scholarly journals Recent Sedimentation Rate and Sediment Ages Determination of Kemaman-Chukai Mangrove Forest, Terengganu, Malaysia

2008 ◽  
Vol 3 (3) ◽  
pp. 522-525 ◽  
Author(s):  
B.Y. Kamaruzzam ◽  
M.C. Ong
Keyword(s):  
Sedimentation Rate ◽  
Mangrove Forest

scholarly journals PENGARUH KERAPATAN MANGROVE TERHADAP LAJU SEDIMENTASI DI DESA BEDONO DEMAK (The Effect of Mangrove Density on Sedimentation Rate in Bedono Village, Demak)

2018 ◽  
Vol 6 (4) ◽  
pp. 536-545
Author(s):  
Yuni Harvesty Sihombing ◽  
Max Rudolf Muskananfola ◽  
Churun A’in
Keyword(s):  
Sedimentation Rate ◽  
Mangrove Forest ◽  
Sediment Traps ◽  
Sampling Location ◽  
Time Interval ◽  
Average Value ◽  
Mangrove Vegetation ◽  
Mangrove Roots ◽  
The Relationship

Mangrove di kawasan perairan Bedono, Kecamatan Sayung, Demak dimanfaatkan masyarakat untuk memenuhi kebutuhan hidupnya melalui alih fungsi lahan mangrove menjadi tambak, permukiman, industri, dan penebangan oleh masyarakat untuk berbagai kepentingan, sehingga mengurangi daya tangkap akar mangrove sebagai pemerangkap sedimen. Penelitian ini bertujuan untuk mengetahui pengaruh kerapatan mangrove terhadap laju sedimentasi. Penelitian dilaksanakan pada April 2017 di kawasan hutan mangrove Desa Bedono. Penentuan lokasi sampling dilakukan dengan melakukan beberapa kali observasi/studi pendahuluan. Observasi dilakukan dengan cara mencari tiga stasiun vegetasi mangrove dengan kerapatan yang berbeda yaitu rapat, sedang dan jarang. Pada tiap-tiap stasiun terdapat 3 titik pengambilan sampel. Pengambilan ­sampel dilakukan sebanyak 3 kali dengan interval waktu 2 minggu. Hasil penelitian menunjukkan bahwa laju sedimentasi paling tinggi terdapat pada stasiun I titik 3 dengan nilai rata-rata 30,935 mg/cm2/hari dimana pada lokasi ini memiliki kerapatan mangrove yang paling rendah yaitu 600 pohon/ha sedangkan nilai laju sedimentasi paling rendah terdapat pada stasiun III titik 2 dengan nilai rata-rata 4,891 mg/cm2/hari dimana pada lokasi ini memiliki kerapatan paling tinggi yaitu 3100 pohon/ha. Hubungan kerapatan mangrove dan laju sedimentasi menunjukkan korelasi negatif sebesar -0.842 artinya ketika kerapatan mangrove tinggi maka laju sedimentasi akan rendah dan sebaliknya ketika kerapatan mangrove rendah maka laju sedimentasi akan tinggi. Mangrove in the area of Bedono waters, Sayung District, Demak are utilized by the society to fulfill their life needs through land mangrove conversion into ponds, settlement, industry, and logging by the society for various purposes, thereby reducing the mangrove roots capability as a sediment traps. The purpose of this study was to determine the influence of mangrove density on sedimentation rate. The research was conducted in April 2017 in the mangrove forest area of Bedono Village. Determination of sampling location was done by conducting some initial observation. Observation was done by searching three mangrove vegetation stations with different density is high, medium and rare density. In each station there are 3 points of sampling. Samples were collected three times in 2 weeks time interval. The results showed that the highest sedimentation rate was found at station I point 3 with the average value of 30.935 mg/cm2/day where at this location has the lowest mangrove density of 600 trees/ha while the lowest sedimentation rate was found at station III Point 2 with the average value of 4.891 mg/cm2/day where at this location has the highest density of 3100 trees/ha. The relationship between mangrove density and sedimentation rate exhibits a negative correlation of -0,842 this means that when the mangrove density is high then the sedimentation rate will be low and otherwise when the mangrove density is low then the sedimentation rate will be high.  

