Eutrophication assessment of killary dungarvan and wexford bays
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Eutrophication Assessment of Killary, Dungarvan and Wexford Bays. S.B. Bricker, J.G. Ferreira, Y. Xiao National Oceanic and Atmospheric Administration Longline Environment Institute of Marine Research. Project team meeting for Irish Carrying Capacity Assessment June 11-12, 2007

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Eutrophication Assessment of Killary, Dungarvan and Wexford Bays

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Eutrophication assessment of killary dungarvan and wexford bays

Eutrophication Assessment of Killary, Dungarvan and Wexford Bays

S.B. Bricker, J.G. Ferreira,Y. Xiao

National Oceanic and Atmospheric Administration

Longline Environment

Institute of Marine Research

Project team meeting for Irish Carrying Capacity Assessment

June 11-12, 2007

Dublin, Ireland

http://www.eutro.org

http://www.eutro.us


The problem the assessment approach

Symptoms and Consequences of Nutrient Enrichment

Nutrient InputsPrimarySecondaryConsequences

and ProcessingImpactsImpactsof Symptoms

High algal production (Chl)

Loss of water clarity

Epiphyte problems

Macroalgal problems

Fish kills

Loss of habitat

Human health risks

Loss of tourism

Closed fishing grounds

Increased

N and P concentration

Loss of SAV

Low D.O

Nuisance/Toxic blooms (HABs)

The Problem – The Assessment Approach

ASSETS: Pressure - State - Response

P: Influencing Factors – Natural processing + Human Nutrient Load

S: Overall Eutrophic Condition – Condition of waterbody

R: Future Outlook – What will happen in the future?

http://www.eutro.orghttp://ian.umces.edu/neea


Key aspects of the neea approach

Key Aspects of the NEEA approach

  • The NEEA approach may be divided into three parts:

  • Division of estuaries into homogeneous areas

  • Evaluation of data completeness and reliability

  • Application of indices

  • Tidal freshwater (<0.5 psu)

  • Mixing zone (0.5-25 psu)

  • Seawater zone (>25 psu)

Spatial and temporal quality of datasets (completeness)

Confidence in results (sampling and analytical reliability)

Overall Eutrophic Condition (OEC) index

Overall Human Influence (OHI) index

Determination of Future Outlook (DFO) index

State

Pressure

(Response)


