scholarly journals IDENTIFIKASI JENIS KEPITING BIOLA DI HUTAN MANGROVE DUSUN SETINGGA ASINDESA SEBUBUS KECAMATAN PALOH KABUPATEN SAMBAS

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Edy Kurniawan ◽  
M Sofwan Anwari ◽  
M Dirhamsyah
Keyword(s):  
Sampling Method ◽  
Fiddler Crab ◽  
Sandy Beaches ◽  
Mangrove Forests ◽  
Crab Species ◽  
Fiddler Crabs ◽  
Purposive Sampling ◽  
Plot Size ◽  
Uca Annulipes

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

scholarly journals Effect of Silvofishery on Ponds Nutrient Levels (Pengaruh Silvofishery Terhadap Kandungan Nutrien di Tambak)

2014 ◽  
Vol 19 (2) ◽  
pp. 81 ◽  
Author(s):  
Anna Ida Sunaryo Purwiyatno ◽  
Fitri Agustriani
Keyword(s):  
Water Quality ◽  
National Parks ◽  
National Park ◽  
Sampling Method ◽  
Phosphorus Content ◽  
Nutrient Content ◽  
Pond Water ◽  
Quality Parameters ◽  
Mangrove Forests ◽  
Purposive Sampling

Taman Nasional Sembilang merupakan salah satu taman nasional yang terletak di Sumatera Selatan dan menjadi kawasan mangrove terbesar di barat Indonesia. Sebagian besar wilayah mangrovenya telah mengalami alih fungsi menjadi tambak pasang surut. Hal ini menyebabkan timbulnya kekhawatiran kerusakan mangrove di taman nasional. Salah satu upaya untuk mempertahankan wilayah mangrove adalah dengan melakukan sistem silvofishery, yaitu penanaman mangrove dan budidaya bandeng dilakukan secara bersamaan di tambak. Penelitian ini bertujuan untuk menganalisis kualitas air dan kondisi nutrien di tambak di daerah restorasi silvofishery di Taman Nasional Sembilang. Penelitian dilakukan dengan metode purposive sampling di tambak silvofishery, tambak non-silvofishery, dan badan air sungai di seluruh wilayah taman nasional. Pengukuran dilakukan terhadap parameter kualitas air dan kandungan nutrien khususnya nitrat dan fosfat. Hasil penelitian menunjukkan bahwa kehadiran tanaman mangrove di daerah tambak mampu memperbaiki kandungan oksigen dan pH air tambak. Mangrove juga menunjukkan kemampuan dalam mengikat nitrat yang secara tidak langsung akan mencegah air tambak dari polusi. Namun, kandungan fosfat tinggi menunjukkan bahwa tanaman mangrove muda di wilayah restorasi belum mampu mengikat nutrien ini secara signifikan. Hasil penelitian ini menunjukkan bahwa hutan mangrove sangat bermanfaat bagi kegiatan budidaya tambak karena kemampuannya dalam menyerap polutan nutrient. Kata kunci: silvofishery; kolam; nitrat; fosfat; Taman Nasional Sembilang Sembilang National Park is one of the national parks which is located in South Sumatera and became the largest mangrove area in western Indonesia. Most of the mangroves area in this national park has been experiencing conversion to be tidal ponds. This has resulted in concerns on mangrove forest destruction in the park. One of the efforts to maintain mangroves area is by applying silvofishery system, which is mangrove planting and cultivation of milkfish in ponds performed simultaneously. This study aims to investigate the water quality and nutrient condition in the ponds in the area of silvofishery restoration at Sembilang National Park. The study was conducted by purposive sampling method in the silvofishery ponds, non-silvofishery ponds, and river water bodies throughout the park. Measurements conducted on water quality parameters and nutrient content, especially nitrate and phosphate. The results showed that the presence of mangrove in the ponds area is able to improve the oxygen content and pH of pond water. Mangroves also demonstrated the ability to bind nitrates which indirectly will prevent the pond water from pollution. However, the high phosphorus content showed that young mangrove plants in the restoration area have not been able to significantly bind the of this nutrient. The results of this study showed that mangrove forests are very beneficial for aquaculture activities because of its ability to absorb nutrient pollutants. Keywords: silvofishery; ponds; nitrate; phosphate; Sembilang National Park

scholarly journals Korelasi antara Kelimpahan Kepiting dengan Kerapatan Mangrove di Desa Bedono Kecamatan Sayung Kabupaten Demak Jawa Tengah

