Centenary shipwrecks reveal the limits of artificial habitats in protecting regional reef fish diversity

2021 ◽  
Author(s):  
Aline P. M. Medeiros ◽  
Beatrice P. Ferreira ◽  
Ricardo Betancur‐R ◽  
Aiara P. L. R. Cardoso ◽  
Marcello R. S. B. C. Matos ◽  
...  
Keyword(s):  
Reef Fish ◽  
Fish Diversity ◽  
Artificial Habitats

scholarly journals DNA Barcoding of Fish in Mischief Reef—Fish Diversity of a Reef Fish Community From Nansha Islands

2021 ◽  
Vol 7 ◽  
Author(s):  
Binbin Shan ◽  
Yan Liu ◽  
Changping Yang ◽  
Yu Zhao ◽  
Gongjun Zhang ◽  
...  
Keyword(s):  
Reef Fish ◽  
Management Strategies ◽  
Genetic Distances ◽  
Coi Gene ◽  
Fish Diversity ◽  
Nansha Islands ◽  
Mitochondrial Coi ◽  
Mitochondrial Coi Gene ◽  
First Time ◽  
Effective Conservation

Development of effective conservation and management strategies requires assessments of ecosystem biodiversity status, especially in understudied hotspots of global fish diversity. Coral reefs are important habitats for fishes, with biodiversity hotspots known globally. We present the first data on molecular diversity of fishes of Mischief Reef, the largest atoll in the Nansha Islands. Partial sequences (650 bp) of mitochondrial COI gene (Cytochrome c oxidase subunit I) are used to identify 209 individuals, representing 101 species, referable to 62 genera, 27 families, 8 orders, and 1 class. The most abundant orders are the Perciformes (176 specimens, 84.21%), Tetraodontiformes (13 specimens, 6.22%), and Beryciformes (13 specimens, 6.22%). Mean Kimura 2-Parameter genetic distances within genera, families, and orders are 4.51, 13.90, and 17.63%, respectively. We record Monotaxis heterodon from this region for the first time—a species that may previously have been misidentified as M. grandoculis. In addition, we recognized possible cryptic species of Lethrinus olivaceus based on significantly diverging barcode sequences. Barcode data provide new insights into fish diversity of Mischief Reef, important for developing further researches on this fauna, and for its conservation.

scholarly journals An updated reef fish checklist of the southernmost Caribbean reef system, with comments on the lionfish invasion

2021 ◽  
Vol 22 (2) ◽  
pp. 70-87
Author(s):  
Camilo Escobar-Sierra ◽  
Viviana Márquez Velázquez ◽  
Rafael Menezes ◽  
Ricardo Souza Rosa ◽  
Alejandro Loaiza-Santana
Keyword(s):  
Reef Fish ◽  
Conservation Status ◽  
Fish Diversity ◽  
Southern Limit ◽  
Reef System ◽  
Reef Fish Assemblage ◽  
Epinephelus Striatus ◽  
Reef Fish Species ◽  
The Caribbean ◽  
Terrestrial Biodiversity

Chocó-Darien is an important biogeographic realm, as it is a terrestrial biodiversity hotspot and the southern limit of the Caribbean reefs. However, to date there are no compiled data on the reef fish assemblage of this region. We provide an updated checklist of marine fishes from the Chocó-Darien reef system (Colombia), with comments on their geographic distribution and conservation status. Peer-reviewed studies, unpublished data and in situ visual censuses were surveyed to compose this checklist. A total of 212 reef fish species across 57 families were compiled, eight of which had no previously published records, one of which (Trachinotus falcatus) is recorded for the first time. The most speciose families were Labridae (n = 21), Gobiidae (n = 18) and Serranidae (n = 17). Fourteen threatened species were recorded, including one critically endangered (Epinephelus striatus) and two endangered (Balistes vetula and Scarus coelestinus). This study contributes to fill the knowledge gaps on the reef fish diversity of the Caribbean southern limit and raises concern on the spread of the lionfish invasion into the Chocó-Darién reef system.

scholarly journals Regional Reef Fish Survey Design and Scaling Using High-Resolution Mapping and Analysis

