata with a value of 177.75 gbk/m2 and the lowest total seagrass biomass is Halophila ovalis with a value of 4.75 gbk/m2. The results of measurements of seagrass carbon in Batulawang waters are 12,97 – 359,87 gC/m2 and 258,20 – 541,51 gC/m2 on the sediments. The result of seagrass carbon measurement in Sintok Island is 2,35 – 85,80 gC/m2 and 204,92 – 765,92 gC/m2 on the sediments. The largest carbon content is at the bottom of the substrate (below ground). The carbon content at the bottom of the substrate is not disturbed by environmental factors (waves, currents, and human activities) so that it accumulates well.

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STRUKTUR KOMUNITAS IKAN PADA EKOSISTEM LAMUN DI PANTAI PUDING KABUPATEN BANGKA SELATAN

Akuatik Jurnal Sumberdaya Perairan ◽

10.33019/akuatik.v12i2.699 ◽

2018 ◽

Vol 12 (2) ◽

pp. 35-44

Author(s):

Sania Prisilia ◽

Wahyu Adi ◽

Arief Febrianto

Keyword(s):

Strong Relationship ◽

Data Retrieval ◽

Line Transect ◽

Thalassia Hemprichii ◽

Seagrass Meadows ◽

Gill Net ◽

Seagrass Ecosystems ◽

Halodule Uninervis ◽

Relationship Of ◽

Seagrass Density

Seagrass beds have a variety of roles in fish life, which can be used as nurseries, as a place for feeding ground, and for areas to seek protection. This study aims to analyze the structure of fish communities and seagrass communities and analyze the relationship of fish abundance with seagrass ecosystems. This research was conducted in March 2018 on the beach of Puding Air Banten II, Pasir Putih Village, Tukak Sadai District, Bangka Selatan Regency. Line transect method for seagrass data collection and fish data retrieval using fixed gill nets (gill net). The results of the study found that the total number of individual fish as much as 409 ind / m2 consisted of 25 species. The highest abundance of fish found in Station I with Ambassis interrupta species as many as 241 ind / m2. There were six types of seagrass found on the coast of Puding, namely Enhalus acoroides, Thalassia hemprichii, Halodule uninervis, Halophila spinulosa, Halophila decipiens and Cymodocea serrulata. The highest seagrass density was found at Station I with the seagrass Halodule uninervis species of 2541 ind / m2. Correlation coefficient analysis shows that the abundance of fish with seagrass density has a significant value of 0.956 which is classified as having a very strong relationship. Fish have higher abundance with seagrass meadows which vegetate with mangroves

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Cadangan Karbon pada Ekosistem Padang Lamun di Siantan Tengah Taman Wisata Perairan Kepulauan Anambas

Jurnal Kelautan Tropis ◽

10.14710/jkt.v24i1.9348 ◽

2020 ◽

Vol 24 (1) ◽

pp. 45-54

Author(s):

Muhammad Al Rizky Ratno Budiarto ◽

Johan Iskandar ◽

Tri Dewi Kusumaningrum Pribadi

Keyword(s):

