Nirwani Soenardjo
Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro

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TINGKAT HERBIVORI DAUN MANGROVE RHIZOPHORA STYLOSA DAN AVICENNIA MARINA DI DESA PASAR BANGGI, REMBANG, JAWA TENGAH Fadilla, Winda Ariesta Nur; Soenardjo, Nirwani; Setyati, Wilis Ari
Buletin Oseanografi Marina Vol 8, No 2 (2019): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.734 KB) | DOI: 10.14710/buloma.v0i0.24965

Abstract

Hutan mangrove memiliki fungsi ekologi sebagai daerah pemijahan, daerah asuhan dan daerah mencari makan. Fauna yang tinggal di hutan mangrove akan menciptakan simbiosis antara flora dan fauna mangrove, misalnya aktivitas herbivori daun. Herbivori daun mangrove dipengaruhi oleh beberapa faktor seperti spesies tanaman, tinggi tanaman dan umur daun. Penelitian ini bertujuan untuk mengetahui tingkat herbivori daun mangrove Rhizophora stylosa dan Avicennia marina berdasarkan tinggi tanaman dan umur daun pada ekosistem mangrove di Desa Pasar Banggi, Rembang, Jawa Tengah. Metode penelitian yang digunakan dalam penelitian ini adalah metode deskriptif. Metode pengambilan data yang digunakan adalah metode survei dan penentuan lokasi penelitian menggunakan metode purposive. Sampel daun diambil dari 2 spesies mangrove dominan pada ekosistem Desa Pasar Banggi yaitu Rhizophora stylosa dan Avicennia marina. Daun diambil dari 3 kategori tinggi tanaman yaitu <1 m, 1-< 3 m dan 3?5 m, masing-masing diambil 10 pohon sebagai ulangan. Daun diambil sebanyak 10 %, dipisahkan berdasarkan umur daun (muda dan tua) dan kondisi daun (utuh dan rusak). Sampel daun diolah menggunakan software ImageJ dan Measure Picture. Hasil penelitian menunjukkan rata-rata tingkat herbivori tertinggi pada daun muda Rhizophora stylosa pada tanaman dengan tinggi 3?5 m dan tertinggi pada daun tua Rhizophora stylosa pada tanaman dengan tinggi 1?< 3 m, sedangkan  rata-rata tingkat herbivori tertinggi pada daun muda Avicennia marina pada tanaman dengan tinggi 1?< 3 m dan tertinggi pada daun tua Avicennia marina pada tanaman dengan tinggi 1?< 3 m. Mangrove forests have ecological functions a spawning ground, nursery ground and feeding ground. Fauna living in mangrove forests will create a symbiosis between mangrove flora and fauna, for example herbivory leaf activity. Herbivory of mangrove leaves is influenced by several factors such as plant species, plant height and leaf age. This study aims to determine the herbivory level of mangrove Rhizophora stylosa and Avicennia marina leaves based on plant height and leaf age in the mangrove ecosystem in Pasar Banggi Village, Rembang, Central Java. The research method used in this study was descriptive. The data collection method used in this study is the survey method and the determination of the location of the study using a purposive method. Leaf samples were taken from 2 dominant mangrove species in the Pasar Banggi Village ecosystem, Rhizophora stylosa and Avicennia marina. The leaves are taken from 3 plant height categories, namely <1 m, 1-<3 m and 3-5 m, each of which is taken as 10 replicates. The leaves are taken as much as 10%, then separated according to the age of the leaves (young or old) and the condition of the leaves (whole or damaged). Leaf samples were processed using ImageJ and Measure Picture software. The results showed the highest average herbivory level in young leaves of Rhizophora stylosa at plant height 3-5 m (10.11%) and highest on old leaves of Rhizophora stylosa at plant height 1-<3 m (10.67%), while the highest average herbivory level in Avicennia marina young leaves at plant height 1-<3 m (12.54%) and the highest on the old leaves of Avicennia marina at plant height 1-<3 m (11.73%).
KARAKTERISASI BAKTERI YANG BERASOSIASI DENGAN PENYAKIT PINK-BLOTCHDI P. SAMBANGAN, KARIMUNJAWA Soenardjo, Nirwani
Buletin Oseanografi Marina Vol 2, No 1 (2013): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.057 KB) | DOI: 10.14710/buloma.v2i1.6928