2019 ◽  
Vol 8 (3) ◽  
pp. 307-313
Author(s):  
Ardi Ristiyanto ◽  
Ali Djunaedi ◽  
Chrisna Adhi Suryono
Keyword(s):  
Sampling Method ◽  
Nursery Ground ◽  
Mangrove Forests ◽  
Spawning Ground ◽  
Purposive Sampling ◽  
Feeding Ground ◽  
Plot Sampling ◽  
Sampling Locations ◽  
Crab Abundance ◽  
Sampling Plot

ABSTRAK : Hutan mangrove memiliki fungsi ekologis sebagai tempat pemijahan (spawning ground), asuhan (nursery ground), dan mencari makan (feeding ground). Tujuan dalam penelitian ini yaitu untuk mengetahui korelasi antara kelimpahan kepiting dengan kerapatan mangrove di ekosistem mangrove Desa Bedono, Kecamatan Sayung, Kabupaten Demak. Penelitian ini bersifat deskriptif eksploratif dengan pengambilan sampel menggunakan metode kualitatif dan penentuan lokasi sampling menggunakan purposive sampling method. Lokasi penelitian dibagi menjadi tiga stasiun yaitu A (Mangrove dekat muara), B (Tracking mangrove), C (Mangrove dekat Tambak). Sampel diambil dari plot sampling 5 m x 5 m dengan tiga kali pengulangan dan tiga waktu pengulangan di setiap stasiunnya. Hasil penelitian ini ditemukan 7 jenis kepiting yang termasuk ke dalam 4 famili, diantaranya adalah Ocypodidae (Uca vocans dan Uca coarctata), Grapsidae (Metoporgapsus latifrons dan Episesarma lafondi), Varunidae (Metaplax elegans dan Pseudograpsus albus) dan Sesarmidae (Parasesarma rutilimanum). Korelasi antara kelimpahan kepiting dengan kerapatan mangrove menunjukkan bahwa semakin tinggi nilai kerapatan mangrove maka semakin tinggi juga nilai kelimpahan kepiting. Nilai kelimpahan kepiting tertinggi terdapat di stasiun A (27633 ind/ha) dan kelimpahan terendah terdapat pada stasiun B (3833 ind/ha). ABSTRACT : Mangrove forests have ecological functions as a spawning ground, nursery ground, and feeding ground. The purpose of this study is to determine the correlation of an abundance of crabs with the density of mangroves in the mangrove ecosystems of Bedono Village, Sayung District, Demak Regency. This research was descriptive explorative with sampling using qualitative methods and determining sampling locations using a purposive sampling method. The research location is divided into three stations, namely A (Mangrove near the estuary), B (Tracking mangrove), C (Mangrove near the Pond). Samples were taken from a sampling plot of 5 m x 5 m with three repetitions and three repetitions of each station. The results of this study found 7 types of crabs belonging to 4 families, including Ocypodidae (Uca vocans and Uca coarctata), Grapsidae (Metoporgapsus latifrons and Episesarma lafondi), Varunidae (Metaplax elegans and Pseudograpsus albus) and Sesarmidae (Parasesarma rutilimanum). The correlation of the abundance of crabs with mangrove density shows that the higher the value of mangrove density, the higher the abundance of crabs. The highest value of crab abundance was found in station A (27633 ind/ha) and the lowest abundance was found at station B (3833 ind/ha).

scholarly journals KEPADATAN DAN POLA PENYEBARAN PASAK BUMI (Eurycoma longifolia Jack) DI ZONA ALAMAN KUYANG, HUTAN LARANGAN ADAT KENEGARIAN RUMBIO

2016 ◽  
Vol 6 (1) ◽  
pp. 41 ◽  
Author(s):  
ZULFAHMI ZULFAHMI ◽  
NELAWATI NELAWATI ◽  
ROSMAINA ROSMAINA
Keyword(s):  
Distribution Pattern ◽  
Sampling Method ◽  
Forest Reserve ◽  
Purposive Sampling ◽  
Eurycoma Longifolia ◽  
Plot Size ◽  
Eurycoma Longifolia Jack ◽  
Morisita Index ◽  
Index Value ◽  
Made In

The objective of this research was to know the density and distribution pattern of E. longifolia in the Alaman Kuyang zone of the forest reserve of Kenegerian Rumbio. The research used purposive sampling method. The observation plot is made in square plot  which plot size was 20 x50 m.  Results of this study showed that density  of E. longifolia in Alaman Kuyang zone of forest reserve of Kenegarian Rumbio was 130 individual ha-1, which seedling phase is more dominance than  sapling and pole phases. The density of E.longifolia was low due to increasing the harvesting of this species from forest reserve of Kenegarian Rumbio, and addition poor of mother trees in area study. Distribution pattern of E. longifolia were clumped with Morisita Index value > 1, this could be explained since seed of E. longifolia dispersed and grew not far from mother trees.

