scholarly journals Pengaruh Media Dan Intensitas Naungan terhadap Pertumbuhan Bibit Tancang (Bruguiera gymnorrhiza (L.) Lamk.)

2020 ◽  
Vol 11 (3) ◽  
pp. 194-198
Author(s):  
Cecep Kusmana ◽  
Yolan Yussy Sukaesih
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Mangrove Forest ◽  
Growth Response ◽  
Light Level ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Growing Media ◽  
Mangrove Seedlings ◽  
Mangrove Rehabilitation

Bruguiera gymnorrhiza is a mangrove species that can be used to rehabilitate mangrove forest. The information about the response of mangrove seedlings to the factors that affect its growth is needed to ensure its survival rate. This study aimed to examine the response of Bruguiera gymnorrhiza seedlings to the factors that affect its growth such as media and shade level. This research used a Completely Randomized Factorial Design (CRFD) with the treatments of growing media (A) and shade level (N) of 3 levels on each factor, that are mud (A0); mud and compost (A1); and mud, compost, sand (A2); also 0% shade (N0); 50% shade (N1); and 70% shade (N2) on the 3 months old seedlings. The results showed that the treatment of shade level significantly affected the growth response of B. gymnorrhiza seedlings, while the treatment of growing media and interaction of both treatments did not show a significant response. The 0% shade level gave the best growth response of B. gymnorrhiza seedlings. Keywords: Growth rate, light level, mangrove, rehabilitation, seedbed

scholarly journals Interactive Effects of Intertidal Elevation and Light Level on Early Growth of Five Mangrove Species under Sonneratia apetala Buch. Hamplantation Canopy: Turning Monocultures to Mixed Forests

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 83 ◽  
Author(s):  
Zhongmao Jiang ◽  
Wei Guan ◽  
Yanmei Xiong ◽  
Mei Li ◽  
Yujun Chen ◽  
...  
Keyword(s):  
Growth Rate ◽  
Light Level ◽  
Early Growth ◽  
Planting Density ◽  
Canopy Closure ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Effective Measure ◽  
Sonneratia Apetala

The introduced Sonneratia apetala Buch. Hamplantation plantations have occupied more than 3800 ha in China. The prevalence, fast growth rate, and high seed production of S. apetala have raised concerns about the risks to native mangrove habitats. Efforts are required to convert these introduced monocultures to mixed or native forests. In this study, we examined native mangrove colonization in the introduced S. apetala plantations at the Qi’ao Island, Zhuhai, China. A 12-month field study was conducted to evaluate the effects of intertidal elevation and light level on the survival and early growth of five native mangrove species, viz., Bruguiera gymnorrhiza (L.) Savigny, Kandelia obovata Sheue, Liu & Yong, Aegiceras corniculatum (L.) Blanco, Avicennia marina (Forssk.) Vierh., and Rhizophora stylosa Griff.. Across intertidal elevations and light levels, the survival of B.gymnorrhiza was the highest. All the species had relatively higher survival rates under 30% canopy closure. Although the seedlings survived best at high intertidal elevation, the relative growth rate (RGR) was the highest at low intertidal elevation, and it was promoted by high light level. The stem height at low intertidal elevation was higher than that at high intertidal elevation, and it was the highest under 30% canopy closure. B. gymnorrhiza and R. stylosa at high intertidal elevation had relatively high leaf numbers, whereas K. obovata and A. marina showed a reverse tendency. The growth of stem diameter showed a decreasing trend initially and then increased with better performance at low intertidal elevations, and B. gymnorrhiza presented the best value under 30% canopy closure. Bruguiera gymnorrhiza showed the highest growth rate under similar conditions. Overall, intensive canopy thinning is an effective measure to promote native mangrove growth in S. apetala plantations. Additionally, increasing planting density especially at low intertidal elevations may improve native mangrove establishment and growth. Furthermore, Bruguiera gymnorrhiza is the best choice in the effort to plant native species in S. apetala plantations in the study area.

