scholarly journals The Pattern of Herbivorous Fish Assemblages in The In Western and Eastern Outermost Island Indonesia

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 116
Author(s):  
Risandi Dwirama Putra ◽  
Rikoh Manogar Siringoringo ◽  
Muhammad Abrar ◽  
Muhammad Abrar ◽  
Ni Wayan Purnamasari ◽  
...  
Keyword(s):  
Coral Reef ◽  
Fish Assemblages ◽  
Basic Research ◽  
Present Condition ◽  
Herbivorous Fish ◽  
Underwater Visual Census ◽  
Herbivorous Fishes ◽  
Eastern Indonesia ◽  
Outer Island ◽  
Density And Biomass

The herbivorous fishes have been considered as a critical functional group and have capability maintaining coral reef resilience and avoiding coral-algal phase-shifts. The present condition shown, almost in tropical reef location, alga has dominated coral, even in the small outer island. The requirement to conduct comprehensive basic research in studying the patterns and composition of herbivorous fish, especially on the small outer islands. Twelve coral reef sites in eastern Indonesia (Liki Islands) and western Indonesia (Natuna Island) used as a research location for comparing the structure patterns of herbivorous fish communities (diversity, density, and body size) using the Underwater Visual Census (UVC) method. There was different pattern of herbivorous fishes families in Liki Island and Natuna Islands, where Acanthuridae is dominant in eastern Indonesia (Liki Islands), including Ctenochaetus striatus (41,00 ± 11,72 se) individuals/350m2, A. maculiceps (23,33 ± 13,61 se) individuals/350m2, Naso hexacanthus (18,67 ± 6,34 se) individuals/350m2 while Scaridae is dominant in western Indonesia (Natuna island), including Scarus rivulatus (31,67 ± 10,61 se) individuals/350m2, Chlorurus sordidus (30,00 ± 8,52 se) individuals/350m2 and Scarus quoyi (19,00 ± 9,73 se) individuals/350m2. Based on herbivore fishes composition Liki Island has a higher density and biomass compared to Natuna Island.Keywords: herbivore, fish, coral, small outer island, Indonesia

scholarly journals Hubungan Rugositas Terumbu Karang terhadap Struktur Komunitas Ikan Corallivor dan Herbivor di Perairan Pemuteran, Bali

2020 ◽  
Vol 3 (1) ◽  
pp. 6
Author(s):  
Nidzar Muhammad Rafly ◽  
I Wayan Gede Astawa Karang ◽  
Widiastuti Widiastuti
Keyword(s):  
Coral Reefs ◽  
Reef Fishes ◽  
Herbivorous Fish ◽  
Strongly Correlated ◽  
Total Abundance ◽  
Underwater Visual Census ◽  
Herbivorous Fishes ◽  
The North ◽  
Fish Feeds ◽  
Abundance And Diversity

Reef fishes are the highest number of organisms that can be found in coral reefs in which the abundance depends on the healthy of this ecosystem. Reef fishes are mainly consisted of corallivorous and herbivorous fish. Corralivorous fish feeds on coral polyps while herbivorous fish feeds on algae. Therefore these fishes are an important indicators in the resilience of coral reefs. Studies showed that its abundance is strongly correlated with reef’s conture (rugosity). Pemuteran waters is one of developing tourists attraction in the north Bali island. However, the data of reef fishes and coral reefs in Pemuteran waters remain limited. Therefore, this research aimed to study the reef` condition and rugosity in Pemuteran waters, also to examine the correlation between reefs fishes and reefs rugosity in this area. There were four stations according to purposive sampling method. Data of corallivorous and herbivorous fishes were collected by using the underwater visual census with a 40 m2 transect. Reef rugosity index were determined by using chain transect method. Results showed that reef rugosity in Pemuteran waters was in the medium to high category. Reef rugosity has strong correlation with the total abundance and diversity of corallivorous fishes. However, reef rugosity was only strong correlated with the total abundance but not with the diversity of herbivorous fishes.

scholarly journals Fish assemblages along the coasts of Tunisia: a baseline study to assess the effectiveness of future Marine Protected Areas

2018 ◽  
Vol 19 (1) ◽  
pp. 11
Author(s):  
EMNA BEN LAMINE ◽  
PAOLO GUIDETTI ◽  
MOHAMED SALAH ROMDHANE ◽  
PATRICE FRANCOUR
Keyword(s):  
Sampling Design ◽  
Fish Assemblages ◽  
Distribution Patterns ◽  
Underwater Visual Census ◽  
Protection Measures ◽  
Coastal Fish ◽  
Significant Difference ◽  
The Status ◽  
Total Fish ◽  
Density And Biomass

