scholarly journals The effect of distance of floating karamba on placement of phytoplankton abundance in coastal waters of Sathean Village, Langgur - Tual Regency

2020 ◽  
Vol 441 ◽  
pp. 012134
Author(s):  
W Isroni ◽  
A S Bahri ◽  
A A Amin
Keyword(s):  
Coastal Waters ◽  
Phytoplankton Abundance

scholarly journals The Analysis of Phytoplankton Abundance Using Weibull Distribution (A Case Study in the Coastal Area of East Yapen in the Regency of Yapen Islands, Papua)

2018 ◽  
Vol 7 (3) ◽  
pp. 251
Author(s):  
Ervina Indrayani ◽  
Lisiard Dimara ◽  
Kalvin Paiki ◽  
Felix Reba
Keyword(s):  
Coastal Waters ◽  
Likelihood Estimation ◽  
Cumulative Probability ◽  
Marine Biota ◽  
Phytoplankton Abundance ◽  
Chi Square ◽  
Phytoplankton Distribution ◽  
Distribution Parameters ◽  
Primary Producer ◽  
Special Studies

The coastal waters of East Yapen is one of the spawning sites and areas of care for marine biota in Papua. Because of its very open location, it is widely used by human activities such as fishing, residential, industrial and cruise lines. This indirectly affects the balance of coastal waters condition of East Yapen that impact on the existence of marine biota, especially phytoplankton. Phytoplanktons have a very important role because phytoplankton is the primary producer in the food chain as a link to higher tropical levels. Therefore, special studies are needed such as looking at the distribution of phytoplankton abundance at each site. The data analysis uses the American Public Health Association (APHA), Geo-statistical data, and Chi Square. Then, the distribution parameters are estimated using the Maximum Likelihood Estimation (MLE) method.The obtained parameters are used to describe the cumulative probability and survival of phytoplankton distribution. Samples are taken from fifteen sampling points. The form parameter of the phytoplankton abundance data is 3.9844 and the scale parameter is 79.929. So phytoplankton is the most widely spread in the 15th location, followed by the 6th location. While phytoplankton is at least in the 8th location.The results showthat the highest phytoplankton abundance composition is Bacillariophyceae (50%) and the lowest is Phyrrophyceae (9%) and Cyanophceae. The research is expected to provide an overview of the fertility rate of East Yapen Coastal Waters in particular and Yapen Islands regency in general.

scholarly journals Abundance of Phytoplankton In The Coastal Waters of South Sumatera

2017 ◽  
Vol 22 (1) ◽  
pp. 31
Author(s):  
Riris Aryawati ◽  
Dietriech G. Bengen ◽  
Tri Prartono ◽  
Hilda Zulkifli
Keyword(s):  
Water Quality ◽  
Primary Production ◽  
Food Chain ◽  
Coastal Waters ◽  
Diversity Index ◽  
Mesh Size ◽  
Phytoplankton Species ◽  
Phytoplankton Abundance ◽  
Dominance Index

Phytoplankton in the ocean has an important role in forming the base of food chain,  responsible in primary production. Its abundance and number of phytoplankton species will indirectly affect the level of water’s fertility. This study aimed to determine the presence of phytoplankton as bio-indicators of water quality in terms of abundance, diversity index, uniformity index, and saprobic coefficient in coastal waters of South Sumatera. The study was conducted on May 2013 - February 2014, at ten stations during high and low tides. Phytoplankton samples were taken vertically using plankton nets,  cone-shaped with a diameter of 30 cm, length 100 cm and mesh size 30 μm. The study found 41 genera of phytoplankton, consisted of family Bacillariophyceae (26 genera), Dinophyceae (7 genera) Cyanophyceae (7 genera) and Chlorophyceae (1 genus). The highest number of genera was recorded while low tides in November (24 genera), and the lowest was on May while high tides (16 genera). The highest abundance of phytoplankton was recorded in August during high tides (2,68 x 107 cell.m-3), and the lowest was in May during high tides (6,59 x 105cell.m-3). The diversity index (H'),  the uniformity index (E), and the dominance index (D) ranged between 0,64–3; 0,15–0,71 and 0,15–0,83 respectively.  Keywords: phytoplankton, abundance, diversity index, South Sumatera coast.

scholarly journals Struktur komunitas fitoplankton dan kaitannya dengan ketersediaan zat hara dan parameter kualitas air lainnya di perairan Timur Surabaya

DEPIK ◽  
2015 ◽  
Vol 4 (2) ◽  
Author(s):  
Setya Indra Padma Putri ◽  
Syarifah Hikmah Julinda Sari
Keyword(s):  
Community Structure ◽  
Nutrient Availability ◽  
Coastal Waters ◽  
Diversity Index ◽  
Environmental Parameters ◽  
Phytoplankton Abundance ◽  
Environment Parameters ◽  
Relationship Of ◽  
The Relationship ◽  
Regression Correlation