scholarly journals KEANEKARAGAMAN JENIS MANGROVE DI DESA MENDALOK KECAMATAN SUNGAI KUNYIT KABUPATEN MEMPAWAH

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Syahrul Muharamsyah ◽  
M Sofwan Anwari ◽  
Hafiz Ardian
Keyword(s):  
Mangrove Forest ◽  
Avicennia Marina ◽  
Raw Material ◽  
Mangrove Forests ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Sonneratia Caseolaris ◽  
Rhizophora Apiculata ◽  
Bruguiera Cylindrica

Mangrove forests are unique ecosystems that have ecological, biological and socio-economic functions. The function of mangrove forests on the environment is very important especially in the coastal and oceanic regions. Mangrove forests providers of wood, leaves as raw material for medicines, and natural dye. This study aims to inventory the diversity of species of mangrove vegetation in Mendalok Village, Sungai Kunyit Subdistrict, Mempawah Regency. The benefits of this study are to provide the data on mangrove forest vegetation as basic data for local government and related agencies in efforts to protect and preserve mangrove forests in Mendalok Village, Sungai Kunyit Subdistrict, Mempawah Regency. Inventory the tree in mangrove forest used a line with measured 200 meters. There are 6 lines and the distance between the lines as far as 100 meters. The lines of observation are placed by purposive sampling. The results of research found 11 types of species and consisted of 6 genera. The genera are Avicennia, Bruguiera, Ceriops, Rhizophora, Soneratia and Xylocarpus. The species found were Avicennia alba, Avicennia marina, Bruguiera cylindrica, Bruguiera gymnorrhiza, Bruguiera parviflora, Ceriops decandra, Rhizophora apiculata, Rhizophora mucronata, Rhizophora stylosa, Sonneratia caseolaris, Xylocarpus mollucensis. Diversity of mangrove species in Mendalok Village, Sungai Kunyit Subdistrict, Mempawah Regency was high and should be maintained for conservation and ecotourism area. Keywords : conservation, ecotourism, mangrove, Mendalok Village

scholarly journals Mangrove Rehabilitation at Alo Beach (Karakelang Islands, Talaud) Using Propagul of Rhizophora mucronata Lamk

Jurnal Wasian ◽  
2017 ◽  
Vol 4 (2) ◽  
pp. 69
Author(s):  
Ady Suryawan
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Rhizophora Mucronata ◽  
Randomized Design ◽  
Waves And Tides ◽  
Survival And Growth ◽  
Mangrove Rehabilitation ◽  
Main Factor

This study aimed to know the dynamic of survival rate and growth of Rhizophora mucronata Lamk which planted by using propagules at Alo Beach, Karakelang Island, Talaud. The study was conducted from June 2013 to April 2017, used a complete randomized design with 6 treatments i.e. K1, K2, K3, K4, K5, K6. The amount of propagules in every treatment were 100 pieces each. The parameter observed were characteristic of substrat, survival rate,height and diameter of the plant’s in age of 1.5 months and 48 months. The results showed that treatment had a significant effect on survival rate and growth of Rhizophora mucronata plants. The rehabilitation was categorized as success at 1.5 months old, but it was failed inthe 48 months. Beside waves and tides, low substrat nutrition became the main factor that affect the success of mangrove rehabilitation in Alo Beach.The K5 treatment has the highest survival and growth rate of the plant. The K5 treatment using pnematophore as brace, while planting without brace/K1 has lowest survival and growth rate since months old.Keywords: mangroves, rehabilitation, Rhizophora mucronata, Talaud

scholarly journals Vegetation and Community Structure of Mangrove in Bama Resort Baluran National Park Situbondo East Java

