scholarly journals STRUKTUR KOMUNITAS IKAN PADA EKOSISTEM LAMUN DI PANTAI PUDING KABUPATEN BANGKA SELATAN

2018 ◽  
Vol 12 (2) ◽  
pp. 35-44
Author(s):  
Sania Prisilia ◽  
Wahyu Adi ◽  
Arief Febrianto
Keyword(s):  
Strong Relationship ◽  
Data Retrieval ◽  
Line Transect ◽  
Thalassia Hemprichii ◽  
Seagrass Meadows ◽  
Gill Net ◽  
Seagrass Ecosystems ◽  
Halodule Uninervis ◽  
Relationship Of ◽  
Seagrass Density

Seagrass beds have a variety of roles in fish life, which can be used as nurseries, as a place for feeding ground, and for areas to seek protection. This study aims to analyze the structure of fish communities and seagrass communities and analyze the relationship of fish abundance with seagrass ecosystems. This research was conducted in March 2018 on the beach of Puding Air Banten II, Pasir Putih Village, Tukak Sadai District, Bangka Selatan Regency. Line transect method for seagrass data collection and fish data retrieval using fixed gill nets (gill net). The results of the study found that the total number of individual fish as much as 409 ind / m2 consisted of 25 species. The highest abundance of fish found in Station I with Ambassis interrupta species as many as 241 ind / m2. There were six types of seagrass found on the coast of Puding, namely Enhalus acoroides, Thalassia hemprichii, Halodule uninervis, Halophila spinulosa, Halophila decipiens and Cymodocea serrulata. The highest seagrass density was found at Station I with the seagrass Halodule uninervis species of 2541 ind / m2. Correlation coefficient analysis shows that the abundance of fish with seagrass density has a significant value of 0.956 which is classified as having a very strong relationship. Fish have higher abundance with seagrass meadows which vegetate with mangroves

scholarly journals Relationship of Distribution Seagrass Species with Dugong (Dugong dugon) Sighting at Liki Island-Papua

Omni-Akuatika ◽  
2019 ◽  
Vol 15 (2) ◽  
pp. 92
Author(s):  
Aditya Hikmat Nugraha ◽  
Ilham Antariksa Tasabaramo ◽  
Udhi E Hernawan ◽  
Susi Rahmawati ◽  
Andri Irawan ◽  
...  
Keyword(s):  
Line Transect ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Halophila Ovalis ◽  
Seagrass Ecosystem ◽  
Island Station ◽  
Halodule Uninervis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Relationship Of

Dugong dugon is a herbivorous marine mammal. One of Dugong's favorite foods is seagrass. This study examines the distribution of seagrass species to dugong sighting in Liki Island. The study was conducted in November 2018. Observation of seagrass conditions was carried out using a line transect method and a 50x50 cm transect with a distance interval between 10 m plots. Interviews were also conducted with the community to find out the location of Dugong presence in Liki Island. There are seven species of seagrass found in Liki Island :Enhalus acoroides, Cymodocea rotundata, Thalassia hemprichii, Halophila ovalis, Halodule uninervis, Halodule pnifolia and Syringodium isoetifolium spread over four observation stations. The results showed that  Dugong in Liki Island is often found during the eastern season, they often appear in seagrass ecosystem area to do eating activities. Dugong is often found in the eastern part of Liki Island (Station 4) and sometimes also found in the western part of Liki Island (Station 3).Keywords:biodiversity,Dugong dugon, liki, papua, seagrass

scholarly journals KELIMPAHAN TERIPANG (HOLOTHUROIDEA) BERDASARKAN KERAPATAN LAMUN DI PANTAI PRAWEAN DESA BANDENGAN, JEPARA Sea Cucumber(Holothuroidea) Abundance Based on Seagrass Density in Prawean Beach Bandengan Village, Jepara

2020 ◽  
Vol 8 (4) ◽  
pp. 337-346
Author(s):  
Mahalani Jati Laksana ◽  
Bambang Sulardiono ◽  
Anhar Solichin
Keyword(s):  
Sediment Core ◽  
Sea Cucumber ◽  
Linear Regression Analysis ◽  
Strong Relationship ◽  
Sea Cucumbers ◽  
Purposive Sampling ◽  
Seagrass Ecosystems ◽  
Relationship Of ◽  
The Relationship ◽  
Seagrass Density