<p><strong>Abstract. </strong>The objetives of the present research were to determine relationship of phytoplankton abundance and community structure with environmental factors.The research was conducted in twelve stations along East Surabaya’s Coastal Waters. The samplings were represented early dry season (May-July 2013). Regression Correlation Analisis and Principle Component Analysis were involved to determine the relationship between community structure of phytoplankton and nutrient availability as well as other environmental parameters. The results showed that the concentration of Nitrate (NO3-N) was ranged from 1.80mg/L to 7.31 mg/L while Phosphate (PO4-P) was 0.20 – 4.75 mg/L. The phytoplankton abundance was varied between 3300 cell/L to 47000 cell/L. The highest phytoplankton abundance was found in the estuary and deacreased toward the sea areas. The dDiversity and evennes indices were low category, while dominance index was found to be relatively high, where Skeletonema sp. was predominant. Diversity index was not correlated significantly with nutrient availability, while there were a significant correlation between phytoplankton abundance and environment parameters namely salinity, DO and brighness<br /><strong></strong></p><p><strong>Keywords :</strong> phytoplankton abundance; oseanography factor; spatial analysis; coastal waters</p><p><strong>Abstrak.</strong> Penelitian ini bertujuan untuk mengetahui keterkaitan antara kelimpahann dan struktur komunitas fitoplankton dengan faktor lingkungan di perairan pesisir. Penelitian dilakukan pada 12 stasiun berbeda di Perairan Timur Surabaya. Sampling plankton dan kualitas air mewakili awal musim kemarau (Mei – Juli 2013). Analisis regresi korelasi dan analisis komponen utama dilakukan untuk melihat keterkaitan struktur komunitas dan ketersedian zat hara dan parameter lingkungan lainnya di lokasi penelitian. Hasil penelitian menunjukkan kandungan zat hara yang relatif tinggi: Nitrat (NO3-N) antara 1,80 – 7,31 mg/L dan Fosfat (PO4-P) antara 0,20 – 4,75 mg/L. Distribusi fitoplankton bervariasi antara 3,3 – 4,7.103sel/L. Kelimpahan plankton paling tinggi didapat pada stasiun muara sungai dengan indikasi penurunan ke arah laut. Indeks keragaman jenis (H’) dan indeks keseragaman jenis (E) relatif rendah; sebaliknya indeks dominasi tinggi (D&gt;0,5) dengan didominasi oleh Skeletonema sp.. Indeks diversitas menunjukkan hubungan yang tidak bermakna dengan zat hara. Namun, kelimpahan fitoplankton berkorelasi secara signifikan dengan parameter salinitas, DO dan kecerahan.</p><p><br /><strong>Kata kunci :</strong>kelimpahan fitoplankton; faktor oseanografi; analisis spasial; perairan pesisir</p>

scholarly journals The Strategy of Phytoplankton on Critical Conditions in Coastal Waters

2020 ◽  
Vol 8 (1) ◽  
pp. 11
Author(s):  
Rahmadi Tambaru ◽  
Muh. Farid Samawi ◽  
Khairul Amri
Keyword(s):  
Incubation Time ◽  
Coastal Waters ◽  
Critical Time ◽  
Sampling Time ◽  
Critical Conditions ◽  
Environmental Condition ◽  
Phytoplankton Abundance ◽  
Group I ◽  
Components Analysis ◽  
Sunlight Intensity

The productivity of phytoplankton found best in coastal waters is on a critical aquatic environmental condition for the life of phytoplankton (incubation time : 10.00-14.00). At that incubation time, the sun reached the apex of illumination (12.00). Theoretically, the best productivity is unlikely to happen because the activity of phytoplankton is not perfect. To answer that doubt, the research deals with the strategy of life phytoplankton on critical conditions in coastal waters. To achieve the desired results, multivariate analysis is used Correspondent analysis (CA) and Principal Components Analysis (PCA). The results showed that based on the analysis of Factorial Koresponde (CA), there were two grouping of phytoplankton  abundance. Group I showed that the grouping of phytoplankton  abundance of occurred at A depth of 10 m at the sampling  time A (10.00 : normal conditions). Group II occurs at a depth of 5 and 15 m at sampling time B (14.00: critical condition). Furthermore, the shift in grouping phytoplankton occurs at the sampling  time A at a depth of 10 m into the sampling time B in 5 m depth, not at at a depth of 0 m. This is due to the very strong sunlight intensity that can lead to death in the genera of phytoplankton that exist. It turns out that the strategy and the dynamics of phytoplankton abundance at critical time is not doing the grouping at the surface depth (0 m), but at a deeper depth (5 m) in order to keep the activity well done.

