caa a22 4500 605464812 CHVBK 20210128100259.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10499-015-9886-7 doi (NATIONALLICENCE)springer-10.1007/s10499-015-9886-7 Trophic structure and energy fluxes in a grass carp ( Ctenopharyngodon idellus ) cultured pond ecosystem [Elektronische Daten] [Bo Zhou, Shuanglin Dong, Fang Wang] A grass carp (Ctenopharyngodon idellus) cultured pond in east China was described using an Ecopath with Ecosim (EwE) model, aimed at characterizing trophic structure, the interactions among ecological groups and assessing the efficiency of the pond ecosystem. Fifteen functional groups were incorporated into the model (including artificial feed). Values for production, consumption and respiration were compared with the total system throughput. The results indicated that both primary and secondary productivity were not well utilized in the pond ecosystem, resulting in an accumulation of detritus. The maximum trophic level of any functional group in the model was only 3.14. This indicates a short food chain, typical of simple or immature food webs in terms of structure and dynamics. The different size fractions of phytoplankton made different contributions to the system, and larger-sized phytoplankton were easier to eat by organisms at higher trophic levels. The study indicated that introducing a polyculture system would increase the efficiency and outputs from the pond ecosystem. Springer International Publishing Switzerland, 2015 Ecopath with Ecosim (EwE) nationallicence Ecotrophic efficiency nationallicence Grass carp ( Ctenopharyngodon idellus ) nationallicence Mass-balanced model nationallicence Trophic structure nationallicence Pond ecosystem nationallicence B : Biomass nationallicence COD : Chemical oxygen demand nationallicence DO : Dissolved oxygen nationallicence EwE : Ecopath with Ecosim nationallicence EE : Ecotrophic efficiency nationallicence P / B : Total biological production rate nationallicence TE : Transfer efficiency nationallicence Q / B : Total food consumption rate nationallicence TST : Total system throughput nationallicence Zhou Bo The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, 266003, Qingdao, People's Republic of China aut Dong Shuanglin The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, 266003, Qingdao, People's Republic of China aut Wang Fang The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, 266003, Qingdao, People's Republic of China aut Aquaculture International Springer International Publishing 23/5(2015-10-01), 1313-1324 0967-6120 23:5<1313 2015 23 10499 https://doi.org/10.1007/s10499-015-9886-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10499-015-9886-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhou Bo The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, 266003, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Dong Shuanglin The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, 266003, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Wang Fang The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, 266003, Qingdao, People's Republic of China aut NATIONALLICENCE 773 0- Aquaculture International Springer International Publishing 23/5(2015-10-01), 1313-1324 0967-6120 23:5<1313 2015 23 10499