Carbon Stock ◽

Carbon Sink ◽

Gravimetric Method ◽

Total Carbon ◽

Seagrass Beds ◽

Thalassia Hemprichii ◽

Enhalus Acoroides ◽

Value Range ◽

Seagrass Biomass ◽

Cymodocea Rotundata

Secara global, ekosistem lamun dianggap sebagai penyerap karbon sehingga dapat berkontribusi terhadap mitigasi perubahan iklim. Penelitian bertujuan untuk mengetahui komposisi jenis, biomassa dan cadangan karbon pada komunitas padang lamun di perairan Siantan Tengah Taman Wisata Perairan (TWP) Kepulauan Anambas. Penelitian dilaksanakan pada bulan Agustus 2019 s.d Januari 2020. Uji kandungan karbon dilakukan dengan metode Welkley and Black sedangkan untuk mendapatkan biomassa menggunakan metode gravimetrik. Hasil penelitian menunjukkan bahwa terdapat tiga jenis lamun, yaitu Enhalus acoroides, Thalassia hemprichii, dan Cymodocea rotundata. Nilai biomassa lamun berkisar antara 171,89 – 275,68 gbk/m2 dan nilai cadangan karbon berada pada kisaran 51,89 – 80,66 gC/m2. Padang lamun di Siantan Tengah memiliki luas 130,45 ha, sehingga total Cadangan karbon pada ekosistem padang lamun di perairan Siantan Tengah diperkirakan 95,88 ton C. Penelitian ini membuktikan adanya kandungan karbon pada biomassa lamun sehingga dapat disimpulkan bahwa padang lamun berperan sebagai penyerap karbon (carbon sink). Globally, seagrass ecosystems are considered as carbon sink so that it can contribute to climate change mitigation. This research aims to determine the species composition, biomass, and carbon stock in seagrass communities in Siantan Tengah Marine Tourism Park of Anambas Islands. The research was conducted in Agustus 2019 – January 2020. The carbon content test was carried out by the Walkley and Black method while to obtain biomass using the gravimetric method. The result od study showed that there are three species of seagrasses, namely Enhalus acoroides, Thalassia hemprichii, and Cymodocea rotundata. Seagrass biomass value range 171,89 – 275,68 gbk/m2 and seagrass carbon stock value range 51,89 – 80,66 gC/m2. The area of seagrass beds in Central Siantan is 130,45 ha so that the total carbon stock estimated reach 95,88 tons C. This research proves the presence of carbon in the biomass of seagrass beds, so it can be concluded that seagrass beds act as carbon sinks.

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STRUKTUR KOMUNITAS DAN ASOSIASI LAMUN (Seagrass) DI PERAIRAN PANTAI RUA PULAU TERNATE PROVINSI MALUKU UTARA

JURNAL BIOLOGI TROPIS ◽

10.29303/jbt.v13i1.73 ◽

2013 ◽

Vol 13 (1) ◽

Author(s):

Riyadi Subur

Keyword(s):

Coastal Waters ◽

Coastal Region ◽

Positive Association ◽

Distribution Patterns ◽

Research Area ◽

Negative Association ◽

Line Transect ◽

Thalassia Hemprichii ◽

Marine Life ◽

Cymodocea Rotundata

AbstrakLamun (Seagrass) merupakan salah satu ekosistem penting diwilayah pesisir yangberperan penting baik secara ekologis dan ekonomis. Keberadaan lamun mendukungkehidupan berbagai jenis biota laut. Penelitian ini bertujuan mengidentifikasi jenis-jenislamun yang berada di perairan pantai Rua, Mengetahui kepadatan, pola sebaran,keanekaragaman jenis, dan dominansi serta asosiasi antara spesies. Penelitian ini dilakukandengan metode garis transek dan kuadrat. Hasil penelitian menunjukkan bahwa terdapat 4jenis lamun di perairan pantai Rua yang terdiri dari Cymodocea rotundata, Enhalusacoroides, Halodule pinifolia dan Thalassia hemprichii. T. hemprichii adalah jenis dengankepadatan tertinggi di perairan Rua yaitu 16,70 ind/m2, serta E. acoroides, memilikikepadatan terendah yakni 5,77 ind/m2. Jenis lamun yang ditemukan di lokasi penelitianseluruhnya memiliki pola sebaran mengelompok dengan keanekaragaman yangdikategorikan rendah yaitu sebesar 1,32, serta indeks dominasi sebesar 0,27. Tipe asosiasilamun di lokasi penelitian yaitu asosiasi positif (+), serta asosiasi negatif (-).Kata Kunci. Struktur Komunitas, Asosiasi, lamun.AbstractSeagrass is a important ecosystems coastal region that is important both ecologically andeconomically . The seagrass supports of various marine life. This study to propose identify thespecies of seagrasses in coastal waters in Rua, Knowing the density, distribution pattern,species diversity, and dominance as well as associations between species. This study wasconducted using line transect and kuadrats. The results showed that there are 4 species ofseagrass in Rua consisting of Cymodocea rotundata , Enhalus acoroides , pinifolia Haloduleand Thalassia hemprichii . T. hemprichii is highest density (16.70 ind/m2), and E. acoroides ,which has the lowest density (5.77 ind/m2). Species seagrass found in the research area allhave clumped distribution patterns are categorized with diversity low at 1.32 , and dominanceindex at 0.27. Type association of seagrass in the location studies is positive association ( + )and negative association ( - ).Key Words:community structur, association, seagrass