Abstract

Sindrome penyakit blotch yang menyerang karang massive mengakibatkan kehancuran sistem ekologi terumbu karang. Penyebaran penyakit ini berjalan sangat cepat dibandingkan dengan laju pertumbuhan karang. Tujuan penelitian ini adalah mengisolasi dan mengidentifikasi bakteri yang berasosiasi dengan sindrom penyakit pink-blotch (PBS) pada karang. Pelaksanaan penelitian  meliputi sampling karang yang dilakukan dengan ScubaDiving pada kedalaman 3 dan 10 meter, identifikasi dan dokumentasi jenis karang yang terserang penyakit secara in situ dengan underwatercamera Nikonos, isolasi dan purifikasi bakteri yang berasosiasi dengan sindrome penyakit blotch, contagious coral experiments skala laboratoris,   postulat Koch?s experiment dilakukan di dalam laboratorium dan di lapangan dengan teknik syringe. Identifikasi bakteri yang berasosiasi dengan penyakit karang PBS secara mikrobiologis dilakukan untuk mengetahui genus agen penyebab penyakit. Hasil penelitian menunjukkan bahwa bakteri yang berasosiasi dengan sindrome penyakit pink-blotch adalah genus Erythrobacter sp.   Kata kunci: terumbu karang, pink-blotch, Erythrobacter sp
KAJIAN BIOEKOLOGI DAN STRATEGI PENGELOLAAN EKOSISTEM MANGROVE : STUDI KASUS DI TELUK AWUR JEPARA Pradana, Oky Yuripa; Soenardjo, Nirwani; Suryono, Suryono
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v2i1.2056

Abstract

Mangrove ecosystem have an important role in the environment. The ecological values of mangrove Teluk Awur is a place for feeding, nursery and spawning ground mangrove organism. This environment also produce detritus that support the existence of organic matter in the waters around. The purpose of this research was to study the condition of mangroves bioecology and socio-economic conditions for integrated stakeholders strategy and management of mangrove Teluk Awur Jepara. Method used is case study, explorative and descriptive. Data were analyzed using SWOT analysis by weighting or scoring. The result showed Teluk Awur mangrove ecosystem in the categorized into good criteria because of it?s density > 1500 ind/ha. There are 27 mangrove species and various fauna depend their lives on to of Teluk Awur mangrove ecosystems. Management strategies are recommended as the first priority is providing mangrove rehabilitation activities involving the public directly (score 4.125). Second, environmental education and sustainable use of mangrove resources to local communities (score 2.887). Third, rulemaking and standard operating procedure (SOP) specifically management of Teluk Awur mangrove ecosystems by Diponegoro University: Marine Station (score 2.601).
LOGAM PB PADA AVICENNIA MARINA FORSSK, 1844 (ANGIOSPERMS : ACANTHACEAE) DI LINGKUNGAN AIR, SEDIMEN, DI PESISIR TIMUR SEMARANG Testi, Ega Hagita; Soenardjo, Nirwani; Pramesti, Rini
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v8i2.25212