2019 ◽  
Vol 11 (1) ◽  
pp. 132-138
Author(s):  
Sucipto Hariyanto ◽  
Akhmad Kharish Fahmi ◽  
Thin Soedarti ◽  
Emy Endah Suwarni
Keyword(s):  
Mangrove Forest ◽  
Development Program ◽  
Basal Area ◽  
Outer Zone ◽  
Wiener Index ◽  
Bruguiera Gymnorrhiza ◽  
Importance Value ◽  
Dominance Index ◽  
Mangrove Species ◽  
Rhizophora Stylosa

Ecotourism development program at Bama beaches area require baseline data of mangrove structure at Bama Resort and in the past two decades has been lost about 35% area of mangrove forest in Indonesia and in the worldThe aims of this study was to find structure, composition, distribution and zonation patterns of mangroves at Bama Resort Baluran Nasional Park. Ten belt-transects were laid perpendicular to the shoreline, using standard methods. Vegetation structure was determined using data collected on plant species diversity, density, basal area, and the number of each species of mangroves. Shannon Wiener index to calculated diversity, evennes and Simpson to calculated dominance index. The results show there are 2 families and 6 mangrove species occurring in the study areas that is Rhizophoraceae (Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Ceriops tagal) and Araceae (Nypa fruticans). The highest importance value was R. apiculata (229.90%) for trees, R. apiculata (148.69%) for the sapling, and R. apiculata (244.83%) for the seedling. The diversity (H) and dominance index (C) values were moderate (1.79) and 0.521. The most dominant species was R. apiculata (C=0.487). The mangrove zonation pattern from coastline to the mainland was R. stylosa, R. mucronata, and R. apiculata, in the outer zone, respectively (zone directly adjacent to the sea); B. gymnorrhiza and C. tagal in the middle zone; and N. fruticans in the zone that adjacent to the mainland. The present study will aid in the conduct and preservation planning of mangrove forest especially at Bama coast and generally in the coastal areas of Indonesia.

scholarly journals The Study of Mangrove Reproductive Phenology in The Rhizophoraceae Family (Bruguiera gymnorrhiza (L.) Lamk., Ceriops tagal (Perr.) C.B. Rob., Rhizophora apiculata Blume. and Rhizophora mucronata Lamk.)

2020 ◽  
Vol 20 (3) ◽  
pp. 406
Author(s):  
WD. Syarni Tala
Keyword(s):  
Mangrove Forest ◽  
Morphological Characteristics ◽  
Forest Area ◽  
Reproductive Phenology ◽  
Rhizophora Mucronata ◽  
Bruguiera Gymnorrhiza ◽  
Flower Bud ◽  
Mangrove Species ◽  
Rhizophora Apiculata ◽  
Ceriops Tagal

Kendari Bay is directly adjacent to the Kendari City area, so that it receives a lot of pressure mainly from community activities. This pressure causes the declining of mangrove forest area every year. Reproductive phenology of mangroves can be used in planning, collecting seeds, and seeding propagules for rehabilitation of degraded mangrove forest area. The aims of this research were to know the morphological characteristics of mangrove reprodutive organs and mangrove reproductive phenology of Bruguiera gymnorrhiza, Ceriops tagal, Rhizophora apiculata, and Rhizophora mucronata in Kendari Bay. The method using in this research was observation method that conducted directly in the field. Morphology and phenology of mangrove reproduction divided into 6 phases, i.e. flower bud, blooming flower, ovary, fruit, young propagule and mature propagule. The data was analysed descriptively. According to the result, the morphological characteristics of 4 mangrove species were different. Flower of B. gymnorrhiza was single, whereas flowers of C. tagal, R. apiculata and R. mucronata were inflorescences. Ovary of B. gymnorrhiza was hemi inferous, whereas ovaries of C. tagal, R. apiculata and R. mucronata were superous. R. mucronata had the largest propagule compared to other mangroves observed. The timing of mangrove reproductive phenology also showed different result. B. gymnorrhiza required 299 days to develop from flower bud to mature propagule and R. apiculata required 262 days, whereas C. tagal and R. mucronata  had not been able known its phenological period because the timing data from ovary to fruit had not been obtained. Further research is needed to resolve this issue. 