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Climate and atmospheric drivers of historical terrestrial carbon uptake in the province of British Columbia, Canada

Biogeosciences ◽

10.5194/bg-11-635-2014 ◽

2014 ◽

Vol 11 (3) ◽

pp. 635-649 ◽

Cited By ~ 17

Author(s):

Y. Peng ◽

V. K. Arora ◽

W. A. Kurz ◽

R. A. Hember ◽

B. J. Hawkins ◽

...

Keyword(s):

British Columbia ◽

Terrestrial Ecosystem ◽

Co2 Concentration ◽

Ecosystem Model ◽

Carbon Uptake ◽

Stem Wood ◽

Terrestrial Ecosystem Model ◽

Changing Climate ◽

Model Response ◽

Two Factors

Abstract. The impacts of climate change and increasing atmospheric CO2 concentration on the terrestrial uptake of carbon dioxide since 1860 in the Canadian province of British Columbia are estimated using the process-based Canadian Terrestrial Ecosystem Model (CTEM). Model simulations show that these two factors yield an enhanced carbon uptake of around 44 gC m−2 yr−1 (or equivalently 63 gC m−2 yr−1 over the province's forested area), during the 1980s and 1990s, and continuing into the 2000s. About three-quarters of the simulated sink enhancement in our study compared to pre-industrial conditions is attributed to changing climate, and the rest is attributed to increase in CO2 concentration. The model response to changing climate and increasing CO2 is corroborated by comparing simulated stem wood growth rates with ground-based measurements from inventory plots in coastal British Columbia. The simulated sink is not an estimate of the net carbon balance because the effects of harvesting, insect disturbances and land-use change are not considered.

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Keanekaragaman Lamun di Pantai Tongkaina Kecamatan Bunaken Kota Manado

Jurnal MIPA ◽

10.35799/jm.3.1.2014.3895 ◽

2014 ◽

Vol 3 (1) ◽

pp. 1

Author(s):

Klion Ngongira ◽

Marnix L. D. Langoy ◽

Deidy Yulius Katili ◽

Pience V. Maabuat

Keyword(s):

