scholarly journals Diversitas Gastropoda pada Akar Mangrove di Pulau Sirandah, Padang, Sumatera Barat

2018 ◽  
Vol 5 (1) ◽  
pp. 34
Author(s):  
Hirzan Riyandi ◽  
Indra Junaidi Zakaria ◽  
Izmiarti Izmiarti

Currently, there are a lot of activities in Sirandah Island, such as tourism activities and deforestation to support the activities. Mangrove forest distruction makes a useable area might have negative effect to mangrove ecosystem itself or mollusc community. This research was conducted on mangrove roots area from February until October 2016. The aim of this research is to know the diversity of Gastropods on the roots of the mangrove. This research was conducted using survey method and purposive sampling method to collecting data. We recorded 8 genera of Gastropods belong to 8 families, named Cerithium, Conus, Ellobium, Littorina, Melongena, Nerita, Cymatium and Turbo. The highest abundance was found in the genus of  Littorina with 59.33 individuals/tree. Based on location, abundance ranged from 4.33-60.33 individuals/tree with the highest abundance on mangrove roots of Barringtonia asiatica. Diversity indices of Gastropods on mangrove roots in Sirandah Island ranged from 0.77 to 1.42 which is relative low range.

Author(s):  
Rendra Rini Rismatul Chusna ◽  
Siti Rudiyanti ◽  
Suryanti Suryanti

 Substrat mangrove terdiri atas fraksi pasir (sand), lumpur (silt), dan liat (clay). Gastropoda adalah kelompok hewan dari filum moluska yang hidup di jenis substrat dari kasar ke halus. Kelimpahan gastropoda dipengaruhi oleh substrat dasar yang merupakan habitat dari gastropoda, serta kandungan nutrien yang berbeda pada tiap fraksi akan mempengaruhi kelimpahan Gastropoda yang berada di dalamnya. Oleh karena itu, perlu dilakukan penelitian mengenai hubungan substrat dengan kelimpahan Gastropoda, karena Gastropoda salah satu faktor penting untuk menjaga keseimbangan ekologi pesisir khususnya ekositem mangrove. Penelitian  dilakukan di Hutan Mangrove Kulonprogo Yogyakarta bertujuan untuk mengetahui tipe substrat, kelimpahan Gastropoda dan hubungan kedua variabel tersebut. Penelitian  dilakukan pada bulan April sampai dengan  Mei 2017. Metode yang digunakan adalah metode deskriptif yaitu metode penelitian yang memberikan gambaran secara sistematis, faktual, akurat mengenai faktor-faktor dan sifat-sifat dari suatu daerah atau populasi. Metode pengambilan sampel substrat dan Gastropoda menggunakan metode Purposive Sampling Method pada 3 stasiun berbeda yaitu stasiun I pada bagian dekat pemukiman penduduk, stasiun II pada bagian dekat tambak, dan stasiun III pada bagian muara sungai. Hasil penelitian menunjukkan jenis substrat pada tiap stasiun adalah lempung dan lempung berdebu yang didominasi oleh fraksi lumpur (silt) dan pasir (sand). Jenis Gastropoda yang didapatkan berasal dari genus Littoraria, Natica, Faunus, Cerithium, Neritina, Polinices, Conus, Telescopium, dan Nerita. Meningkatnya prosentase fraksi pasir (sand) dan liat (clay) akan diikuti oleh meningkatnya kelimpahan Gastropoda, sedangkan untuk fraksi lumpur (silt) akan sebaliknya yaitu meningkatnya fraksi lumpur akan diikuti oleh menurunnya kelimpahan Gastropoda. Kata kunci: Tipe Substrat, Gastropoda, Mangrove, Kulonprogo  Mangrove substrates formed by sands, silts, and clays. Gastropods is a group of animals of the phylum of mollusks lives on the type of substrate from rough to smooth. Gastropod abundance is affected by substrate which habitat of gastropods and nutrients influencing the distribution of gastropods. Therefore, it needs a deeper research about the correlation of substrate and the amount of gastropods , because gastropods are the importants factor of mangrove ecosystem. The research helds in Kulonprogo Mangrove Forest, Yogyakarta, and the goals are to know the type of substrate, the amount of gastropods, and the correlation among them. This research held on April – Mei 2017. This research use descriptivemethod wich research method that provide a systematic, factual, accurate description of the factors and quality an area or population. The method on sampling sediments and gastropods is purposive sampling in 3 station. Station 1 near the settlement, station 2 near ponds, station 3 on the estuary. The results of this research shows that the sediments on every station are clay and dusty clay, which is dominated by silt,and sand fraction. The gastropods that obtained are Littoraria, Natica, Faunus, Cerithium, Neritina, Polinices, Conus, Telescopium, and Nerita. The percentage increasing on sands and clays fraction would be more gastropods. Otherwise on silts fraction.   