Teripang (Holothuroidea) hidup sebagai hewan bentik pada ekosistem terumbu karang dan asosiasinya, di antaranya adalah ekosistem padang lamun. Padang lamun menyediakan nutrient bagi pertumbuhan mikro yang berfungsi sebagai makanannya, sehingga ekosistem padang lamun menyediakan habitat yang baik bagi teripang. Penelitian ini dilakukan pada bulan Mei 2019 di Pantai Prawean Desa Bandengan, Jepara. Tujuan dari penelitian ini adalah untuk mengetahui kelimpahan teripang dengan tingkat kerapatan lamun yang berbeda, mengetahui jenis sedimen beserta bahan organik yang terkandung pada sedimen, dan mengetahui hubungan kelimpahan teripang dengan kerapatan lamun. Metode yang digunakan dalam pengambilan sampel teripang dan perhitungan kerapatan lamun yaitu purposive sampling dengan teknik garis dan transek. Pengambilan sedimen menggunakan sediment core. Hasil dari penelitian menunjukan pada Stasiun 1 (kerapatan padat) yaitu 33 individu meliputi 25 individu H. atra dan 8 individu H. scabra. Stasiun 2 (kerapatan sedang) yaitu 13 individu meliputi 10 individu H. atra dan 3 individu H. scabra. Stasiun 3 (kerapatan jarang) yaitu 5 individu meliputi 4 individu H. atra dan 1 individu H. scabra. Kandungan bahan organik pada lokasi penelitian berkisar 7,25-13,15% dengan fraksi sedimen berupa pasir halus. Hasil analisis regresi linear sederhana dari hubungan kelimpahan teripang dengan kerapatan lamun didapatkan persamaan y = 0,0091x – 2,2275. Nilai korelasi (r) yang didapatkan yaitu 0,80 menunjukan hubungan yang kuat dan nilai determinasi (R2) yaitu 0,641 yang berarti bahwa 64,1% kelimpahan teripang dipengaruhi oleh kerapatan lamun. Sea cucumbers (Holothuroidea) live as benthic animals in coral reef ecosystems and their associations, among them are seagrass ecosystems. Seagrass beds provide nutrients for micro-growth that function as food, so seagrass ecosystems provide good habitat for sea cucumbers. This research was conducted in May 2019 at Prawean Beach Bandengan Village, Jepara. The purpose of this study was to determine the abundance of sea cucumbers with different seagrass density levels, determine the type of sediment and organic material contained in the sediment, and determine the relationship of sea cucumber abundance with seagrass density. The method used in cucumber sea taking and seagrass density calculation is purposive sampling with line and transect techniques. Intake of sediment using sediment core. The results of the study showed at Station 1 (solid density) that is 33 individuals including 25 individuals of H. atra and 8 individuals of H. scabra. Station 2 (medium density) is 13 individuals including 10 individuals of H. atra and 3 individuals of H. scabra. Station 3 (rare density) is 5 individuals including 4 H. atra individuals and 1 H. scabra individual. The content of organic matter in the study area ranged from 7.25 to 13.15% with a sedimentary fraction in the form of fine sand. The results of simple linear regression analysis of the relationship of sea cucumber abundance with seagrass density obtained the equation y = 0.0091x - 2.2275. Correlation value (r) obtained is 0.80 showing  a strong relationship and the value of determination (R2) is 0.641 which mean that 64,1% sea cucumber abundance is influenced by seagrass density.  

scholarly journals The Relationship of Megazoobenthos Association with Seagrass Ecosystem Conditions in Ujung Genteng Waters, Sukabumi

2020 ◽  
pp. 1-10
Author(s):  
Gilang Primanagita Rachman ◽  
Indah Riyantini ◽  
Zahidah Hasan ◽  
Herman Hamdani
Keyword(s):  
Diversity Index ◽  
Close Association ◽  
Strong Relationship ◽  
Survey Method ◽  
Association Pattern ◽  
Seagrass Ecosystem ◽  
Relationship Of ◽  
The Relationship ◽  
Seagrass Density ◽  
Diadema Setosum

