Complex bioindication and environmental stress assessment

Fränzle, Otto

doi:10.1016/j.ecolind.2005.08.015

Cited by 67 publications

(31 citation statements)

References 34 publications

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“…Population changes due to growth and reproduction responses will result in alteration of intra-and inter-specific relationships at community level, leading ultimately to changes in the functional integrity of the ecosystem (Fra¨nzle, 2005). Therefore, population responses due to environmental stress could be regarded as an early warning signal of community and ecosystem impairment (Addison, 1996;Attrill and Depledge, 1997;Spurgeon et al, 2005; see also Munkittrick and McCarty, 1995).…”

Section: Introductionmentioning

confidence: 99%

Size distribution approaches for monitoring and conservation of coastal Cymodocea habitats

Orfanidis¹,

Papathanasiou²,

Gounaris³

et al. 2009

Aquatic Conservation

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ABSTRACT1. Cymodocea nodosa's leaf length distribution was studied as an easily measurable indicator to monitor and conserve Macedonian, North Aegean, Greek coastal habitats.2. Three Cymodocea meadows off the eastern Kavala Gulf coast (Nea Karvali, Erateino, Agiasma), with that of Nea Karvali close to an industrial area being the most degraded, were sampled during the seagrass main growing season in July 2004. Two further meadows, one pristine to less degraded (Brasidas, Gulf of Kavala) and one degraded (Biamyl, Inner Thessaloniki Gulf ), were sampled as benchmarks in July 2005. The results were evaluated using Gaussian fit curves, and non-parametric and nested parametric ANOVA on a hierarchy of spatial scales: area (tens of metres), site (hundreds of metres) and meadow (kilometres).3. Frequency (%) distribution of leaf length values and CymoSkew index variation were best associated with anthropogenic stress. Frequency (%) distribution of adult and intermediate photosynthetic leaf length values revealed a unimodal distribution possible to be fitted, at least at pristine to less degraded meadows, by normal distribution (R 2 40.5). 4. Statistically significant variation was estimated for CymoSkew index, a quantitative expression of leaf length asymmetry, on the meadow scale (Po0.001). Biamyl (3.82) and Nea Karvali (3.64) were indicated as heavily degraded meadows, Erateino (2.93) as a degraded meadow, Agiasma (2.18) as a meadow with the first signs of degradation, and Brasidas (1.68) as a pristine to less degraded meadow. These results in combination with other meadow specific biotic parameters were used to suggest a preliminary angiosperm 'Ecological Status Classes' classification scheme useful for the implementation of WFD in the north Aegean Sea.5. The CymoSkew index seems to respond to lower levels of stress than is needed for other more conservative plant modules and therefore, could be regarded as an early warning indicator of Cymodocea habitat degradation.

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Section: Introductionmentioning

confidence: 99%

Size distribution approaches for monitoring and conservation of coastal Cymodocea habitats

Orfanidis¹,

Papathanasiou²,

Gounaris³

et al. 2009

Aquatic Conservation

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“…On the one hand they should allow early detection of environmental stress factors; on the other hand the organism's response to stress should not be rapidly reversible and show persistent and not only transients effects (Fränzle, 2006). If parameters were measured several times in the same study or were reported in studies that are considered as sequential reports on the same experiment, we used only the last sampling date.…”

Section: Data Collectionmentioning

confidence: 99%

Fine roots and ectomycorrhizas as indicators of environmental change

Cudlín

Kieliszewska-Rokicka

Rudawska

et al. 2007

Plant Biosystems - An International Journal Dealing with all As

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Human-induced and natural stress factors can affect fine roots and ectomycorrhizas. Therefore they have potential utility as indicators of environmental change. We evaluated, through meta-analysis, the magnitude of the effects of acidic deposition, nitrogen deposition, increased ozone levels, elevated atmospheric carbon dioxide, and drought on fine roots and ectomycorrhizal (ECM) characteristics. Ectomycorrhizal colonization was an unsuitable parameter for environmental change, but fine root length and biomass could be useful. Acidic deposition had a significantly negative impact on fine roots, root length being more sensitive than root biomass. There were no significant effects of nitrogen deposition or elevated tropospheric ozone on the quantitative root parameters. Elevated CO 2 had a significant positive effect. Drought had a significantly negative effect on fine root biomass. The negative effect of acidic deposition and the positive effect of elevated CO 2 increased over time, indicating that effects were persistent contrary the other factors. The meta-analysis also showed that experimental conditions, including both laboratory and field experiments, were a major source of variation. In addition to quantitative changes, environmental changes affect the species composition of the ectomycorrhizal fungal community.

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“…Biological indicators or bioindicators are considered to give an evaluation of 0929-1393/$ -see front matter © 2011 Elsevier B.V. All rights reserved. doi:10.1016/j.apsoil.2011.07.013 soil functioning because soil organisms have intimate relationships with their surroundings (Franzle, 2006), and then can give information about soil degration or improvement (Bispo et al, 2011). The most widely studied are microorganisms and soil fauna (Huber et al, 2008;Bispo et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Organic viticulture and soil quality: A long-term study in Southern France

Coll

Cadre

Blanchart

et al. 2011

Applied Soil Ecology

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a b s t r a c tThe rate of conversion of conventional vineyards into organic farming is currently increasing. This results in modifications of agricultural practices such as the application of organic manure, the use of tillage or grass-cutting to control weeds and the application of natural pesticides with preventive action. One of the aims of organic farming is to preserve the environment. In this context, the objective of our work was to evaluate the long-term effects of organic viticulture on soil quality. The study was conducted in a commercial vineyard where plots which had been organically managed for 7 (Organic7), 11 (Organic11) and 17 years (Organic17) were compared to conventionally managed plots (Conventional). Soil physical and chemical parameters (bulk density, organic matter, available phosphorus, potassium and copper contents) and biological parameters (soil microbial biomass, density of nematode trophic groups and density and biomass of earthworm ecological categories) were measured. The organic farming led to an increase in soil organic matter, potassium content, soil microbial biomass, plant-feeding and fungalfeeding nematode densities. However, organic farming increased soil compaction, decreased endogeic earthworm density and did not modify the soil micro-food web evaluated by nematofauna analysis. Our study highlights the difficulty to show the benefits of organic farming on global soil quality in this particular pedoclimatic area and set of farming practices.

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Complex bioindication and environmental stress assessment

Cited by 67 publications

References 34 publications

Size distribution approaches for monitoring and conservation of coastal Cymodocea habitats

Size distribution approaches for monitoring and conservation of coastal Cymodocea habitats

Fine roots and ectomycorrhizas as indicators of environmental change

Organic viticulture and soil quality: A long-term study in Southern France

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