2019 ◽  
Vol 8 (1) ◽  
pp. 94-106
Author(s):  
Yonanda Alodea Christy ◽  
Wilis Ari Setyati ◽  
Rudhi Pribadi

Ekosistem hutan mangrove merupakan ekosistem yang berada di kawasan pesisir yang memiliki fungsi fisik, fungsi ekologi dan fungsi ekonomi. Dampak kerusakan ekosistem hutan mangrove dapat dipulihkan dengan adanya kegiatan rehabilitasi dan konservasi di kawasan hutan mangrove. Pemanfaatan nilai ekonomi dari ekosistem hutan mangrove memerlukan perhitungan valuasi ekonomi guna melihat aktivitas ekonomi yang ada pada ekosistem hutan mangrove. Tujuan penelitian ini yaitu untuk menghitung nilai total ekonomi di ekosistem hutan mangrove dan merekomendasikan strategi pengembangan dan pengelolaan kawasan ekosistem mangrove di Desa Kaliwlingi dan Desa Sawojajar, Kabupaten Brebes, Jawa Tengah. Metode penelitian yang digunakan adalah metode deskriptif dan eksploratif. Penentuan lokasi penelitian dilakukan dengan metode purposive sampling. Sampel penelitian yang diambil adalah masyarakat yang mempunyai mata pencaharian berkaitan dengan keberadaan ekosistem hutan mangrove secara langsung dan tidak langsung. Berdasarkan hasil penelitian menunjukan nilai total ekonomi ekosistem hutan mangrove di Desa Kaliwlingi adalah sebesar Rp 12.912.098.100 yang didapatkan dari total use value sebesar Rp 9.927.638.100 dan total non use value sebesar Rp 2.984.460.000. Nilai total ekonomi di Desa Sawojajar adalah sebesar Rp 5.519.784.145 dengan jumlah nilai use value sebesar Rp 3.670.377.145 dan nilai non use value sebesar Rp 1.849.407.000. Mangrove forest ecosystem are the ecosystem that is located in coastal environment that have a physical function, ecological function and economic function. The effect of damaged can be heal if there is a rehabilitation and conservation in mangrove ecosystem. The value of economic from mangrove ecosystem needs a calculation of valuation to look up the economic activity in mangrove forest ecocsystem. The aim of the research are calculate the economic total value of mangrove forest ecosystem and recommend a developing and managing strategy of mangrove ecosystem at Kaliwlingi Village and Sawojajar village. The method of the research is use descriptive and explorative method. The location of the research conducted by purposive sampling method. The sample of the study is the residents related to the existence of the mangrove ecosystem directly and indirectly. Based on the results of the research showed the total economic of mangrove forest ecosystem in Kaliwlingi Village is Rp 12.912.098.100 that comes from the total amount of use value Rp 9.927.638.100 and non use value Rp 2.984.460.000. The total economic value in Sawojajar village is Rp 5.519.784.145 that comes from the total amount of use value Rp 3.670.377.145 and non use value Rp 1.849.407.000.


Author(s):  
Fitria Ulfa ◽  
Muhammad Ali Sarong ◽  
Abdullah Abdullah

This study aims to determine the impact of the land transfer to the diversity of mangrove benthos in the district of Banda Aceh Jaya Baru. This research was conducted in September-November 2014 in an area of mangrove Jaya Baru sub-district of Banda Aceh. The method used survey method or direct observation. Stations were divided into four stations using purposive sampling method on the basis of the existence of mangrove. Benthos diversity analyzed by formula diversity index, while the impact of the transfer was analyzed with the description. The results obtained by analysis of benthos diversity on land that has been reclaimed 1.18 and on land that is not reclaimed 1,17. The conclusion is the diversity of benthos was proving that the land transfer mangrove in the district of Banda Aceh Jaya Baru impact on the benthos diversity that needs to be disseminated and awareness-raising so that the mangrove ecosystem is maintained.