Seagrass beds in Ujung Genteng waters are one of the shallow marine ecosystems that have relatively high biodiversity. Seagrass ecosystem as one of the coastal ecosystems in these waters has a diversity of marine life that is associated with it. The purpose of this study was to establish the association pattern and the correlation of mega zoobenthos to seagrass ecosystem conditions. The method used was a survey method by conducting a survey direct observation of the stations that have been determined.  Three seagrass species were identified, namely: Thallasia hemprichii, Cymodoceae rotundata and Enhalus acoroides. The highest density of seagrass was found in station 2 with the type of seagrass Thallasia hemprichii as much as 207 ind/m2. Fifteen mega zoobenthos species were identified representing 3 phyla. Species Mega zoobenthos which is most commonly found in Ujung Genteng waters is Ophiothrix fragilis, Ophiocoma erinaceus, and Diadema setosum. The mega zoobenthos Diversity Index at the observation station is included in the medium category that is 2.33-2.66 and the evenness index is 0.63-0.84. Correlation of seagrass density with mega zoobenthos obtained by 0.92 shows that there is a very strong relationship between seagrass density with mega zoobenthos. The result shows that there are 4 patterns of close association and 2 patterns of very close association. Ophiocoma erinaceus of the ophiuroidea class has a pattern of very close positive associations with seagrass Cymodoceae rotundata and Dendrodoris sp of the order nudibranchia has a pattern of very close negative associations with seagrass Cymodoceae rotundata.

scholarly journals PENGARUH KERAPATAN LAMUN Thalassia hemprichii TERHADAP KELIMPAHAN BAKTERI HETEROTROF DI PANTAI PRAWEAN, JEPARA

2018 ◽  
Vol 7 (4) ◽  
pp. 415-422
Author(s):  
Isnaini Dian Yunita ◽  
Niniek Widyorini ◽  
Supriharyono Supriharyono
Keyword(s):  
Heterotrophic Bacteria ◽  
Nutrient Cycle ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Seagrass Ecosystem ◽  
Halodule Uninervis ◽  
Cymodocea Rotundata ◽  
Economic Function ◽  
Seagrass Density

Ekosistem lamun merupakan salah satu ekosistem yang memiliki kompleksitas dan keanekaragaman hayati yang tinggi. Padang lamun merupakan hamparan vegetasi lamun yang menutupi suatu kawasan pesisir. Selain memiliki fungsi ekonomi, lamun juga memiliki fungsi ekologis yakni berperan penting sebagai pendaur zat hara oleh mikroorganime yaitu bakteri. Penelitian ini bertujuan untuk mengetahui kerapatan lamun, kelimpahan bakteri heterotrof yang berasosiasi dengan lamun serta pengaruh kerapatan lamun dengan kelimpahan bakteri heterotrof di Pantai Prawean, Jepara. Metode yang digunakan yakni deskriptif eksplanatif dengan pengambilan sampel secara purposive dan dianalisis dengan IBM SPSS Statistic 22. Jenis lamun yang ditemukan di Pantai Prawean ada 5 (lima): Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Halodule uninervis dan Halodule pinifolia. Kerapatan tertinggi didapat dari jenis Thalassia hemprichii sebesar 78 Ind/m2 dan terendah adalah Enhalus acoroides 10 Ind/m2 dan kelimpahan bakteri heterotrof tertinggi diperoleh dari tingkat kerapatan rapat di stasiun 3 yakni 29,4x108 Upk/ml dan kelimpahan terendah diperoleh dari tingkat kerapatan jarang di stasiun 2 yakni 3,3x108 Upk/ml. Korelasi antara kerapatan lamun dengan kelimpahan bakteri heterotrof tinggi atau kuat yakni 0,896 dan korelasi ini dinyatakan sangat signifikan terbukti nilai sig. 0,001 dengan tingkat kesalahan 0,1%. Artinya bertambahnya kerapatan lamun dapat meningkatkan pula kelimpahan bakteri heterotrof. Seagrass ecosystem is one ecosytems that has high complexity and biodiversity. Seagrass beds are a stretch of seagrass vegetation that covers a coastal area. Beside its economic function, seagrass also have ecological function that play an important role of nutrient cycle for microorganism its bacteria. This study aims to determine the density of seagrass, the abundance of heterothropic bacteria and influence of seagrass density with abundance of heterotrophic bacteria at Prawean beach, Jepara. The method used in this study is descriptive explanative with purposive sampling and the data analyzed by IBM SPSS Statistic 22. There are 5 (five) species of seagrass that can be found in Prawean beach: Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Halodule uninervis and Halodule pinifolia. The highest density obtained from Thalassia hemprichii species is 78 sprouts of seagrass/m2 and the lowest density obtained from Enhalus acoroides is 10 obtained from seagrass density at station 3 its value 29,4x108Cfu/ml and the lowest abundance of heterotrophic bacteria was obtained from rare seagrass at station 2 its value 3,3x108Cfu/ml.  The corelation between seagrass density with abundance heterotrophic bacteria is high or strong that has value 0,846 and this correlation is very significantly proven has sig value 0,001 with error rate 0,1%, it can be conclude that increase of seagrass density can also increase the abundance of heterotrophic bacteria.  

