Organic enrichment

This pressure is referring to particulate organic matter and is therefore closely associated with the Siltation pressures. Adverse environmental effects include deoxygenation, algal blooms, changes in community structure of benthos and macrophytes.

Benchmark: 
A deposit of 100gC/m2/yr
Examples: 
Resulting from the degraded remains of dead biota & microbiota (land & sea); faecal matter from marine animals; flocculated colloidal organic matter and the degraded remains of: sewage material, domestic wastes, industrial wastes etc. Organic matter can enter marine waters from sewage discharges, aquaculture or terrestrial/agricultural runoff. Black carbon is another source and comes from the products of incomplete combustion (PIC) of fossil fuels and vegetation.
Notes: 
Dissolved organic matter is considered covered within the N and P enrichment pressure. Organic enrichment may lead to eutrophication (see also nutrient enrichment). Excludes fisheries discards.

Outer Hebrides

The tables in this section reflect the output of the workshop (October 2019) when the pressures from human activities were assessed for the period 2014 to 2018 for the region. The summary text below the tables elaborates on some of the points that were made at the workshop.
This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion & sub-surface abrasion. Some expert groups combined these as a single pressure "surface & sub-surface abrasion" whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
The ranking of the pressures in terms of impact is a relative exercise within each region, and is not a statement of their absolute impact. Detailed comparison between regions on the basis of these relative pressure assessments is therefore not advisable.

Main pressures identified

Priority [1] Pressure (FeAST classification) [2] Main healthy and biologically diverse components affected [3] Main contributing FeAST activity /activities to pressure [4] Associated productive assessments [5]
2 Organic enrichment
  • Aquaculture - Finfish
  • Industrial and agricultural liquid discharges
4 Organic enrichment
  • Aquaculture - Finfish
  • Aquaculture - Shellfish

Footnotes:
• This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion and sub-surface abrasion. Some expert groups combined these as a single pressure - Surface & sub-surface abrasion - whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
• The ordering of entries in columns 3, 4 and 5 is not in any particular priority. There isn’t a 1:1 relationship between the entries in columns 3 and 4.
• Where aquaculture is identified as a source of noise pressure, this is due to the potential presence of Acoustic Deterrent Devices (ADDs) in this retrospective (2014-2018) pressure assessment.
• Column 4, FAO gear type added for clarity to fishing types. The gear type annotated next to the FeAST Activity is the International Standard Statistical Classification of Fishing Gear (ISSCFG). This was originally adopted during the 10th Session of the Coordinating Working Party on Fishery Statistics (CWP) (July 1980).
• Note the possibility of terrestrial influence for litter.

Outer Hebrides

West Highlands

The tables in this section reflect the output of the workshop (October 2019) when the pressures from human activities were assessed for the period 2014 to 2018 for the region. The summary text below the tables elaborates on some of the points that were made at the workshop.
This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion & sub-surface abrasion. Some expert groups combined these as a single pressure "surface & sub-surface abrasion" whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
The ranking of the pressures in terms of impact is a relative exercise within each region, and is not a statement of their absolute impact. Detailed comparison between regions on the basis of these relative pressure assessments is therefore not advisable.

Main pressures identified

Priority [1] Pressure (FeAST classification) [2] Main healthy and biologically diverse components affected [3] Main contributing FeAST activity /activities to pressure [4] Associated productive assessments [5]
2 Organic enrichment
  • Aquaculture - Finfish
  • Industrial and agricultural liquid discharges
4 Organic enrichment
  • Aquaculture - Finfish
  • Aquaculture - Shellfish

Footnotes:
• This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion and sub-surface abrasion. Some expert groups combined these as a single pressure - Surface & sub-surface abrasion - whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
• The ordering of entries in columns 3, 4 and 5 is not in any particular priority. There isn’t a 1:1 relationship between the entries in columns 3 and 4.
• Where aquaculture is identified as a source of noise pressure, this is due to the potential presence of Acoustic Deterrent Devices (ADDs) in this retrospective (2014-2018) pressure assessment.
• Column 4, FAO gear type added for clarity to fishing types. The gear type annotated next to the FeAST Activity is the International Standard Statistical Classification of Fishing Gear (ISSCFG). This was originally adopted during the 10th Session of the Coordinating Working Party on Fishery Statistics (CWP) (July 1980).
• Note the possibility of terrestrial influence for litter.

West Highlands

Argyll

The tables in this section reflect the output of the workshop (October 2019) when the pressures from human activities were assessed for the period 2014 to 2018 for the region. The summary text below the tables elaborates on some of the points that were made at the workshop.
This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion & sub-surface abrasion. Some expert groups combined these as a single pressure "surface & sub-surface abrasion" whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
The ranking of the pressures in terms of impact is a relative exercise within each region, and is not a statement of their absolute impact. Detailed comparison between regions on the basis of these relative pressure assessments is therefore not advisable.