2020 ◽  
Vol 5 (2) ◽  
pp. 66-71
Author(s):  
Moch. Chasan Basri ◽  
Hari Santoso ◽  
Saimul Laili

  Mangrove forests are the one of the coastal ecosystems; especially the northern coast and many are founded in the surrounding fish ecosystems. That organism is the one of the fauna which mangrove ecosystem constituent. The aim of this study was to determine the density and abundance of the population of Gelodok fish at mangrove areas in Penunggul Village, Nguling District. This study used a purposive sampling method from three stations and each station has three plots and three replications in each plot. The results showed that the density of frog fish in the mangrove forest area of ​​Nguling village at station 1 was 3 as well as at station 2 and 3 respectively 2 and 1. At station 1 there were three species, namely Baleopthalmus boddarti, Periopthalmus dipus, Periophthalmus Gracilis, station 2, there were two species; Baleopthalmus boddarti, Periophthalmus Gracilis, and station 3 there were three species namely Baleopthalmus boddarti, Periopthalmodon schlosseri, Periopthalmus dipus. The differences in the results of the study, environmental conditions and abiotic factors influence the density of fish in the mangrove area and at the station 1 the density is highe. Keywords: Gelodok fish, mangrove forest, population ABSTRAK Hutan mangrove merupakan salah satu ekosistem daerah pantai terutama pantai utara dan banyak di temui ikan Gelodok di sekitar ekositem ini. Organisme tersebut merupakan salah satu fauna penyusun ekositem mangrove. Tujuan penelitian ini untuk mengetahui kepadatan dan kemelimpahan populasi ikan Gelodok kawasan mangrove desa Penunggul Kecamatan Nguling. Penelitian ini menggunakan metode purposive sampling dari tiga stasiun dan setiap stasiun terdapat tiga plot dengan ulangan tiga kali dalam setiap plot. Hasil penelitian menunjukkan bahwa kepadatan ikan gelodok di kawasan hutan mangrove desa Nguling rata-rata pada stasiun 1 adalah 3, di satsiun 2; 2 dan 3; 1. Pada stasiun 1 terdapat tiga spesies yaitu Baleopthalmus boddarti, Periopthalmus dipus, Periophthalmus Gracilis , stasiun 2 terdapat dua spesies yaitu Baleopthalmus boddarti, Periophthalmus Gracilis dan stasiun 3 terdapat tiga spesies yaitu Baleopthalmus boddarti, Periopthalmodon schlosseri, Periopthalmus dipus. Perbedaan hasil penelitian, kondisi lingkungan dan faktor abiotik mempengaruhi kepadatan ikan Gelodok di kawasan mangrove, sehingga pada stasiun 1 diperoleh kepadatan  lebih tinggi. Kata kunci: ikan Gelodok, hutan mangrove, kepadatan populasi    


2021 ◽  
Vol 1 (1) ◽  
pp. 1-8
Author(s):  
Ibadur Rahman ◽  
Chandrika Eka Larasati ◽  
Ayu Adhita Damayanti

The mangrove ecosystem is one of the ecosystems in the estuary area that is unique and very sensitive to environmental changes. The large number of aquaculture businesses around Cemare Hamlet, West Lombok Regency have resulted in many mangrove areas being converted into pond cultivation locations. This will have an impact on the life of mangrove ecosystems such as plankton. This study aims to determine the abundance of plankton species around the mangrove area of ??Dusun Cemare, Sheet Selatan Village, West Lombok Regency. The research was conducted in May-October 2019 using a purposive sampling method by determining 7 stations to represent water conditions. Plankton analysis using the Lackey drop microtranscting method. The results showed that the mangrove ecosystem in Dusun Cemare was composed of 4 types, namely: Rhizophora sp., Avicenia sp., Bruguiera sp., And Soneratia sp. The plankton community in mangrove waters is composed of 13 types, while the abundance of plankton species (periphyton) attached to the mangrove roots consists of 6 types. The composition of plankton species which tends to be high indicates that the mangrove waters of Dusun Cemare are still feasible to sustain the survival of the associated biota in it.


2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Sapto Prayoga ◽  
Burhanuddin Burhanuddin ◽  
Evy Wardenaar

Mangrove Forest has a role for the life of fauna as a source of feed and shelter for honeybees. Honeybees need feed to maintain their survival in nature, so that the availability of the feed generated by flowers in the form of nectar and pollen gives the ability of bees to breed with maximum. This research aims to obtain the type of mangrove plants and pollen, and its potential in Surya Perdana Mandiri Mangrove Forest area. The research method used is a survey method with the example tile determination Purposive Sampling. There are 10 sample compartments of 20 x 20 meters in 2 research lines. Based on the results of the research is known that there are 22 types of mangrove plants, based on observations, 13 of which are the source of honey bee feed, and based on the study of literatures there are 18 The potential feed bees at the highest tree level on the Api-api putih (Avicemia Marina) with an INP value of 82.17% and the smallest value Ceriop decandra 17.50% while at the highest INP stake level of Rhizopora stylosa 76.08% with flowering 83.44% while the smallest INP Ceriop decandra 22.63% with flowering 36.36%. In the area of Mangrove Forest Setapuk Large types of honey bee feed plant available throughout the year, although in quantity varies from month to monthKeywords: bee feed, mangrove, potential, Setapuk Besar