scholarly journals KERAPATAN DAN DISTRIBUSI LAMUN (SEAGRASS) BERDASARKAN ZONA KEGIATAN YANG BERBEDA DI PERAIRAN PULAU PRAMUKA, KEPULAUAN SERIBU

2012 ◽  
Vol 1 (1) ◽  
pp. 44-50
Author(s):  
Fiki Feryatun
Keyword(s):  
Thalassia Hemprichii ◽  
Marine Animals ◽  
Natural Zone ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
Halodule Uninervis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Cymodocea Serrulata ◽  
Seagrass Density

Lamun merupakan tumbuhan yang beradaptasi penuh untuk dapat hidup di lingkungan laut. Ekosistem lamun berperan penting di wilayah pesisir karena menjadi habitat penting untuk berbagai jenis hewan laut seperti ikan, moluska, crustacea, echinodermata. Penelitian yang dilakukan pada bulan April 2012 di Perairan Pantai Pulau Pramuka bertujuan untuk mengetahui komunitas lamun (jenis, kelimpahan, penutupan) dan distribusinya di berbagai zona di Perairan Pantai Pulau Pramuka, Kepulauan Seribu. Sampling dilakukan di tiga stasiun, yakni stasiun 1 (zona alami), stasiun 2 (zona pemukiman) dan stasiun 3 (zona resort wisatawan) menggunakan kuadran transek. Hasil yang didapatkan 7 jenis lamun yaitu Cymodocea rotundata, Cymodocea serrulata, Enhalus acoroides, Halodule uninervis, Halophila ovalis, Thalassia hemprichii dan Syringodium isoetifolium. Kerapatan lamun yang tertinggi diperoleh di stasiun 1 yaitu 1.620 individu/15m2. Berdasarkan Keputusan Menteri Negara Lingkungan Hidup No. 20 Tahun 2004 bahwa stasiun 1 (zona alami) dengan persentase penutupan 68% masuk kedalam kondisi sehat (penutupan > 60%), sedangkan untuk stasiun 2 (zona pemukiman) dan 3 (zona resort) dengan persentase masing-masing 59% dan 48% masuk dalam kategori kondisi kurang sehat (penutupan 30-59,9%). Pola sebaran (distribusi) lamun pada stasiun 1 mengelompok (cluster) dan seragam (uniform) untuk stasiun 2 dan 3, dengan demikian ada pengaruh dari kegiatan manusia terhadap komunitas lamun.Kata kunci : Lamun, Kerapatan dan Distribusi, Zona kegiatanAbstractSeagrasses are plants adapted to live fully in the marine environment. Seagrass plays an important role in coastal areas due to critical habitat for many kinds of marine animals such as fish, mollusks, crustaceans, echinoderms. The research was conducted on April 9 to 22, 2012 at Pramuka Island Coastal Waters in order to know seagrass community (type, abundance, coverage) distribution in different activity zones. The method used transect quadrates in three stations, namely stations 1 (natural zone), station 2 (residential zone) and station 3 (tourist resort zone). The results obtained 7 seagrass species that was of Cymodocea rotundata, Cymodocea serrulata, Enhalus acoroides, Halodule uninervis, Halophila ovalis, Thalassia hemprichii and Syringodium isoetifolium. The highest seagrass density was in station 1 the total 1620 individuals/15m2. Based on the Ministry of Environment No. 20 In 2004 the station 1 (natural zone) was in healthy condition (coverage > 60%), while for station 2 (residential zone) and 3 (resort zone) were in the category of unhealthy conditions (coverage 30 to 59,9%). The pattern of distribution of seagrass at stations 1 was clumped, however distribution it was cluster at station 2 and 3, thus there is the influence of human activities on seagrass communities.Keywords : Seagrass, Density and Distribution, Activity zones

scholarly journals Population Analysis (Total Weight, CaCO3 Total Weight and Segment Numbers) of Halimedaopuntia (Linn.) Lamouroux in Tongkeina Waters, Manado