2021 ◽  
Vol 8 ◽  
Author(s):  
Gregory P. Asner ◽  
Nicholas Vaughn ◽  
Bryant W. Grady ◽  
Shawna A. Foo ◽  
Harish Anand ◽  
...  
Keyword(s):  
High Resolution ◽  
Reef Fish ◽  
Field Survey ◽  
Coastal Development ◽  
Spatially Explicit ◽  
Fish Diversity ◽  
Benthic Habitat ◽  
Live Coral ◽  
Field Sampling ◽  
Study Region

Coral reefs are undergoing changes caused by coastal development, resource use, and climate change. The extent and rate of reef change demand robust and spatially explicit monitoring to support management and conservation decision-making. We developed and demonstrated an airborne-assisted approach to design and upscale field surveys of reef fish over an ecologically complex reef ecosystem along Hawai‘i Island. We also determined the minimal set of mapped variables, mapped reef strata, and field survey sites needed to meet three goals: (i) increase field survey efficiency, (ii) reduce field sampling costs, and (iii) ensure field sampling is geostatistically robust for upscaling to regional estimates of reef fish composition. Variability in reef habitat was best described by a combination of water depth, live coral and macroalgal cover, fine-scale reef rugosity, reef curvature, and latitude as a proxy for a regional climate-ecosystem gradient. In combination, these factors yielded 18 distinct reef habitats, or strata, throughout the study region, which subsequently required 117 field survey sites to quantify fish diversity and biomass with minimal uncertainty. The distribution of field sites was proportional to stratum size and the variation in benthic habitat properties within each stratum. Upscaled maps of reef survey data indicated that fish diversity is spatially more uniform than fish biomass, which was lowest in embayments and near land-based access points. Decreasing the number of field sites from 117 to 45 and 75 sites for diversity and biomass, respectively, resulted in a manageable increase of statistical uncertainty, but would still yield actionable trend data over time for the 60 km reef study region on Hawai‘i Island. Our findings suggest that high-resolution benthic mapping can be combined with stratified-random field sampling to generate spatially explicit estimates of fish diversity and biomass. Future expansions of the methodology can also incorporate temporal shifts in benthic composition to drive continuously evolving fish monitoring for sampling and upscaling. Doing so reduces field-based labor and costs while increasing the geostatistical power and ecological representativeness of field work.

scholarly journals SUMBER DAYA IKAN KARANG DI TAMAN WISATA ALAM GILI MATRA, LOMBOK BARAT

2017 ◽  
Vol 22 (4) ◽  
pp. 225
Author(s):  
Isa Nagib Edrus ◽  
Sasanti Retno Suharti
Keyword(s):  
Reef Fish ◽  
Fish Diversity ◽  
Fish Length ◽  
Study Objective ◽  
Fish Resources ◽  
Parupeneus Multifasciatus ◽  
Marine Park ◽  
Target Fish ◽  
Mulloidichthys Flavolineatus ◽  
Scarus Ghobban

