Interannual hydrological variations and ecological phytoplankton patterns in Amazonian floodplain lakes
نویسندگان
چکیده
منابع مشابه
Hydrological pulse regulating the bacterial heterotrophic metabolism between Amazonian mainstems and floodplain lakes
We evaluated in situ rates of bacterial carbon processing in Amazonian floodplain lakes and mainstems, during both high water (HW) and low water (LW) phases (p < 0.05). Our results showed that bacterial production (BP) was lower and more variable than bacterial respiration, determined as total respiration. Bacterial carbon demand was mostly accounted by BR and presented the same pattern that BR...
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although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولINTERANNUAL VARIATIONS OF TROPICAL PRECIPITATION PATTERNS by
Seasonal and annual precipitation anomalies, normalized with respect to the standard deviations are computed for stations between 30*S and 30N. It is established that the annual anomalies are normally distributed. Spatially averaged anomalies are computed for various regions and their representativeness confirmed. Correlations between the annual average normalized anomalies of the various regio...
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We compared fish abundance, diversity and species composition between lakes open (fished) and closed (no-take) to fishing activities in Mamirauá Sustainable Development Reserve in the Central Brazilian Amazon, in order to investigate potential influences of the common-based management. We sampled 1483 fishes from 70 species through gillnet fishing during the low-water season, in seven fished an...
متن کاملThe impact of impoundment on the rotifer communities in two tropical floodplain environments: interannual pulse variations.
Hydrological pulses are the main factor regulating the structure of biological communities in floodplains. Reservoirs above this ecosystem change the environment's dynamics and the community's biodiversity. This study evaluated the structure and stability of the rotifer community in response to changes in hydrological pulses after the Porto Primavera impoundment in the Upper Paraná River floodp...
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ژورنال
عنوان ژورنال: Hydrobiologia
سال: 2018
ISSN: 0018-8158,1573-5117
DOI: 10.1007/s10750-018-3859-6