2016 ◽  
Vol 3 (2) ◽  
pp. 68
Author(s):  
Kristianto Parera ◽  
Rene Charles Kepel ◽  
Alex D. Kambey
Keyword(s):  
Regression Analysis ◽  
Population Analysis ◽  
Strong Relationship ◽  
Total Weight ◽  
Line Transect ◽  
Caco3 Content ◽  
Wet Weight ◽  
Line Transects ◽  
Relationship Of ◽  
The Relationship

This study were aiming to know the biological aspects of H. opuntia in term of its total wet weight, CaCO3total weight and segment numbers and relationship of segment numbers with total weight (wet and CaCO3 content). Data collection was conducted in June, 2015 and samples were taken during the day light during the low tides. Line transect and quadrate of 1 x 1 meter were used in this study. In total there are 3 line transects of50 meter in length with 25 meter distant apart of each transect and were deployed perpendicular toward coastal line. To reveal the variation on total wet weight, CaCO3 wet content and segment numbers the data were plotted on bar diagram. The regression analysis and analysis of variance also were used to reveal the relationship among the parameters measured. The result of the study are as follow:  total individuals are 215 with composition of 76 individuals in transect 1; 66 individuals in transect 2 and 73 individuals in transect 3; total wet weight: 1,259.429 gram;  total weight of CaCO3: 354.551 gram; and segment numbers 82.580. The result of regression analysis shows that there is a strong relationship between number of segment and CaCO3 wet content. Keyword : Population Analysis, Halimeda opuntia   ABSTRAK   Tujuan dari penelitian ini adalah untuk mengetahui berat basah total, berat kapur total dan  jumlah segmen total serta hubungan jumlah segmen total dengan berat basah total dan hubungan jumlah segmen total dengan berat kapur total dari Halimeda opuntia. Penelitian ini dilakukan di perairan Tongkaina Kota Manado pada bulan Juni 2015.  Pengambilan sampel dilakukan pada siang hari pada saat keadaan air laut surut dengan menggunakan metode transek dan kuadrat dengan ukuran 1 x 1 meter.  Pengambilan sampel dibagi atas 3 transek dengan masing-masing transek terdiri dari 10 kuadrat dengan panjang transek masing-masing 50 m, jarak antara transek dengan lainnya 25 m dan jarak antara titik kuadrat dengan lainnya 5 m. Untuk melihat variasi ukuran berat basah total, jumlah segmen total dan berat kapur total pada sampel dari lokasi penelitian tersebut, maka dibuat diagram batang, analis hubungan dan analisis keragaman.  Hasil penelitian diperoleh 215 individu masing-masing 76 individu (transek 1), 66 individu (transek 2) dan 73 individu (transek 3).  Jumlah berat basah total yang dihitung adalah 1.259,429 gram, berat kapur total  354,551 gram dan jumlah segmen total 82.580 segmen. Hasil analisis regresi hubungan jumlah segmen menunjukan bahwa hubungan kedua variabel tersebut memiliki hubungan yang sangat kuat dan analisis regresi hubungan jumlah segmen total dan berat kapur total memiliki hubungan yang kuat. Kata kunci: Analisis Populasi, Halimeda opuntia 1Mahasiswa Program Studi MSP FPIK-UNSRAT 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi

Perbandingan Perifiton pada Thalassia hemprichii dan Cymodocea rotundata di Perairan Teluk Awur, Jepara

2021 ◽  
Vol 10 (2) ◽  
pp. 225-232
Author(s):  
Chandra Nicolas Sihaloho ◽  
Nur Taufiq ◽  
Hadi Endrawati
Keyword(s):  
Sampling Method ◽  
Distribution Patterns ◽  
Survey Method ◽  
Line Transect ◽  
Sweep Method ◽  
Thalassia Hemprichii ◽  
Cymodocea Rotundata ◽  
Total Observation ◽  
Morisita Index ◽  
Seagrass Density

