Identification

Title

Harbour porpoise Special Area of Conservation seasonal areas

Abstract

This resource contains shapefiles showing the seasonal components for harbour porpoise Special Areas of Conservation (SACs). The seasonal components for each site reflect the areas and seasons during which harbour porpoise densities are persistently higher. These seasons are relevant with regards to management of human activity. Three of the sites designated solely for harbour porpoise have only a single seasonal component - either summer or winter which covers the entirety of the SAC boundary ([Bristol Channel Approaches](https://jncc.gov.uk/our-work/bristol-channel-approaches-mpa/ "Bristol Channel Approaches site information centre"); [North Anglesey Marine](https://jncc.gov.uk/our-work/north-anglesey-marine-mpa/ "North Anglesey Marine site information centre"); [North Channel](https://jncc.gov.uk/our-work/north-channel-mpa/ "North Channel site information centre")). The other two sites ([Southern North Sea](https://jncc.gov.uk/our-work/southern-north-sea-mpa/ "Southern North Sea site information centre"); [West Wales Marine](https://jncc.gov.uk/our-work/west-wales-marine-mpa/ "West Wales Marine site information centre")) have both summer and winter components of varying size reflecting changes in usage and distribution with the season. The harbour porpoise sites not included in this shapefile, namely Skerries and causeway and Inner Hebrides and the Minches, are sites showing consistent year-round use. The boundaries from these sites can be obtained from our [SACs with marine components dataset](https://hub.jncc.gov.uk/assets/598a60db-9323-4781-b5a8-dcf0ca3b29f9 "JNCC Special Areas of Conservation with marine components metadata and download page") The site boundaries were initially drawn up in the British National Grid (BNG) projection in the Secretary of State waters and in Irish National Grid in Northern Ireland waters. Mean Low Water Springs (MLW) was used to delineate the coastal boundary. The MLW shape files were provided by the SNCBs in OSGB36 – British National Grid. Due to the size and distribution of the proposed sites, an equal area projection was required. European Albers Equal Area Conic (AEAC_UKCS) was used with adjusted standard parallels for the UK Continental Shelf (50.2°N and 61.2°N), which minimises distortion for all sites that span the North-South extent of the UK Continental shelf (47.4 N to approximately 64 N). The transformations used to change projection from BNG to AEAC _UKCS were OSGB _1936 _To _WGS _1984 _Petroleum (appropriate for boundaries which extend 10 km from the coast) and ED _1950 _To _WGS _1984 _18 (appropriate for the modified Albers applied).

Resource type

dataset

Resource locator

https://hub.jncc.gov.uk/assets/6d383377-0c95-4338-ad33-91598fce59c8

name: JNCC ResourceHub Page

Unique resource identifier

code

6d383377-0c95-4338-ad33-91598fce59c8

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

boundaries

Keywords

Keyword set

keyword value

Marine

GIS Strategy

Protected Areas

Natura 2000

Geographic location

West bounding longitude

-5.762955

East bounding longitude

3.203611

North bounding latitude

55.481407

South bounding latitude

50.243144

Temporal reference

Temporal extent

Begin position

2017-03-03

End position

2019-09-25

Dataset reference date

date type

publication

effective date

2019-02-25

Frequency of update

Quality and validity

Lineage

Version 1.1 - 27/01/2020 - files updated to reflect the change in status of the sites to full SACs. Version 1 - 03/03/2017 - shapefiles created

Conformity

Data format

name of format

ESRI Arc/View ShapeFile

version of format

Unknown

Constraints related to access and use

Constraint set

Use constraints

Acknowledge © JNCC/NE/NRW

Limitations on public access

None – available under Open Government Licence

Responsible organisations

Responsible party

organisation name

Digital and Data Solutions, JNCC

email address

data@jncc.gov.uk

responsible party role

owner

Metadata on metadata

Metadata point of contact

organisation name

Digital and Data Solutions, JNCC

email address

data@jncc.gov.uk

responsible party role

pointOfContact

Metadata date

2021-03-18

Metadata language

eng