Study on Stand Structure of Secondary Mangrove Forest: Sonneratia caseolaris-Aegiceras corniculatum Stand for Introducing Silvofishery Systems to Shrimp Culture Ponds

2021 ◽  
pp. 495-504
Author(s):  
Kazuya Takahashi ◽  
Tuyen Thi Tran
2001 ◽  
Vol 17 (3) ◽  
pp. 431-447 ◽  
Author(s):  
SHALINI PANDIT ◽  
B. C. CHOUDHURY

Pollinator visitation to, and the reproductive success of, Sonneratia caseolaris (Sonneratiaceae) and Aegiceras corniculatum (Myrsinaceae) was investigated in a mangrove forest in India. S. caseolaris was shown to be primarily outcrossed and A. corniculatum was shown to be a selfing species. The flowers of both plant species attracted several diurnal and nocturnal visitors. Earlier reports had indicated that S. caseolaris flowered for one night and was exclusively night-pollinated. But flowers of this species were found to be in bloom both at night and during the day, and diurnal visitors to the flowers were more diverse and frequent than nocturnal ones. This was related to the higher volume and energy value of nectar in the morning. The effects of time of day and temperature on visitation rates were quantified. The importance of visitors to plant reproductive success was investigated via controlled visitor-exclusion experiments. Pollinators were expected to be more important for the outcrossing species than for the selfing species, and this was confirmed by the results of the exclusion experiments. In S. caseolaris reproductive success was determined both by pollinator availability and the intensity of flower and fruit predation, while in A. corniculatum it is likely to be resource limited.


2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Syahrul Muharamsyah ◽  
M Sofwan Anwari ◽  
Hafiz Ardian

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


2009 ◽  
Vol 85 (2) ◽  
pp. 241-246 ◽  
Author(s):  
Luzhen Chen ◽  
Qijie Zan ◽  
Mingguang Li ◽  
Jinyu Shen ◽  
Wenbo Liao

2018 ◽  
Vol 14 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Md. Kamruzzaman ◽  
Shamim Ahmed ◽  
Sumonta Paul ◽  
Md. Mizanur Rahman ◽  
Akira Osawa

2014 ◽  
Vol 1 (2) ◽  
pp. 137
Author(s):  
Erma Septyaningsih ◽  
Erwin Riyanto Ardli ◽  
Ani Widyastuti

Mangrove communities are part of the natural coastal ecosystems that have a vital role, such as the greatest source of organic material for the surrounding aquatic environment. A variety of ecological phenomenon often happens recently, either directly or indirectly affects the change of mangrove vegetations. Leaf is one of the plant organs that change shape according to the condition of the mangroves and the aquatic environment where the plant lives. The common changes of the leaves are the symmetry (morphometry), the size, and the shape. Mangrove leaves are also subjected to herbivory (predation), that will result in reduced leaf area of the photosynthesis and lowered the production of organic matter to the surrounding waters. This research aimed to determine the morphometric variation and herbivory rates of mangrove leaves at Segara Anakan Cilacap. Mangrove samples were Aegiceras corniculatum, Avicennia marina, Ceriops tagal, Rhizophora apiculata, and Sonneratia caseolaris. The study used survey method with stratified random sampling technique. The results showed morphometric variations of the five species were three variations, while the average herbivory rate from highest to lowest were: Avicennia marina (7.46%), Sonneratia caseolaris (6.91%), Rhizophora apiculata (4.08%), Aegiceras corniculatum (3.42%) and Ceriops tagal (3.00%). The difference of age and species of leves affected the herbivory level.


2016 ◽  
Vol 4 (1) ◽  
pp. 69
Author(s):  
Dewi Masithah ◽  
Asihing Kustanti ◽  
Rudi Hilmanto

Mangrove forest was a tropical and sub tropical forests vegetation. It dominated by some of mangrove trees which it growed and developed in the tidal muddy along the coastal area.  The mangrove forest of Merak Belantung of South Lampung  had some commodities which it had a economic value and could benefits for the community.  The economic value information aimed by interview the respondents.   The economic comodities of mangrove were fishes namely: kakap (Lutjanus sp.), belanak (Valamugil seheli), gelodok (Periophthalus modestus), and varieties of seashells (tiram (Crassostrea gigas) and lukan (Geloina erosa)), crabs (Brachyura), shrimp (Penaeusmonodon), and sonneratia fruit (Sonneratia caseolaris).  The economic value of commodities could discovered and calculated with assessment based on market valuation and willingness to accept payment (WTA) methods.  Total economic value from mangrove forest commodities was IDR 754.090.000/year from 8 types commodity. Key word  :     mangrove forest commodity, assessment based on market value, willingness to accept (WTA)


2020 ◽  
Author(s):  
Md. Abdus Shahid

Abstract The Bangladesh coastal region located at the apex of the Bay of Bengal is endowed with a vast area of mangrove forests covering about 6,900 km2. Mangroves are a group of salt-tolerant trees and other plant species which thrive in the inter-tidal zones of sheltered tropical shores, islands and estuaries. They have specially adapted aerial and salt-filtering roots and salt-excreting leaves that enable them to occupy the saline wetlands where other plant life cannot survive. This forest ecosystem plays an important role for coastal inshore as well as offshore fisheries as it provides food and nursery grounds. Unfortunately, mangrove forests are being denuded for shrimp culture. An important example of mangrove denudation is the Chakaria Sundarban where 8,540 ha of mangrove forest has been encroached upon by shrimp farming. The production of shrimp in the mangrove-cleared area has gradually decreased due to increasing soil acidity and decreasing mangrove litter fall in the area. During the period 1975-2001, a total of 9,734 ha of mangrove forest (less than 2% of the total mangrove forest area of the country) was found to be denuded due to shrimp farming along the Bangladesh coast. Although denudation of mangrove forests is negligible compared to other countries of the region, it is creating environmental problems in the coastal region of Bangladesh.


2018 ◽  
Vol 77 (13) ◽  
Author(s):  
Mohamad Zakaria Rozainah ◽  
Ahmad Bakrin Sofawi ◽  
Nur Adibah Joharee ◽  
Ahmad Zulkifli Pauzi

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