The determination of sedimentation rates in Lake Ontario using the 210Pb dating method

1978 ◽  
Vol 15 (3) ◽  
pp. 431-437 ◽  
Author(s):  
John G. Farmer
Keyword(s):  
Sedimentation Rate ◽  
Lake Ontario ◽  
Sedimentary Basins ◽  
210Pb Dating ◽  
Sedimentation Rates ◽  
Surface Mixing ◽  
Dating Method ◽  
210Pb Dating Method

The 210Pb dating method has been applied successfully to the determination of recent sedimentation rates at four sites distributed among the three major sedimentary basins (Niagara, Mississauga and Rochester) of Lake Ontario. Following correction for effects due to compaction of the sediments, mean sedimentation rates ranging from 0.02 cm/year at the periphery of the Mississauga basin to 0.11 cm/year in the Niagara and Rochester basins were determined. Allowance for compaction reduced the non-compaction-corrected sedimentation rates by 20–35%. Neither 210Pb nor fallout 137Cs profiles indicated surface mixing of sediment sufficient to noticeably affect the calculated sedimentation rates. At all four sites, the sedimentation rate seems to have remained constant during the last 100–150 years.

C-REACTIVE PROTEIN IN THE SERUM IN NEPHROSIS AND ACUTE GLOMERULONEPHRITIS

PEDIATRICS ◽  
1960 ◽  
Vol 25 (1) ◽  
pp. 106-111
Author(s):  
Aree Valyasevi ◽  
Joseph M. Sloan ◽  
Lewis A. Barness
Keyword(s):  
Nephrotic Syndrome ◽  
Hormone Therapy ◽  
Erythrocyte Sedimentation Rate ◽  
Sedimentation Rate ◽  
Positive Test ◽  
Acute Glomerulonephritis ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Erythrocyte Sedimentation

C-reactive protein in the serum and the erythrocyte sedimentation rate were followed serially in 13 patients with acute nephritis and in 9 patients with the nephrotic syndrome. Although a positive C-reactive protein test was always associated with evidence of infection, obvious infection in a few instances was not accompanied by a positive test. Determination of C-reactive protein is valuable in determining the presence of infection in patients with acute nephritis and the nephrotic syndrome, especially in the latter where hormone therapy may mask many signs of infection.

scholarly journals KEANEKARAGAMAN JENIS GASTROPODA DI KAWASAN HUTAN MANGROVE DI KELURAHAN SETAPUK BESAR KOTA SINGKAWANG

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
. Mardi ◽  
M Sofwan Anwari ◽  
. Burhanuddin
Keyword(s):  
Mangrove Forest ◽  
Positive Impact ◽  
Diversity Index ◽  
Sampling Technique ◽  
Forest Area ◽  
Survey Method ◽  
Environmental Damage ◽  
High Level ◽  
Coarse To Fine

Mangrove Surya Perdana Mandiri is a conservation forest area that has a positive impact on the environment and fauna habitat. The main purpose of planting or reforestation in the Surya Perdana Mandiri mangrove forest area is that there are concerns about the high level of abrasion and environmental damage, so mangrove planting in the coastal area, especially the Setapuk Besar Village, Singkawang North Subdistrict. Gastropods is a group of shelled invertebrates and has the main characteristic of using its legs to walk. Gastropoda is a group of animals from mollusc phyla that can live on the type of substrate from coarse to fine. This study aims to examine the diversity of gastropods in the Surya Perdana Mandiri mangrove forest in Setapuk Besar Village, Singkawang Utara Subdistrict. The research method used the survey method. Determination of the location of gastropod research was carried out based on Purposive sampling technique. The results of observations carried out were 8 species consisting of 5 families. Line 1 consists of 63 individuals in line 2 consisting of 86 individuals and line 3 consists of 74 with individual totals of 223. Diversity index of line 1 with value H ̅ = 0.52, line 2 with value H ̅ = 0.56 and path 3 with the value H ̅ = 0.62. Based on these values, species diversity (H ̅) in each research line is categorized as having low diversity.Keywords: Diversity, Gastropods, Surya Perdana Mandiri Mangrove

scholarly journals Komposisi Jenis Gastropoda di Mangrove Desa Kaliwlingi dan Sawojajar, Jawa Tengah

