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TDI [id:]

Method: Revised form of Trophic Diatom Index [n.a.]

1. General information

1.01 GIG: Central-Baltic, Northern
1.02 Category: Rivers
1.03 BQE: Benthic Diatoms
1.04 Country: Ireland
1.05 Specification:
1.06 Method name: Revised form of Trophic Diatom Index
1.07 Original name: n.a.
1.08 Status: Method is/will be used in First RBMP (2009), Second RBMP (2015)
1.09 Detected pressure(s):
Eutrophication Specification of pressure-impact-relationship: n.a.
1.10 Internet reference:
1.11 Pertinent literature of mandatory character:
1.12 Scientific literature:
1.13 Method developed by:
1.14 Method reported by: n.a.
Email of person reporting the method: n.a.
Email of institute reporting the method: n.a.

2. Data acquisition

Field sampling/surveying

2.01 Sampling/Survey guidelines:
2.02 Short description: n.a.
2.03 Method to select the sampling/survey site or area: n.a.
2.04 Sampling/survey device:
2.05 Specification:
2.06 Sampled/surveyed habitat:
2.07 Sampled/surveyed zones in areas with tidal influence:
2.08 Sampling/survey month(s):
2.09 Number of sampling/survey occasions (in time) to classify site or area:
2.10 Number of spatial replicates per sampling/survey occasion to classify site or area:
2.11 Total sampled/surveyed area or volume or total sampling duration to classify site or area:

Sample processing

2.12 Minimum size of organisms sampled and processed:
2.13 Sample treatment:
2.14 Level of taxonomical identification:
Level: Species/species groups
2.15 Record of abundance:
2.16 Quantification of biomass:
2.17 Other biological data:
2.18 Special cases, exceptions, additions: none
2.19 Comments: none

3. Data evaluation


3.01 List of biological metrics: Trophic Diatom Index
3.02 Does the metric selection differ between types of water bodies: n.a.
3.03 Combination rule for multi-metrics: n.a.
3.04 From which biological data are the metrics calculated:
List of biological metrics: n.a.

Reference conditions

3.05 Scope of reference conditions: n.a.
3.06 Key source(s) to derive reference conditions:
Scope of reference conditions: n.a.
3.07 Reference site characterisation:
Number of sites: n.a.
Geographical coverage: n.a.
Location of sites: n.a.
Data time period: n.a.
Criteria: n.a.
3.08 Reference community description: n.a.
3.09 Results expressed as EQR: n.a.

Boundary setting

3.10 Setting of ecological status boundaries: n.a.
3.11 Boundary setting procedure: n.a.
3.12 "Good status" community: n.a.


3.13 Consideration of uncertainty: n.a.
Specification of uncertainty consideration: n.a.
3.14 Comments: none

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WISER: "Water bodies in Europe: Integrative Systems to assess Ecological status and Recovery"
Online: [date: 2022/01/28]
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