Abstract

Akar Avicennia marina merupakan bagian yang pertama terpapar logam berat timbal. Akar ini menyerap dan menyebarkan keseluruh bagian tanaman. Tujuan dari penelitian ini untuk mengkaji kandungan logam berat Pb dalam akar dan daun A. marina disekitar Kawasan Perairan Industri Terboyo, Semarang. Metode yang digunakan adalah metode deskriptif dan penentuan lokasi dengan metode purposive sampling. Pengambilan sampel meliputi air, sedimen, akar, dan daun mangrove di sepanjang aliran Sungai Sringin, Sungai Babon, dan Sungai Tenggang. Analisis kandungan logam berat di air dilakukan di Laboratorium Balai Lingkungan Hidup (BLH). Analisis kandungan logam berat di sedimen, akar, daun muda dan daun tua dilakukan di Laboratorium Balai Besar Teknologi Pencegahan Pencemaran Industri (BBTPPI) dengan menggunakan Atomic Absorbtion Spectrophotometry (AAS). Kandungan logam berat dalam air <0,00-0,01 mg/L, sedimen <0,03 - 6,23 mg/kg, akar 0,20-0,31 mg/kg, daun muda 0,10-0,13 mg/kg, dan daun tua 0,10-0,15 mg/kg. Hasil penelitian dapat disimpulkan bahwa kandungan logam berat di air diatas baku mutu (KepMen LH No. 51, 2004) sebesar 0,008 mg/L sedangkan sedimen dibawah baku mutu (National Oceanic and Atmospheric Administration, 1999) sebesar 30,24 ppm. ABSTRACT : The roots of Avicennia marina was a plant that can be accumulated by heavy metals. This  plant roots were first exposed to heavy metals, especially heavy metals Pb, was the root. The roots would absorb and spread in all parts of the plant This study was aimed to examine the heavy metal content of Pb in the roots and leaves of A. marina around Area of Terboyo Industrial Water, Semarang. The method used in this research was descriptive method and the location decision with  purposive sampling method. The sampling included were water, sediments, roots, mangrove leaves along Sringin River, Babon River, and Tenggang River. The analysis of heavy metal content in the water was performed in the Laboratory of Environment (BLH). The analysis of heavy metal content in the sediment, the roots, young leaves and old leaves were conducted in Laboratory Technology Center Industrial Pollution Prevention (BBTPPI) using Atomic Absorption Spectrophotometry (AAS). Heavy Metal contained in water < 0,00 to  0,01 mg/L, sediment < 0,030 to 6,23 mg/kg, the roots of A. marina were 0,20 to 0,31 mg/kg, the young leaves were 0,10 to 0,13 mg/kg, and the old leaves 0,10 to 0,15 mg/kg. the result of this research can be concluded that the heavy metal content  in water were high quality standard (KepMen LH No. 51, 2004) of 0,008 mg/L and in sediments below was
KOMPOSISI DAN KELIMPAHAN GASTROPODA PADA EKOSISTEM MANGROVE DI DESA TIREMAN, KABUPATEN REMBANG, JAWA TENGAH Laraswati, Yuli; Soenardjo, Nirwani; Setyati, Wilis Ari
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v9i1.26104