2018 ◽  
Vol 7 (3) ◽  
pp. 253-262
Author(s):  
Faudzi Ath Tho Azzam ◽  
Niniek Widyorini ◽  
Bambang Sulardiono

Sungai Lanangan merupakan bagian hulu Sungai Bengawan Solo yang terletak di Desa Daleman, Kecamatan Tulung, Kabupaten Klaten. Jenis limbah seperti limbah domestik, industri, pertanian, perikanan dan peternakan telah mencemari Sungai Lanangan. Limbah organik dari industri tepung aren dan mie soun yang dibuang di Sungai Lanangan mencapai 50 ton limbah per hari. Hal tersebut menyebabkan perubahan kualitas air dan komposisi fitoplankton di Sungai Lanangan.Penelitian ini dilakukan dari bulan Januari - Februari 2018 di Sungai Lanangan. Tujuan dari penelitian ini adalah untuk mengetahui kelimpahan dan komposisifitoplankton serta mengetahui kualitas perairan berdasarkan struktur komunitas fitoplankton di Sungai Lanangan tersebut. Penelitian ini menggunakan metode survei denganpengambilan sampel menggunakan metode purposive sampling. Frekuensi pengambilan sampel dilakukan setiap 1 minggu sekali selama 3 minggu. Sampel diambil dari 3 stasiun, dimana stasiun 1 dengan karakteristik perairan terbuka; Stasiun 2 dengan karakteristik dekat industri pengolahan tepung aren; dan stasiun 3 dengan karakteristik dekat dengan daerah budidaya air tawar.Hasil penelitian didapatkan 11 genera fitoplankton yaitu dari kelas Bacillariophyceae (4 genera), Cyanophyceae (2 genera), Chrysophyceae (1 genus), Ulvophyceae (2 genera), Zygnematophyceae (1 genus) dan Chlorophyceae (1 genus). Kelimpahan rata-rata fitoplankton tertinggi terdapat pada stasiun 2 dengan kelimpahan 1.989 ind/l yang didominasi oleh genus Oscillatoria. Indeks keanekaragaman rata-rata pada setiap stasiun adalah 1,68 pada stasiun 1; 1,63 pada stasiun 2; dan 1,52 pada stasiun 3. Dari hasil indeks keanekaragaman yang didapatkan tersebut menunjukkan kisaran nilai antara 1,52 hingga 1,68 yang berarti bahwa kualitas perairan Sungai Lanangan tercemar ringan.  Lanangan river is one upstream of Bengawan Solo river which located at Daleman, Tulung, Klaten. types of waste such as domestic waste, industrial waste, agriculture, fishery and animal husbandry polluted Lanangan river. Especially organic waste from palm starch and soun noodle industry that are dumped in the Lanangan river reaches 50 tonnes waste per day. This research was conducted from January to February 2018 in the Lanangan river. The purpose of this research is to find out the abundance and composition of phytoplankton; and to determine the water qualitybased on the structure of the phytoplankton community in Lanangan river. This research uses survey method and use purposive sampling method. The Frequency of sampling is done once a week for 3 week. The samples taken from 3 stations, where station 1 is open water; Station 2 is near palm starch and soun noodle industry; and station 3 is close to freshwater aquaculture area.The resultsof the research found 11 genus of phytoplankton in class Bacillariophyceae, Cyanophyceae, Chrysophyceae, Ulvophyceae, Zygnematophyceae and Chlorophyceae. The highest average of phytoplankton abundance found in station 2 with 1,989 ind/l which is dominated by the genus of Oscillatoria. The average diversity index each station is 1.68 at station 1; 1.63 at station 2; and 1.52 at station 3. From the results obtained the diversity index indicates the range of values between 1.52 to 1.68 which show that the water quality of Lanangan River is lightly to moderate polluted.  


