Community Structure of Macrobenthic Assemblages on Soft Bottom around Heuksan Island, Korea

2021 ◽  
Vol 12 (2) ◽  
pp. 145-154
Author(s):  
Byoung-Mi Choi ◽  
Seok Hyun Youn ◽  
Youn-Jung Kim ◽  
Jae Seong Yun ◽  
In-Soo Seo
Keyword(s):  
Community Structure ◽  
Soft Bottom ◽  
Macrobenthic Assemblages

scholarly journals How do food sources drive meiofauna community structure in soft-bottom coastal food webs?

2018 ◽  
Vol 165 (10) ◽  
Author(s):  
L. H. van der Heijden ◽  
J. Rzeznik-Orignac ◽  
R. M. Asmus ◽  
D. Fichet ◽  
M. Bréret ◽  
...  
Keyword(s):  
Community Structure ◽  
Food Webs ◽  
Food Sources ◽  
Soft Bottom ◽  
Meiofauna Community

scholarly journals Plant Part Age and Size Affect Sessile Macrobenthic Assemblages Associated with a Foliose Red Algae Phycodrys rubens in the White Sea

Diversity ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 80 ◽  
Author(s):  
Alexandra Chava ◽  
Anna Artemieva ◽  
Eugeniy Yakovis
Keyword(s):  
Community Structure ◽  
Surface Area ◽  
Red Algae ◽  
White Sea ◽  
Plant Part ◽  
Marine Macroalgae ◽  
The White Sea ◽  
Plant Parts ◽  
Total Cover ◽  
Macrobenthic Assemblages

Facilitation by foundation species commonly structures terrestrial and marine communities. Intraspecific variation in individual properties of these strong facilitators can affect the whole suite of the dependent taxa. Marine macroalgae often act as ecosystem engineers, providing shelter and substrate for numerous associated organisms. Epibiosis of foliose red algae, however, remains underexplored, especially in the high latitudes. Here we studied sessile macrobenthic assemblages associated with a foliose red algae Phycodrys rubens in the White Sea (66° N) shallow subtidal, and the effect of individual plant properties on their structure. The blades of P. rubens develop annually, and it is possible to tell the young (usually larger) plant parts from the old ones. We hypothesized that epibenthic community structure depends on plant part age and size. We examined epibiosis on 110 plants at two sites, and the results generally supported our hypotheses. Old plant parts were several times smaller, and had higher total cover than young parts. Sponges strongly dominated the epibiosis on old parts, and young parts were dominated by polychaetes and bryozoans. Plant part surface area negatively correlated with total cover on young parts, while on old parts the relatioship was location-specific. On young parts the relative abundance of a polychaete Circeis armoricana increased with surface area, and the proportion of sponges decreased. The patterns indicate that epibenthic community structure is linked to the demography of an ecosystem engineer.

scholarly journals Macrozoobenthic community structure in subtidal soft-bottom area along the coast of Lembeh Island -North Sulawesi

2017 ◽  
Vol 5 (2) ◽  
pp. 105
Author(s):  
Ruddy D. Moningkey ◽  
Lawrence J. L. Lumingas ◽  
Unstain N. W. J. Rembet
Keyword(s):  
Multivariate Analysis ◽  
Community Structure ◽  
Abiotic Factors ◽  
Univariate Analysis ◽  
Shannon Index ◽  
Anthropogenic Factors ◽  
Soft Bottom ◽  
Number Of Species ◽  
North Sulawesi ◽  
Macrozoobenthic Community