Keanekaragaman jenis lamun dan struktur morfologi yang cukup besar pada Thalassia hemprchii dan Cymodocea rotundata memungkinkan ditumbuhi perifiton yang dapat meningkatkan produktivitas primer. Penelitian ini bertujuan untuk mengetahui kelimpahan perifiton pada T. hemprichii dan C. rotundata di Perairan Teluk Awur, Jepara. Penelitian dilaksanakan pada Bulan Juli 2020 menggunakan metode survei dan penentuan lokasi dipilih dengan menggunakan metode purposive random sampling, sedangkan metode pengambilan data lamun dengan metode line transect quadrant yang mengacu pada metode LIPI. Pengambilan daun lamun untuk pengamatan perifiton menggunakan metode sapuan daun yang selanjutnya diamati dengan menggunakan metode sensus yaitu pengamatan total dengan alat sedgwick rafter di bawah mikroskop. Nilai kelimpahan perifiton pada daun lamun T. hemprichii sebesar 27.635 ind/cm2. Sedangkan kelimpahan perifiton pada daun lamun C. rotundata sebesar 23.015 ind/cm2. Kelimpahan tertinggi perifiton terdapat pada jenis lamun Thalassia hemprichii, hal ini diduga karena Thalassia hemprichii mempunyai penampang daun yang lebih lebar. Perifiton yang mendominasi di Perairan Teluk Awur berasal dari Kelas Bacillariophyceae, diduga karena kelas ini memiliki kemampuan melekat pada substrat yang baik. Berdasarkan perhitungan Indeks Morisita maka diketahui bahwa sebaran perifiton di Perairan Teluk Awur didominasi pola sebaran mengelompok. Kelimpahan perifiton dengan kerapatan lamun di Perairan Teluk Awur memiliki hubungan cukup erat.The considerable diversity of seagrass species and morphological structures in Thalassia hemprchii and Cymodocea rotundata allows the growth of periphyton which can increase primary productivity. This study aims to determine the abundance of periphyton and its distribution patterns in the waters of Teluk Awur, Jepara. The study, which was conducted in July 2020, used a survey method and the location was selected using the purposive sampling method, while the seagrass data collection method used the line transect quadrant method which refers to the LIPI method. Seagrass leaves were collected for periphyton observations using the leaf sweep method, which was observed using the census method, namely total observation using the sedgwick rafter under a microscope. The abundance value of periphyton in Thalassia hemprichii seagrass leaves was 27,635 ind/cm2. While the abundance of periphyton in seagrass leaves of Cymodocea rotundata was 23,015 ind/cm2. The highest abundance of periphyton is found in the type of seagrass T. hemprichii, this is presumably because T. hemprichii has a wider leaf cross section. The dominant periphyton in Teluk Awur waters comes from the Bacillariophyceae class, presumably because this class has good adherence to the substrate. Based on the calculation of the Morisita Index, it is known that the distribution of periphyton in the waters of Teluk Awur, Jepara is dominated by a clustered distribution pattern. The abundance of periphyton and seagrass density on Parang Island is closely related.

HUBUNGAN KEPADATAN BIVALVIA DENGAN PARAMETER LINGKUNGAN DI PESISIR TANJUNG PURA KABUPATEN BANGKA TENGAH

2020 ◽  
Vol 13 (2) ◽  
pp. 112-121
Author(s):  
Sudiyar . ◽  
Okto Supratman ◽  
Indra Ambalika Syari
Keyword(s):  
Negative Impact ◽  
Principal Component ◽  
Environmental Parameters ◽  
Data Retrieval ◽  
Distribution Patterns ◽  
Random System ◽  
System Method ◽  
Relationship Of ◽  
The Relationship ◽  
Anadara Granosa

The destructive fishing feared will give a negative impact on the survival of this organism. This study aims to analyze the density of bivalves, distribution patterns, and to analyze the relationship of bivalves with environmental parameters in Tanjung Pura village. This research was conducted in March 2019. The systematic random system method was used for collecting data of bivalves. The collecting Data retrieval divided into five research stasions. The results obtained 6 types of bivalves from 3 families and the total is 115 individuals. The highest bivalve density is 4.56 ind / m², and the lowest bivalves are located at station 2,1.56 ind / m²,  The pattern of bivalve distribution in the Coastal of Tanjung Pura Village is grouping. The results of principal component analysis (PCA) showed that Anadara granosa species was positively correlated with TSS r = 0.890, Dosinia contusa, Anomalocardia squamosa, Mererix meretrix, Placamen isabellina, and Tellinella spengleri were positively correlated with currents r = 0.933.

