@article{PAR00002018, title = {{T}he fish fauna of {B}rokopondo {R}eservoir, {S}uriname, during 40 years of impoundment}, author = {{M}ol, {J}. {H}. and {M}{\'e}rona de, {B}ernard and {O}uboter, {P}. {E}. and {S}ahdew, {S}.}, editor = {}, language = {{ENG}}, abstract = {{W}e investigated long-terrn changes in the fish fauna of {B}rokopondo {R}eservoir, {S}uriname, the first large reservoir (1560 km(2)) that was created in tropical rainforest. {B}efore closure of the dam in 1964, the fish fauna of {S}uriname {R}iver had 172 species, high diversity and high evenness. {T}he riverine fauna was dominated by small-sized species, but no single species was dominant in numbers. {L}arge catfishes were dominant in biomass. {S}pecies were evenly distributed over riverine habitats: rapids, tributaries and main channel. {F}our years after closure of the dam, only 62 fish species were collected from {B}rokopondo {R}eservoir, but the composition of the fish fauna was still changing. {T}he reservoir fauna in 1978 was very similar to the reservoir fauna in 2005, indicating that a stable equilibrium had been reached 14 years after closure of the dam. {T}he reservoir fauna had 41 species, low diversity and low evenness. {M}ost species of {S}uriname {R}iver and its tributaries with strict habitat requirements did not survive in {B}rokopondo {R}eservoir. {F}ish community structure was different among four habitats of {B}rokopondo {R}eservoir. {T}he open-water habitat (10 species) was dominated by the piscivores {S}errasalmus rhombeus, {A}cestrorhynchus microlepis and {C}ichla ocellaris and their prey {B}ryconops melanurus and two {H}emiodus species. {B}. melanurus fed on zooplankton, {C}ulicinae pupae and terrestrial invertebrates. {H}emiodus fed on fine flocculent detritus, demonstrating that the detritus-based food chain was still important in late stages of reservoir development. {S}errasalmus rhombeus also fed on peccaries that drowned when swimming across the large reservoir in rough weather. {T}he shore community (27 species) was dominated by seven cichlids, but early stages and juveniles of the open-water species {S}. rhombeus and {B}. melanurus also occurred in the shore habitat. {F}ish biomass in the shore habitat was 66.5 59.9 kg ha(-1). {T}he cichlid {G}eophagus surinamensis and the characid {B}. melanurus had a lower biomass in {B}rokopondo {R}eservoir than in {S}uriname {R}iver. {S}errasalmus rhombeus showed reduced body length in {B}rokopondo {R}eservoir as compared to riverine populations.}, keywords = {dam ; man made lake ; {N}eotropical ; river ; fish community}, booktitle = {}, journal = {{N}eotropical {I}chthyology}, volume = {5}, numero = {3}, pages = {351--364,365--368}, ISSN = {1679-6225}, year = {2007}, DOI = {10.1590/{S}1679-62252007000300015}, URL = {https://www.documentation.ird.fr/hor/{PAR}00002018}, }