The present study investigated coastal fish assemblages, using Underwater Visual Census (UVC) transects, in Tunisia (south Mediterranean basin). The rationale behind this work is to get i) a suggestive evidence about the status of fish assemblages, and ii) baseline data at 3 locations in Tunisia where 3 MPAs will be established, before the implementation of protection measures. At each location, we used a sampling design where fish censuses were performed in two types of zone: zones that will be inside MPAs, and zones that will remain outside. On the whole, 49 taxa belonging to 19 families were censused. Data reveal clear symptoms of overfishing, especially in terms of dominance of small- and medium-sized individuals of commercially relevant species. Our analyses, moreover, did not show any significant difference in whole fish assemblage structures (considering both density and biomass), patterns of average species richness, total fish density and biomass, density and biomass of different trophic categories of fishes, size distribution of commercially relevant species, between future-protected and unprotected zones. Overall, results suggest that 1) current fish assemblages at the three studied locations are likely to be seriously impacted by fishing activities, and 2) these data could be used as reliable baselines to assess the effectiveness of protection measures within the MPAs that will be established in the future. Our study is the first in Tunisia, and in North African coasts, that assessed distribution patterns of coastal fish assemblages by means of UVC, using a formal spatially replicated sampling design for resource management.

scholarly journals Responses of Herbivorous Fishes on Coral Reef Cover in Outer Island Indonesia (Study Case: Natuna Island)

2018 ◽  
Vol 47 ◽  
pp. 04009 ◽  
Author(s):  
Risandi Dwirama Putra ◽  
Ani Suryanti ◽  
Dedi Kurniawan ◽  
Arif Pratomo ◽  
Henky Irawan ◽  
...  
Keyword(s):  
Coral Reef ◽  
Fish Species ◽  
Habitat Complexity ◽  
Species Traits ◽  
Total Biomass ◽  
Underwater Visual Census ◽  
Outer Island ◽  
Line Transects ◽  
Study Case ◽  
Nmds Analysis

Coral reefs are one of the most highly productive marine ecosystems, with the largest transfer of energy attributed to the trophic interaction between herbivores and algae. Rapid demographic growth, leading to transmigration to small islands such as Natuna Island where located on outer Island Indonesia.The aim of the present study is to test for significant associations between herbivore fish species traits and Habitat complexity was derived from coral reef cover. Method to record each observed herbivore fish species with UVC (Underwater Visual Census) using SCUBA diving equipment along modification line transects. A total of 39 different fish species belonging to 3 families‟ herbivore fish were identified. Total biomass of herbivorous fish correlated with Dead Coral Algae (DCA). Biplot of the first two axes for the nonmetric multidimensional a scaling (NMDS) analysis for family and grazer showed the dominance of herbivore fish grazer.

Morphological and ecological trait diversity reveal sensitivity of herbivorous fish assemblages to coral reef benthic conditions

2020 ◽  
Vol 162 ◽  
pp. 105102
Author(s):  
Lucía Pombo-Ayora ◽  
Darren J. Coker ◽  
Susana Carvalho ◽  
George Short ◽  
Michael L. Berumen
Keyword(s):  
Coral Reef ◽  
Fish Assemblages ◽  
Herbivorous Fish ◽  
Trait Diversity

scholarly journals Unravelling Seascape Patterns of Cryptic Life Stages: Non-Reef Habitat Use in Juvenile Parrotfishes

Diversity ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 376
Author(s):  
Katie T. Sievers ◽  
Rene A. Abesamis ◽  
Abner A. Bucol ◽  
Garry R. Russ
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Dna Analysis ◽  
Fish Assemblages ◽  
Juvenile Fish ◽  
The Philippines ◽  
Integral Group ◽  
Underwater Visual Census

Juvenile fish often use alternative habitats distinct from their adult phases. Parrotfishes are an integral group of coral reef fish assemblages, are targeted in fisheries, are sensitive to reef disturbances, and have been documented as multiple-habitat users. Considering the abundance of research conducted on parrotfishes, very little is known about their juvenile ecology at the species level due to their cryptic and variable coloration patterns. We collected juvenile parrotfishes in non-reef habitats (macroalgal beds, seagrass beds, and lagoons) in the Philippines and used DNA analysis to determine species composition. The results were then compared with data on adult parrotfish abundance from underwater visual census (UVC) surveys in coral reef and non-reef habitats. Collections identified 15 species of juvenile parrotfishes in non-reef habitats, and of these, 10 were also recorded in UVCs as adults. Informed by adult surveys, 42% of the 19 parrotfish species observed as adults were classified as multi-habitat users based on their presence in coral reef and non-reef habitats. When accounting for the occurrence of species as juveniles in non-reef habitats, 93% of the species collected as juveniles would be considered multi-habitat users. Species identified as juveniles in non-reef habitats comprised 50% of the average adult parrotfish density on coral reefs and 58–94% in non-reef habitats. The species richness of juveniles in non-reef habitats was greater than that of adults occupying the same habitats, and the most common adult species observed in UVCs was not collected as juveniles in non-reef habitats. Finally, UVC suggested that 97% of juvenile parrotfish <10-cm total length was present in non-reef habitats compared to coral reefs. These results provide further evidence for ontogenetic movement across habitat boundaries for parrotfish species in a diverse and highly connected tropical seascape. This is one of the few studies to quantify links between nursery and adult habitat in parrotfishes, highlighting the importance of including non-reef habitats in ecological studies of an iconic group of coral reef fish.

STABILITY OF CORAL REEF FISH ASSEMBLAGES IMPACTED BY NUCLEAR TESTS

Ecology ◽  
2005 ◽  
Vol 86 (10) ◽  
pp. 2578-2585 ◽  
Author(s):  
S. Planes ◽  
R. Galzin ◽  
J-P. Bablet ◽  
P. F. Sale
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Fish Assemblages ◽  
Nuclear Tests
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