Development and application of a
biological assessment systems
Multimetric Assessment of macroinvertebrates and
Assessment Software
Dr Mario Sommerhäuser and University of Essen
Institute of Ecology
Department of Hydrobiology
Multimetric Assessment and Assessment Software
Biological Assessment
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
Multimetric Assessment and Assessment Software
Main stressors for rivers today (Europe)
Organic pollution
Eutrophication
Hydromorphology
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
Multimetric Assessment and Assessment Software
Indicator value of the different biological quality components
Site
Organic
pollution
Basin
Eutrophication
Acidification
„Holistic approach of WFD“
HydroMorphology/
Migration
short-term
reaction
Long-term
reaction
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
Multimetric Assessment and Assessment Software
Common features of the new German biological assessment
methods for all four aquatic quality components




Type-specific approach
Assessment in comparison with reference conditions (~ high ecological status)
New and specific sampling methods
Multimetric approaches for the analysis of biological results (i. e. species lists)
- combination of different metrics (biocoenotic indicator values/functional
groups): e. g. species number, share of
certain groups like Stoneflies and others, share of functional feeding groups)
- Different reaction againts different stressors
- CEN and ISO standards for European biological indices
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
Multimetric Assessment and Assessment Software
Example for the assessment with biol. quality elements:
Macroinvertebrates
AQEM / PERLODES system
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
Multimetric Assessment and Assessment Software
Content
Content
General concept and development of the multimetric assessment system
(AQEM / PERLODES, Germany)
Design and application European
River Classification Software System Version 3.0
Interpretation of assessment results
Examples of taxa, ecological information, species traits, indicative potential
as a basis for multimetric assessment systems
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Forms of impairments (“Stressors”)
Nutrient enrichment/
organic pollution
Hydromorphology
Land use
Microhabitats
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Multimetric Assessment and Assessment Software
General Concept
Ecological Quality Assessment: Multi-metric concept
„Ecological Status“
Stagnation
Function
Acidification
Global warming
Resistence
Poison
Hydromorphology
Resilience
Diversity
Fine sediments
Trophic structure
Species richness
Pollution
Salt
Sensitivity
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Stressor-specific Assessment
Reference status
Information on the
saprobic status
Taxalist
Information on the
acidic status
Information on
other stressors
Assessment
formula
Assessment
formula
Ecological
status
Assessment
formula
Need for action
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Stressor-specific Assessment
Reference status
Assessment
Modul organic
pollution
formula
Information on the
saprobic status
Taxalist
Information on the
acidic status
Information on
other stressors
Assessment
formula
Modul acidification
Ecological
status
Assessment
formula
Modul general degradation
Need for action
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Stressor-specific Assessment
Taxalist
Information on the
saprobic status
German Standard DIN 38410
(2004)
Information on the
acidic status
Acid quality classes
according to Braukmann & Biss
(2004)
Information on
other stressors
Stream type specific
assessment - formulas:
Metric 1
Metric 2
Metric 3
...
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Stream type-specific Saprobic Index
Example: Saprobic Index = 1.85
reference
good
moderate
poor
bad
Alpine streams
< 1.20
to 1.80
to 2.55
to 3.25
to 4.00
Small mountain streams
< 1.45
to 2.00
to 2.65
to 3.35
to 4.00
Mid-sized mountain streams
< 1.60
to 2.10
to 2.75
to 3.35
to 4.00
Mid-sized sand bottom streams
in the lowlands
< 1.90
to 2.35
to 2.90
to 3.45
to 4.00
(...)
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Stressor-specific Assessment
Taxalist
Information on the
saprobic status
German Standard DIN 38410
(1992)
Information on the
acidic status
Acid quality classes
according to Braukmann & Biss
(2004)
Information on
other stressors
Stream type specific
assessment - formulas:
Metric 1
Metric 2
Metric 3
...
