Seasonal studies of limnological aspects of a wetland forest fragment in the Araguaia Plains, Tocantins, Brazil / Estudos sazonais de aspectos limnólogicos de um fragmento florestal inundado na Planície do Araguaia, Tocantins, Brasil

Hiulha de Jesus Silva, Marcus Vinícius Moreira Barbosa, Paula Benevides de Morais

Abstract


Ipucas are ecosystems of natural forest fragments, occurring particularly in the Araguaia plain. It has great influence of flood pulses that occur during the rainy season because they remain flooded during this period and as terrestrial environments in the dry season. The study aimed to evaluate the temporal variation of limnological factors in a Ipuca in the district of the Lagoa da Confusão, Tocantins, through monthly collections between December/2014 and August/2015. The variables measured were: transparency by Secchi disk, turbidity (NTU), dissolved oxygen (mg/L), temperature (°C), hydrogen potential - pH, total dissolved solids (ppm), electrical conductivity (µS/cm) ammonia - NH3 (mg/L) nitrite - NO2 (mg/L) nitrate - NO3 (mg/L), orthophosphate - P (mg/L) ?-chlorophyll (mg/L) and depth of the water blade (cm). The total water transparency and low turbidity values demonstrate the importance of the precipitation of these parameters, as well as the structure of the forest Ipuca supports the values found. The water temperature of Ipucas was influenced by the seasons. The dissolved oxygen was directly related to chlorophyll-?. The concentration of nutrients analyzed showed big swings, probably due to the rapid incorporation of the aquatic communities. However, a homogenization of physical and chemical parameters during the sampling time was observed.


Keywords


flood pulse, Physical and chemical factors, "Ipuca"



DOI: http://dx.doi.org/10.18067/jbfs.v2i4.76

Refbacks

  • There are currently no refbacks.
';



 

Follow us

FacebookTwitter

J. Bioen. Food Sci., Macapá, AP, Brazil. eISSN 2359-2710

  Licença Creative Commons 

The journal is licensed with Creative Commons Atribuição-NãoComercial-CompartilhaIgual 4.0 Internacional

 

Address for correspondence

Professor Victor Hugo Gomes Sales

Journal of Bioenergy and Food Science

Federal Institute of Amapá, Campus Macapá.

Rodovia BR 210 KM 3, s/n Bairro Brasil Novo. CEP: 68.909-398. Macapá, Brazil.

Phone: +55 (96) 3198-2150

jbfs@ifap.edu.br | suporte.jbfs@ifap.edu.br