Effects of trap fishing on reef fish communities

2007 ◽  
Vol 17 (2) ◽  
pp. 111-132 ◽  
Author(s):  
Julie P. Hawkins ◽  
Callum M. Roberts ◽  
Fiona R. Gell ◽  
Calvin Dytham
Keyword(s):  
Reef Fish ◽  
Fish Communities

Community changes of coral reef fishes in Bunaken National Park, North Sulawesi, Indonesia

2013 ◽  
Vol 1 (2) ◽  
pp. 117
Author(s):  
Fakhrizal Setiawan ◽  
Janny D Kusen ◽  
Georis JF Kaligis
Keyword(s):  
Reef Fish ◽  
National Park ◽  
Fish Community ◽  
Time Series Data ◽  
Coral Cover ◽  
Fish Communities ◽  
Reef Fishes ◽  
Series Data ◽  
Fish Community Structure ◽  
Reef Fish Community

In order to look at changes in coral and reef fish communities during the period of 2006 to 2013, this research was carried out at Bunaken National Park (BNP) with 26 observation sites. The existing data and information of reef fish communities in the park generally could not be used as representative for describing the whole region. Percentage of coral cover and fish abundance during the study period shows that Bunaken Island is more similar to other locations. Reef fish community structure as seen from ecological index (H' at all sites being categorized, E category labile and low category C) shows the condition of the reef fish community is still good. Changes in the structure of reef fish communities showed declining conditions compared to 2006, and coral cover continued to decrease compared to 1998 and 2007. Good overall reef fish and coral cover have decreased; it is thought to be related to the pressure in BNP. Some of the pressures in the region were (i) increasing numbers of domestic as well as foreign visitors, (ii) increasing number of residents in the region, as well as the burden of waste and trash from the Bay of Manado. Penelitian dilakukan di Taman Nasional Bunaken (Utara dan Selatan)   pada 26 lokasi  pengamatan untuk menganalisis perubahan struktur komunitas ikan karang melalui kajian dari suatu time series data dari beberapa penelitian sebelumnya. Data primer mengenai ikan-ikan karang diperoleh melalui visual sensus bawah air yang bersamaan dengan observasi terumbu karang menggunakan point intercept transect. Nilai persentase tutupan karang dan kelimpahan ikan menunjukkan bahwa pada lokasi pengamatan Pulau Bunaken paling baik dibandingan lokasi lainnya. Struktur komunitas ikan karang yang dianalisis dengan indeks ekologi menunjukkan indeks keanekaragaman (H’) di semua site masuk kategori sedang, indeks kesamaan (E) kategori labil dan indeks Dominansi (C) kategori rendah. Hasil penelitian ini menunjukkan bahwa kondisi komunitas ikan karang masih baik, sekalipun  perubahan struktur komunitas ikan karang menunjukkan kondisi yang menurun dibandingkan tahun 2006, begitu juga tutupan karang yang terus turun dibandingkan tahun 1998 dan 2007. Secara keseluruhan baik ikan karang maupun tutupan karang mengalami penurunan, hal ini diduga terkait dengan tekanan yang dialami kawasan TN. Bunaken. Salah satu tekanan terhadap kawasan adalah jumlah turis dari dalam maupun luar negeri yang semakin meningkat tiap tahunnya, penambahan jumlah penduduk di dalam kawasan, serta beban limbah dan sampah dari Teluk Manado.

scholarly journals Coral degradation and the structure of tropical reef fish communities

2007 ◽  
Vol 333 ◽  
pp. 243-248 ◽  
Author(s):  
DA Feary ◽  
GR Almany ◽  
GP Jones ◽  
MI McCormick
Keyword(s):  
Reef Fish ◽  
Fish Communities ◽  
Tropical Reef

scholarly journals Inferring True Species Richness and Complete Abundance Distribution in Six Reef-fish Communities from Red-sea, Using the Numerical Extrapolation of Incomplete Samplings

2019 ◽  
pp. 1-21
Author(s):  
Jean Beguinot
Keyword(s):  
Reef Fish ◽  
Red Sea ◽  
Field Data ◽  
Full Range ◽  
Species Abundance ◽  
Fish Communities ◽  
Ecological Communities ◽  
Abundance Distribution ◽  
Internal Organization ◽  
Unrecorded Species