Pengaruh Penghargaan Terhadap Kinerja Karyawan pada CV. Dino Manunggal Karsa Bogor

2019 ◽  
Vol 4 (2) ◽  
pp. 17
Author(s):  
Dedy Mulyadi ◽  
Didik Purwanto
Keyword(s):  
Linear Regression ◽  
Performance Assessment ◽  
Correlation Coefficient ◽  
Linear Regression Analysis ◽  
Strong Relationship ◽  
Simple Linear Regression ◽  
New Employees ◽  
Company Policy ◽  
Effective Manner ◽  
Relationship Of

The question of compensation in addition to sensitive to be driving someone to worl due to an effect on morale and discipline employees. Therefore , any  agency or any organization should be able to provide compensation equal to the workload  to create a workforce that efficient and effective manner can be realized. Amaore than that, the company’s goal to improve performance. Performance assessment is a subjective process that involves human judgments. Thus, performance assessment is very likely wrong and very easily influonced by sources that are not actual, so it must be taken into account and considered reasinable. Frformance appraisals are considered  to meet the target if it has a good impact on new employees who rated their performance. Simple linear regression analysis using SPSS version 12:00 data processing obtained tegression equation Y = 0,487 X 74 + with an explanation of X = award, 74 = constant, 0.487 = coefficient awards, and Y = performance based on simple linear regression equation in case of increase of one unit of the  performance award will be increased 0.487 units. If company policy negates the performance award will remain at a constant rate (74) units . (A) Test results obtained thitung significant constants of (12.574) > t table for (1.960 then reject Ho constanta significant meaning. (B) significant Test award coefficient t count the results obtained by (2.164)> t table foe (1.96) then reject Ho the mean coeffent of appreciation affect the performance . (C) correlation coefficient analysis is done by calculating the product moment corration (pearson)  to test  whether or not a strong  relationship between the variables X  dan Y , based on the results of cakculations with SPSS  table valuse obtained by calculating the  correlation coefficient r (0.3100> r on the table for a = 0,05 (0.291) then reject Ho, which means there is a relationship of respect for performance. When we enter these valuse in the table shows the interpretation of the correlation coefficient between the interval from 0.20 to 0.399 which has a low relationship

Kestabilan Habitat Lamun Ditinjau Dari Komposisi dan Kepadatan Jenis

2012 ◽  
Vol 8 (1) ◽  
Author(s):  
Paskalina Th. Lefaan
Keyword(s):  
Line Transect ◽  
Seagrass Habitat ◽  
Pioneer Species ◽  
Thalassia Hemprichii ◽  
Climax Species ◽  
Halophila Ovalis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Cymodocea Serrulata ◽  
Stable Habitat

<em>Seagrasses habitats have both physical and ecological functions that support adjacent waters qualities and its dwelling organisms. There are varies of pressure on seagrass environmental, especially due to people activities that could decrease its function and habitat stabilities. The study aimed to determine about seagrass habitat stabilities from its species composition and/or densities. Line transect-plots and exploration methods were used in five locations of Manokwari coastal waters, that were, Andai, Rendani, Wosi, Briosi, and Tanjung Manggewa. There are five pioneer species (Cymodocea rotundata, Halodule pinifolia, H. uninervis, Syringodium isoetifolium, Halophila ovalis) and 3 climax species (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii). The pioneer only found in Andai and Wosi, however both pioneer and climax encountered in three other locations. In Rendani and Tanjung Manggewa higher density of climax species (T. hemprichii) were 617.7 and 828.0 stands m-2, respectively, although in Briosi the higher pioneer (C. rotundata) of 570.7 stands m-2. These conditions showed that seagrass habitat in Rendani and Tanjung Manggewa are more stable compared to Briosi, as well as Andai and Wosi. It concluded that pioneer species found in newly formed habitat or disturbed, on the other hand, climax in more stable habitat.</em>

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