which water body is listed bellow is found near nigeria?
a. gulf of guniea
b. gulf of aden
c. gulf of bothnia
d. gulf of mannar
Answers
Answer:
physicochemical parameters of some manmade ponds in Zaria, northern Nigeria
Interação de algas verdes com parâmetros físico-químicos em lagoas artificiais em Zaria, Norte da Nigéria
Mathias Ahii ChiaI, II, *; Sunday Paul BakoI; Samson O. AlongeI; Abu Kasim AdamuI
IUniversidade Federal de São Carlos, Centro de Ciências Biológicas e da Saúde, Departamento de Botânica, Laboratório de Biotecnologia de Algas, Caixa Postal 676, 13565-905 São Carlos, SP, Brazil
IIAhmadu Bello University, Department of Biological Sciences, PMB 1013, Postal Code 810001, Zaria, Nigeria
ABSTRACT
Green algal species and their association with physicochemical parameters in some manmade ponds in Zaria, Nigeria were studied from November 2005 to August 2006. Phytoplankton and water samples were collected, preserved and analyzed using standard methods. A total of 27 green algal species divided into 16 families were recorded. Shannon diversity indices ranged from 1.75 to 2.39 in all ponds, dominance index from 0.14 to 0.23 and species evenness 0.56 to 0.64. Closterium sp. and Rhizoclonium hookeri Kuetz. were positively associated with the concentration of Fe, however they were negatively correlated (sensitive) to alkalinity, total dissolved solids and electrical conductivity. Stichococcus bacillaris Naegeli, Staurastrum rotula Nordst. and Sphaeroplea sp. had significant positive relationship with biochemical oxygen demand (BOD), Mn, and Mo levels in the water. Pseudouvella americana (Snow) Wille. and Scenedesmus quadricauda (Turp.) de Bréb. showed a close positive association with alkalinity but were sensitive to Fe, BOD, Mn and Mo. The species reported here showed closed association with physicochemical factors in these ponds.
Key words: Chlorophyta, diversity, ecology, lenthic water bodies, trace metals
Answer:
the answer: a) gulf of Guinea