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Stressor-specific Assessment
Taxalist
Information on the
saprobic status
German Standard DIN 38410
(1992)
Information on the
acidic status
Acid quality classes
according to Braukmann & Biss
(2004)
Information on
other stressors
Stream type specific
assessment - formulas:
Metric 1
Metric 2
Metric 3
...
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
What is a Metric?
- Abundance of a mayfly species
General Concept
Multi-metric Index
(Hering et al. 2004a, b;
Lorenz et al. 2004;
Meier et al. 2005)
- Number of mayfly species
- Percentage of all mayfly species on the sample
- Presence of specific indicator species of the mayflies
- Percentage of the filter feeding organisms
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Selection of Metrics
Database 1
Taxalists
Calculation
of ca. 80 metrics
with each taxalist
Correlation analysis
Database 2
Abiotic site data
- land use in the catchment
- hydromorphological quality
Selection of parameters,
which indicate the effects of
degradation
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Metric results & Land use parameters
Correlation Analysis
Metric results & hydromorphological
parameters
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Mid-sized sand bottom streams in the lowlands
Anzahl Taxa
Trichoptera
of Trichoptera
Number
20
16
12
8
4
0
0
2
4
6
8
10
Residential
Siedlungarea
[%] [%]
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Mid-sized sand bottom streams in the lowlands
German
IndexTyp 15
FaunaIndex
GermanFauna
1,8
1,2
0,6
0,0
-0,6
-1,2
-1,8
0
2
4
6
8
10
Siedlung area
[%] [%]
Residential
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Selection of Metrics
Calculation
of ca. 80 metrics
with every taxalist
Correlation analysis
Selection of
Candidate metrics
Selection of parameters,
which indicate the effects
of degradation
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Criteria for the selection of the metrics
High and significant correlation of a metric with hydromorphological
or land use parameters
Candidate metrics for each stream type cover all metric groups
according to the WFD
• taxonomic composition and abundance
• richness/diversity
• sensitive/tolerant taxa
• functional
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
General Concept
Example: Mid-sized mountain streams
Metric type
Metric
Information
Composition
EPT [%]
% of sensitive taxa
and habitats
Richness/diversity
No. of EPTCBO
Diversity of fauna
and habitats
Sensitivity/tolerance
German Fauna Index mid-sized
mountain streams
Presence of specialists
for rare or degraded habitats
Functional groups
Metarhithral [%]
Situation in the catchment
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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ASTERICS
Design and application of the AQEM/STAR European
River Classification System v3.0
Multimetric Assessment and Assessment Software
ASTERICS v.3.0
The current version of the software to calculate the ecological status of streams and
rivers is downloadable for free!
Homepage:
- www.aqem.de or
- www.fliessgewaesserbewertung.de
Options:
- Germany official system
(PERLODES)
- Germany original (AQEM system)
- Several European countries
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
Overview
The assessment-software runs under Windows 98, NT, 2000 and XP.
The data import is normally carried out via MS Excel.
The import table must follow certain rules on layout and format.
The assessment-software calculates the ecological quality status of each imported
taxalist.
The assessment-software calculates about 300 additional metrics for each imported
taxalist.
Note: Yet, no interpretation of the results or recommendations for improvement of
the quality status are given.
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
Data sources
- Data import by Excel- or text-files (ASCII-Format); respect correct format
- Main component of the data import: Key code (encoding every taxon definitely by numbers
and/or letters)
Background for encoding
- Taxon names can have different spellings.
- Taxon names are not enduring – they change often in time according to improvements in
taxonomy. Thus, taxa could have different names in different databases (synonyms).
- A key code is composed of identification numbers, which are assigned to every taxon
(definite identification, independent of spelling or synonymy).
- Codes could be made of numbers, letters or combinations of those.
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
Application of the Assessment Software (in four steps)
(1) Import: Import of an Excel-file or ASCII-file
(2) Settings: choice of key code
(3) Settings: choice of stream type and stressor
Note: The menues 2 and 3 appear gradually
after pressing the “Import” button.