Main pressures identified

Priority [1] Pressure (FeAST classification) [2] Main healthy and biologically diverse components affected [3] Main contributing FeAST activity /activities to pressure [4] Associated productive assessments [5]
2 Organic enrichment
  • Aquaculture - Finfish
  • Industrial and agricultural liquid discharges
4 Organic enrichment
  • Aquaculture - Finfish
  • Aquaculture - Shellfish

Footnotes:
• This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion and sub-surface abrasion. Some expert groups combined these as a single pressure - Surface & sub-surface abrasion - whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
• The ordering of entries in columns 3, 4 and 5 is not in any particular priority. There isn’t a 1:1 relationship between the entries in columns 3 and 4.
• Where aquaculture is identified as a source of noise pressure, this is due to the potential presence of Acoustic Deterrent Devices (ADDs) in this retrospective (2014-2018) pressure assessment.
• Column 4, FAO gear type added for clarity to fishing types. The gear type annotated next to the FeAST Activity is the International Standard Statistical Classification of Fishing Gear (ISSCFG). This was originally adopted during the 10th Session of the Coordinating Working Party on Fishery Statistics (CWP) (July 1980).
• Note the possibility of terrestrial influence for litter.

Argyll

Clyde

The tables in this section reflect the output of the workshop (October 2019) when the pressures from human activities were assessed for the period 2014 to 2018 for the region. The summary text below the tables elaborates on some of the points that were made at the workshop.
This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion & sub-surface abrasion. Some expert groups combined these as a single pressure "surface & sub-surface abrasion" whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
The ranking of the pressures in terms of impact is a relative exercise within each region, and is not a statement of their absolute impact. Detailed comparison between regions on the basis of these relative pressure assessments is therefore not advisable.

Main pressures identified

Priority [1] Pressure (FeAST classification) [2] Main healthy and biologically diverse components affected [3] Main contributing FeAST activity /activities to pressure [4] Associated productive assessments [5]
2 Organic enrichment
  • Aquaculture - Finfish
  • Industrial and agricultural liquid discharges
4 Organic enrichment
  • Aquaculture - Finfish
  • Aquaculture - Shellfish

Footnotes:
• This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion and sub-surface abrasion. Some expert groups combined these as a single pressure - Surface & sub-surface abrasion - whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
• The ordering of entries in columns 3, 4 and 5 is not in any particular priority. There isn’t a 1:1 relationship between the entries in columns 3 and 4.
• Where aquaculture is identified as a source of noise pressure, this is due to the potential presence of Acoustic Deterrent Devices (ADDs) in this retrospective (2014-2018) pressure assessment.
• Column 4, FAO gear type added for clarity to fishing types. The gear type annotated next to the FeAST Activity is the International Standard Statistical Classification of Fishing Gear (ISSCFG). This was originally adopted during the 10th Session of the Coordinating Working Party on Fishery Statistics (CWP) (July 1980).
• Note the possibility of terrestrial influence for litter.

Clyde

Solway

The tables in this section reflect the output of the workshop (October 2019) when the pressures from human activities were assessed for the period 2014 to 2018 for the region. The summary text below the tables elaborates on some of the points that were made at the workshop.
This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion & sub-surface abrasion. Some expert groups combined these as a single pressure "surface & sub-surface abrasion" whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
The ranking of the pressures in terms of impact is a relative exercise within each region, and is not a statement of their absolute impact. Detailed comparison between regions on the basis of these relative pressure assessments is therefore not advisable.

Main pressures identified

Priority [1] Pressure (FeAST classification) [2] Main healthy and biologically diverse components affected [3] Main contributing FeAST activity /activities to pressure [4] Associated productive assessments [5]
2 Organic enrichment
  • Aquaculture - Finfish
  • Industrial and agricultural liquid discharges
4 Organic enrichment
  • Aquaculture - Finfish
  • Aquaculture - Shellfish

Footnotes:
• This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion and sub-surface abrasion. Some expert groups combined these as a single pressure - Surface & sub-surface abrasion - whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
• The ordering of entries in columns 3, 4 and 5 is not in any particular priority. There isn’t a 1:1 relationship between the entries in columns 3 and 4.
• Where aquaculture is identified as a source of noise pressure, this is due to the potential presence of Acoustic Deterrent Devices (ADDs) in this retrospective (2014-2018) pressure assessment.
• Column 4, FAO gear type added for clarity to fishing types. The gear type annotated next to the FeAST Activity is the International Standard Statistical Classification of Fishing Gear (ISSCFG). This was originally adopted during the 10th Session of the Coordinating Working Party on Fishery Statistics (CWP) (July 1980).
• Note the possibility of terrestrial influence for litter.

Solway