Abstract

Ekosistem mangrove mermiliki manfaat sebagai tempat mencari makan serta habitat bagi organisme, mislanya gastropoda. Gastropoda di ekosistem mangrove berperan dalam proses dekomposisi yaitu dengan mencacah daun menjadi lebih kecil, yang kemudian dilanjutkan oleh mikroorganisme. Kepadatan  gastropoda dipengaruhi oleh kegiatan yang terdapat pada ekosistem dan dapat memberikan efek pada kelangsungan hidup gastropoda.Tujuan penelitian adalah untuk mengetahui struktur komunitas gastropoda pada ekosistem mangrove Desa Tireman Kecamatan Rembang, Jawa Tengah. Metode penentuan lokasi sampling menggunakan metode purposive sampling pada 3 lokasi dengan kerapatan mangrove yang berbeda. Pengambilan sampel gastropoda dilakukan dalam transek 5 x 5m dan sampel yang didapat kemudan disortir, diawetkan dan diidentifikasi. Hasil penelitian ditemukan 9 spesies gastropoda termasuk kedalam 3 famili yaitu Casidula nucleus, C. aurisfelis (Ellobiidae), Littoraria scabra, L. carinifera, L. Melanostama (Littorinidae), Cerithidea quadrata, C. cingulata, C. alata, Telescopium telescopium (Potamididae). Spesies yang paling sering ditemukan adalah Cassidula aurisfelis dan Cassidula nucleus. Nilai rata-rata kelimpahan berkisar antara 6,28 - 15,72 Ind/m2. Nilai indeks keanekaragaman termasuk ke dalam kategori rendah hingga sedang. Nilai rata-rata indeks keseragaman termasuk kedalam kategori rendah (0.15-0.27). Nilai rata-rata indeks dominansi menunjukkan tidak adanya dominansi dari spesies tertentu. Pola sebaran menunjukkan pola sebaran mengelompok dan acak. Nilai kesamaan komunitas gastropoda tergolong dalam kategori tinggi. Frekuensi kehadiran gastropoda kategori jarang hingga sangat sering.  The mangrove ecosystem has benefits as a place to eat and habitat for the organism, the gastropod's missile. Gastropods in the mangrove ecosystem play a role in the decomposition process, with the smaller leaves, which are then followed by microorganisms. The density of gastropods is influenced by activities found in ecosystems and can provide an effect on the viability of gastropods. The purpose of research is to know the structure of the gastropods community in the mangrove ecosystem of Tireman Village Rembang District, Central Java. Sampling method of determining location using purposive sampling method in 3 locations with different mangrove density. The gastropod sampling is done in the 5 x 5m transect and the samples obtained are then sorted, preserved and identified. The results of the study found 9 species of gastropods included in the three families, namely Casidula nucleus, C. Aurisfelis (Ellobiidae), Littoraria scabra, L. Carinifera, L. Melanostama (Littorinidae), Cerithidea quadrata, C. cingulata, C. alata, Telescopium telescopium (Potamididae). The most commonly found species are the Cassidula aurisfelis and the Cassidula nucleus. The average value of abundance ranges between 6.28-15.72 Ind/m2. The value of diversity index belongs to low to moderate category. The average value of uniformity index is included in low category (0.15-0.27). The average value of the Dominancy index indicates the absence of dominance of a particular species. The spread pattern shows both group and random distribution patterns. The value of gastropods community similarity belongs to high category. The frequency of presence of gastropods is rare until very frequent.
EKOLOGI MANGROVE DI PESISIR KECAMATAN TONGAS DAN SUMBERASIH KABUPATEN PROBOLINGGO, JAWA TIMUR Wijaya, Dyah; Suryono, Suryono; Soenardjo, Nirwani
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v8i2.25213

Abstract

Komunitas mangrove menempati area diantara darat dan laut yang memiliki kondisi lingkungan berbeda satu sama lain. Tujuan penelitian ini untuk mengetahui struktur vegetasi mangrove dan mengetahui kesesuaian jenis mangrove yang sesuai untuk perencanaan program rehabilitasi mangrove di Desa Bayeman Kecamatan Tongas dan Desa Pesisir Kecamatan Sumberasih Kabupaten Probolinggo. Penelitian dilakukan pada Bulan Maret 2015 sampai Januari 2016. Pengambilan data vegetasi dilakukan dengan metode purposive sampling dan setiap transek dibuat plot sampling. Setiap individu pohon (plot 10 m x 10 m) dan sapling (anakan) (subplot 5 m x 5 m) diidentifikasi dan diukur diameternya setinggi dada (±1,3 m). Sementara seedling (semai) dihitung jumlah masing-masing spesies dan persentase penutupannya (subplot 1 m x 1 m). Hasil penelitian di Desa Bayeman ditemukan 7 spesies mangrove dan 1 jenis spesies di Desa Pesisir. Vegetasi pohon mangrove di Desa Bayeman dan Desa Pesisir berada dalam kondisi baik. Vegetasi Mangrove di Desa Bayeman didominasi spesies Xylocarpus mollucensis dan untuk Desa Pesisir adalah Avicennia marina. Vegetation mangrove occupy the area between land and sea that have environmental conditions differ from one another. The purpose of this studied to know about the structure and composition of mangrove vegetation for rehabilitation program planning in Bayeman Sub-District of. Tongas and Pesisir Sub-Districk Sumberasih, District of Probolinggo , East Java. The studied was conducted in March, 2015 to January, 2016. Vegetation data was done with purposive sampling method and every transect was made with plot sampling method. Each tree (plot 10 m x 10 m) and sapling (subplot 5 m x 5 m) was identified and measured on diameter at breast height (± 1.3 m).  Meanwhile, Seedling calculated the amount of each species and the percentage of cover (subplot 1 m x 1 m). The research finding at Bayeman shows that there are seven mangroves and one mangrove shows in Pesisir. The mangrove vegetation at Bayeman and Pesisir in good conditions. Mangrove vegetation at Bayeman is dominated by Xylocarpus mollucensis and Mangrove vegetation at Pesisir is dominated Avicennia marina .   
PRODUKTIVITAS DAN DEKOMPOSISI SERASAH DAUN MANGROVE DI KAWASAN VEGETASI MANGROVE PASAR BANGGI, REMBANG - JAWA TENGAH Leksono, Satria Sakti Budi; Soenardjo, Nirwani; Pramesti, Rini
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v3i4.11414