Matrix for determining overall eutrophic condition

1

1

MODERATE HIGH

MODERATE HIGH

HIGH

HIGH

HIGH

HIGH

MODERATE

MODERATE

Primary symptoms high

Primary symptoms high

High primary and

High primary and

High primary and

High primary and

Primary symptoms high

Primary symptoms high

and substantial

and substantial

secondary symptom

secondary symptom

secondary symptom

secondary symptom

symptoms

symptoms

but problems with more

but problems with more

High primary

High primary

secondary symptoms

secondary symptoms

levels indicate serious

levels indicate serious

serious secondary

serious secondary

becoming more

becoming more

eutrophication

eutrophication

eutrophication

eutrophication

symptoms still not being

symptoms still not being

expressed, indicating

expressed, indicating

problems

problems

problems

problems

expressed

expressed

potentially serious

potentially serious

problems

problems

0.6

0.6

MODERATE LOW

MODERATE LOW

MODERATE LOW

MODERATE LOW

HIGH

HIGH

HIGH

HIGH

Primary symptoms

Primary symptoms

Primary symptoms

Primary symptoms

Substantial levels of

Substantial levels of

Substantial levels of

Substantial levels of

MODERATE

MODERATE

beginning to indicate

beginning to indicate

beginning to indicate

beginning to indicate

eutrophic

eutrophic

eutrophic

eutrophic

conditions

conditions

conditions

conditions

Level of expression of

Level of expression of

symptoms

symptoms

Moderate primary

Moderate primary

possible problems

possible problems

possible problems

possible problems

occuring

occuring

occuring

occuring

with secondary

with secondary

with secondary

with secondary

eutrophic

eutrophic

conditions is

conditions is

but still very few

but still very few

but still very few

but still very few

symptoms indicating

symptoms indicating

symptoms indicating

symptoms indicating

substantial

substantial

secondary symptoms

secondary symptoms

secondary symptoms

secondary symptoms

serious problems

serious problems

serious problems

serious problems

expressed

expressed

expressed

expressed

0.3

0.3

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

MODERATE LOW

MODERATE LOW

MODERATE LOW

MODERATE LOW

MODERATE LOW

MODERATE LOW

MODERATE LOW

MODERATE LOW

High secondary

High secondary

High secondary

High secondary

High secondary

High secondary

Moderate secondary

Moderate secondary

Moderate secondary

Moderate secondary

Moderate secondary

Moderate secondary

Moderate secondary

Moderate secondary

LOW

LOW

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms

symptoms

Low primary

Low primary

Level of expression of

Level of expression of

serious problems, but

serious problems, but

serious problems, but

serious problems, but

serious problems, but

serious problems, but

substantial

substantial

substantial

substantial

substantial

substantial

substantial

substantial

eutrophic

eutrophic

eutrophic

eutrophic

eutrophic

eutrophic

eutrophic

eutrophic

eutrophic

eutrophic

conditions is

conditions is

low primary indicates

low primary indicates

low primary indicates

low primary indicates

low primary indicates

low primary indicates

conditions, but low

conditions, but low

conditions, but low

conditions, but low

conditions, but low

conditions, but low

conditions, but low

conditions, but low

minimal

minimal

other factors may also

other factors may also

other factors may also

other factors may also

other factors may also

other factors may also

primary indicates other

primary indicates other

primary indicates other

primary indicates other

primary indicates other

primary indicates other

primary indicates other

primary indicates other

be involved in causing

be involved in causing

be involved in causing

be involved in causing

be involved in causing

be involved in causing

factors may be involved

factors may be involved

factors may be involved

factors may be involved

factors may be involved

factors may be involved

factors may be involved

factors may be involved

in causing the conditions

in causing the conditions

conditions

conditions

conditions

0

0

0.3

0.3

0.6

0.6

1

1

Low secondary

Low secondary

Moderate secondary

Moderate secondary

High secondary

High secondary

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms

Matrix for Determining Overall Eutrophic Condition

Overall level of expression of

Overall level of expression of

e

e

eutrophic conditions

utrophic conditions

1

1

1

1

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

HIGH

HIGH

HIGH

HIGH

MODERATE

MODERATE

MODERATE

MODERATE

Primary symptoms high

Primary symptoms high

Primary symptoms high

Primary symptoms high

High primary and

High primary and

High primary and

High primary and

Primary symptoms high

Primary symptoms high

Primary symptoms high

Primary symptoms high

and substantial

and substantial

and substantial

and substantial

secondary symptom

secondary symptom

secondary symptom

secondary symptom

symptoms

symptoms

symptoms

symptoms

but problems with more

but problems with more

but problems with more

but problems with more

High primary

High primary

High primary

High primary

secondary symptoms

secondary symptoms

secondary symptoms

secondary symptoms

levels indicate serious

levels indicate serious

levels indicate serious

levels indicate serious

serious secondary

serious secondary

serious secondary

serious secondary

becoming more

becoming more

becoming more

becoming more

eutrophication

eutrophication

eutrophication

eutrophication

symptoms still not being

symptoms still not being

symptoms still not being

symptoms still not being

expressed, indicating

expressed, indicating

expressed, indicating

expressed, indicating

problems

problems

problems

problems

expressed

expressed

expressed

expressed

potentially serious

potentially serious

potentially serious

potentially serious

problems

problems

problems

problems

0.6

0.6

0.6

0.6

MODERATE LOW

MODERATE LOW

HIGH

HIGH

HIGH

HIGH

Primary symptoms

Primary symptoms

Substantial levels of

Substantial levels of

Substantial levels of

Substantial levels of

MODERATE

MODERATE

MODERATE

MODERATE

beginning to indicate

beginning to indicate

eutrophic

eutrophic

eutrophic

eutrophic

conditions

conditions

conditions

conditions

Level of expression of

Level of expression of

Level of expression of

Level of expression of

symptoms

symptoms

symptoms

symptoms

Moderate primary

Moderate primary

Moderate primary

Moderate primary

possible problems

possible problems

occuring

occuring

occuring

occuring

with secondary

with secondary

with secondary

with secondary

eutrophic

eutrophic

eutrophic

eutrophic

conditions is

conditions is

conditions is

conditions is

but still very few

but still very few

symptoms indicating

symptoms indicating

symptoms indicating

symptoms indicating

substantial

substantial

substantial

substantial

secondary symptoms

secondary symptoms

serious problems

serious problems

serious problems

serious problems

expressed

expressed

0.3

0.3

0.3

0.3

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

MODERATE HIGH

High secondary

High secondary

High secondary

High secondary

LOW

LOW

LOW

LOW

symptoms indicate

symptoms indicate

symptoms indicate

symptoms indicate

symptoms

symptoms

symptoms

symptoms

Low primary

Low primary

Low primary

Low primary

Level of expression of

Level of expression of

Level of expression of

Level of expression of

serious problems, but

serious problems, but

serious problems, but

serious problems, but

eutrophic

eutrophic

eutrophic

eutrophic

conditions is

conditions is

conditions is

conditions is

low primary indicates

low primary indicates

low primary indicates

low primary indicates

minimal

minimal

minimal

minimal

other factors may also

other factors may also

other factors may also

other factors may also

be involved in causing

be involved in causing

be involved in causing

be involved in causing

in causing the conditions

in causing the conditions

in causing the conditions

in causing the conditions

conditions

conditions

conditions

conditions

0

0

0

0

0.3

0.3

0.3

0.3

0.6

0.6

0.6

0.6

1

1

1

1

Low secondary

Low secondary

Low secondary

Low secondary

Moderate secondary

Moderate secondary

Moderate secondary

Moderate secondary

High secondary

High secondary

High secondary

High secondary

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms

symptoms


Eutrophication assessment of killary dungarvan and wexford bays

http://www.eutro.org

http://ian.umces.edu/neea


Summary characteristics data sources

Summary Characteristics – Data Sources


Killary harbour 1981

Killary Harbour 1981

ASSETS application to Killary Harbour

Mixing zone

Seawater

*HABs from offshore, advect into system


Dungarvan 1992 2006

Dungarvan 1992-2006

ASSETS application to Dungarvan

Seawater zone


Wexford 1992 2006

Wexford 1992-2006

Mixing zone

Seawater


Wexford 1992 20061

Wexford 1992-2006

ASSETS application to Wexford


Preliminary results for three bays

Preliminary Results for Three Bays

BayChlMacroDOSAVHABOEC

KillaryLLUUL*L

DungarvanHUNPUNPM

WexfordHUNPUNPM

Limited by missing data, for Killary by old data

*from offshore, advect into system


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