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
Application of the Assessment Software (4 steps)
(1) Import: Import of an Excel file or ASCII file
(2) Settings: choice of key code
(3) Settings: choice of stream type and stressor
(4) Start of calculation
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
Taxalist
ID_ART
4335
4380
4397
4419
4521
4584
4639
4642
5059
5075
5131
5237
5601
5605
5790
5851
5854
6468
6510
6780
6853
6886
6909
6972
6977
8142
8691
8736
8831
12091
12121
19110
TAXON_NAME
Sieg
Aphelocheirus aestivalis
0,8
Baetidae Gen. sp.
4,4
Baetis fuscatus
41,5
Baetis sp.
31,3
Caenis luctuosa
4,4
Ceraclea sp.
2,2
Cheumatopsyche lepida
82,9
Chironomidae Gen. sp.
24,0
Ecdyonurus venosus-Gr.
29,4
Eiseniella tetraedra
13,1
Serratella ignita
30,0
Leuctra geniculata
2,2
Hydropsyche pellucidula
15,3
Hydropsyche sp.
35,7
Leuctra sp.
10,9
Limnius opacus Lv.
102,5
Limnius volckmari Lv.
2,2
Polycentropus flavomaculatus
6,5
Potamanthus luteus
16,3
Rhyacophila sp.
15,3
Simulium sp.
268,4
Sphaerium sp.
2,2
Stenelmis canaliculata Lv.
48,0
Tanypodinae Gen. sp.
39,3
Tanytarsini Gen. sp.
19,6
Hydropsyche incognita
10,3
Asellus aquaticus
24,0
Oligochaeta Gen. sp.
8,7
Turbellaria Gen. sp.
2,2
Limnius opacus Ad.
9,5
Stenelmis canaliculata Ad.
2,2
Rhyacophila dorsalis/nubila
13,9
Results of the metrics
Metrics
sin
sgn
2
0
2,1
0
2
2,1
2,1
0
1,5
0
1,9
1,6
2
0
1,5
0
1,6
2
2,1
0
0
0
1,8
0
0
2
2,7
0
0
0
1,8
0
1,90
zeu
4
0
4
0
4
4
8
0
8
0
4
16
4
0
8
0
8
4
8
0
0
0
4
0
0
4
4
0
0
0
4
0
zhy
zer
zmr
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
1
5
2
1
0
1
0
3
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0,1%
0,7%
3,7%
zhr
0
1
1
2
1
0
0
1
3
2
3
0
2
0
2
3
3
2
0
0
0
0
1
0
0
5
1
0
0
3
1
0
zep
2
2
4
2
2
0
3
1
2
2
3
2
4
0
2
5
5
2
0
0
0
0
2
0
0
4
1
0
0
5
2
0
zmp
zhp
zli
zpr
8
1
4
2
3
0
6
1
0
2
2
7
3
0
1
2
1
2
6
0
0
0
5
0
0
1
2
0
0
2
5
0
0
1
1
1
1
0
1
1
0
0
0
1
0
0
0
0
0
2
4
0
0
0
2
0
0
0
2
0
0
0
2
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
3
0
1
3
0
0
2
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
9,5% 16,7% 17,2%
4,5%
0,7%
2,1%
0,5%
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
Results
(A) Assessment: Display of scores of the Ecological Quality Class together with
the Core Metrics and underlying results.