scholarly journals Acute effects of crude oilfor three common mangrove seedling in segara anakan nature reserve (sanr) cilacap, Indonesia

2018 ◽  
Vol 47 ◽  
pp. 04005 ◽  
Author(s):  
Taufan Harisam ◽  
Sugiyono ◽  
Rudhi Pribadi ◽  
Asrul Sari Siregar ◽  
Dewi Wisudyanti Budi Hastuti ◽  
...  
Keyword(s):  
Crude Oil ◽  
Nature Reserve ◽  
Acute Effects ◽  
Stem Height ◽  
Severe Damage ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Growth And Survival ◽  
Mangrove Seedlings ◽  
Plot Design

The growth of three mangrove species seedlings,Bruguiera gymnorrhiza, Rhizophora apiculataand Ceriops decandra in sediments contaminated by crude oil. Thisresearchwas designed to evaluate the acute effects of crude oil on the growth and survival performance of mangrove seedling in 4-week field experiment. Three treatments(sub plot) were compared with the control (no oil added) usingi.e. 100 ml, 120 ml and 140 ml crude oil applied once, in a split-plot design with nine replicates. The result showed the extent of survival has maximum for B. gymnorrhiza while it was minimum for C. decandra. The growth of mangrove seedlings was decrease with higher concentrations of crude oil. Stem height of B. gymnorrhiza seedling higher than R. apiculata and C. decandra.We observed, severe damage in the epidermis and the cortex at the root of all three types of mangrove seedlings when crude oil applied at 140 ml.

scholarly journals PENGARUH PENAMBAHAN KAPUR TOHOR (CaO) PADA MEDIA BUDIDAYA BERSALINITAS TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP LOBSTER AIR TAWAR (Cherax quadricarinatus)

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Rachimi . ◽  
Eka Indah Raharjo ◽  
Didin Anggoro Putra
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Calcium Oxide ◽  
Media Effects ◽  
Growth And Development ◽  
Additional Dose ◽  
Growing Media ◽  
Cherax Quadricarinatus ◽  
Random Design

ABSTRAK Penelitian ini bertujuan untuk mengetahui dosis penambahan kapur CaO pada media budidaya bersalinitas 4 ppt yang dapat menghasilkan pertumbuhan dan kelangsungan hidup yang terbaik pada lobster air tawar. Rancangan acak lengkap yang digunakan dengan 4 perlakuan, yaitu tanpa larutan CaO (kontrol) dan menggunakan CaO (30), (60),(90) ml/L dengan 3 ulangan. Hasil pengamatan pertumbuhan selama 30 hari masa pemeliharaan benih lobster air tawar diketahui bahwa penambahan kapur CaO dalam media pemeliharaan bersalinitas 4 ppt berpengaruh terhadap pertambahan  rata-rata berat dan panjang benih lobster air tawar. Laju pertumbuhan berat dan panjang benih lobster air tawar berkisar antara 2,85%–4,44% dan 1,07%–1,21%. Tingkat kelangsungan hidup selama penelitian mencapai 100% dari setiap perlakuan. Jumlah benih lobster air tawar yang moulting berkisar antara 15–21 ekor selama penelitian. Kandungan CaO yang terbaik untuk media pemeliharaan udang lobster air tawar 30 ml/L. Kata kunci : Kapur Tohor, Lobster Air Tawar ABSTRACT This study aimed at determining the additional dose of calcium oxide (CaO) on 4ppt salinity farming media to the maximum crayfish (Cherax quadricarinatus) growth and development. This study used 4 treatments of completely random design. They were CaOnon solution, CaO (30), (60), (90) ml/L with three repetitions. The observation of the growth   conducted in 30 days shows that the addition of calcium oxide (CaO)  on 4ppt salinity farming media effects on the significant increase of  the crayfish (Cherax quadricarinatus) weight and length. The growth rate of the crayfish fingerlings weight and length ranged between 2.85% and 1.07% -4.44% -1.21%. The survival rate during the treatment  reached 100% of each treatment. The number of moulting  crayfish fingerlings ranged from 15-21 during the treatment. In addition, the CaO content is considered as the proper content  for maintenance crayfish growing media at 30 ml/L Keywords: Calcium Oxide, Crayfish

