@article{fdi:010094247,
  title = {{A}mazonian floodplain lakes' carbon-based structure and interactions of plankton communities are constrained by hydrology},
  author = {da {R}osa, {L}. {M}. and {C}ardoso, {L}. {D}. and {C}rossetti, {L}. {O}. and {C}anterle, {E}. {R}. {B}. and da {M}otta-{M}arques, {D}. and {L}obo, {M}tmps and {B}onnet, {M}arie-{P}aule and {C}avalcanti, {J}. {R}. and {G}arnier, {J}. and {N}ogueira, {I}. {D}. and {R}odrigues, {L}. {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}mazonian floodplains exhibit complex hydrological patterns, with flood pulses causing large seasonal fluctuations in water level and hydrodynamics. {R}esearch on flooding dynamics in tropical floodplains has revealed a substantial impact on plankton community structure. {O}ur field study focused on the {C}uruai floodplain, a tropical system within the {A}mazon {B}asin in northern {B}razil. {W}e conducted parallel transects sampling across seven lakes of the floodplain during both rising and falling water periods. {T}he objective is to quantify carbon biomass partition among bacterioplankton, phytoplankton, and zooplankton and to understand how hydrological changes influence plankton communities and their interactions. {P}hytoplankton accounted for the largest fraction of the plankton carbon (> 70%), followed by zooplankton (approximate to 16%), with bacteria contributing the least to the total carbon pool (< 10%). {H}ydrological variations significantly altered the structure and interactions of plankton communities. {D}uring the rising water period, increased water transparency led to higher amounts of bacteria, cryptophytes, and a greater contribution of cladocerans to the zooplankton carbon stock. {T}he greater crustacean zooplankton biomass during the flood coincided with a lower phytoplankton biomass, including cyanobacteria. {B}acterial production seemed to sustain a microbial loop that was relatively independent from the classical food web, and microorganisms were likely a carbon sink during the rising water. {T}he falling water period was marked by a more productive environment, characterized by higher nutrient levels (total nitrogen: 240.0-700.0 <mu>g {L}-1), organic carbon (0.7-12.0 mg {L}-1), and temperatures (29.9-34.9 degrees {C}), which influenced community structure and plankton interactions. {R}otifers experienced a significant biomass increase, ranging from 103.4 mu g {C} {L}-1 during the rising water period to 290.0 mu g {C} {L}-1 during the falling water period, and the biomass ratio between rotifers and bacteria rose from 0.5 to 5.4, on average. {C}opepods also exerted a greater impact on bacterioplankton during this period. {C}yanobacteria's relative contribution doubled during the falling water period, constituting, on average, 42% of the phytoplankton carbon biomass and predominantly consisting of potentially toxic species. {T}his likely disrupted the phytoplankton-zooplankton relationships, and the high primary productivity most likely flowed mainly through microbial pathways in the studied {A}mazonian floodplain system.},
  keywords = {{S}hallow lakes ; {C}yanobacteria ; {C}opepods ; {F}looding ; {F}lushing ; {BRESIL} ; {AMAZONIE}},
  booktitle = {},
  journal = {{A}quatic {S}ciences},
  volume = {87},
  numero = {3},
  pages = {69 [20 p.]},
  ISSN = {1015-1621},
  year = {2025},
  DOI = {10.1007/s00027-025-01197-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010094247},
}