Spatio-temporal variation of CO2 emission from Chilika Lake, a tropical coastal lagoon, on the east coast of India

2012 ◽  
Vol 113 ◽  
pp. 305-313 ◽  
Author(s):  
Pradipta R. Muduli ◽  
Vishnu Vardhan Kanuri ◽  
R.S. Robin ◽  
B. Charan Kumar ◽  
Sivaji Patra ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Coastal Lagoon ◽  
Co2 Emission ◽  
East Coast ◽  
East Coast Of India ◽  
Chilika Lake ◽  
Tropical Coastal Lagoon ◽  
Spatio Temporal

Length-weight and Length-length relations of four fish species from the Chilika Lake, East coast of India

2017 ◽  
Vol 34 (1) ◽  
pp. 224-226 ◽  
Author(s):  
S. K. Karna ◽  
V. R. Suresh ◽  
M. Mukherjee ◽  
R. K. Manna
Keyword(s):  
Fish Species ◽  
East Coast ◽  
East Coast Of India ◽  
Chilika Lake

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

Spatio-temporal variations of the zooplankton abundance and composition in a West African tropical coastal lagoon (Grand-Lahou, Côte d’Ivoire)

Hydrobiologia ◽  
2008 ◽  
Vol 624 (1) ◽  
pp. 171-189 ◽  
Author(s):  
Raphaël N’doua Etilé ◽  
Aka Marcel Kouassi ◽  
Maryse N’guessan Aka ◽  
Marc Pagano ◽  
Valentin N’douba ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Coastal Lagoon ◽  
Côte D’Ivoire ◽  
Temporal Variations ◽  
West African ◽  
Zooplankton Abundance ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Tropical Coastal Lagoon ◽  
Spatio Temporal

Temporal variation of Mexiconema cichlasomae (Nematoda: Daniconematidae) in the Mayan cichlid fish Cichlasoma urophthalmus and its intermediate host Argulus yucatanus from a tropical coastal lagoon

Parasitology ◽  
2012 ◽  
Vol 140 (3) ◽  
pp. 385-395 ◽  
Author(s):  
A. L. MAY-TEC ◽  
D. PECH ◽  
M. L. AGUIRRE-MACEDO ◽  
J. W. LEWIS ◽  
V. M. VIDAL-MARTÍNEZ
Keyword(s):  
Environmental Factors ◽  
Temporal Variation ◽  
Intermediate Host ◽  
Coastal Lagoon ◽  
Cichlid Fish ◽  
Larval Stages ◽  
Tropical Coastal Lagoon ◽  
Cross Correlations ◽  
Mayan Cichlid ◽  
Recurrent Patterns

SUMMARYThe aim of the present investigation was to determine whether temporal variation in environmental factors such as rainfall or temperature influence long-term fluctuations in the prevalence and mean abundance of the nematode Mexiconema cichlasomae in the cichlid fish Cichlasoma uropthalmus and its crustacean intermediate host, Argulus yucatanus. The study was undertaken in a tropical coastal lagoon in the Yucatan Peninsula (south-eastern Mexico) over an 8-year period. Variations in temperature, rainfall and monthly infection levels for both hosts were analysed using time series and cross-correlations to detect possible recurrent patterns. Infections of M. cichlasomae in A. yucatanus showed annual peaks, while in C. urophthalmus peaks were bi-annual. The latter appear to be related to the accumulation of several generations of this nematode in C. urophthalmus. Rainfall and temperature appear to be key environmental factors in influencing temporal variation in the infection of M. cichlasomae over periods longer than a year together with the accumulation of larval stages throughout time.

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