Even when ecological communities are incompletely sampled (which is most frequent in practice, at least for species-rich assemblages including many rare species), it remains possible to retrieve much more information than could be expected first, by applying numerical extrapolation to incomplete field data. Indeed, recently developed procedures of numerical extrapolation of partial samplings now allow to estimate, with fair accuracy, not only the number of the still unrecorded species but, moreover, the distribution of abundances of each of these unrecorded species, thereby making available the full range of the Species Abundance Distribution, despite dealing with incomplete data only. In turn, this allows to address a series of descriptive and functional aspects of the internal organization of species assemblages, which otherwise would have required disposing of truly exhaustive samplings. This approach is applied, here, to the previously reported partial samplings of six neighboring reef-fish communities from Tiran Island, Red Sea, with the goal of better understanding their internal organization in relation to their respective environments. In practice, the numerical completion contributes to avoid erroneous interpretations that would likely stem from considering only the incomplete field data. This point is especially relevant when studying reef-associated communities because accurate understanding of their organization will help guiding and refining at best the protective measures required by these particularly vulnerable communities.

scholarly journals Habitat degradation and fishing effects on the size structure of coral reef fish communities

2010 ◽  
Vol 20 (2) ◽  
pp. 442-451 ◽  
Author(s):  
S. K. Wilson ◽  
R. Fisher ◽  
M. S. Pratchett ◽  
N. A. J. Graham ◽  
N. K. Dulvy ◽  
...  
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Size Structure ◽  
Habitat Degradation ◽  
Fish Communities

Structure of Reef Fish Communities in the Littoral of Colima, Mexico

2005 ◽  
Vol 6 (1) ◽  
pp. 65-75 ◽  
Author(s):  
Juan C. Chavez-Compa . ◽  
Rene Macias-Zamora .
Keyword(s):  
Reef Fish ◽  
Fish Communities

Diurnal space utilization in coral reef fish communities

1978 ◽  
Vol 49 (4) ◽  
pp. 325-332 ◽  
Author(s):  
B. E. Luckhurst ◽  
K. Luckhurst
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Fish Communities ◽  
Space Utilization

The influence of fire-coral colony size and agonistic behaviour of territorial damselfish on associated coral reef fish communities

2015 ◽  
Vol 108 ◽  
pp. 45-54 ◽  
Author(s):  
Isabela Carolina Silva Leal ◽  
Maria Elisabeth de Araújo ◽  
Simone Rabelo da Cunha ◽  
Pedro Henrique Cipresso Pereira
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Colony Size ◽  
Fish Communities ◽  
Agonistic Behaviour ◽  
Coral Colony ◽  
Territorial Damselfish

scholarly journals Understanding the Spatio-Temporal Response of Coral Reef Fish Communities to Natural Disturbances: Insights from Beta-Diversity Decomposition

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0138696 ◽  
Author(s):  
Thomas Lamy ◽  
Pierre Legendre ◽  
Yannick Chancerelle ◽  
Gilles Siu ◽  
Joachim Claudet
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Beta Diversity ◽  
Fish Communities ◽  
Natural Disturbances ◽  
Temporal Response ◽  
Spatio Temporal

scholarly journals Deep-Reef Fish Communities of the Great Barrier Reef Shelf-Break: Trophic Structure and Habitat Associations

Diversity ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 26 ◽  
Author(s):  
Tiffany Sih ◽  
James Daniell ◽  
Thomas Bridge ◽  
Robin Beaman ◽  
Mike Cappo ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Reef Fish ◽  
Fish Communities ◽  
Habitat Associations ◽  
Shelf Break ◽  
Benthic Habitat ◽  
Trophic Groups ◽  
Barrier Reef ◽  
Deep Reef ◽  
Macro Algae

The ecology of habitats along the Great Barrier Reef (GBR) shelf-break has rarely been investigated. Thus, there is little understanding of how associated fishes interact with deeper environments. We examined relationships between deep-reef fish communities and benthic habitat structure. We sampled 48 sites over a large depth gradient (54–260 m) in the central GBR using Baited Remote Underwater Video Stations and multibeam sonar. Fish community composition differed both among multiple shelf-break reefs and habitats within reefs. Epibenthic cover decreased with depth. Deep epibenthic cover included sponges, corals, and macro-algae, with macro-algae present to 194 m. Structural complexity decreased with depth, with more calcified reef, boulders, and bedrock in shallower depths. Deeper sites were flatter and more homogeneous with softer substratum. Habitats were variable within depth strata and were reflected in different fish assemblages among sites and among locations. Overall, fish trophic groups changed with depth and included generalist and benthic carnivores, piscivores, and planktivores while herbivores were rare below 50 m. While depth influenced where trophic groups occurred, site orientation and habitat morphology determined the composition of trophic groups within depths. Future conservation strategies will need to consider the vulnerability of taxa with narrow distributions and habitat requirements in unique shelf-break environments.

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