Abstract

Produksi serasah mangrove merupakan bagian yang penting dalam transfer bahan organik, karena unsur hara yang dihasilkan dari proses dekomposisi serasah sangat penting dalam pertumbuhan mangrove dan sebagai sumber detritus bagi ekosistem laut dan estuari. Penelitian ini bertujuan untuk mengkaji tingkat produktivitas serasah dan kecepatan dekomposisi serasah daun mangrove di kawasan vegetasi mangrove Pasar Banggi. Hasil penelitian menunjukan bahwa rerata total produksi serasah sebesar 617,34 gr/100 m/2 minggu. Daun merupakan penyumbang terbanyak rerata total produksi serasah dan Rhizopora mucronata. lebih banyak menyumbangkan serasah dibandingkan dengan Soneratia alba. Sedangkan pada pengamatan proses R. mucronata terdekomposisi lebih cepat dibandingkan S. alba
HUBUNGAN PENGENDAPAN SUSPENDED SEDIMEN DENGAN KERAPATAN MANGROVE PADA PERAIRAN ROMOKALISARI, SURABAYA Arifin, Muhammad Yusuf; Soenardjo, Nirwani; Suryono, Chrisna Adhi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v8i4.24850

Abstract

ABSTRAK: Romokalisari merupakan bagian hilir dari sungai Lamong, dimana daerah tersebut merupakan daerah pasang surut dan rawan terhadap banjir. Romokalisari banyak ditumbuhi oleh mangrove yang sangat rapat. Tujuan penelitian ini adalah untuk mengetahui pengaruh kerapatan mangrove terhadap laju pengendapan suspended sedimen pada perairan Romokalisari, Surabaya. Sampel sedimen diambil dari 8 stasiun yang terbagi dalam wilayah muara, mangrove dan laut, dimana masing-masing stasiun diulang 4 kali dengan periode setiap minggu. Analisis sampel sedimen menggunakan metode hydrometer dan analisis data menggunakan One Way Anova. Hasil penelitian menunjukkan bahwa ada perbedaan laju pengendapan suspended sedimen antara muara, mangrove dan laut, dengan nilai p = 0,046 < 0,05. Laju pengendapan suspended tertinggi terdapat pada stasiun 1 di wilayah muara dengan nilai sebesar 86,97 g/cm2/minggu dan laju pengendapan suspended terendah terdapat pada stasiun 2 di wilayah mangrove dengan nilai sebesar14,36g/cm2/minggu. ABSTRACT: Romokalisari is downstream part of the Lamong River, where the area is tidal and prone to flooding. Romokalisari is overgrown by very dense mangroves. The aim of this study was to determine the effect of mangrove density on suspended sediment rate in Romokalisari, Surabaya. Sediment sample were taken from 8 statios divided into estuaries, mangroves, and sea areas, each station was repeated 4 times with periods each week. Analysis of sediment samples using a hydrometer and data analysis using One Way Anova. The results showed that there were differences in suspended sedimentation rates between estuaries, mangroves and seas, with a value of p = 0,046 < 0,05. The highest suspended deposition rate is at station 1 in the estuary area with a value of 86.97 g/cm2/week and the lowest suspended deposition rate is at station 2 in the mangrove area with a value of 14.36 g/cm2/week.
AKUMULASI LOGAM BERAT TIMBAL (PB) DAN PENGARUHNYA TERHADAP HISTOLOGI AKAR MANGROVE AVICENNIA MARINA (FORSSK). VIERH. DI PERAIRAN MANGUNHARJO SEMARANG Jupriyati, Ruri; Soenardjo, Nirwani; Suryono, Chrisna Adhi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v3i1.4598

