@article{fdi:010065404,
  title = {{H}ydrological pulse regulating the bacterial heterotrophic metabolism between {A}mazonian mainstems and floodplain lakes},
  author = {{V}idal, {L}. {O}. and {A}bril, {G}. and {A}rtigas, {L}. {F}. and {M}elo, {M}. {L}. and {B}ernardes, {M}. {C}. and {L}obao, {L}. {M}. and {R}eis, {M}. {C}. and {M}oreira {T}urcq, {P}atricia and {B}enedetti, {M}. and {T}ornisielo, {V}. {L}. and {R}oland, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e evaluated in situ rates of bacterial carbon processing in {A}mazonian floodplain lakes and mainstems, during both high water ({HW}) and low water ({LW}) phases (p < 0.05). {O}ur results showed that bacterial production ({BP}) was lower and more variable than bacterial respiration, determined as total respiration. {B}acterial carbon demand was mostly accounted by {BR} and presented the same pattern that {BR} in both water phases. {B}acterial growth efficiency ({BGE}) showed a wide range (0.2 -23%) and low mean value of 3 and 6%, (in {HW} and {LW}, respectively) suggesting that dissolved organic carbon was mostly allocated to catabolic metabolism. {H}owever, {BGE} was regulated by {BP} in {LW} phase. {C}onsequently, changes in {BGE} showed the same pattern that {BP}. {I}n addition, the hydrological pulse effects on mainstems and floodplains lakes connectivity were found for {BP} and {BGE} in {LW}. {M}ultiple correlation analyses revealed that indexes of organic matter ({OM}) quality (chlorophyll-a, {N} stable isotopes and {C}/{N} ratios) were the strongest seasonal drivers of bacterial carbon metabolism. {O}ur work indicated that: (i) the bacterial metabolism was mostly driven by respiration in {A}mazonian aquatic ecosystems resulting in low {BGE} in either high or {LW} phase; (ii) the hydrological pulse regulated the bacterial heterotrophic metabolism between {A}mazonian mainstems and floodplain lakes mostly driven by {OM} quality.},
  keywords = {bacterial production ; bacterial respiration ; bacterial carbon demand ; bacterial growth efficiency ; hydrological pulse ; {A}mazonian freshwater ; ecosystems ; {BRESIL} ; {AMAZONIE} ; {AMAZONE} {BASSIN} ; {SOLIMOES} {COURS} {D}'{EAU} ; {RIO} {NEGRO} ; {MADEIRA} {COURS} {D}'{EAU} ; {URUBU} {COURS} {D}'{EAU} ; {TAPAJOS} {COURS} {D}'{EAU} ; {CABALIANA} {LAC} ; {JANAUACA} {LAC} ; {MIRITITUBA} {LAC} ; {CANACARI} {LAC} ; {CURUAI} {LAC}},
  booktitle = {},
  journal = {{F}rontiers in {M}icrobiology},
  volume = {6},
  numero = {},
  pages = {art. 1054 [10 p.]},
  ISSN = {1664-302{X}},
  year = {2015},
  DOI = {10.3389/fmicb.2015.01054},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065404},
}