Gastropod is one the mollusk phylum that can adapted at the mangrove ecosystem. Gastropod are organisms that have an ecological role as forming detritus. The study aimed to examine species diversity of gastropods in the mangrove forest ecosystem of Sebubus Village, Paloh District, Sambas Regency. The study was conducted in April 2019, using the survey method. Observations found 6 families and 16 species of gastropods in the mangrove ecosystem. Gastropods species are Chicoreus capucinus, Nerita balteata, Neritina cornucopia, Nerita violacea, Cerithideopsilla alata, Cerithidiopsis quoyii, Cerithidea obtusa, Littoraria scabra, Littoraria undulata, Littoraria carinifera, Nassarius dorsatus, Cassarius dorsatus, Cassidula aurisfelis, Ellobium aurisjudae, Cassidula nucleus, Pythia plicata, and Ellobium gangeticum. Species diversity index of gastropod in zone 1 = 0.83, zone 2 = 0.73 and zone 3 = 0.79 in the low category. Species abundance index of gastropod in zone 1 = 15.3, zone 2 = 10.5, zone 3 = 15.8. Species evenness index of gastropod in zone 1 = 0.32, zone 2 = 0.30 and zone 3 = 0.30 categorized as low. Species dominance index of gastropod in zone 1 = 0.20, zone 2 = 0.28 and zone 3 = 0.25 are categorized as low. Species similiarity index of gastropod in zone 1 and 2 = 91.67%, zone 2 and 3 = 80.00%, zone 1 and 3 = 81.48 are categorized very high.Keywords: Diversity, Gastropods, Mangrove Ecosystems
1. Most of the Bornean endemic freshwater mussel (Unionida) species known to date have not been recorded by science for the past 50 years or more, owing to a lack of research effort and presumed population losses.2. This study assessed current patterns and recent changes in the diversity and distribution of freshwater mussels in north-eastern Borneo. Physical surveys and interviews were conducted at 24 sites, and anecdotal evidence for current or historical presence of mussels was collected for a further 13 sites. 3. Native species, i.e. Schepmania sp. and Khairuloconcha sahanae gen. & sp. nov., were only found in one small stream of the Kinabatangan River basin within the Gomantong Forest Reserve, whereas the non-native Sinanodonta cf. woodiana was common across the study area. 4. Molecular phylogenetics (five genes) of the native taxa, including comparative material from West Kalimantan and Sarawak, revealed: (i) the presence of a new genus with two new, rare species: Khairuloconcha lunbawangorum sp. nov. in the Limbang River basin and K. sahanae in the Kinabatangan River basin; (ii) that Khairuloconcha and Ctenodesma form the Bornean endemic tribe Ctenodesmini trib. nov.; and (iii) that Schepmania represents another Bornean endemic tribe Schepmaniini trib. nov. 5. Both Khairuloconcha gen. nov. species are known from a single stream each and are apparently restricted to forest stream habitats where they occur at very low densities. Schepmania appears to have a severely contracted range in the Kinabatangan and adjacent basins. We urgently call for full protection of the currently known sites of K. lunbawangorum and K. sahanae, and development of an action plan to save the Bornean freshwater mussel fauna.
Seedlings are the first step in providing ready-to-plant seedlings and supporting sustainable forest-building processes. Growth of good quality tree, required seeds healthy, superior and free from pests and diseases in the nursery area. Lack of information on the types of pests and diseases that attack plants in the nursery at PT. Sari Bumi Kusuma KM. 93, it is necessary to identify clearly in order to know the types of pests and diseases that attack and further control measures against pest and disease attacks. Pests are all animals that cause losses to forest trees and forest products such as insects, squirrels, rats, pigs, deer and others. But the reality in the field of potential and explosive pests cause losses is from the insect class. Illness is the deterioration of physiological processes caused by a continuous pressure or disorder of a major (biotic or abiotic) cause that cell or tissue activity becomes abnormal, which is described in a typical pathology form called a symptom or sign. It is these symptoms or signs that indicate whether the tree in the forest is healthy or sick. The pest was found are caterpillar, looper and grasshopper leaves. The deaseas are trunk cancer, fruit tumor, leaves spott, gaal and fungi.Keywords: Nursery, pests, diseases.