Abstract

Mangunharjo areas water is an area of coastal waters and the sea which close to the settlement industry and community activities. Where feared result of industrial waste were dumped around it that cause pollution. One form of pollution is the waste produced in the form of lead (Pb) heavy metals is a heavy metal element that can not be broken down by natural processes. The existence of Pb in nature have an impact on coastal vegetation is mangrove. Mangroves are coastal ecosystems which have an important role in estuarine areas. Other mangrove function is to absorb organic and non-organic materials. The purpose of this research was to study the accumulation of lead (Pb) heavy metals in Avicennia marina mangrove roots and influences the type of heavy metal accumulation of lead (Pb) to root tissue in Avicennia marina waters Mangunharjo. This research was conducted with descriptive analytic method. The results showed the amount of heavy metals on the roots of Avicennia marina Pb higher than the Pb content of heavy metals in sediment and water indicating that these plants are able to accumulate heavy metals in the roots to absorb these elements in sediments and water. Observations cell histology showed no change in root tissues of Avicennia marina.
STRUKTUR DAN KOMPOSISI VEGETASI MANGROVE DI KAWASAN PESISIR PULAU SEBATIK, KABUPATEN NUNUKAN, KALIMANTAN TIMUR Ardiansyah, Windy Indra; Pribadi, Rudhi; Soenardjo, Nirwani
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v1i2.2039

Abstract

Sebatik Island is one of the main habitat of mangrove ecosystems in Indonesia. Based on the function, one of the mangrove forest resources with huge potential. Mangrove communities occupy the area between land and sea that have environmental conditions differ from one another. This is interesting because the management is still encountered some problems such as the conversion of mangrove forest as an area of fishpond, housing and other interests. The purpose of this study to determine the structure and composition of mangrove vegetation in Coastal Areas of Sebatik Island, Nunukan regency, East Kalimantan. The study was conducted at five locations on the island of Sebatik, the River Stake, Cape Coral, Balansiku, Setabu and Bambangan, each site is divided into 9 transects. Vegetation data retrieval done by the method of sampling survey. Each transect sampling plot made. Each individual tree (plot 10 m x 10 m) and Sapling (subplot 5 m x 5 m) were identified and measured diameter at breast height (± 1.3 m). While the calculated number of seedlings of each species and the percentage of closure (plots 1 mx 1 m). Mangrove area. The results indicate the presence of 19 species of mangrove species that fall into 14 families were found at the sites. In general, vegetation of mangrove tree is dominated by Sonneratia alba in Sebatik Island with Importance Value (IV) range from 86.83 - 171.43 % and density 500 ind/ha - 2000 ind/ha, except Bambangan which dominated by Rhizophora apiculata 86.52% and density 100 ind/ha. Sapling category, dominated by species of Sonneratia alba in Balansiku and Setabu with IV 136.65 % and 67.65 % with a density 3200 ind/ha and 1600 ind/ha. Sungai Pancang is dominated by species Avicennia alba with IV 81.64 % and density 2000 ind/ha, Tanjung Karang dominated by species Rhizopohora mucronata with IV 59.24% and density 1200 ind/ha, and Bambangan dominated by species Rhizopohora apiculata with IV 82.76% and density 2000 ind/ha. Seedling category, dominated by species of Sonneratia alba in the Sungai Pancang and Setabu with IV 107.15% and 72.79% with a density 30 000 ind/ha and 60 000 ind/ha, Tanjung Karang and Bambangan dominated by species of Rhizophora apiculata with IV 115.55 % and 136.53% and density 50 000 ind/ha and 150 000 ind/ha. species diversity and evenness was average.