• National Biodiversity Network Trust
  • NBN Forum
  • NBN Atlas
  • Log In
NBN Atlas
  • Join or Donate
  • NBN Atlas News
  • Contact us
  • Log in / Register
  • Choose NBN Atlas
    • NBN Atlas
    • NBN Atlas Isle of Man
    • NBN Atlas Northern Ireland
    • NBN Atlas Scotland
    • NBN Atlas Wales
    • Beautiful Burial Ground Portal
NBN Atlas
  • Species
  • Locations
    • Search by polygon
    • Explore by address, postcode or location
    • Explore by pre-defined area
  • Analyse
  • Get Involved
    • Find a wildlife survey or recording scheme
    • Share data on the NBN Atlas
    • NBN Atlas Citations
    • Donate / Support the NBN Atlas and the NBN Trust
    • Sign up for our Newsletter
    • NBN Conference
  • Data and Partners
    • Search for a Data Partner
    • Search NBN Atlas datasets
    • Advanced record search
    • Species lists
    • NBN Atlas data processing schedule
    • Global Biodiversity Information Facility (GBIF)
  • About
    • About NBN Atlas
    • Join or Donate
  • Help
  1. Home
  2. Data Resources
  3. The ecology of Najas flexilis (Slender naiad)

Page options

Edit metadata for this data resource. You need
appropriate authorisation to do this. You will
be asked to log in if you are not already.

The ecology of Najas flexilis (Slender naiad)

NatureScot

Description

Records from a survey and autoecological study of Najas flexilis (Slender naiad) and associated waterplants from Scotland (Mainland Scotland records only). </br>

This dataset contains zero abundance records for N. flexilis. These were collected as part of a structured survey using the methodology described below

Geographic Description

Scotland

Purpose

Najas flexilis (Willd.) Rostk. & Schmidt is a submerged rooted macrophyte occurring in lakes. It is a Red Data Book species and is listed in Annexes II and IV of the EC Habitats Directive 92/43/EEC. It is also protected under domestic legislation, being listed in Schedule 8 of The Wildlife and Countryside Act, 1981, and Schedule 4 of The Conservation (Natural Habitats & c.) Regulations, 1994. In order to protect this species information is required on the ecological tolerances of the plant and the main threats to the species need to be elucidated. In addition, effective monitoring strategies are required to identify when and where the plant is endangered. The Biodiversity Action Plan for this species suggests reintroduction of N. flexilis to sites where the species has become extinct in recent years. If this is to occur information is required on when to reintroduce the plant, in what form (seed or plant) and from where. This study attempts to address some of these gaps in our knowledge of the ecology of N. flexilis.

Data quality

High: Survey was carried out by an experienced contractor, using approved methodology.

Methods

42 lakes from which N. flexilis had been recorded were investigated in Scotland. At each site N. flexilis presence or absence was recorded. The location of N. flexilis populations was determined within a loch from past records, where available, especially the Scottish Loch Survey data and the results of previous surveys for the plant. Three basic survey methods were used to locate N. flexilis within the lake; boat, shoreline and snorkel surveys. Snorkel surveys were considered the most effective for finding N. flexilis, and were adopted as the standard approach wherever feasible. Boats were used when the lakes were particularly large and there was no knowledge of exactly where the plant could be found; this enabled a larger area to be surveyed. When boats were not available, a shoreline search was carried out. Shoreline search included searching the drift, wading into the water as far as safety would allow, and throwing grapnels into the deeper water.

Citation

No citation information available.

Rights

OGL

Usage statistics

Loading...

Digitised records

Looking up... the number of records that can be accessed through the NBN Atlas. This resource was last checked for updated data on 21 Nov 2016. The most recent data was published on 21 Nov 2016.

Click to view records for the The ecology of Najas flexilis (Slender naiad) resource.

Data access

View records Download usage stats Alert me about new records Alert me about annotations

Date created: 2016-05-04
Metadata updated: 2020-06-29
Most recent data published: 2016-11-21

Citations

DOI https://doi.org/10.15468/feupcc    101 citations for these data

Licence

Open Government Licence 3.0 Open Government Licence 3.0

Temporal scope

1996-01-01 - 2000-09-11

Location

Great Glen House, Leachkin Road
INVERNESS
IV3 8NW

Contact

Colin McLeod
email this contact

Colin McLeod
email this contact

Colin McLeod
email this contact

Web site

Visit the data resource's website

NBN Atlas Partnership

National Biodiversity NetworkAtlas of Living AustraliaNatural EnglandNatural Resources WalesScottish Environment Protection AgencyWelsh GovernmentScottish Natural HeritageNorthern Ireland Environment Agency
back to top
  • Species
  • Locations
    • Search by polygon
    • Explore by address, postcode or location
    • Explore by pre-defined area
  • Analyse
  • Get Involved
    • Find a wildlife survey or recording scheme
    • Share data on the NBN Atlas
    • NBN Atlas Citations
    • Donate / Support the NBN Atlas and the NBN Trust
    • Sign up for our Newsletter
    • NBN Conference
  • Data and Partners
    • Search for a Data Partner
    • Search NBN Atlas datasets
    • Advanced record search
    • Species lists
    • NBN Atlas data processing schedule
    • Global Biodiversity Information Facility (GBIF)
  • About
    • About NBN Atlas
    • Join or Donate
  • Help
NBN Atlas

© NBN Atlas Partnership 2021.

  • Terms of use
  • Privacy policy

Join the conversation

Twitter

Ask a question

Use our online forum to join the conversation about nature in the UK.

Go to the NBN Forum

Supported by the heritage fundFairs Fair