Spatial heterogeneity and seasonal succession of phytoplankton functional groups along the vertical gradient in a mesotrophic reservoir

Luigi Naselli Flores, Kemal Çelik, Tuǧba Ongun Sevindik

Risultato della ricerca: Article

5 Citazioni (Scopus)

Abstract

Tracking morphological variability of phytoplankton is a useful tool to better understand environmental changes. Highly dynamic systems such as reservoirs are convenient environments to investigate the effects of environmental variables on phytoplankton morphology. However, to fully understand the effects of mixing and trophic state on phytoplankton functional group (FG) distribution, the entire water column must be considered since integrated or sub-superficially collected samples, may not adequately represent phytoplankton structure. This idea was tested by analyzing vertical profiles of phytoplankton FGs, their relative biomass, physical and chemical parameters, through monthly samplings over a 2 years period, at three stations located along the longitudinal axis in the monomictic, mesotrophic I kizcetepeler reservoir, northwestern part of Turkey. Thermal stratification occurred in the reservoir from April to September, and zmix/zeu values increased after the breaking down of the thermocline. Nine FGs characterized the seasonal cycle and C-strategist organisms were typical representatives of the assemblages. Nutrient availability and temperature were found to influence phytoplankton dynamics, whereas water withdrawal played a secondary role. Groups Y, P, B, J, F, Lo and Tc showed heterogeneous distribution along the water column and, temperature heterogeneity, high DIN values in surface waters, zmix/zeu values and sedimentation loss were the most important factors regulating their distribution. The results show that phytoplankton morphological spectrum throughout the entire water column, contributes useful information to assess the influence of mixing and trophic state on phytoplankton dynamics in mesotrophic reservoirs.
Lingua originaleEnglish
pagine (da-a)129-141
Numero di pagine13
RivistaANNALES DE LIMNOLOGIE-INTERNATIONAL JOURNAL OF LIMNOLOGY
Volume53
Stato di pubblicazionePublished - 2017

Fingerprint

functional group
phytoplankton
water column
water distribution
nutrient availability
thermocline
temperature profiles
vertical profile
environmental change
surface water
temperature
stratification
Turkey (country)
water
sedimentation
sampling
environmental factors
biomass
organisms
distribution

All Science Journal Classification (ASJC) codes

  • Aquatic Science

Cita questo

@article{a5721edcbae24768854c6d20847de3fb,
title = "Spatial heterogeneity and seasonal succession of phytoplankton functional groups along the vertical gradient in a mesotrophic reservoir",
abstract = "Tracking morphological variability of phytoplankton is a useful tool to better understand environmental changes. Highly dynamic systems such as reservoirs are convenient environments to investigate the effects of environmental variables on phytoplankton morphology. However, to fully understand the effects of mixing and trophic state on phytoplankton functional group (FG) distribution, the entire water column must be considered since integrated or sub-superficially collected samples, may not adequately represent phytoplankton structure. This idea was tested by analyzing vertical profiles of phytoplankton FGs, their relative biomass, physical and chemical parameters, through monthly samplings over a 2 years period, at three stations located along the longitudinal axis in the monomictic, mesotrophic I kizcetepeler reservoir, northwestern part of Turkey. Thermal stratification occurred in the reservoir from April to September, and zmix/zeu values increased after the breaking down of the thermocline. Nine FGs characterized the seasonal cycle and C-strategist organisms were typical representatives of the assemblages. Nutrient availability and temperature were found to influence phytoplankton dynamics, whereas water withdrawal played a secondary role. Groups Y, P, B, J, F, Lo and Tc showed heterogeneous distribution along the water column and, temperature heterogeneity, high DIN values in surface waters, zmix/zeu values and sedimentation loss were the most important factors regulating their distribution. The results show that phytoplankton morphological spectrum throughout the entire water column, contributes useful information to assess the influence of mixing and trophic state on phytoplankton dynamics in mesotrophic reservoirs.",
author = "{Naselli Flores}, Luigi and Kemal {\cC}elik and Sevindik, {Tuǧba Ongun}",
year = "2017",
language = "English",
volume = "53",
pages = "129--141",
journal = "Annales de Limnologie",
issn = "0003-4088",
publisher = "EDP Sciences",

}

TY - JOUR

T1 - Spatial heterogeneity and seasonal succession of phytoplankton functional groups along the vertical gradient in a mesotrophic reservoir

AU - Naselli Flores, Luigi

AU - Çelik, Kemal

AU - Sevindik, Tuǧba Ongun

PY - 2017

Y1 - 2017

N2 - Tracking morphological variability of phytoplankton is a useful tool to better understand environmental changes. Highly dynamic systems such as reservoirs are convenient environments to investigate the effects of environmental variables on phytoplankton morphology. However, to fully understand the effects of mixing and trophic state on phytoplankton functional group (FG) distribution, the entire water column must be considered since integrated or sub-superficially collected samples, may not adequately represent phytoplankton structure. This idea was tested by analyzing vertical profiles of phytoplankton FGs, their relative biomass, physical and chemical parameters, through monthly samplings over a 2 years period, at three stations located along the longitudinal axis in the monomictic, mesotrophic I kizcetepeler reservoir, northwestern part of Turkey. Thermal stratification occurred in the reservoir from April to September, and zmix/zeu values increased after the breaking down of the thermocline. Nine FGs characterized the seasonal cycle and C-strategist organisms were typical representatives of the assemblages. Nutrient availability and temperature were found to influence phytoplankton dynamics, whereas water withdrawal played a secondary role. Groups Y, P, B, J, F, Lo and Tc showed heterogeneous distribution along the water column and, temperature heterogeneity, high DIN values in surface waters, zmix/zeu values and sedimentation loss were the most important factors regulating their distribution. The results show that phytoplankton morphological spectrum throughout the entire water column, contributes useful information to assess the influence of mixing and trophic state on phytoplankton dynamics in mesotrophic reservoirs.

AB - Tracking morphological variability of phytoplankton is a useful tool to better understand environmental changes. Highly dynamic systems such as reservoirs are convenient environments to investigate the effects of environmental variables on phytoplankton morphology. However, to fully understand the effects of mixing and trophic state on phytoplankton functional group (FG) distribution, the entire water column must be considered since integrated or sub-superficially collected samples, may not adequately represent phytoplankton structure. This idea was tested by analyzing vertical profiles of phytoplankton FGs, their relative biomass, physical and chemical parameters, through monthly samplings over a 2 years period, at three stations located along the longitudinal axis in the monomictic, mesotrophic I kizcetepeler reservoir, northwestern part of Turkey. Thermal stratification occurred in the reservoir from April to September, and zmix/zeu values increased after the breaking down of the thermocline. Nine FGs characterized the seasonal cycle and C-strategist organisms were typical representatives of the assemblages. Nutrient availability and temperature were found to influence phytoplankton dynamics, whereas water withdrawal played a secondary role. Groups Y, P, B, J, F, Lo and Tc showed heterogeneous distribution along the water column and, temperature heterogeneity, high DIN values in surface waters, zmix/zeu values and sedimentation loss were the most important factors regulating their distribution. The results show that phytoplankton morphological spectrum throughout the entire water column, contributes useful information to assess the influence of mixing and trophic state on phytoplankton dynamics in mesotrophic reservoirs.

UR - http://hdl.handle.net/10447/247009

UR - http://www.limnology-journal.org/

M3 - Article

VL - 53

SP - 129

EP - 141

JO - Annales de Limnologie

JF - Annales de Limnologie

SN - 0003-4088

ER -