FN Archimer Export Format
PT J
TI Modeling trophic interactions in Lake Kivu: What roles do exotics play?
BT 
AF VILLANUEVA, Ching-Maria
   ISUMBISHO, M
   KANINGINI, B
   MOREAU, J
   MICHA, J
AS 1:1,2;2:3;3:3;4:2;5:4;
FF 1:PDG-DOP-DCMMN-HMMN-RHPEB;2:;3:;4:;5:;
C1 IFREMER, Lab Ressources Halieut, F-14520 Port En Bessin Huppain, France.
   INP ENSAT, Lab Agron Environm & Ecotoxicol, Dept Trop Fisheries, F-31326 Castanet Tolosan, France.
   UERHA, Dept Biol, Inst Super Pedag Bukavu, Bukavu, Congo.
   Fac Univ Notre Dame Paix, URBO, B-5000 Namur, Belgium.
C2 IFREMER, FRANCE
   ENSAT, FRANCE
   UERHA, CONGO
   UNIV UNAMUR, BELGIUM
SI PORT-EN-BESSIN
SE PDG-DOP-DCMMN-HMMN-RHPEB
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 2.176
TC 37
UR https://archimer.ifremer.fr/doc/2008/publication-4722.pdf
LA English
DT Article
DE ;Lake Kivu;Exotic fishes;Invasion;Transfer efficiency;Food web structure
AB An Ecopath model of the southern part of Lake Kivu, a deep African equatorial lake was constructed to quantitatively describe the possible impact of fish introductions in this ecosystem. This study is considered as an initial step in summarizing ecological and biological information, under a coherent framework, on this ecosystem. Fourteen compartments were considered. As a phytoplankton-based food web, it is observed that key food sources are not fully utilized as transfer efficiencies per trophic levels (TL) varies between 4.5 and 9.4%. Zooplankton plays a major role in transferring organic matter from TL1 to higher TLs due to the abundance of zooplanktivores. Shifts in food preferences and distribution of some of the fish functional groups were observed as a response to competition. The majority of fish biomass concentration is in TL3 (55%). The fishery is concentrated at TL3 and can, therefore, be consider as "immature", sensu Odum. The direct and indirect effects of predation between system components (i.e. fish, invertebrates, phytoplankton and detritus) are quantitatively described and the possible influence and role in the ecosystem's functioning of introduced fish species are discussed. (c) 2007 Elsevier B.V. All rights reserved.
PY 2008
PD APR
SO Ecological Modelling
SN 0304-3800
PU Elsevier
VL 212
IS 3-4
UT 000254667500020
BP 422
EP 438
DI 10.1016/j.ecolmodel.2007.10.047
ID 4722
ER

EF