scholarly journals Fishing effects on spatial distribution and trophic guild structure of the fish community in the Georges Bank region

2000 ◽  
Vol 57 (3) ◽  
pp. 723-730 ◽  
Author(s):  
L Garrison
Keyword(s):  
Spatial Distribution ◽  
Fish Community ◽  
Georges Bank ◽  
Guild Structure ◽  
Trophic Guild

Isotopic trophic guild structure of a diverse subtropical South American fish community

2012 ◽  
Vol 22 (1) ◽  
pp. 66-72 ◽  
Author(s):  
Edward D. Burress ◽  
Alejandro Duarte ◽  
Michael M. Gangloff ◽  
Lynn Siefferman
Keyword(s):  
Fish Community ◽  
South American ◽  
Guild Structure ◽  
Trophic Guild

scholarly journals Structure of three subtropical bat assemblages (Chiroptera) in the Andean rainforests of Argentina

Mammalia ◽  
2016 ◽  
Vol 80 (1) ◽  
Author(s):  
Mariano S. Sánchez
Keyword(s):  
Species Richness ◽  
Relative Abundance ◽  
Seasonal Changes ◽  
Common Species ◽  
Guild Structure ◽  
Trophic Guild ◽  
Long Tail ◽  
Mist Net ◽  
Yungas Forests

AbstractI evaluated bat assemblages in terms of species richness, relative abundance, trophic guild structure, and seasonal changes at three sites along of the Southern Yungas forests. A total of 854 individuals were captured, representing 25 species of three families, with an effort of 27,138 m of mist net opened per hour. Subtropical assemblages showed a similar structure to those from tropical landmark, with a dominance of frugivorous Phyllostomid; in addition, a few species were abundant, followed by a long tail of less common species. However, subtropical sites differed due to the dominance of the genus

Spawning Behaviour and Spatial Distribution of Atlantic Herring on Georges Bank Revealed by Ocean Acoustics Waveguide Remote Sensing

2008 ◽  
Vol 123 (5) ◽  
pp. 3103-3103 ◽  
Author(s):  
Purnima Ratilal ◽  
Zheng Gong ◽  
Daniel Cocuzzo ◽  
Mark Andrews ◽  
Srinivasan Jagannathan ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Spatial Distribution ◽  
Atlantic Herring ◽  
Georges Bank ◽  
Ocean Acoustics ◽  
Spawning Behaviour

scholarly journals Synchrony patterns reveal different degrees of trophic guild vulnerability after disturbances in a coral reef fish community

2019 ◽  
Author(s):  
Jérémie Viviani ◽  
Charlotte Moritz ◽  
Valeriano Parravicini ◽  
David Lecchini ◽  
Gilles Siu ◽  
...  
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Fish Community ◽  
Trophic Guild ◽  
Reef Fish Community

scholarly journals Ekologi Trofik Komunitas Ikan di Perairan Segara Menyan, Subang, Jawa Barat (Trophic Ecology of the Fish Community in Segara Menyan Coastal Lagoon, Subang, West Java)

2015 ◽  
Vol 20 (3) ◽  
pp. 170 ◽  
Author(s):  
Ahmad Zahid ◽  
M.F. Rahardjo ◽  
Lenny S Syafei ◽  
Rini Susilowati
Keyword(s):  
Temporal Variation ◽  
Fish Species ◽  
Trophic Level ◽  
Coastal Lagoon ◽  
Fish Community ◽  
Trophic Ecology ◽  
Diet Breadth ◽  
Gut Contents ◽  
Trophic Guild ◽  
Spatio Temporal