2020 ◽  
Vol 9 (2) ◽  
pp. 167-174
Author(s):  
Erik Wijaya Kusuma ◽  
Ria Azizah Tri Nuraini ◽  
Retno Hartati
Keyword(s):  
Mangrove Forest ◽  
Diversity Index ◽  
Gastropod Species ◽  
Mangrove Area ◽  
Central Java ◽  
Mangrove Ecosystems ◽  
The Mean ◽  
The Difference ◽  
Different Characteristics

ABSTRAK : Desa Kaliwlingi dan Sawojajar mempunyai kawasan hutan mangrove dengan karakteristik berbeda. Kawasan hutan mangrove Kaliwlingi menjadi ekowisata mangrove sejak tahun 2016, sedangkan di Sawojajar merupakan kawasan mangrove alami. Perbedaan fungsi tersebut diduga dapat mempengaruhi keanekaragaman hayati yaitu salah satunya adalah gastropoda. Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas Gastropoda di ekosistem mangrove Desa Kaliwlingi dan Sawojajar, Kab.Brebes, Jawa Tengah. Pengambilan sampel dilakukan pada bulan Juni sampai Juli 2018. Penentuan titik sampling menggunakan metode purposive pada 3 stasiun dengan tiga kali pengulangan. Hasil penelitian menunjukan terdapat 2 subkelas yaitu Pulmonata dan Prosobranchiata, dengan 3 famili dan  9 spesies gastropoda dari 3 famili, yaitu Elliobidae; Cassidula aurisfelis (Elliobidae), C. nucleus (Elliobidae), Littoraria articulate (Littorinidae), L. carinifera (Littorinidae), L. melanostoma (Littorinidae), L. scabra (Littorinidae), Telescopium telescopium (Potamididae), Terebralia obtuse (Potamididae), T. palustris (Potaminidae).  Nilai kelimpahan rata-rata gastropoda Desa Kaliwlingi dan Desa Sawojajar masing-masing 20,28 dan 16,36 Ind/m². Indeks Keanekaragaman (H’) gastropoda di kawasan mangrove Desa Kaliwlingi dan Desa Sawojajar termasuk ke dalam kategori rendah ke tinggi, sedangkan indeks keseragamannya  berkategori rendah.  Tidak ada jenis gastropod yang mendominasi di kawasan mangrove Kaliwlingi dan Sawojajar, dengan pola sebaran gastropoda mengelompok.ABSTRACT: Kaliwlingi and Sawojajar villages have mangrove forest areas with different characteristics. The Kaliwlingi mangrove forest area has been established as mangrove ecotourism since 2016, while in Sawojajar it is a natural mangrove area. The difference in function is thought to affect biodiversity, one of which is gastropods. The purpose of this study was to determine the structure of the Gastropoda community in the mangrove ecosystems of Kaliwlingi and Sawojajar Villages, Kab. Brebes, Central Java. Sampling was conducted in June to July 2018. Determination of the sampling points using purposive methods at 3 stations with three repetitions. The results showed that there were 2 subclasses, namely Pulmonata and Prosobranchiata, with 3 families and 9 gastropod species from 3 families, namely Elliobidae; Cassidula aurisfelis (Elliobidae), C. nucleus (Elliobidae), Littoraria articulate (Littorinidae), L. carinifera (Littorinidae), L. melanostoma (Littorinidae), L. scabra (Littorinidae), Telescopium telescopium (Potamebidide) ), T. palustris (Potaminidae). The mean abundance of gastropods in Kaliwlingi Village and Sawojajar Village were 20.28 and 16.36 Ind / m² respectively. Diversity Index (H ') of gastropods in the mangrove areas of Kaliwlingi Village and Sawojajar Village are in the low to high category, while the uniformity index is categorized as low. There is no type of gastropod that dominates in the Kaliwlingi and Sawojajar mangrove areas, and gastropod distributed as a grouped.  

scholarly journals Determination of the amount of carbon stored in a disturbed mangrove forest in Campeche, Mexico

2011 ◽  
Author(s):  
R. M. Cerón ◽  
J. J. Guerra ◽  
J. C. Zavala ◽  
L. E. Amador ◽  
E. Endañu ◽  
...  
Keyword(s):  
Mangrove Forest
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