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

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Efrosina Yelni Herviory ◽  
M Sofwan Anwari ◽  
Ahmad Yani
Keyword(s):  
Mangrove Forest ◽  
Sampling Method ◽  
Similarity Index ◽  
Data Retrieval ◽  
Line Transect ◽  
Mangrove Forests ◽  
Gastropod Species ◽  
Purposive Sampling ◽  
Area Data

Gastropod is a single-shelled animal that walks using stomach for their legs. Mangrove forest located Mendalok village, Sungai Kunyit sub-district, Mempawah district have pristine mangroves whose function is still maintained and is natural. The purpose of this study was to examine the diversity of Gastropoda species in Mendalok the area. Data retrieval the diversity of Gastropod species, the researchers empolyed a purposive sampling method that making each zone used 3 lines observation of each one line transect. While the three observation tracks consist of the Avicenia zone, Rhizopor zone, Bruguiera zone. The number of Gastropod individual found was 367 with 5 families and 8 species (Cerithideopsilla alata, littorina obstutata, Littorinopsis anguliferis, Littoraria melanstoma, Graciliclva costata, Casidulla aurisfelis, Ellobium aurisjudae, and Lirttoraria undulata). The research found diversity indexes in Avicennia zone = 2,98, Rhizopora zone = 3,05 and Bruguiera zone = 1,16. Especially, the highest density is in the type of Gastropod Littoraria undulata. Additionally, the dominant index is found in the Avicenia zona = 0,8562, the Rhizopora zone = 0, 5410 and Bruguiera zone = 0,4585. While the low similarity index exist in both Bruguiera zone = 28,77 % and Avicenia zone = 28,50%, and the index of type similarity is at the value of 0,1117.Keyword: Ecotourism of mangrove, Gastropods, mangrove forests.

DIVERSITY OF RED ALGAE (RHODOPHYTA) ON MANGROVE ECOSYSTEM IN EKAS VILLAGES, EAST LOMBOK DISTRICT

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Mursal Gazhali ◽  
Rika Rahmawati ◽  
Sri Puji Astuti ◽  
Sukiman Sukiman
Keyword(s):  
Red Algae ◽  
Sampling Method ◽  
Morphological Characteristics ◽  
Mangrove Ecosystem ◽  
Mangrove Forests ◽  
Terrestrial Environment ◽  
Purposive Sampling ◽  
Relationship Of ◽  
Gelidium Crinale ◽  
The Relationship

Mangrove ecosystem is a unique ecosystem with a mix of marine and terrestrial environment. Mangrove forests provide food and nutrients for other organisms such as fish, crustaceans, and algae. Red algae play an important role in maintaining the balance of ecosystems and food chains. This study aims to determine the types, morphological characteristics and key identification, the relationship of red algae types and substrate types to the ecosystem of mangrove forest in Dusun Ekas. This research is explorative descriptive by using purposive sampling method at 5 stations. Based on the results of the red algae study obtained as many as 14 species are: Bostrychia sp., B. radicans, B. tenella, Chondria sp., Laurencia sp., Polysiphonia sp., Murrayella sp., C. Leprieurii, C. Monostica, Gelidium sp ., Gelidium crinale, Catenella caespitosa, Catenella nippae and Catenella sp. Characteristics of the talus were found to have a cylindrical talus and some like leaves (blade). Red algae (Rhodophyta) found more in the station that dominated by Soneratia alba species. Ekosistem mangrove merupakan ekosistem yang unik dengan perpaduan pengaruh lingkungan laut dan daratan. Hutan mangrove menyediakan sumber makanan dan nutrisi untuk organisme lain seperti ikan, crustacea, dan alga. Alga merah berperan penting  menjaga keseimbangan ekosistem dan rantai makanan. Penelitian ini bertujuan untuk mengetahui jenis-jenis, ciri morfologi dan kunci identifikasi, hubungan jenis alga merah dan jenis substratnya pada ekosistem hutan mangrove di Dusun Ekas. Penelitin ini bersifat deskriptif eksploratif dengan menggunakan  metode purposive sampling pada 5 stasiun. Berdasarkan hasil penelitian alga merah yang diperoleh sebanyak 14 spesies yaitu: Bostrychia sp., B. radicans, B. tenella, Chondria sp., Laurencia sp., Polysiphonia sp., Murrayella sp., C. Leprieurii, C. Monostica, Gelidium sp., Gelidium crinale, Catenella caespitosa, Catenella nippae dan Catenella sp. Karakteristik talus yang ditemukan ada yang memiliki talus silindris dan ada yang seperti daun (blade). Alga merah (Rhodophyta) yang ditemukan lebih banyak pada stasiun yang memiliki mangrove jenis Soneratia alba. 

