scholarly journals Species Composition and Seasonal Variation of Fish Assemblages in Sargassum Beds in Gamak Bay, Korea

2011 ◽  
Vol 17 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Ho-Seop Yoon ◽  
Yun-Keun An ◽  
Sang-Duk Choi
Keyword(s):  
Seasonal Variation ◽  
Species Composition ◽  
Fish Assemblages ◽  
Gamak Bay

scholarly journals Seasonal Variation in the Species Composition of Fish Assemblages in the Coastal Waters off Gadeok-do, South Sea, Korea

2013 ◽  
Vol 46 (6) ◽  
pp. 948-956 ◽  
Author(s):  
Jae Mook Jeong ◽  
Joo Myun Park ◽  
Sung Hoi Huh ◽  
Sang Jin Ye ◽  
Hyeon Ji Kim ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Species Composition ◽  
Coastal Waters ◽  
Fish Assemblages ◽  
South Sea

Spatial and seasonal variation in littoral fish assemblages of four estuarine lagoons on the Mexican Pacific coast

2021 ◽  
pp. 102000
Author(s):  
Yureidy Cabrera-Páez ◽  
Consuelo M. Aguilar-Betancourt ◽  
Gaspar González-Sansón ◽  
Angel Hinojosa-Larios
Keyword(s):  
Seasonal Variation ◽  
Pacific Coast ◽  
Fish Assemblages ◽  
Mexican Pacific ◽  
Littoral Fish ◽  
Spatial And Seasonal Variation

scholarly journals Regional and Seasonal Differences in Species Composition and Trophic Groups for Tidepool Fishes of a Western Pacific Island – Taiwan

2018 ◽  
Vol 23 (1) ◽  
pp. 1 ◽  
Author(s):  
Colin K. C. Wen ◽  
Li-Shu Chen ◽  
Kwang-Tsao Shao
Keyword(s):  
Species Composition ◽  
Fish Species ◽  
Fish Assemblages ◽  
Coastal Development ◽  
Species Number ◽  
Pacific Region ◽  
Trophic Groups ◽  
Species Numbers ◽  
Intertidal Fish ◽  
Intertidal Fishes

Spatial and temporal variations in the species composition of assemblages are common in many marine organisms, including fishes. Variations in the fish species composition of subtidal coral reefs have been well documented, however much less is known about such differences for intertidal fish assemblages. This is surprising, given that intertidal fishes are more vulnerable to terrestrial human disturbances. It is critical to evaluate the ecology and biology of intertidal fishes before they are severely impacted by coastal development, especially in developing countries such as those in the tropical western Pacific region where coastal development is rapidly increasing. In this study, we investigated the species composition, abundance, biomass and species number (richness) for intertidal fish assemblages in subtropical (northern) and tropical (southern) Taiwan across four seasons by collecting fishes from tidepools using clove oil. We also examined the gut contents of collected fishes to identify their trophic functional groups in order to investigate regional and seasonal variations for different trophic groups. We found significant differences in the species composition of tidepool fish assemblages between subtropical and tropical Taiwan. Bathygobius fuscus, Abudefduf vaigiensis and Istiblennius dussumieri were dominant species in subtropical Taiwan, whereas Bathygobius coalitus, Abudefduf septemfasciatus and Istiblennius lineatus were dominant in tropical Taiwan. Other species such as Bathygobius cocosensis, Abudefduf sordidus and Istiblennius edentulus were common in both regions. For trophic groups, omnivores and detritivores had or showed trends towards higher species numbers and abundances in the subtropical region, whereas herbivores, planktivores and general carnivores had or showed trends towards higher species numbers and biomass in the tropical region. Overall, many intertidal fish species and trophic groups showed differences in abundance, biomass and species number between subtropical and tropical Taiwan. Further studies on large scale geographical gradients in trophic groups and species compositions in the Indo-west Pacific region are encouraged to assist with ecosystem monitoring and assessment. Keywords: Intertidal fishes, spatio-temporal pattern, feeding guild, diet

Seasonal variation of the zooplankton community of Gamak Bay, Korea

2020 ◽  
Vol 38 (2) ◽  
pp. 231-247
Author(s):  
Seong Yong Moon ◽  
Hee Yong Kim ◽  
Hyun Ju Oh
Keyword(s):  
Seasonal Variation ◽  
Zooplankton Community ◽  
Gamak Bay

Historical Changes in Large River Fish Assemblages of the Americas

2005 ◽  
Keyword(s):  
Species Composition ◽  
Human Population ◽  
Fish Assemblages ◽  
Pacific Salmon ◽  
Large River ◽  
Life Cycles ◽  
Fish Assemblage Structure ◽  
River Region ◽  
Major Industry ◽  
Mackenzie River

<em>Abstract.</em>—The Mackenzie River is the second longest river in North America and drains 1.8 × 10<sup>6</sup> km<sup>2</sup>. of Arctic and sub-Arctic Canada. Thirty-eight fish species have been recorded in the lower Mackenzie River. These species represent a unique mixture of fishes from the Beringian and Agassisian refugia. Many of the species important for subsistence and commercial fisheries in the lower Mackenzie River have complex life cycles and undertake long migrations to spawn, rear, and overwinter. The lower Mackenzie River is a relatively pristine environment with no dams or major industry, a low human population, and species only lightly harvested. This explains why the species composition is relatively stable. However, recently, the effects of climate change may be starting to influence the species composition in terms of greater frequency of rare species such as Pacific salmon. Moreover, a major gas pipeline proposed for the lower Mackenzie River region will probably disturb the fish assemblage structure.

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