The present paper describes the soft-bottom macrozoobenthic community structure inhabiting Lembeh Island’s waters (North Sulawesi). Material for the study was collected from 5 stations in October 2013 using a La Motte grab (600 cm2) and subsequently sieved through a 1 mm square mesh sieve. A total of 1147 individuals belonging to 78 species (taxa) of macrozoobenthos  and representative of higher taxonomic groups belonging to 12 phyla were recorded and identified. Univariate analysis showed low abundance of individuals and number of species in the Pintu Kota station which has a black sludge of sediment but Shannon index values at this station is the highest. Instead Motto station relatively far from anthropogenic disturbance showed a high abundance of individuals and number of species but Shannon  index values at this station is the lowest. The station is dominated by Tanais sp at a density of 9533 individuals m-2. Shannon index is less sensitive to measure the effect of anthropogenic disturbances compared with the abundance of individuals and number of species. The multivariate analysis (Cluster Analysis and Correspondence Analysis) managed to separate the three groups (essemblage) makrozoobethos: Group A (Posokan), Group B (Motto) and Group C (Pancoran, Mawali and Pintu Kota). Abiotic factors such as granulometri, physicochemical, hydrodynamics and anthropogenic factors believed to be the factors controlling the formation of the ecological group.Keywords: macrozoobenthos, anthropogenic impact, multivariate analysis, Lembeh Island.   ABSTRAKTulisan ini menggambarkan struktur komunitas makrozoobentos substrat lunak yang menghuni perairan Pulau Lembeh (Sulawesi Utara). Materi untuk studi ini dikumpulkan dari 5 stasiun pada Oktober 2013 dengan menggunakan grab La Motte (600 cm2) dan kemudian disaring dengan saringan berukuran 1 mm persegi mata saringan. Sebanyak 1147 individu yang termasuk dalam 78 spesies (taksa) makrozoobentos dan mewakili 12 fila atau grup taksonomi telah dicatat dan diidentifikasi. Analisis univariat menunjukkan rendahnya kelimpahan individu dan jumlah spesies di stasiun Pintu Kota yang memiliki sedimen lumpur berwarna hitam tetapi nilai indeks Shannon di stasiun ini adalah yang tertinggi. Sebaliknya di stasiun Motto yang relatif jauh dari gangguan antropogenik menunjukkan tingginya kelimpahan individu dan jumlah spesies tetapi nilai indeks Shannonnya adalah yang terendah. Stasiun ini didominasi oleh Tanais sp dengan kepadatan 9533 individual m-2. Indeks Shannon kurang peka mengukur pengaruh gangguan antropogenik dibandingkan dengan nilai kelimpahan individual dan jumlah spesies. Analisis multivariat (Analysis Kluster dan Analisis Korespondensi) berhasil memisahkan 3 grup (essemblage) makrozoobetos: Grup A (Posokan), Grup B (Motto) dan Grup C (Pancoran, Mawali dan Pintu Kota). Faktor abiotik seperti granulometri, hidrodinamika dan fisika-kimia perairan serta faktor antropogenik diduga merupakan faktor-faktor pengendali pembentukan grup ekologis tersebut.Kata kunci: makrozoobentos, dampak antropogenik, analisis multivariat, Pulau Lembeh.  

scholarly journals Community Structure and Spatial Patterns of Soft-Bottom Macrozoobenthos in Oualidia Lagoon, Moroccan Atlantic

2020 ◽  
Author(s):  
Fatima El Asri ◽  
Daniel Martin ◽  
Ahmed Errhif ◽  
Mohamed-Naoufal Tamsouri ◽  
Mohamed Maanan ◽  
...  
Keyword(s):  
Community Structure ◽  
Spatial Patterns ◽  
Soft Bottom ◽  
Oualidia Lagoon

scholarly journals Changes in soft-bottom macrobenthic assemblages after a sulphuric acid spill in the Rio Grande Harbor (RS, Brazil)

2003 ◽  
Vol 63 (2) ◽  
pp. 183-194 ◽  
Author(s):  
C. E. Bemvenuti ◽  
J. S. Rosa-Filho ◽  
M. Elliott
Keyword(s):  
Sulphuric Acid ◽  
Rio Grande ◽  
Direct Impact ◽  
Soft Bottom ◽  
Discharge Area ◽  
Three Samples ◽  
Macrobenthic Assemblages ◽  
Sampling Points ◽  
Station Location ◽  
Macrobenthic Assemblage

The structure of macrobenthic assemblages in Rio Grande Harbor was analyzed during and after a sulphuric acid spill in August 1988. Five stations were sampled four times between September 1988 and March 1999. At each station, three samples were taken using a van Veen grab (0.078 m²). A total of 22 taxa were collected including Crustacea (9 spp.), Polychaeta (7 spp.), Mollusca (3 spp.), Phoronida (1 sp.), Nemertinea (1 sp.), and Plathyelminthea (1 sp.). The macrobenthic assemblages suffered different impacts depending on station location and time: 1) immediate impact, i.e., during acid discharge, as at the station nearest (250 m) the acid spill source; 2) impact some time after the discharge, as at the station 500 m downstream from the acid spill source; and 3) absence of direct impact on the remaining sampling points, on the discharge area outer limit. The macrobenthic assemblage recovered six months after the sulphuric acid spill.

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