Limno-ecological assessment of lentic ecosystems in the western Mediterranean basin (Turkey) using phytoplankton indices

Çelekli, Abuzer; Lekesiz, Ömer

doi:10.1007/s11356-020-10697-0

Cited by 10 publications

(23 citation statements)

References 53 publications

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“…The significant correlation between the index and TP gradient suggested that the modified PTI and Med-PTI (Figs 6a and b) could be appropriate metrics to evaluate the ecological status of Burç Reservoir. Conformities of phytoplankton metrics to evaluate the ecological status of lentic systems have also been demonstrated in 1795 lakes of Europe (Phillips et al, 2013), Mediterranean reservoirs (Marchetto et al, 2009), Pareja Reservoir (Molina-Navarro et al, 2014), and the west Mediterranean basin of Anatolia (Çelekli and Lekesiz, 2021). Besides, the modified PTI had significant positive correlations with environmental factors (e.g., EC, TN, NO3-N, TP, and PO4).…”

Section: Discussionmentioning

confidence: 81%

“…Likely, C. hirundinella dominantly occurred in Karaoun Reservoir, Lebanon during the water mixed conditions and at low light intensity in the late autumn (Fadel et al, 2015). This dinoflagellate has a wide distribution in different biogeographical regions (Reynolds, 2006;Ersanlı and Mustak, 2017;Çelekli and Lekesiz, 2021). Besides, C. hirundinella co-occurred with P. cinctum in the Lake Aygır located at high altitude, Turkey (Çelekli et al, 2020) and Batman Reservoir (Varol, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…This phytoplankton species was found in Lake Aktaş (which is hyper-eutrophic and has a moderate environmental condition) located at a relatively high altitude where phytoplankton species showed the association with nutrients and BOD5 (Çelekli et al, 2020). Besides, P. boryanum has a wide distribution on different ecoregions including English lakes and reservoirs (John et al, 2002), lentic ecosystems in the western Mediterranean basin of Turkey (Çelekli and Lekesiz, 2021), a new re-constructed shallow lentic system of Greece (Latinopoulos et al, 2020), and lakes of France (Laplace-Treyture and Feret, 2016). Mougeotia scalaris had main biovolume peaks in May and June 2019, when the stratification in Burç Reservoir begun and it is ascribed to functional group T whose habitat is well-mixed epilimnia and it shows sensitivity to nutrient deficiency (Reynolds et al, 2002;Padisák et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, using multivariate statistical analyses were suggested to make it easier to elucidate such kind of relationships (Kruk et al, 2017;Çelekli and Lekesiz, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Ecological assessment of Burç Reservoir’s surface water (Turkey) using phytoplankton metrics and multivariate approach

ÇELEKLİ,

ÖZPINAR

2021

Turk J Bot

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The present study was aimed to elucidate relationships between phytoplankton species and stressors using multivariate approaches and assess the environmental condition of Burç Reservoir's surface water using phytoplankton metrics from September 2018 to August 2019 according to implementations of the Water Framework Directive. Burç Reservoir had a characteristic of a warm monomictic pattern. Phytoplankton functional groups (E, F, J, L O , L M , MP, P, S1, T, and W1) were found in the reservoir. A significant difference was found in total biovolume values changed from 2.28 mm 3 /L in November 2018 to 0.51 mm 3 /L in February 2019. The first two axes of canonical correspondence analysis explained 99.2 % of relationships between stressors and phytoplankton assemblages. Explanatory factors such as electrical conductivity (EC), nitrate (NO3-N), total nitrogen (TN), water temperature, calcium (Ca +2 ), precipitation, total organic carbon (TOC), ortho-phosphate (o-PO4), and total phosphorus (TP) significantly drove the spatiotemporal distribution of phytoplankton. Weighted average regression resulted that phytoplankton species such as Gymnodinium saginatum, Snowella lacustris, Ceratium hirundinella, and Pseudanabaena limnetica were closely associated with high TP, while Fragilaria capucina, Navicula trivialis, Cymbella aspera, Ulnaria biceps, Nitzschia palea, and Pseudopediastrum boryanum closely related to the EC. Carlson's trophic state index indicated that Burç Reservoir mainly has a eutrophic characteristic with the assessment of chlorophyll a, total phosphorus, and Secchi disk depth, while it had a euhypertrophic according to the OECD classification. Results of the modified PTI-phytoplankton trophic index (mean = 2.37), the Med-PTI Mediterranean phytoplankton trophic index (mean = 1.96), and the Q assemblage index (mean = 2.58) indicated a moderate ecological status of BurçReservoir. The present study confirmed that phytoplankton assemblages are closely integrated with the environmental condition of Burç Reservoir, which could be assessed by using the PTI and Med-PTI.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Therefore, using multivariate statistical analyses were suggested to make it easier to elucidate such kind of relationships (Kruk et al, 2017;Çelekli and Lekesiz, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Ecological assessment of Burç Reservoir’s surface water (Turkey) using phytoplankton metrics and multivariate approach