Karimunting Village is a coastal area that has a mangrove with contained several faunas in it, one of which is a fiddler crab. The fiddler crab is a Decapoda ordo and it is included in the Ocypodidae family. This study aims to collect data on the diversity of fiddler crabs in Karimunting Village. The method used in this study is a survey, while the sample is collected by applying the transect line with a purposive sampling technique. The transect line is 500 m length, with a total of three lanes. There are ten plots of 1x1 meter in size in each transect lines to pick up fiddler crabs. Fiddler crabs species were found in 6 species, namely Uca paradussumieri, Uca annulipes, Uca forcipata, Uca rosea, Uca crassipes and Uca tetragonon. The Shannon-Winner species diversity index (H') of fiddler crabs in 1st and 2nd lanes both are categorized medium, while in the 3rd lane is categorized low. The range of values H'=0,3-1,5. The value of species abundance index (Xi) ranges from 3-16.6 ind/m2. The value of evenness index (e) ranges from 0,72 to 0,84. The dominance index value (C) ranges from 0,3 to 0,5 categorized as the absence of the dominant species of fiddler crab. Comparison of species similarity index (IS) for each lane is categorized differently, for the 1st and 2nd lane the index is 91% and categorized as having high species similarity, then in 2nd and 3rd lane the index is 75% and categorized as having a medium species similarity, whereas the index for 1st and 3rd is 60%, therefore it is categorized as having low species similarity.Keyword: Diversity, Fiddler Crab, Karimunting Village
The mangrove forest in Sutera Village is a mangrove tourism forest located in Sukadana District which has an important role as a place of care, foraging and spawning for various types of animals such as crustaceans, fish and gastropods. Gastropods are soft-bodied animals that have a shell on the outer part of the body used to protect themselves from danger or predators. This study aims to identify the types of gastropods in the mangrove forests of Sutera Village, Sukadana District, Kayong Utara Regency. The results showed that in the mangrove forests of Sutera Village, Sukadana District, Kayong Utara Regency, 403 individuals consisting of 20 species and 7 families were found. The types of gastropods were Ellobium aurisjudae, Ellobium gangeticum, Cassidula nucleus, Cassidula aurisfelis, Ellobium aurismidae, Cerithidea quadrata, Cerithidea quoyii, Cerithidea cingulata, Cerithidea alata, Cerithidea obtusa, Chicoreus capucinus, Indothais gradata, Littoraria scabra, Littoraria melanostoma, Littoraria cingulata, Littoraria carinifera, Natica gualteriana, Nerita balteata, Neritina cornucopia and Onchidium sp. Keywords : Identification, Gastropods, Mangrove Forest
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
Forest mangrove constitute some ecosystem estuaria with system that apoplectic terbuka open and amenable nutrition pretty material organic and non organic along sediment from circle terrestrial. Literally ecology forest mangrove have a role urgent inside guard awkwaedness live water the sea and coastal. Literally economical, some research show that mangrove gives contributions to fish resources revolved 30%-44,18% the mangrove region a habitat for the various of fish, even some types of fish do breeding in the mangrove area. This research is aimed at exploring the diversity in the river mangrove area kakap district Kubu Raya Province Borneo. Methods that used inside research here that is perposive sampling using tools catch nets and dragnet with 10 supprssant on broads 50 meter and installation draget at any dot observations. Samples taken in the show 6 points of observation within 100 meters. The setting of the sample points was done in the labyrinth p the mangrove orest, which is fine, moderate and badly demaged. Observations in the mangrove conditions affect the diversity of fish such as fine, moderate, and degraded conditions, the result is evidenced by accounts based on the reddish diersity in each observation station on this study is found as many as 5 different fish.Keyword : Fish, Mangrove, Species Diversity Of Fish
The fiddler crab is also known as the kepiting biola is an animal that has broad legs that belong to the Crustacean class. Fiddler crab is a type of crab that has a habitat in intertidal areas, especially around mangrove forests and sandy beaches. This study aims to examine the identification of fiddler crab species found in the Mangrove Sebubus. The method used in this research is purposive sampling method with the use of a square plot size of 1 x 1 meter as many as 30 pieces in 3 research lines. The results showed as many as 7 species of fiddler crabs found there, that is Uca annulipes, Uca rosea, Uca forcipata, Uca bellator, Uca tetragonon, Uca paradussumieri, and Uca acuta.Keywords: Identification, Fiddler Crab, Mangrove Sebubus
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