2019 ◽  
Vol 8 (3) ◽  
pp. 221-225
Author(s):  
Danang Adi Saputro ◽  
Frida Purwanti ◽  
Siti Rudiyanti

ABSTRAK Mangrove merupakan tumbuhan yang hidup di daerah pasang surut sebagai ekosistem interface antara daratan dengan lautan. Ekosistem mangrove di desa Pasar Banggi Kabupaten Rembang merupakan perpaduan antara mangrove alami dan hasil rehabilitasi. Tujuan penelitian ini untuk mengetahui kondisi mangrove di Desa Pasar Banggi, Rembang dilihat dari  komposisi jenis, kerapatan dan ketebalan mangrove serta menganalisis tingkat kesesuaian wisata mangrove di Desa Pasar Banggi, Rembang. Metode yang digunakan adalah metode survey lapangan yang bersifat eksploratif, dimana  teknis pengumpulan data menggunakan sistematik sampling. Data yang diambil meliputi 5 variabel yaitu: jenis, kerapatan mangrove dan asosiasi biota (hasil pengamatan lapangan dan perbandingan dari penelitian terdahulu), ketebalan (citra Google Earth Oktober 2016), pasang surut (data BMKG Oktober 2016). Pengambilan sampel dilakukan pada 3 stasiun, dimana setiap stasiun terdapat 3 titik sampling. Komposisi jenis mangrove di desa Pasar Banggi terdapat 3 jenis mangrove yaitu Rhizopora stylosa, R. mucronata, dan R. Apiculata, dengan kerapatan mangrove tertinggi yaitu 62 ind/100m2 dan ketebalan mangrove tertinggi sepanjang 139 m. Kondisi hutan mangrove desa Pasar Banggi termasuk dalam kategori sesuai (S2) untuk kegiatan wisata berkelanjutan di Kabupaten Rembang. ABSTRACT Mangroves are plants that grow in a tidal areas an interface ecosystems between terrestrial and marine. Mangrove ecosystem in the Pasar Banggi Village,  Rembang Regency is a combination results of natural mangrove and rehabilitation. The purpose of this study were to determine condition of mangroves in the Pasar Banggi Village, Rembang, seen from the species composition, density and thickness of mangroves and to analyze the suitability level of mangrove tourism in the Pasar Banggi Village, Rembang. The method used in this study was an exploratory survey method, data collected using systematic sampling techniques. Mangrove tourism data collection was carried out of 5 variables, i.e.: type of mangrove, density of mangroves and associations of biota (from observations and comparisons of previous studies), thickness (Google Earth image October 2016), tides (data BMKG October 2016). Sampling was conducted at 3 stations, each station has 3 sampling points. The composition of mangrove species in Pasar Banggi village consists of 3 types of mangroves, namely Rhizopora stylosa, R. mucronata, and R. Apiculata, with the highest density of mangrove 62 ind / 100m2 and the highest thickness of mangrove along 139 m. The condition of mangrove forest in the Pasar Banggi village was included in the appropriate category (S2) for sustainable tourism activities in the Rembang Regency.


2020 ◽  
Vol 16 (2) ◽  
pp. 143-170
Author(s):  
Aditya Rahmawan ◽  
Eliada Herwiyanti ◽  
Siti Maghfiroh

This study aimed to examine the factors that influence the use of accounting information in SMEs. The object of research is Wig UKM in Purbalingga Regency. From this research, it can be seen how education, business scale, business age, and accounting knowledge of the use of UKM Wig accounting information in Purbalingga. The number of respondents involved in this study was 82 people. Sampling using a purposive sampling method. Based on the results of research and data analysis using SPSS it was found that: (1) educational background did not have a significant negative effect on the use of accounting information, (2) the business scale had no significant positive effect on the use of accounting information, (3) the age of the business had no significant negative effect on the use of accounting information, and (4) accounting knowledge has a significant positive effect on the use of accounting information.


ZOOTEC ◽  
2019 ◽  
Vol 39 (2) ◽  
pp. 302
Author(s):  
Elinde Yoman ◽  
M T Massie ◽  
R E.M.F Osak ◽  
J Pandey

ANALYSIS OF FARMERS' PERCEPTIONS TOWARD THE ROLE OF COUNSELING IN THE DEVELOPMENT OF PIG FARMING ON AGRIBUSINESS IN GIWAN VILLAGE, TIOM DISTRICT, LANNY JAYA REGENCY. The objective of this study was to determine farmer’s perceptons toward the role of agricultural extension agents in the development of pig livestock agribusiness for breeder’s in Giwan Village, Tiom District, Lanny Jaya Regency. This study used a survey method. Sample of group breeder wasdetermined by purposive sampling and sample of breeders was selected by simple random sampling method. The results of the study showed that: (1) Most pig farmers in Giwan village had good or high perceptions of extension workers in their roles as educators (80%), still have moderate as consultants (75%), as motivators (75%), and as organizers (80%) of farmers in providing counseling in Giwan village. The conclusion of this research was farmers in Giwan village have good perceptions of extension workers in their roles as educators, motivators, and as organizers of farmers in managing pigs' business.Keywords:  Agribusiness, Pig Farm, Extension, Giwan. 


Sign in / Sign up

Export Citation Format

Share Document