Assessment of the Water and Habitat Quality of a Mediterranean River (Kalamas, Epirus, Hellas), in Accordance with the EU Water Framework Directive

Lekka, Evanthia; Kagalou, Ifigenia; Lazaridou‐Dimitriadou, M.; Albanis, T. A.; Dakos, Vasilis; Lambropoulou, Dimitra A.; Sakkas, Vasilios A.

doi:10.1002/aheh.200300528

Cited by 17 publications

(6 citation statements)

References 20 publications

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“…These results generally agree with the ones found by Kampa et al [18] and Lazaridou-Dimitriadou [23] in the same river, correlating total suspended solids with tolerant families. Total suspended solids have also been related to observed macrofauna patterns in other rivers of North Greece [17,51,[65][66][67] and most probably constitute one of the determining mechanisms of the distribution of macrozoobenthos in South Balkan river systems.…”

Section: Discussionmentioning

confidence: 99%

Longitudinal impacts of anthropogenic pressures on benthic macroinvertebrate assemblages in a large transboundary Mediterranean river during the low flow period

Chatzinikolaou¹,

Dakos²,

Λαζαρίδου³

2006

Acta hydrochim. hydrobiol.

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Changes in lotic benthic macroinvertebrate assemblages along the transboundary Axios-Vardar River (Greece -Former Yugoslavian Republic of Macedonia) were examined in order to identify major anthropogenic impacts correlated to the benthic community composition during the low flow season. Macrozoobenthos and water samples were collected from 21 sites during summer 2000 and beginning of autumn 2001. Parallel to sampling, the recording of the physical structure of the sites took place using the River Habitat Survey (RHS) method. The multivariate techniques of FUZZY and Canonical Correspondence Analysis (CCA), as well as the Hellenic biotic score (HES) and the habitat quality scores (HMS, HQA) were applied to the data. Total dissolved solids and total suspended solids were found to be the primary factors affecting the structure of the observed communities. Additionally, species composition responded to anthropogenic activities, e. g. untreated sewage effluents, industrial discharges, agricultural runoff, intense water abstraction and impoundment. As expected, macrozoobenthos community composition shifted from sensitive to tolerant taxa where human impacts were most evident.

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Section: Discussionmentioning

confidence: 99%

Longitudinal impacts of anthropogenic pressures on benthic macroinvertebrate assemblages in a large transboundary Mediterranean river during the low flow period

Chatzinikolaou¹,

Dakos²,

Λαζαρίδου³

2006

Acta hydrochim. hydrobiol.

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“…Nikolaidis et al (2005), investigating the presence of harmful microalgal episodes in Greek coastal waters in the period 2000-2004, also noted that most blooms occurred in the Thermaikos and Amvrakikos Gulfs. This could be due to intense eutrophication in both areas resulting from increased nutrient inputs from river discharges and/or anthropogenic factors, such as intensive aquaculture, industrial, sewage and landfarming runoff (Balopoulos & Friligos 1993, Kormas et al 2001, Sylaios & Theocharis 2002, Lekka et al 2004, Dolapsakis et al 2008. On the other hand, the significantly lower Dinophysis spp.…”

Section: Geographical Distribution Of Dinophysis Sppmentioning

confidence: 99%

Climate influence on Dinophysis spp. spatial and temporal distributions in Greek coastal water

Vlamis¹,

Katikou²

2014

Plankton Benthos Res

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Presence of Dinophysis spp., the main phytoplankton genus responsible for the occurrence of lipophilic biotoxins of the okadaic acid group (Diarrhetic Shellfish Poisoning; DSP) in Greek mussels, was recorded in the period 2003-2008 in five major mussel culture areas of Greece. Dinophysis spp. abundances were simultaneously studied with climatological parameters (air temperature, rainfall, wind direction and velocity) and the occurrence of DSP toxic episodes in mussels. Dinophysis spp. blooms occurred with a seasonal periodicity. Highest cell abundances of the bloom appeared steadily between late winter and spring, whereas occurrence of DSP toxicity in mussels followed a similar time pattern, with mouse bioassay-positive samples ranging between 10.2-28.1% of the total samples analysed. Maximum mean Dinophysis spp. counts coincided with air temperatures in the range of 10-20°C; abundances higher than 1,000 cells L 1 were more frequently recorded at air temperatures in the range of 4-20°C in combination with low rainfall and low velocity winds (

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“…Previous studies on Kalamas River have mainly focused on the concentration of pesticides (Albanis et al, 1986) and the assessment of water and habitat quality (Lekka et al, 2004;Kagalou et al, 2012), revealing seasonal differentiations, mostly related with water flow (low in the summertime, dry season; high during fall and wintertime rainy seasons). Previous studies on microorganisms have investigated the presence of pathogens such as Listeria and Salmonella, and their susceptibility to antibiotics in temporal and seasonal scale (Economou et al, 2013), but a whole-community microbial diversity of this important ecosystem has never been assessed to date.…”

Section: Introductionmentioning

confidence: 99%

Anthropogenic effects on bacterial diversity and function along a river‐to‐estuary gradient in Northwest Greece revealed by metagenomics

Meziti

Tsementzi

Kormas

et al. 2016

Environmental Microbiology

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Studies assessing the effects of anthropogenic inputs on the taxonomic and functional diversity of bacterioplankton communities in lotic ecosystems are limited. Here, we applied 16S rRNA gene amplicon and whole-genome shotgun sequencing to examine the microbial diversity in samples from the Kalamas River (Northwest Greece), a mid-size river that runs through agricultural and NATURA-protected areas, but also receives urban sewage from a large city through a manmade ditch. Samples from three different locations between the exit of the ditch and the estuary, during three different months showed that temporal differences of taxonomic and functional diversity were more pronounced than spatial ones, and <1% of total taxa were shared among all samples, revealing a highly dynamic ecosystem. Comparisons of gene diversity with other aquatic habitats showed that only the high flow winter samples resembled more to freshwater environments while samples during the decreased water flow months were dominated by sewage inputs and soil-related organisms. Notably, microbial human gut signals were detectable over background freshwater and soil/runoff related signals, even at tens of kilometers downstream the city. These findings revealed the significance of allochthonous inputs on the composition and dynamics of river bacterial communities, and highlighted the potential of metagenomics for source tracking purposes.

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Assessment of the Water and Habitat Quality of a Mediterranean River (Kalamas, Epirus, Hellas), in Accordance with the EU Water Framework Directive

Cited by 17 publications

References 20 publications

Longitudinal impacts of anthropogenic pressures on benthic macroinvertebrate assemblages in a large transboundary Mediterranean river during the low flow period

Longitudinal impacts of anthropogenic pressures on benthic macroinvertebrate assemblages in a large transboundary Mediterranean river during the low flow period

Climate influence on Dinophysis spp. spatial and temporal distributions in Greek coastal water

Anthropogenic effects on bacterial diversity and function along a river‐to‐estuary gradient in Northwest Greece revealed by metagenomics

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