A possible method for evaluating oligotrophy and eutrophication based on nutrient concentration scales

Ignatiades, Lydia; Karydis, Michael; Vounatsou, Penelope

doi:10.1016/0025-326x(92)90561-j

Cited by 149 publications

(82 citation statements)

References 16 publications

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“…On the basis of these values for phosphate and dissolved nitrogen, the lagoon can be classified between the typical mesotrophic and eutrophic marine waters of Greece (Ignatiades et al, 1992).…”

Section: Properties Of Watermentioning

confidence: 99%

Euendolithic shell-boring cyanobacteria and chlorophytes from the saline lagoon Ahivadolimni on Milos Island, Greece

Pantazidou

Louvrou

Economou‐Amilli

2006

European Journal of Phycology

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Samples of typical estuarine mollusc shells (Cerastoderma glauca, Abra ovata and Hydrobia acuta), differing in appearance, size and age, were collected from littoral habitats of a saline water lagoon (Ahivadolimni on Milos Island, Greece). Each shell sample was examined for the distribution, frequency and taxonomy of its shell-boring cyanobacteria and chlorophytes, and the associated attached (epizoic) diatoms. The euendolithic microflora was extracted using Pereny's solution and observed by light microscopy (LM). The results of microbial penetration (traces of euendoliths) were examined by scanning electron microscopy (SEM) after a hypochlorite treatment. The three-dimensional patterns of microbial penetration (boring patterns) were investigated under SEM by applying the resin-casting technique for modern euendoliths. Of the five euendolithic cyanobacteria found, one (Cyanosaccus atticus) was established from Greek marine biotopes, three (Hyella caespitosa var. arbuscula, H. inconstans and H. reptans) are second records and new for Europe, whereas one cyanobacterium (Leptolyngbya terebrans ¼ Plectonema terebrans) and the three euendolithic chlorophytes found (Phaeophila dendroides, Ostreobium quekettii and Gomontia polyriza) show a cosmopolitan distribution. A survey of the diatoms found as epizoic on the mollusc shells (30 taxa) shows that most of them are typical representatives of marine to brackish water of coasts and estuarine areas. A systematic account of all euendoliths found in the mollusc shells is given. The morphological variability of the cyanobacterium Hyella inconstans, and of the chlorophytes Ostreobium quekettii and Gomontia polyriza is presented, with extended taxonomic comments for the latter species. The susceptibility of molluscs to infestation, as well as the morphological variability, world distribution and penetration patterns of the euendoliths within the host mollusc shells are also discussed.

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Section: Properties Of Watermentioning

confidence: 99%

Euendolithic shell-boring cyanobacteria and chlorophytes from the saline lagoon Ahivadolimni on Milos Island, Greece

Pantazidou

Louvrou

Economou‐Amilli

2006

European Journal of Phycology

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“…(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). Due to environmental orientation of these studies, methods of linking multivariate community structure to environmental variables have also been proposal (Clarke & Amsworth, 1993).…”

Section: Multi Criteria Choice Methodsmentioning

confidence: 99%

“…In addition sewage discharges as well as discharges from olive oil processing are also substantial. The nutrient status of the Gulf of Geras has been characterized as a typical mesotrophic environment with eutrophic trends according to a eutrophication classification system for the Aegean Sea (Ignatiades et al, 1992;Kitsiou and Karydis, 1998). The main characteristic of the terrestrial system is the monoculture of olive trees, located mainly on terraced hill slopes.…”

Section: The Study Area: the Physical Environmentmentioning

confidence: 99%

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

2013

Global NEST Journal

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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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“…Other authors (Ignatiades et al 1992;Heyman et al 1984. ), have faced the problem of rough data distributions in a rigorous way, by comparing the observed data frequencies with the expected theoretical frequencies, based on some type of distribution with a known p.d.f.…”

Section: Introductionmentioning

confidence: 94%

Coastal waters monitoring data: frequency distributions of the principal water quality variables

Giovanardi¹,

Finoia²,

Russo³

et al. 2006

J Limnol

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A possible method for evaluating oligotrophy and eutrophication based on nutrient concentration scales

Cited by 149 publications

References 16 publications

Euendolithic shell-boring cyanobacteria and chlorophytes from the saline lagoon Ahivadolimni on Milos Island, Greece

Euendolithic shell-boring cyanobacteria and chlorophytes from the saline lagoon Ahivadolimni on Milos Island, Greece

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

Coastal waters monitoring data: frequency distributions of the principal water quality variables

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