ÇELEKLİ,

ÖZPINAR

2021

Turk J Bot

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“…Hydrological periods, such as rainy and dry seasons, can change physical and chemical properties, habitat conditions, and other features, which can affect phytoplankton composition. The health of aquatic ecosystems can be assessed by estimating phytoplankton number and structure (Çelekli & Lekesiz, 2021;Zhu et al, 2021). Studies have been conducted in Anatolia on the phyto-assessment of lentic ecosystems and the interpretation of interactions between stressors and phytoplankton (Çelekli & Özpınar, 2021;Sevindik et al, 2017), but these studies have not been conducted at the river basin scale except by Toudjani et al (2018) and (Çelekli & Lekesiz, 2021).…”

Section: Introductionmentioning

confidence: 99%

Limno‐assessment of phytoplankton composition in relation to environmental conditions of lakes in Antalya River Basin

Çelekli,

Lekesiz,

Çetin

2023

Environmental Quality Mgmt

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Human‐induced factors and global climate change have threatened freshwater resources. Phytoplankton assessments have been used to predict impairment of lentic ecosystems. The aim of the study was to assess species‐stressor associations and the ecological status of eight lakes in the Antalya River basin using phytoplankton indices throughout wet and dry periods according to the Water Framework Directive. The analysis of similarities test revealed a significant difference in the composition of species between the wet (May) and dry (August and November) seasons (p < 0.05). The canonical correspondence analysis indicated that alkalinity, electrical conductivity (EC), pH, total phosphorus (TP), and arsenic (As) had significant effects on the distribution of phytoplankton among lakes. Lake Titreyen was associated with high EC and characterized by pollution‐tolerant species. Lake Eğri was under the pressure of TP and As, while Lake Kırkgöz was associated with relatively high alkalinity. The findings of the phyto‐assessment indicated that Lake Eğri is in good ecological condition, while Lake Duruca is in high ecological condition. Søndergaard metric based on the cyanobacteria biovolume values indicated that Lake Eğri had a moderate ecological status, whereas Lake Duruca had a good environmental condition. To evaluate the ecological status of lakes, the modified phytoplankton trophic index could be a suitable metric. Results of the present study underlined the responses of phytoplankton species in various lakes to environmental variables, which provide crucial ecological information about their ecology and help in the estimation of the ecological status of lakes.

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The effect of salinity and altitude on diatom assemblages and ecological status assessment based on diatom indices in the lentic systems of the Western Mediterranean Basin (Türkiye)

Ongun Sevindik,

Çetin,

Tekbaba

et al. 2024

Ecohydrology

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In this study, littoral diatoms and environmental variables were sampled three times in 2017 (spring, summer, and autumn) to determine the effect of salinity (SAL) and altitude (ALT) on the littoral diatom assemblages (composition, distribution, species richness and diversity) of 12 lentic systems in the Western Mediterranean Basin. Due to the SAL and ALT differences in these systems, they were distinguished under two groups (high elevated freshwater lentic systems [HEF] and hyposaline lentic systems [HYP]). The Bray–Curtis and Canonical Correspondence (CCA) analyses based on diatom species also confirmed this separation. In HYP, SAL and alkalinity (ALK) were the most effective parameters on diatom assemblage. On the other hand, diatom assemblage was mainly affected by ALT in HEF. For the biological assessment of these systems, seven diatom indices were implemented. Although most of the indices showed higher regression with SAL and ALT, they did not give the intended result in the evaluation of HYP. On the other hand, the most consistent index with environmental variables and dominant species in HEF was the Generic Diatom Index (IDG).

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Limno-ecological assessment of lentic ecosystems in the western Mediterranean basin (Turkey) using phytoplankton indices

Cited by 10 publications

References 53 publications

Ecological assessment of Burç Reservoir’s surface water (Turkey) using phytoplankton metrics and multivariate approach

Ecological assessment of Burç Reservoir’s surface water (Turkey) using phytoplankton metrics and multivariate approach

Limno‐assessment of phytoplankton composition in relation to environmental conditions of lakes in Antalya River Basin

The effect of salinity and altitude on diatom assemblages and ecological status assessment based on diatom indices in the lentic systems of the Western Mediterranean Basin (Türkiye)

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