التفاصيل البيبلوغرافية
| العنوان: |
Zooplankton community attributes in an oligo-mesotrophic reservoir: A comparative study of two sampling strategies. |
| المؤلفون: |
Macêdo RL; Núcleo de Estudos Limnológicos, Departamento de Zoologia, Instituto de Biociências, Centro de Ciências Biológicas e da Saúde, Universidade Federal do Estado do Rio de Janeiro/UNIRIO, Av. Pasteur, 458, 22290-240 Rio de Janeiro, RJ, Brazil., Lopes VG; Laboratório de Ecologia Teórica e Síntese/LETS, Instituto de Ciências Biológicas/ICB, Universidade Federal de Goiás/UFG, Av. Esperança, s/n, 64690-900 Goiânia, GO, Brazil., Kozlowskysuzuki B; Departamento de Ecologia e Recursos Marinhos, Instituto de Biociências, Centro de Ciências Biológicas e da Saúde, Universidade Federal do Estado do Rio de Janeiro/UNIRIO, Av. Pasteur, 458, 22290-240 Rio de Janeiro, RJ, Brazil., Branco CWC; Núcleo de Estudos Limnológicos, Departamento de Zoologia, Instituto de Biociências, Centro de Ciências Biológicas e da Saúde, Universidade Federal do Estado do Rio de Janeiro/UNIRIO, Av. Pasteur, 458, 22290-240 Rio de Janeiro, RJ, Brazil. |
| المصدر: |
Anais da Academia Brasileira de Ciencias [An Acad Bras Cienc] 2019; Vol. 91 (1), pp. e20170807. Date of Electronic Publication: 2018 Dec 17. |
| نوع المنشور: |
Comparative Study; Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: Academia Brasileira De Ciencias Country of Publication: Brazil NLM ID: 7503280 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1678-2690 (Electronic) Linking ISSN: 00013765 NLM ISO Abbreviation: An Acad Bras Cienc Subsets: MEDLINE |
| أسماء مطبوعة: |
Original Publication: Rio De Janeiro : Academia Brasileira De Ciencias |
| مواضيع طبية MeSH: |
Zooplankton*, Lakes/*microbiology, Animals ; Biota ; Brazil ; Population Density ; Reference Values ; Research Design ; Seasons ; Species Specificity ; Time Factors |
| مستخلص: |
Studies of the limnetic zooplankton in Brazilian freshwater have been done using several sampling strategies which are frequently associated to personal preferences, system constraints and objectives of the studies. It is known that a better sampling technique exists for each group of investigated zooplankton. So, the challenge is to provide a good sampling method for all groups at once. Regarding this theme we are contributing by pointing out the merits and demerits of two collecting methods of zooplankton widely used in many studies in Brazilian reservoirs to clarify the information about communities' structure in past published and non-published biological data and also find a more useful sampler for future studies. Two simultaneous strategies were used with a 68μm-plankton net: filtration of water collected at sub-surface by bucket and vertical hauls throughout the euphotic zone. A total of 133 taxa was found with both strategies. Rotifers (69 taxa) comprised the group with the highest richness, followed by protozoans (31 taxa), cladocerans (30 taxa) and copepods (5 taxa). Paired t-tests showed significant difference for richness despite none for density in whole period. Spatially, sampling strategies differed in abundance and composition of zooplankton at most sites sampled (except for L1- shallowest site and L4 - deepest site). Temporally, both samplers showed the highest mean abundances at thermal stratification period. In general, the extent of spatial data collected throughout the vertical gradient provided better estimations in the limnetic area for the attributes analyzed: zooplankton density, richness, specific diversity, equitability and cumulative richness. Zooplankton sampling by vertical hauls through the euphotic zone was more efficient, but in order to obtain integrated data and according to the collector's curve it might be useful to adopt both methodologies. |
| تواريخ الأحداث: |
Date Created: 20181221 Date Completed: 20190225 Latest Revision: 20190225 |
| رمز التحديث: |
20240628 |
| DOI: |
10.1590/0001-3765201820170807 |
| PMID: |
30569965 |
| قاعدة البيانات: |
MEDLINE |
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