Pengetahuan mengenai ekologi trofik merupakan dasar dalam memahami ekosistem secara keseluruhan yang dapat dijelaskan melalui pola hubungan trofik interspesies ataupun interserikat. Penelitian bertujuan untuk menjelaskan ekologi trofik meliputi indeks trofik dan jenis makanan dominan, serikat dan tingkat trofik, dan variasi spasial dan temporal komunitas ikan di estuari Segara Menyan. Pengambilan ikan contoh dilakukan setiap bulan pada zona berbeda. Ikan contoh dipisahkan berdasarkan waktu dan lokasi pengamatan, dianalisis isi saluran pencernaannya. Analisa data meliputi indeks vakuitas, jumlah total organisme makanan, jenis makanan dominan, luas relung makanan, dan tingkat trofik.  Pada pengamatan 106 spesies ikan, sebanyak 1-380 saluran pencernaan ikan diamati. Sebanyak lima dari 106 spesies memiliki nilai indeks vakuitas “0” dan jumlah makanan yang dikonsumsi bervariasi mulai dari empat hingga 27 jenis makanan. Secara umum, luas relung ikan adalah rendah berkisar 0,20-0,78 dan kebanyakan berada pada kisaran 0,20-0,48. Zooplankton merupakan jenis makanan paling dominan dikonsumsi oleh ikan. Komunitas ikan dikelompokkan dalam tujuh serikat trofik, yaitu detritivora, fitoplanktivora, zooplanktivora, zoobentivora, moluskivora, krustasivora, dan pisivora. Tingkat trofik komunitas ikan berkisar 2,05-4,73. Faktor perubahan ontogenetik, persediaan makanan, karakteristik habitat, dan ruaya beberapa spesies ikan memengaruhi variasi spasio-temporal jejaring makanan di Segara Menyan. Kata kunci: interaksi trofik, laguna, ikan, variasi spasio-temporal, serikat trofik Knowledge of trophic ecology is one way to understanding the whole ecosystem which explained by trophic relationship pattern (interspecies or interguild). The objective research was described of the trophic ecology, i.e. trophic index and dominant prey, trophic guild and trophic level, and spatio-temporal variation of fish community in Segara Menyan coastal lagoon. Fish were collected monthly for one year at three zones. Fish samples were placed in separate labelled plastic bags according to the time scale and location sampling, then gut contents were analyzed. The data of vacuity index, number of prey, prey dominant, diet breadth, and trophic level were analyzed. For each of 106 fish species, between 1 and 380 stomachs, were examined. The vacuity index was also different among species. Five of 106 species had a vacuity index of “0” and total number of food items consumed varied between fish species, ranging from three items to 27 items. The overall diet breadth (Bi) was relatively low among species, ranging from 0.20 to 0.78, with most of them between 0.20 and 0.48. Calanoid copepods comprised the most common food item consumed by all the fishes examined. Fishes occurring can be broadly categorized into seven different trophic guilds. The trophic level of fish communities ranged from 2.05 to 4.73. Spatio-temporal variation of food web was influenced of ontogenetic shift, food availability, habitat characteristic, and migration of some species in Segara Menyan coastal lagoon. Keywords: trophic interaction, lagoon, fishes, spatio-temporal variation, trophic guild

Multiscale spatial distribution of a littoral fish community in relation to environmental variables

2005 ◽  
Vol 50 (4) ◽  
pp. 1344-1344 ◽  
Author(s):  
A. Brind'Amour ◽  
D. Boisclair ◽  
P. Legendre ◽  
D. Borcard
Keyword(s):  
Spatial Distribution ◽  
Environmental Variables ◽  
Fish Community ◽  
Littoral Fish

Seasonal Variation in Guild Structure of the Puget Sound Demersal Fish Community

2008 ◽  
Vol 31 (4) ◽  
pp. 790-801 ◽  
Author(s):  
Jonathan C. P. Reum ◽  
Timothy E. Essington
Keyword(s):  
Seasonal Variation ◽  
Fish Community ◽  
Puget Sound ◽  
Demersal Fish ◽  
Guild Structure

Spatial and dietary overlap in the Georges Bank groundfish community

2000 ◽  
Vol 57 (8) ◽  
pp. 1679-1691 ◽  
Author(s):  
Lance P Garrison
Keyword(s):  
Seasonal Changes ◽  
Fish Community ◽  
Trophic Structure ◽  
Prey Size ◽  
Georges Bank ◽  
Dietary Overlap ◽  
Ontogenetic Changes ◽  
Spatial Partitioning ◽  
Spatial Overlap ◽  
Trophic Resource

Patterns in spatial and trophic resource partitioning in the fish community of the Georges Bank region are identified, accounting for size-based changes in diets. During autumn and spring, this community is divided into geographic assemblages of species that have high spatial overlap. Similarity in spatial distribution is primarily related to similarity in depth preferences, and seasonal differences in species composition within assemblages are related to migrations. There is also important trophic structure within the Georges Bank community separating predators based upon prey size and location in the water column. Ontogenetic changes in diets are an important feature of the trophic structure in this system, particularly in the major piscivores. Seasonal changes in trophic structure reflect both predator and prey migrations. Dietary overlap among predator types is independent of either spatial overlap or depth preferences. There is spatial segregation within trophic guilds, and this spatial partitioning reduces the potential for exploitative competition within this community. Given the observed spatial patterns in trophic structure, the geographic assemblages on Georges Bank may be considered ecologically distinct functional units within this ecosystem.

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