Diversity Index ◽

Wide Distribution ◽

Line Transect ◽

Thalassia Hemprichii ◽

Purposive Sampling ◽

Enhalus Acoroides ◽

Halophila Ovalis ◽

Sea Grass ◽

Syringodium Isoetifolium ◽

Cymodocea Serrulata

Lamun adalah tumbuhan berbunga yang dapat tumbuh dengan baik pada lingkungan laut dangkal. Penelitian ini dilaksanakan di pantai Tongkaina dengan menggunakan metode observasi lapangan pada purposive sampling dengan garis transek kuadrat. Analisis data meliputi perhitungan dengan rumus Krebs dan Fachrul, identifikasi jenis lamun dan penentuan indeks keanekaragaman menggunakan Shannon Wiener. Berdasarkan hasil penelitian terdapat tujuh jenis lamun yang ditemukan yaitu Enhalus acoroides, Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata, Cymodocea serrulata, Holodule pinifolia dan Syringodium isoetifolium. Lamun Enhalus acoroides dan Thalassia hemprichii memiliki penyebaran terluas, karena ditemukan di seluruh transek pada lokasi penelitian. Jenis yang jarang dijumpai adalah Halophila ovalis dan Holodule pinifolia. Jumlah individu yang ditemukan adalah 2993 individu. Nilai indeks keanekaragaman di pesisir Pantai Molas memperlihatkan bahwa di wilayah ini keanekaragaman jenis lamun sedang bila dibandingkan dengan 13 lokasi lainnya di Indonesia.Sea grasses are flowering plants that can grow well in shallow marine environments. This research was conducted in Tongkaina Beach using field observation, with purposive sampling using line transect squares. Data analysis was performed using the formula of Krebs and Fachrul. Identification of sea grass and determination of diversity index is done using Shannon Wiener. Results obtained in this research showed that there are seven types of sea grasses, namely Enhalus acaroides, Thalassia hemprichii, Halophila ovalis, Cymodecea rotundata, Cymodocea serrulata, Holodule pinifolia, and Syringodium isoetifolium. Enhalus acoroides and Thalassia hemprichii have wide distribution because they can be found in all transect line at research site. Species that are rarely found are Halophila ovalis and Holodule pinifolia. Number of individual found was 2993. Value of diversity index at Tongkaina Beach showed that this area has moderate sea grass diversity compared to other 13 locations in Indonesia.

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KAJIAN KOMUNITAS EKOSISTEM LAMUN DI SEMENANJUNG TARABITAN KECAMATAN LIKUPANG BARAT KABUPATEN MINAHASA UTARA

JURNAL PESISIR DAN LAUT TROPIS ◽

10.35800/jplt.9.2.2021.34836 ◽

2021 ◽

Vol 9 (2) ◽

pp. 24

Author(s):

Risandi D Sitaba ◽

Carolus P Paruntu ◽

Billy Theodorus Wagey

Keyword(s):

Species Composition ◽

Percent Cover ◽

Seagrass Beds ◽

Seagrass Species ◽

Thalassia Hemprichii ◽

Enhalus Acoroides ◽

Halophila Ovalis ◽

Halodule Uninervis ◽

Cymodocea Rotundata ◽

Syringodium Isoetifolium

This research was conducted in the waters of Tarabitan Peninsula, West Likupang North Minahasa using quadants transect method. The purpose of this study was to determine the community structure of seagrass found in that waters as initial information for sustainable management seagrass ecosystem . Field observation was conducted to identify the seagrass species, number of individuals/shoots, percent cover for each type of seagrass in those plotting quadrants. The result of this study documented 6 types of seagrass namely, Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halophila ovalis and Halodule uninervis. The species composition and distribution of seagrass were varied and was dominated by Thalassia hemprichii was the most dominant seagrass species with a relative density of 55.55%, a relative frequency of 33.67%, 39.92% relative cover, an important value index of 129.03%, a diversity index of 1.30 belonging to this condition, moderate, the uniformity index of 0.72 is classified as high and the dominance index of 0.2 is classified as low. Based on Minister of Environment Decree Republic Indonesia No. 200 of 2004 concerning the status of seagrass beds, the condition of the seagrass beds in the waters of Tarabitan Village is classified as rich / healthy with a cover value of ≥ 60. Keywords : Seagrass Community, Species Composition, distribution, Tarabitan Peninsula Penelitian ini dilakukan di perairan Semenanjung Tarabitan Likupang Barat Minahasa Utara dengan menggunakan metode transek kuadran. Tujuan penelitian ini adalah untuk mengetahui struktur komunitas lamun yang terdapat di perairan tersebut sebagai informasi awal untuk pengelolaan lamun secara berkelanjutan. Pengamatan lapangan dilakukan untuk mengidentifikasi jenis lamun, jumlah individu/tegakan, persentase tutupan tiap jenis lamun pada tiap kuadran. Hasil penelitian ini mendokumentasikan 6 jenis lamun yaitu Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halophila ovalis dan Halodule uninervis. Komposisi jenis dan sebaran lamun bervariasi dan didominasi oleh jenis lamun Thalassia hemprichii merupakan jenis lamun yang paling dominan dengan kerapatan relatif 55,55%, frekuensi relatif 33,67%, tutupan relatif 39,92%, indeks nilai penting 129,03%, indeks keanekaragaman 1,30 tergolong dalam kondisi sedang, indeks keseragaman 0,72 tergolong tinggi dan indeks dominansi 0,2 tergolong rendah. Berdasarkan Keputusan Menteri Lingkungan Hidup Nomor 200 Tahun 2004, kondisi padang lamun di perairan Desa Tarabitan tergolong kaya / sehat dengan nilai tutupan ≥ 60.Kata Kunci: Komunitas Lamun, Komposisi Jenis, Distribusi, Semenanjung Tarabitan

