scholarly journals Fish assemblage structure in relation to seagrass bed in Tidung Kecil Island, Kepulauan Seribu

2018 ◽  
Vol 74 ◽  
pp. 02005 ◽  
Author(s):  
Nurul Hidayati ◽  
M. Suparmoko
Keyword(s):  
Fish Community ◽  
Diversity Index ◽  
Structural Complexity ◽  
Community Response ◽  
Community Diversity ◽  
Nursery Ground ◽  
Fish Assemblage Structure ◽  
Seagrass Beds ◽  
Seagrass Bed ◽  
Underwater Visual Census

Seagrass provides many ecosystem services that are of beneficial to humans, including its role as a nursery ground for some commercial fishes. This ecosystem role depends on the structural complexity of seagrass beds. Yet few studies in Indonesia sought to associate seagrass with fish. The aim of this paper is to determine fish community response to different seagrass bed density. This study was carried out in the coastal waters of Tidung Kecil Island, Kepulauan Seribu. The fish observation was conducted using underwater visual census in stationary point count. The result showed that there were 21 species and S. canaliculatus was dominantly found. Fish abundance and fish community diversity index were found to be higher in seagrass beds with high densities compared to the seagrass beds with low density. The results of this study underline seagrass density can impact upon associated fish. This study provides the contribution of seagrass for coastal fisheries as a nursery ground. It is a way to promote the seagrass ecosystem to the society, therefore it can be considered into coastal policy.

scholarly journals FISH COMMUNITY STRUCTURE IN DIFFERENT SEAGRASS BEDS OF BARRANG LOMPO ISLAND

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
Rohani Ambo Rappe
Keyword(s):  
Fish Community ◽  
Diversity Index ◽  
Structural Complexity ◽  
Physical Nature ◽  
Ecological Function ◽  
Community Diversity ◽  
Seagrass Beds ◽  
Fish Community Structure ◽  
Seagrass Meadows ◽  
Leaf Density

<p>The importance of seagrass meadows as a habitat for fishes, including several of economic importance, is widely acknowledged. The complexity of seagrass beds might offer a different condition of habitat for fishes. The physical nature of the seagrass canopy is thought to play a major role, potentially influencing available shelter, food, and protection from predators. Structural complexity of seagrass such as shoot and leaf density is also an important factor in determining ecological function of seagrass in the marine environment. The objective of the research is to assess the ecological function of different seagrass beds (in terms of spesies and density) in supporting fish community. The study found 28 species of fish originating from 14 families and Pomacentridae were dominantly found. Abundance of fish found to be higher in seagrass beds with high densities both composed by one species of seagrass (monospesific) or by more than one species of seagrass (multispesific), compared to the seagrass beds with low density and bare areas. Fish community diversity index was found higher in dense seagrass beds composed of many species of seagrass compared to the rare and consists of only one species of seagrass. The presence of epiphytes as nutrients for the fish that live in seagrass beds may contribute to the finding.</p><p>Keywords: Seagrass, fish, Barrang Lompo Island</p>

scholarly journals FISH COMMUNITY STRUCTURE IN DIFFERENT SEAGRASS BEDS OF BARRANG LOMPO ISLAND

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
Rohani Ambo Rappe
Keyword(s):  
Fish Community ◽  
Diversity Index ◽  
Structural Complexity ◽  
Physical Nature ◽  
Ecological Function ◽  
Community Diversity ◽  
Seagrass Beds ◽  
Fish Community Structure ◽  
Seagrass Meadows ◽  
Leaf Density

The importance of seagrass meadows as a habitat for fishes, including several of economic importance, is widely acknowledged. The complexity of seagrass beds might offer a different condition of habitat for fishes. The physical nature of the seagrass canopy is thought to play a major role, potentially influencing available shelter, food, and protection from predators. Structural complexity of seagrass such as shoot and leaf density is also an important factor in determining ecological function of seagrass in the marine environment. The objective of the research is to assess the ecological function of different seagrass beds (in terms of spesies and density) in supporting fish community. The study found 28 species of fish originating from 14 families and Pomacentridae were dominantly found. Abundance of fish found to be higher in seagrass beds with high densities both composed by one species of seagrass (monospesific) or by more than one species of seagrass (multispesific), compared to the seagrass beds with low density and bare areas. Fish community diversity index was found higher in dense seagrass beds composed of many species of seagrass compared to the rare and consists of only one species of seagrass. The presence of epiphytes as nutrients for the fish that live in seagrass beds may contribute to the finding.Keywords: Seagrass, fish, Barrang Lompo Island

scholarly journals THE COMPOSITION OF SPECIES AND STRUCTURE OF SEAGRASS FISH COMMUNITY IN TANJUNG TIRAM – INNER AMBON BAY