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
- Level 1: Ecological quality class (integrated assessment)
- Level 2: Quality classes of the single moduls
- Level 3: Results of the core metrics
- Level 4: Results of all metrics
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
ASTERICS v.3.0
Export-Function
The software has the possibility to export
all metric results to Excel
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Interpretation of assessment results
Examples of taxa, ecological information, species traits
and the indicative potential as a basis
for multimetric assessment systems
and the interpretation of results
Multimetric Assessment and Assessment Software
Interpretation of Assessment Results
Mid-sized sand-bottom
lowland streams
Lachte NI
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
Interpretation of Assessment Results
Scores Lachte
Probenahme
Staat
Fließgewässertyp
Taxaliste
Stressor
Ergebnis
Lachte
Germany, official system
Typ 15: Sand- und lehmgeprägte Tieflandflüsse
original
General degradation
Toleranz
Funktionen
Funktionen
Zusammensetzung
Vielfalt, Diversität
- Fauna Index D15/17
- Litoral [%]
- Pelal [%]
- EPT [%] (abundance classes)
- # Trichoptera
result score (0-1)
0,9
1,154
1
3,84
1
4,63
1
53,52
0,74
8
0,67
quality class
high
high
high
high
good
good
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
Interpretation of Assessment Results
Results Lachte
Metric
Value
Abundance [Ind./m²]
561.6
Number of Taxa
35
German Saprobic Index
1.85
Fauna Index Typ 15/17
1.15
Diversity (Shannon-Wiener-Index)
2.32
EPT [%] (abundance classes)
53.5
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
Taxa-Group
Taxalist Lachte
Interpretation of Assessment Results
Taxon name
Ab.
%
Bivalvia
Pisidium sp.
0,8
0,1
Bivalvia
Sphaerium sp.
0,8
0,1
Oligochaeta
Oligochaeta Gen. sp.
2,4
0,4
Hirudinea
Erpobdellidae Gen. sp.
4,8
0,9
Crustacea
Asellus aquaticus
0,8
0,1
Crustacea
Gammarus pulex
1,6
0,3
Crustacea
Gammarus sp.
20,8
3,7
Ephemeroptera
Baetidae Gen. sp.
Ephemeroptera
Serratella ignita
Ephemeroptera
Ephemeroptera
6,4
1,1
103,2
18,4
Heptageniidae Gen. sp.
8,8
1,6
Electrogena sp.
2,4
0,4
Ephemeroptera
Heptagenia sp.
6,4
1,1
Odonata
Gomphus vulgatissimus
0,8
0,1
Odonata
Ophiogomphus cecilia
5,6
1,0
Plecoptera
Leuctra sp.
78,4
14,0
Trichoptera
Lype reducta
1,6
0,3
Trichoptera
Hydropsyche pellucidula
18,4
3,3
Trichoptera
Hydropsyche sp.
90,4
16,1
Trichoptera
Halesus radiatus
2,4
0,4
Trichoptera
Halesus digitatus/tesselatus
Trichoptera
Brachycentrus subnubilus
Trichoptera
Trichoptera
0,8
0,1
147,2
26,2
Sericostoma flavicorne/personatum
0,8
0,1
Lepidostoma hirtum
1,6
0,3
Trichoptera
Mystacides azurea
0,8
0,1
Coleoptera
Limnius volckmari Lv.
8,8
1,6
Coleoptera
Limnius volckmari Ad.
0,8
0,1
Coleoptera
Oulimnius tuberculatus Ad.
4
0,7
Coleoptera
Hydraena sp. Ad.
1,6
0,3
Coleoptera
Oreodytes sanmarkii Ad.
0,8
0,1
Diptera
Atherix ibis
9,6
1,7
Diptera
Atrichops crassipes
0,8
0,1
Diptera
Limoniidae Gen. sp.
0,8
0,1
Diptera
Chironomini Gen. sp.
10,4
1,9
Diptera
Tanytarsini Gen. sp.
3,2
0,6
Diptera
Chironomidae Gen. sp.
12,8
2,3
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
Interpretation of Assessment Results
Stever near Füchtelner Mühle (NRW)
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
Level 1:
Interpretation of Assessment Results
Ecological quality class
poor
Level 2:
Results of the different modules
- Saprobic index
good
SI = 2.29
- General degradation
poor
Score = 0.23
Thus, the reason for the poor status is the general/hydromorphological degradation.