Breeding biology of the barnacle Amphibalanus amphitrite (Crustacea: Cirripedia): influence of environmental factors in a tropical coast

2009 ◽  
Vol 89 (6) ◽  
pp. 1203-1208 ◽  
Author(s):  
S. Satheesh ◽  
S. Godwin Wesley
Keyword(s):  
Coastal Waters ◽  
Mantle Cavity ◽  
Breeding Biology ◽  
Balanus Amphitrite ◽  
Surface Water Temperature ◽  
Phytoplankton Abundance ◽  
Breeding Activity ◽  
The Common ◽  
Fouling Organisms ◽  
Tropical Coast

Barnacles are the common fouling organisms encountered in coastal waters around the world. In the present study, breeding biology of the intertidal barnacle Amphibalanus amphitrite (=Balanus amphitrite) was studied for a period of two years (July 2003 to June 2005) in the Kudankulam coastal waters. Results showed that A. amphitrite breeds throughout the year in the study area. A high percentage of individuals with free nauplii in the mantle cavity was observed during March 2004 (47.6%) and May 2004 (41.7%). Barnacles with fertilized eggs in the ovary were high during November 2004 (56%), March 2005 (46.7%) and April 2005 (42.8%). Overall, a peak breeding activity was observed during the March–May period. The breeding activity showed a significant positive correlation with surface water temperature and phytoplankton abundance.

scholarly journals Seasonal abundance and distribution of phytoplankton in Tanintharyi coastal waters, southern Myanmar

Bionatura ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 1203-1208
Author(s):  
Khin Khin Gyi ◽  
Wint Thuzar Nwe ◽  
Zin Zin Zaw ◽  
Khin Khin San
Keyword(s):  
Coastal Waters ◽  
Sharp Increase ◽  
Species Abundance ◽  
Water Clarity ◽  
Freshwater Discharge ◽  
Seasonal Abundance ◽  
Phytoplankton Abundance ◽  
Cell Abundance ◽  
Abundance And Distribution ◽  
Wide Fluctuation

The seasonal abundance and distribution of phytoplankton along the Tanintharyi coastal waters were investigated for 24 months from June 2013 to June 2015. A wide fluctuation in cell abundance 72,450-714,396 cells/l at Kawthaung, 47,416-947,501 cells/l at Myeik, 8,930-28,439 cells/l at Kampani, 8,976-17,888 cells/l at Ye and 5,162-16,986 cells/l at Setse were noted during the study period. Amongst, Kawthaung and Myeik stations had the highest phytoplankton abundance, whereas Ye and Setse stations showed remarkably lower abundance. It was noted that Ye and Setse stations were much influenced by freshwater discharge from the Thanlwin River, which deposited huge tons of sediments. The water clarity was lower at these stations compare with others. Therefore, turbidity may affect the occurrence and species abundance of phytoplankton. A clear seasonal trend was found at all five stations with a sharp increase in the pre-monsoon months and a gradual decrease in the monsoon and post-monsoon periods. Keywords: phytoplankton, Tanintharyi, water clarity, turbidity,

scholarly journals Diversity and Abundance of Phytoplankton in the Coastal Waters of South Sulawesi

2021 ◽  
Vol 28 (3) ◽  
pp. 199
Author(s):  
Hasriani Ayu Lestari ◽  
M. Farid Samawi ◽  
Ahmad Faizal ◽  
Abigail Mary Moore ◽  
Jamaluddin Jompa
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Coastal Waters ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Inorganic Materials ◽  
Phytoplankton Abundance ◽  
Phytoplankton Diversity ◽  
South Sulawesi ◽  
Phytoplankton Communities

Phytoplankton are primary producers that can be used as seawater condition indicators. Certain phytoplankton can proliferate, causing harmful algal blooms (HABs). The coastal waters of South Sulawesi, Indonesia are under pressure from land-based processes and activities resulting in inputs of organic and inorganic materials. This study analysed phytoplankton diversity and abundance in coastal waters around South Sulawesi. Phytoplankton were sampled and seawater parameters (salinity, temperature, turbidity, pH, nitrate concentration) measured in-situ at six stations around seven major river estuaries in three seaways (Makassar Strait, Flores Sea, Gulf of Bone). Phytoplankton taxonomic composition, abundance and indices of diversity (H’), evenness (E), and dominance (D) were analysed. Phytoplankton from 31 species and three classes (Bacillariophyceae, Cyanophyceae, Dinophyceae) were identified. Phytoplankton abundance and community structure differed significantly between sites and seaways but were not significantly correlated with water quality parameters although Dinophyceae abundance correlated significantly with observed pollution levels. Phytoplankton abundance was strongly influenced by the Dinophyceae, especially Ceratium furca, a potential HAB species; Cyanophyceae had the strongest influence on species richness but least on community structure. C. furca abundance was strongly correlated negatively with species richness, H’ and E, and positively with D, indicating negative impacts of this species on phytoplankton communities.

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