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Simpanan Karbon pada Ekosistem Padang Lamun di Perairan Jepara

Journal of Marine Research ◽

10.14710/jmr.v9i2.25284 ◽

2020 ◽

Vol 9 (2) ◽

pp. 99-108

Author(s):

Raka Pramulo Sophianto ◽

Hadi Endrawati ◽

Retno Hartati

Keyword(s):

Community Structure ◽

Carbon Content ◽

Total Carbon ◽

Seagrass Beds ◽

Total Carbon Content ◽

Seagrass Community ◽

Seagrass Biomass ◽

The Difference ◽

Biology Laboratory ◽

Descriptive Method

Padang lamun merupakan ekosistem yang kompleks dan produktif di ekosistem laut dan pesisir serta salah satu peran utama lamun adalah sebagai penyimpan karbon dengan karakteristik uniknya. Penelitian ini bertujuan untuk mengetahui jenis-jenis lamun, mengetahui struktur komunitas lamun, nilai biomassa dan nilai karbon lamun. Penelitian ini dilakukan pada bulan Oktober dan November 2017 di Teluk Awur dan Pantai Bendengan Jepara. Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Pengambilan sampel dilakukan pada dua tempat masing-masing lima stasiun. Sampel yang diambil adalah lamun, sedimen dan air laut yang ditemukan di lokasi penelitian yang kemudian di identifikasi serta dianalisis di Laboratorium Biologi, Departemen Ilmu Kelautan, dan analisis pengabuan lamun dilakukan pada di Laboratorium Geologi, Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Hasil penelitian ini menunjukkan nilai total biomassa lamun yang didapat di kedua lokasi dari sampling pertama yaitu 982,77 gbk/m2 dan sampling kedua yaitu 923,91 gbk/m2. Total kandungan karbon pada sampling pertama berkisar antara 511,76 – 3662,26 gC/m2 dan total karbon pada sampling kedua berkisar antara 141,48 – 3344,2 gC/m2. Perbedaan hasil yang di dapat menunjukkan bahwa perbedaan iklim dapat berpengaruh terhadap hasil yang didapatkan. Seagrass beds are complex and productive ecosystems in marine and coastal ecosystems and one of the main roles of seagrasses is storing carbon with its unique characteristics. This study aims to determine the types of seagrasses, find out the seagrass community structure, biomass values and seagrass carbon values. This research was conducted in October and November 2017 in Teluk Awur and Bendengan Jepara Beach. The method used in this research is descriptive method. Sampling was carried out at two places each of five stations. Samples taken were seagrass, sediments and seawater found at the study site which were then identified and analyzed in the Biology Laboratory, Department of Marine Sciences, and analysis of desertion carried out at the Geology Laboratory, Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Diponegoro University. The results of this study indicate the total value of seagrass biomass obtained in both locations from the first test was 982.77 gbk/m2 and the second test was 923.91 gbk/m2. The total carbon content in the first sampling ranged from 511.76 - 3662.26 gC/m2 and the total carbon in the second sampling ranged from 141.48-3344.2 gC/m2. The difference in results can show that climate differences can affect the results obtained.

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