Freshwater Macrophytes in Nant Teyrn - Freshwater Environmental Change Protocol (2006)

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Scott Wilson was commissioned to undertake a macrophyte survey of Nant Teyrn in Snowdonia National Park. The aim of this survey was to provide macrophyte monitoring data on a 100m stretch of Nant Teyrn within the Snowdonia Environmental Change Network (ECN) terrestrial site. The following elements were recorded: · Macrophyte species present and their relative abundance with reference to the check list of aquatic macrophytes used in ECN. Macrophytes include any plant observable by the naked eye and nearly always identifiable when observed.This includes all aquatic vascular plants and bryophytes, together with groups of algae which can be seen to be composed predominantly of a single species · Species distribution along a river length and zonation at selected sample points. · Physical characteristics of the sampling location

Identification

Dynodydd
Identifier
NRW_DS115638
Teitl Amgen
Alternative Title
  • Macroffytau Dwr Croyw yn Nant Teyrn - Protocol Newid Amgylcheddol Dwr Croyw (2006)
Laith Metadata
Metadata Language
English
Lineage

The macrophyte survey covered a 50 m length of the river immediately upstream of the ECN chemical sample point and 50 metres immediately downstream of the weir. The two 50 m survey sections were measured accurately along the left bank using a tape measure to ensure ease of future replication. Each 50 m length was divided into five 10m units using ranging poles and a field assistant to mark the end points of each unit. Percentage cover and relative abundance estimates were made for all species of floating and submerged macrophytes contained within the river channel area. All such macrophytes seen submerged or partly submerged at low flow levels were recorded. At the sides of the river all macrophytes growing on parts of the substrata that are likely to be submerged for more than 85% of the time were also included. Percentage cover estimates were made for all macrophyte species in the river channel in each 10 m section of the 100 m length. The following attributes were recorded in each 10 m survey unit as an aid in the interpretation of macrophyte data: Width, Depth, Substrate, Habitats, Shading, Water clarity and Bed stability.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2006-10-31
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Scott Wilson Ltd
16 Priestgate, Peterborough, Cambridgeshire, PE1 1JA
http://www.scottwilsongroup.com
 

Extent

Extent

Hyd
Geographic Extent
GWYNEDD - GWYNEDD
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Documents ()

    Specification

    [A] The final report in Microsoft Word and Adobe PDF formats. [B] Raw data workbook in excel format

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
Conformity
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

The macrophyte survey covered a 50 m length of the river immediately upstream of the ECN chemical sample point and 50 metres immediately downstream of the weir. The two 50 m survey sections were measured accurately along the left bank using a tape measure to ensure ease of future replication. Each 50 m length was divided into five 10m units using ranging poles and a field assistant to mark the end points of each unit. Percentage cover and relative abundance estimates were made for all species of floating and submerged macrophytes contained within the river channel area. All such macrophytes seen submerged or partly submerged at low flow levels were recorded. At the sides of the river all macrophytes growing on parts of the substrata that are likely to be submerged for more than 85% of the time were also included. Percentage cover estimates were made for all macrophyte species in the river channel in each 10 m section of the 100 m length. The following attributes were recorded in each 10 m survey unit as an aid in the interpretation of macrophyte data: Width, Depth, Substrate, Habitats, Shading, Water clarity and Bed stability.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Allweddair
Keywords

NRW Thesaurus
  • aquatic macrophytes
  • macrophyte surveys
  • freshwater (fresh water, open water) (see also freshwater ecology) (see also inland waters,rivers,lakes)
  • Special Areas of Conservation (SAC) - SAC monitoring
  • Nant Teyrn
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2023-12-31
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

Freshwater macrophytes in Nant Teyrn : freshwater environmental change protocol
 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW 2006 There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313135363338 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Condition monitoring of Special Areas of Conservation (SACs) in Wales

NRW_DS110194
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2025-03-07T17:34:04.94Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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