To rise the ecological status the hydromorphology of the
site has to be improved.
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
Level 3:
Interpretation of Assessment Results
Scores of the core metrics
• German Fauna Index 0,09
bad
rare and type specific species are missing
• # Trichoptera
0,13
bad
• EPT-Taxa [%]
0,25
poor
poor habitat diversity, e.g. organic substrates are absent
(woody debris, CPOM)
• Litoral [%]
0,24
poor
• Pelal [%]
0,87
reference
Low species-richness and shifted abundances
Disturbance of natural flow regime (stagnant situations,
absence of shading and high amounts of macrophytes)
Summary:
The single results imply that the site is hydromorphologically extemely impaired.
The effects on the invertebrate community are obvious (Fauna Index, number of
Trichoptera taxa, % Littoral preferences).
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
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Multimetric Assessment and Assessment Software
Taxa-Group
Taxalist Stever
Interpretation of Assessment Results
Taxon name
Gastropoda
Bithynia tentaculata
Gastropoda
Ab.
%
9,6
0,3
Potamopyrgus antipodarum
19,2
0,6
Gastropoda
Valvata sp.
33,6
1,0
Bivalvia
Dreissena polymorpha
19,2
0,6
Bivalvia
Pisidium sp.
4,8
0,1
Oligochaeta
Naididae/Tubificidae Gen. sp.
4,8
0,1
Hirudinea
Erpobdellidae Gen. sp.
4,8
0,1
Hirudinea
Glossiphonia complanata
4,8
0,1
Hirudinea
Helobdella stagnalis
28,8
0,9
Crustacea
Asellus aquaticus
216
6,4
Crustacea
Gammarus roeselii
1526,4
45,2
Crustacea
Gammarus sp.
657,6
19,5
Ephemeroptera
Baetidae Gen. sp.
0,8
0,0
Ephemeroptera
Caenis horaria/robusta
9,6
0,3
Ephemeroptera
Caenis luctuosa/macrura
38,4
1,1
Ephemeroptera
Caenis sp.
57,6
1,7
Ephemeroptera
Cloeon sp.
9,6
0,3
Heteroptera
Corixidae Gen. sp.
4,8
0,1
Coleoptera
Haliplus sp. Ad.
4,8
0,1
Coleoptera
Oulimnius sp. Lv.
33,6
1,0
Trichoptera
Cyrnus trimaculatus
9,6
0,3
Trichoptera
Hydroptila sp.
28,8
0,9
Diptera
Chironomidae Gen. sp.
134,4
4,0
Diptera
Chironomini Gen. sp.
480
14,2
Diptera
Tanytarsini Gen. sp.
33,6
1,0
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
43
Multimetric Assessment and Assessment Software
Ebene
Level 3:3:
Interpretation of Assessment Results
Ergebnisse
dercore
Coremetrics
Metrics
Scores
of the
• German Fauna Index 0,09
bad
• # Trichoptera
0,13
bad
• EPT-Taxa [%]
0,25
poor
• Litoral [%]
0,24
poor
• Pelal [%]
0,87
reference
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
44
Multimetric Assessment and Assessment Software
Standardized sampling method: Multi-Habitat-Sampling
(AQEM method = EUROPEAN „CEN“ Standard since 2010)
25 cm
25 cm
Netzmaschenweite:
0,5 mm
Sand (55 % = 11 Teilproben)
Fallaub (15 % = 3 Teilproben)
Steine (<5% = 0 Teilproben)
Holz (5 % = 1 Teilprobe)
Kies (25 % = 5 Teilproben)
Teilprobe
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
Multimetric Assessment and Assessment Software
Standardized treatment of the samples (sieving and sub-sampling
CETEC Curso “Aplicação de Ecomorfologia Fluvial na Validação da Tipologia de Rios” 16-18/06/2010
Autecology on species level
Ecological indicators
Basis for assessment