scholarly journals Kepadatan Populasi Ikan Gelodok Di Hutan Mangrove Desa Penunggul Kecamatan Nguling Kabupaten Pasuruan

2020 ◽  
Vol 5 (2) ◽  
pp. 66-71
Author(s):  
Moch. Chasan Basri ◽  
Hari Santoso ◽  
Saimul Laili
Keyword(s):  
Environmental Conditions ◽  
Mangrove Forest ◽  
Sampling Method ◽  
Abiotic Factors ◽  
Mangrove Ecosystem ◽  
Northern Coast ◽  
Mangrove Forests ◽  
Purposive Sampling ◽  
Mangrove Area ◽  
The One

  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    

ENGARUH PEMAHAMAN AKUNTANSI DAN KETENTUAN PERPAJAKAN SERTA TRANSPARANSI DALAM PAJAK TERHADAP KEPATUHAN WAJIB PAJAK ORANG PRIBADI USAHAWAN PADA UKM DI YOGYAKARTA

MODUS ◽  
2016 ◽  
Vol 27 (1) ◽  
pp. 41 ◽  
Author(s):  
Sumianto Sumianto ◽  
Ch Heni Kurniawan
Keyword(s):  
Tax Policy ◽  
Sampling Method ◽  
Tax Compliance ◽  
Likert Scale ◽  
Multiple Regressions ◽  
Purposive Sampling ◽  
Analysis Tools ◽  
Survey Approach

This study aims to determine the efect of understanding of accounting and tax provisions and the tax transparency on tax compliance. This research was conducted on individual taxpayers SMEs in Yogyakarta. This study used a survey approach as collecting data method. The sample in this study was taken using purposive sampling method. Subjects in this study are individual taxpayers, particularly SMEs in Yogyakarta. Multiple regressions with Likert scale measurement were used as the analysis tools. One hundred respondents individual taxpayers entrepreneurs, especially SMEs in Yogyakarta were used as the respondents and the fnding of this study is that the understanding of the accounting and tax provisions comprehension positive efect on tax compliance. Researchers also found that transparency does not afect the taxpayer compliance.Key Words : Accounting Comprehension , Tax Policy, Transparency, Compliance

Pengaruh Ukuran Perusahaan, Profitabilitas, Solvabilitas, dan Ukuran Kantor Akuntan Publik terhadap Audit Delay

2018 ◽  
Vol 9 (2) ◽  
pp. 33-49
Author(s):  
Karina Harjanto
Keyword(s):  
Data Analysis ◽  
Linear Regression ◽  
Real Estate ◽  
Multiple Linear Regression ◽  
Sampling Method ◽  
Secondary Data ◽  
Financial Reports ◽  
Accounting Firm ◽  
Purposive Sampling ◽  
Sample Data

The purpose of this research is to examine the effect of company’s size, profitability, solvability, and the size of the accounting firm towards audit delay. The object in this research are property and real estate companies listed in Bursa Efek Indonesia (BEI) for the period 2013-2015. The sample is selected by purposive sampling method. There are 42 companies selected as sample. Data used in this research is a secondary data such as audited financial reports. Data analysis uses multiple linear regression. The result of this research shows that company’s size, profitability, and solvability have no influence on audit delay, while the size of accounting firm has significant positive influences on audit delay. The result also shows that company’s size, profitability, solvability, and the size of of the accounting firm simultaneously influence audit delay. Keywords: audit delay, company’s size, profitability, solvability, size the accounting firm

PENGARUH UMUR PERUSAHAAN, LIKUIDITAS DAN PROFITABILITAS TERHADAP KETEPATAN WAKTU PENYAMPAIAN LAPORAN KEUANGAN “(TIMELINESS)”

Equity ◽  
2015 ◽  
Vol 18 (1) ◽  
pp. 71
Author(s):  
Retna Sari
Keyword(s):  
Sampling Method ◽  
Stock Exchange ◽  
Financial Report ◽  
Purposive Sampling

This research was conducted to examine the effect age of company, likuidity and profitability to timeliness in the submission of the financial report of manufacturing in Indonesia Stock Exchange period 2012. Sample that as many as 92 companies. Sample determination technique using purposive sampling method. Hypotesis testing using a logistic anlysis. The result showed that all variables are not significantly to the timeliness. 

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