Resource demand estimates for sustainable forest management: Mngazana Mangrove Forest, South Africa

Bothalia ◽  
2008 ◽  
Vol 38 (1) ◽  
pp. 103-110 ◽  
Author(s):  
C. H. Traynor ◽  
T. R. Hill
Keyword(s):  
South Africa ◽  
Forest Management ◽  
Mangrove Forest ◽  
Sustainable Forest Management ◽  
Standing Stock ◽  
Building Construction ◽  
Limited Information ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Forest Policies

Since democratization in 1994, South African forest policies have promoted sustainable forest management. However, implementation has been problematic due to limited information concerning forest product utilization. This paper investigates and quantifies timber use from the Mngazana Mangrove Forest. Eastern Cape Province. South Africa. Three local communities utilize stems of the mangrove species Rhizophora mucronata Lam. and Bruguiera gymnorrhiza (L.) Lam. for building construction. There were two distinct building shapes, circular and rectangular. On average. 155 stems were used for circular buildings and 378 stems for rectangular buildings. Most buildings were constructed using mangroves as well as indigenous timber from coastal scarp forests. The proportion of mangrove stems in buildings varied from 0 to 95%. The annual demand for mangroves was estimated to be 18 400 stems. Due to the high annual demand, projected human population growth rates have a minor influence upon future demand values. For effective sustainable forest management, the standing stock at Mngazana should be restricted to the two mangrove species utilized for building construction, and a forest inventory performed so that demand for building can be compared to supply.

Computed Tomography and light microscopy: combining visualisation techniques in the study of mangrove seedling development

IAWA Journal ◽  
2016 ◽  
Vol 37 (1) ◽  
pp. 28-S3 ◽  
Author(s):  
Nathalie Tonné ◽  
Nico Koedam ◽  
Nico Buls ◽  
Johan De Mey ◽  
Hans Beeckman ◽  
...  
Keyword(s):  
Light Microscopy ◽  
Vascular Tissue ◽  
Ct Scanning ◽  
Developmental Study ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
X Ray ◽  
Internal Development ◽  
Mangrove Seedlings ◽  
Over Time

When seedlings grow into young plants their tissue proportions change over time. Viviparous mangrove seedlings of the Rhizophoraceae are different from other young trees. They consist of a thickened cylinder-shaped hypocotyl that allows the seedlings to float and disperse before establishment. Despite the crucial role in the ecological and biogeographical success of mangroves, not much has been published about the internal development of mangrove seedlings in their early life stages. We used X-ray CT-scanning and light microscopy to investigate the internal development (i) over time and (ii) with hypocotyl height in seedlings of the mangrove species Bruguiera gymnorrhiza and Ceriops tagal. While light microscopy offered cell- and tissue identification in destructive transverse sections, X-ray CT-scanning allowed investigating the internal tissue development of living plants over time in a non-destructive way. Our results indicated that the vascular tissue proportionally increased over time and with hypocotyl height in both species in accordance with the growing importance of this tissue in the developing seedlings. As a result, the cortex, composed of an inner and outer zone, proportionally decreased over time and with height in both species. No clear trends over time and with height could be observed regarding the proportion of the pith tissue. A decrease in average density of all tissues together with height was discerned in both species indicating the seedlings were heavier at their base. The latter suggests a supporting role of the seedling base in tidal and wind action. The combination of CT-scanning and light microscopy offered the advantages of both methods in the developmental study of young mangrove plants, and opens perspectives in the study of internal development of young plants in general.

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