Keanekaragaman dan kelimpahan ikan karang adalah indikator yang baik untuk menilai secara dini adanya dampak pada ekosistem terumbu karang dari sebab kegiatan manusia yang tinggal di sekitar Taman Wisata Alam Laut. Tujuan penelitian ini adalah untuk mengindentifikasi sumber daya ikan karang yang ditinjau dari sisi keanekaragaman jenis, kepadatan individu, komposisi dan biomassa ikan karang dari kelompok fungsional ikan karang. Penelitian dilakukan pada September 2014 dengan metode sensus visual bawah air. Berat ikan didapat dengan cara mensubsitusikan panjang ikan ke rumus panjang berat (W= aXb). Hasil penelitian menunjukkan bahwa terdapat sedikitnya 27 spesies ikan indikator dan 84 spesies ikan target dari 16 famili. Kelompok ikan herbivora dijumpai 36 spesies dari 3 famili, ikan karnivora dijumpai 43 spesies dari 10 famili dan ikan planktivora 5 spesies dari 3 famili. Urutan dari 10 terbesar ikan karang yang dijumpai terdiri dari Ctenochaetus striatus (13 ekor/350m2), Mulloidichthys flavolineatus (10,25 ekor/350m2), Acanthurus olivaceus (8,4 ekor/350m2), Parupeneus multifasciatus (6,5 ekor/350m2), Myripristis kuntee (5,5 ekor/350m2), Kyphosus cinerascens (5,25 ekor/350m2), Lutjanus kasmira (5,13 ekor/350m2), Acanthurus leucocheilus (4,9 ekor/350m2), Scarus ghobban (4,6 ekor/350m2), Parupeneus bifasciatus (4,6 ekor/350m2). Rata-rata kelimpahan ikan karang tertinggi 0,46 individu/m2 dan terendah 0,06 individu/m2. Rata-rata biomassa ikan karang 81,2 kg/350m2 dan terendah 4,69 kg/350m2. Ikan karang target tersedia 1.126 kg per hektar. Reef fish diversity and abundance are good indicators to assess early for impacts on coral reefs ecosystem resulted from human activities living in the adjacent waters of the Gili Matra Tourism Marine Park. The study objective is to identify reef fish resources with regards to species deversity, density, composition and biomass of reef fish functional groups. The work was carried out in September 2014 with a census visual method. Body weight is derived from putting in fish length to weight-length formula (W=aLb). The results show that there were at least 27 species of coralivorous fishes and 84 species of target fish belong to 16 families. There were 36 herbivorous fishes of three families, 43 carnivorous fishes of ten families, and 5 planktivorous fishes of three families. The ten greatest of reef fish biomass were consisted of Ctenochaetus striatus (13 individual/350m2), Mulloidichthys flavolineatus (10.25 individual/350m2), Acanthurus olivaceus (8.4 individual/350m2), Parupeneus multifasciatus (6.5 individual/350m2), Myripristis kuntee (5.5 individual/350m2), Kyphosus cinerascens (5,25 individual/350m2), Lutjanus kasmira (5.13 individual/350m2), Acanthurus leucocheilus (4.9 individual/350m2), Scarus ghobban (4.6 individual/350m2), Parupeneus bifasciatus (4.6 individual/350m2). The abundance of individual reef fish was ranged from the highest of 0.46 individu/m2 to the lowest of 0.06 individual/m2. The biomass of reef fish was ranged from the highest of 81.2 kg/350m2 to the lowest of 4.69 kg/350m2. The target fish was available for 1.126 kg per hectar. 

scholarly journals DIVERSITY OF REEF FISH FUNGSIONAL GROUPS IN TERMS OF CORAL REEF RESILIENCES

2017 ◽  
Vol 22 (2) ◽  
pp. 109
Author(s):  
Isa Nagib Edrus ◽  
Muhammad Abrar Abrar
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Functional Groups ◽  
Data Gathering ◽  
Reef Fishes ◽  
Fish Diversity ◽  
Infrastructure Development ◽  
Management Actions ◽  
Resilience Indicators

Infrastructure development in the particular sites of  Seribu Islands as well as those in main land of Jakarta City increased with coastal population this phenomenon is likely to increase the effects to the adjacent coral waters of Seribu Islands.  Chemical pollutants, sedimentation, and domestic wastes are the common impact and threatening, the survival of coral reef ecosystem. Coral reef resiliences naturaly remained on their processes under many influences of supporting factors. One of the major factor is the role of reef fish functional groups on controling algae growth to recolonize coral juveniles. The  aim of this study to obtain data of a herbivory and other fish functional groups of reef fishes in the Pari Islands that are resilience indicators, or that may indicate the effectiveness of management actions. A conventional scientific approach on fish diversity and abundance data gathering was conducted by the underwater visual cencus. Diversity values of the reef fish functional groups, such as the abundance of individual fish including species, were collected and tabulated by classes and weighted as a baseline to understand the resilience of coral reed based on Obura and Grimsditch (2009) techniques. The results succesfully identified several fish functional groups such as harbivores (21 species), carnivores (13 species) and fish indicator (5 species) occurred in the area. Regarding the aspects of fish density and its diversity, especially herbivorous fish functional group, were presumably in the state of rarely available to support the coral reef resiliences. Resilience indices ranged from 1 (low level) to 3 (moderate level) and averages of the quality levels ranged from 227 to 674. These levels were inadequate to support coral reef recolonization.

Patterns and processes in reef fish diversity

Nature ◽  
2003 ◽  
Vol 421 (6926) ◽  
pp. 933-936 ◽  
Author(s):  
Camilo Mora ◽  
Paul M. Chittaro ◽  
Peter F. Sale ◽  
Jacob P. Kritzer ◽  
Stuart A. Ludsin
Keyword(s):  
Reef Fish ◽  
Fish Diversity ◽  
Patterns And Processes
Sign in / Sign up

Export Citation Format

Share Document