2012 ◽  
Vol 4 (1) ◽  
Author(s):  
Husain Latuconsina ◽  
M. Natsir Nessa ◽  
Rohani Ambo Rappe
Keyword(s):  
Fish Community ◽  
Neap Tide ◽  
Nursery Ground ◽  
Seagrass Beds ◽  
Fish Community Structure ◽  
Siganus Canaliculatus ◽  
Seagrass Ecosystems ◽  
Management And Conservation ◽  
Swept Area

<p>The study was conducted in March - May 2011 in the coastal waters of Tanjung Tiram – inner Ambon bay. The aims of the study were to determine the composition of species and structure of fish communities in seagrass beds ecosystems. Fish were collected every spring and neap tide for three month periode with a swept area method using beach seine. Fishes were collected as many as 6444 individuals representing 68 species from 29 families. Siganus canaliculatus was contributed up to 62.91% of the total individual fish found.The fish community structure was varied between spring and neap tide. Index of dominance was in low category, diversity in medium, and evenness in unstable conditions. Moreover, the results indicated that seagrass ecosystems in Tanjung Tiram (TAD) have an important role as spawning, nursery ground, and feeding ground. Therefore, management and conservation efforts are urgently needed to maintain the ecological role of seagrass ecosystems for the sustainability of the fish resources.</p><p>Keywords: Seagrass beds, fish community, tanjung tiram, inner Ambon Bay</p>

scholarly journals Colony geometry and structural complexity of the endangered speciesAcropora cervicornispartly explains the structure of their associated fish assemblage

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1861 ◽  
Author(s):  
Esteban A. Agudo-Adriani ◽  
Jose Cappelletto ◽  
Francoise Cavada-Blanco ◽  
Aldo Croquer
Keyword(s):  
Fish Assemblage ◽  
Fish Community ◽  
Fish Assemblages ◽  
Three Dimensional ◽  
Structural Complexity ◽  
Habitat Associations ◽  
Coral Tissue ◽  
Live Coral ◽  
Fish Assemblage Structure ◽  
Acropora Cervicornis

In the past decade, significant efforts have been made to describe fish-habitat associations. However, most studies have oversimplified actual connections between fish assemblages and their habitats by using univariate correlations. The purpose of this study was to identify the features of habitat forming corals that facilitate and influences assemblages of associated species such as fishes. For this we developed three-dimensional models of colonies ofAcropora cervicornisto estimate geometry (length and height), structural complexity (i.e., volume, density of branches, etc.) and biological features of the colonies (i.e., live coral tissue, algae). We then correlated these colony characteristics with the associated fish assemblage using multivariate analyses. We found that geometry and complexity were better predictors of the structure of fish community, compared to other variables such as percentage of live coral tissue or algae. Combined, the geometry of each colony explained 40% of the variability of the fish assemblage structure associated with this coral species; 61% of the abundance and 69% of fish richness, respectively. Our study shows that three-dimensional reconstructions of discrete colonies ofAcropora cervicornisprovides a useful description of the colonial structural complexity and may explain a great deal of the variance in the structure of the associated coral reef fish community. This demonstration of the strongly trait-dependent ecosystem role of this threatened species has important implications for restoration and conservation efforts.

scholarly journals THE COMPOSITION OF SPECIES AND STRUCTURE OF SEAGRASS FISH COMMUNITY IN TANJUNG TIRAM – INNER AMBON BAY

2012 ◽  
Vol 4 (1) ◽  
Author(s):  
Husain Latuconsina ◽  
M. Natsir Nessa ◽  
Rohani Ambo Rappe
Keyword(s):  
Fish Community ◽  
Neap Tide ◽  
Nursery Ground ◽  
Seagrass Beds ◽  
Fish Community Structure ◽  
Siganus Canaliculatus ◽  
Seagrass Ecosystems ◽  
Management And Conservation ◽  
Swept Area

The study was conducted in March - May 2011 in the coastal waters of Tanjung Tiram – inner Ambon bay. The aims of the study were to determine the composition of species and structure of fish communities in seagrass beds ecosystems. Fish were collected every spring and neap tide for three month periode with a swept area method using beach seine. Fishes were collected as many as 6444 individuals representing 68 species from 29 families. Siganus canaliculatus was contributed up to 62.91% of the total individual fish found.The fish community structure was varied between spring and neap tide. Index of dominance was in low category, diversity in medium, and evenness in unstable conditions. Moreover, the results indicated that seagrass ecosystems in Tanjung Tiram (TAD) have an important role as spawning, nursery ground, and feeding ground. Therefore, management and conservation efforts are urgently needed to maintain the ecological role of seagrass ecosystems for the sustainability of the fish resources.Keywords: Seagrass beds, fish community, tanjung tiram, inner Ambon Bay

scholarly journals FISH SPECIES COMPOSITION IN SEAGRASS BEDS OF TANJUNG MERAH (NORTH SULAWESI), INDONESIA

2015 ◽  
Vol 36 (2) ◽  
pp. 1-10 ◽  
Author(s):  
Augy Syahailatua
Keyword(s):  
Fish Assemblage ◽  
Marine Fishes ◽  
Nursery Ground ◽  
Fish Assemblage Structure ◽  
Seagrass Beds ◽  
Beam Trawl ◽  
North Sulawesi ◽  
Permanent Resident ◽  
Fish Species Composition ◽  
The Given

