Ecological indices: a biometric approach for assessing eutrophication levels in the marine environment

Karydis, Michael; Tsirtsis, George

doi:10.1016/0048-9697(96)05114-5

Cited by 104 publications

(67 citation statements)

References 25 publications

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“…Other common indices or attributes of the phytoplankton population that have been used in ecological assessments include bulk measurements of biomass and abundance (OSPAR, 2003;CSTT, 1994CSTT, , 1997, taxon diversity (Karydis and Tsirtsis, 1996), seasonal succession (Hallegraeff and Reid, 1986;Belin et al, 1995;Gailhard et al, 2002) and indicator species (Edwards et al, 2001;Paerl et al, 2003). Phytoplankton biomass has typically been used as indicators of nutrient enrichment (CSTT, 1997;Malcolm et al, 2002;Gowen et al, 1992;Painting et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Establishing boundary classes for the classification of UK marine waters using phytoplankton communities

Devlin

Best

Coates

et al. 2007

Marine Pollution Bulletin

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This paper presents a description of three of the proposed phytoplankton indices under investigation as part of a classification framework for UK and ROI marine waters. The three indices proposed for the classification process are (i) phytoplankton biomass measured as chlorophyll, (ii) the frequency of elevated phytoplankton counts measuring individual species and total cell counts and (iii) Seasonal progression of phytoplankton functional groups through the year. Phytoplankton biomass is calculated by a 90th percentile measurement of chlorophyll over the growing season (April to September) compared to a predetermined reference value. Calculation of functional groups and cell counts are taken as proportional counts derived from the presence of the indicator species or group as compared to the total phytoplankton count. Initial boundary conditions for the assessment of high/good status were tested for each index. Chlorophyll reference conditions were taken from thresholds developed for previous EU directives with the setting of offshore concentrations as a reference condition. Thresholds for elevated counts of phytoplankton taxa were taken from previous EU assessments describing counts that could be impact negatively on the environment. Reference seasonal growth curves are established using phytoplankton counts from ''high status'' waterbodies. To test the preliminary boundaries for each index, a risk assessment integrating nutrient enrichment and susceptibility for coastal and transitional waters was carried out to identify WFD waterbodies in England and Wales at different levels of risk. Waterbodies assessed as having low or medium risk from nutrient enrichment were identified as type 1 and type 2 waterbodies, and waterbodies assessed as high risk were identified as type 3 waterbodies. Phytoplankton data was extracted from the risk assigned waterbodies and applied to each phytoplankton index to test the robustness of the preliminary classification ranges for each phytoplankton index.

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Section: Introductionmentioning

confidence: 99%

Establishing boundary classes for the classification of UK marine waters using phytoplankton communities

Devlin

Best

Coates

et al. 2007

Marine Pollution Bulletin

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“…Use of biological indicators measuring diversity (Magurran, 2003;Pielou, 1984) have contributed substantially to the assessment of coastal water quality (Washington, H.G., 1984;Wilm & Dorris, 1968) some with specific emphasis to the classification of euthrophic levels. (Karydis, et al, 1983;, Karydis & Tsirtsis, 1996). In addition univariate (Giovanardi & Tromelini, 1992;Ignatiades, et al, 1992;Stefanou, et al, 2000) as well as multivariate statistical analysis (Heip, et al, 1988 ;Karydis, 1994).…”

Section: Multi Criteria Choice Methodsmentioning

confidence: 99%

Understanding marine eutrophication from agricultural runoff in semi enclosed areas: a short review in the Gulf of Geras, Greece

2013

Issue 2

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The understanding of marine eutrophication in semi enclosed areas due to agricultural runoff, assumes a more integrated approach taking into account the agricultural watershed, seasonal patterns of soil nutrients, rates of erosion and vegetation types. In the present case study in the Gulf of Geras, Lesvos, Greece, the transport of dissolved and solid phase nutrients of terrestrial origin to the marine environment was studied in detail using mathematical modelling. Fifteen criteria describing environmental and socioeconomic aspects were analysed using multi criteria choice methods and a number of scenarios were evaluated. Parallel to that an eutrophication model was used to describe the problem of eutrophication in the marine environment and also to assess the environmental impact from the proposed scenarios. The emphasis was placed in the interconnection between Mediterranean type ecosystem and marine coastal eutrophication. The results showed that the coupling of multi criteria analysis together with simulation modelling, provide a powerful tool for integrated coastal management practices and assessing eutrophic trends in semi enclosed areas.

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“…The sediments of the Saronikos Gulf are particularly enriched in heavy metals and organic compounds, especially around the industrial zone (Elefsis Bay), the Piraeus Port and the old sewage outfall area that was situated about 2 km NW of Piraeus port (PAPAKOSTIDIS et al, 1975;GRIMANIS et al, 1977;VOUTSINOU-TALIADOURI, 1981;ANGELIDIS & GRIMANIS, 1987;KALOGEROPOULOS et al, 1989;VOUTSINOU-TALIADOURI et al, 1989;OCHSENKÜHN & GRIMANIS, 1992). Eutrophication problems have also been documented, as well as major ecological degradation in some areas (FRILIGOS, 1982;FRILIGOS, 1985;FRILIGOS, 1989;FRILIGOS & BARBETSEAS, 1990;THEODOROU, 1995;KARYDIS & TSIRTSIS, 1996;THEODOROU, 1997). For example, zoobenthic studies conducted in the 1970s (ZARKANELLAS & BOGDANOS, 1977) revealed the presence of a 1 km azoic zone close to the outfall.…”

Section: Regional Settingmentioning

confidence: 99%

Surface sediment chemistry in the Olympic Games 2004 Sailing Center (Saronikos Gulf)

Karageorgis

Hatzianestis

2003

Medit. Mar. Sci.

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Construction of the Olympic Games 2004Sailing Center is planned in the Saronikos Gulf, in the area of Agios Kosmas. A multi-disciplinary base-line study was carried out to provide background levels of inorganic and organic pollutants before the construction. Two shallow reefs (water depth 2-3 m) are the predominant features in the area's underwater topography. The reef consists of solid rock formations and pebbles, whereas sandy sediments cover predominantly the remaining seabed. Some pockets of fine-grained sand were identified within the existing marina. Sedimentary heavy metal contents were found to be low, showing only slight heavy metal enrichment, attributed mainly to heavy mineral abundance in the area. A small enrichment for lead could be related to anthropogenic sources. Patterns of low concentrations were observed for organic carbon and organic nitrogen. Conversely, the sediment petroleum hydrocarbon content was found to be relatively high, implying anthropogenic pollution related to ship effluents and increased marine traffic.

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Ecological indices: a biometric approach for assessing eutrophication levels in the marine environment

Cited by 104 publications

References 25 publications

Establishing boundary classes for the classification of UK marine waters using phytoplankton communities

Establishing boundary classes for the classification of UK marine waters using phytoplankton communities

Understanding marine eutrophication from agricultural runoff in semi enclosed areas: a short review in the Gulf of Geras, Greece

Surface sediment chemistry in the Olympic Games 2004 Sailing Center (Saronikos Gulf)

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