Phytoplankton functional groups provide a quality assessment method by the Q assemblage index in Lake Mogan (Turkey)

DEMIR N., FAKIOĞLU Ö., DURAL B.

TURKISH JOURNAL OF BOTANY, cilt.38, sa.1, ss.169-179, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 1
  • Basım Tarihi: 2014
  • Doi Numarası: 10.3906/bot-1301-60
  • Dergi Adı: TURKISH JOURNAL OF BOTANY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.169-179
  • Anahtar Kelimeler: Lake Mogan, assemblage index, ecological status, quality assessment, RESERVOIR GARCAS POND, STEADY-STATE, WATER-QUALITY, DEEP, CLASSIFICATION, BIOVOLUME, DIVERSITY, GARDA
  • Atatürk Üniversitesi Adresli: Evet

Özet

The aim of this research is to test the Q phytoplankton assemblage index based on phytoplankton functional groups in Lake Mogan and to provide a quality state estimation by data from 2006. Phytoplankton was sampled at 2 stations of the lake, paralleled with physical (water temperature, Secchi depth, pH, conductivity) and chemical (DO, chlorophyll-a, alkalinity, total hardness, soluble reactive phosphorus, total phosphorus, NO2-N, NO3-N, NH3-N) analyses. The Q index was able to follow the main seasonal changes of the physical and chemical parameters and indicated a moderate ecological status for Lake Mogan. Phytoplankton biomass varied between 0.75 and 10.12 mg/L in the research period, and provided a similar ecological state by Q index, chlorophyll-a, total phosphorus, and Secchi depth. A total of 76 phytoplankton species were identified in the study period, belonging to 12 functional groups. The seasonal succession of dominant functional groups followed this sequence of coda: X2 (Chlamydomonas), Lo (Merismopedia, Peridinium, Chroococcus), F (Botryococcus, Sphaerocystis, Oocystis, Planktosphaeria), S1 (Phormidium, Planktothrix), M (Microcystis), and F (Botryococcus, Oocystis).