Seagrass beds are found along the shore of Tanjung Merah (North Sulawesi, Indonesia). This ecosystem covers approximately 20 hectars, and are well known to support local fisheries. Thalassiahemprichii was the dominant seagrass species at the study site. This study in the given area was aimed to monitor any changes in fish assemblage structure, and examine the function of seagrass beds for marine fish. Fishes were sampled using the small beam trawl in March 2003, April 2004 and September 2005. A total of 137 species belonging to 34 families were identified. Twenty four species were found abundantly in terms of individual numbers, however Apogon margaritophorus and A. hartzfeldii were the most dominant. These two species were permanent resident, indicated by a catch of large number in different stages of life cycle. We also noticed that many adults of A. margaritophorus kept fertilized eggs in their mouths. This evidence also confirmed that seagrass beds function as both spawning and nursery ground for marine fishes. During three years’ monitoring, there was a slightly seasonal variety in fish assemblage structures.

scholarly journals Unmapped exome reads implicate a role for Anelloviridae in childhood HIV-1 long-term non-progression

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Savannah Mwesigwa ◽  
◽  
Lesedi Williams ◽  
Gaone Retshabile ◽  
Eric Katagirya ◽  
...  
Keyword(s):  
Hiv Infection ◽  
Diversity Index ◽  
Strong Association ◽  
Community Diversity ◽  
Added Value ◽  
Sequencing Platform ◽  
Public Health Burden ◽  
Survival Status ◽  
Significant Public Health

AbstractHuman immunodeficiency virus (HIV) infection remains a significant public health burden globally. The role of viral co-infection in the rate of progression of HIV infection has been suggested but not empirically tested, particularly among children. We extracted and classified 42 viral species from whole-exome sequencing (WES) data of 813 HIV-infected children in Botswana and Uganda categorised as either long-term non-progressors (LTNPs) or rapid progressors (RPs). The Ugandan participants had a higher viral community diversity index compared to Batswana (p = 4.6 × 10−13), and viral sequences were more frequently detected among LTNPs than RPs (24% vs 16%; p = 0.008; OR, 1.9; 95% CI, 1.6–2.3), with Anelloviridae showing strong association with LTNP status (p = 3 × 10−4; q = 0.004, OR, 3.99; 95% CI, 1.74–10.25). This trend was still evident when stratified by country, sex, and sequencing platform, and after a logistic regression analysis adjusting for age, sex, country, and the sequencing platform (p = 0.02; q = 0.03; OR, 7.3; 95% CI, 1.6–40.5). Torque teno virus (TTV), which made up 95% of the Anelloviridae reads, has been associated with reduced immune activation. We identify an association between viral co-infection and prolonged AIDs-free survival status that may have utility as a biomarker of LTNP and could provide mechanistic insights to HIV progression in children, demonstrating the added value of interrogating off-target WES reads in cohort studies.

Heterotrophic Bacterial Community Structure of Multistage Biofilters in a Commercial Pufferfish Takifugu rubripes RAS

2013 ◽  
Vol 726-731 ◽  
pp. 1621-1627 ◽  
Author(s):  
Zhu Chen ◽  
Ying Liu ◽  
Liang Zi Liu ◽  
Xiao Jing Wang ◽  
Zhi Pei Liu ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Bacterial Community ◽  
Bacterial Community Structure ◽  
Heterotrophic Bacteria ◽  
Diversity Index ◽  
Community Diversity ◽  
Takifugu Rubripes ◽  
Recirculating Aquaculture ◽  
Microbial Resources

The success of a recirculating aquaculture system (RAS) greatly depends on the structure, dynamics and activities of microbial community. Heterotrophic bacteria as the major members play various roles. The heterotrophic bacterial community structure in threestaged biofilters was studied using four different media. 228 isolates belonging to 77species were obtained and affiliated toGammaproteobacteria,Alphaproteobacteria,Bacteroidetes,Firmicutes,ActinobacteriaandBetaproteobacteria.Gammaproteobacteriawas the predominant group. The concurrence was found between potential pathogens (VibrioandShewanella) and probiotics (BacillusandPseudomonas). On the basis of community diversity index, we could infer that differences existed between stages, and the diversity index increased along the biofilters. A comprehensive understanding of microbial community in RAS will be in favor of utilization of microbial resources and optimizing the culture systems' operation.

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