• Services
  • Projects
  • Publications
    • Reports
    • Scientific publications
  • About us
  • Coworkers
  • Work with us
  • Contact
  • Swedish
  • English

AquaBiota

- part of the NIRAS group

  • About us
  • Coworkers
  • Work with us
  • Contact
  • Swedish
  • English
  • Services
  • Projects
  • Publications
    • Reports
    • Scientific publications

Inventories of nature values in Lidingö

2015-12-08 AquaBiota

AquaBiota performed a marine conservation value assessment and extensive field surveys of the coastal waters off Lidingö for Lidingö Municipality’s work with a “blue plan”.

Lidingö has launched a project to increase knowledge of the municipality’s aquatic nature values. This knowledge is necessary in municipal planning to highlight conservation values, threats and opportunities for development. AquaBiota has conducted inventories in order to assess the nature values of Lidingö’s coastal zone, focusing on the areas identified as priorities for the work of the Blue Plan. The project also aimed to identify the need for in-depth surveys and measures to maintain or restore aquatic values.

Surveys of vegetation were conducted by free diving or using a drop video camera along transects. The survey consisted of more than 200 transects. In the deeper waters grab samples were taken to survey soft sediments and the animals living there. In total 15 species of vascular plants, 10 species of macroe algae and 5 species of soft bottom fauna were found.

Nature value assessments were based on the criteria naturalness, functionality, rarity, endangered species, and vulnerability. An area free from anthropogenic pressures hosting important ecological functions would typically be classified as important. Presence of endangered or rare species would further strengthen the importance of the area. The highest nature values were found in Gråviken and Ekholmsnässjön. Due to their shallow inlets these lagoons have limited water exchange with Kyrkviken. These vegetated shallow environments offer excellent conditions for invertebrates, fish and birds and the limited presences of human activities make them potential habitats for endangered and rare species of bird. They also constitute important spawning and nursery grounds for fish, probably playing a major role for the fish stocks of eastern Lidingö.

Lidingo 1
Curled pondweed (Potamogeton crispus) is relatively rare in brackish water. It was found occasionally in the shallow waters surrounding Lidingö.

Lidingo 2
At 12 meters depth in the central part of Kyrkviken bottom sediments were covered with large quantities of bacteria of the genus Beggiatoa, which assimilates sulphide and thrive in oxygen-free conditions.

Lidingo 3
The only pike (Esox Lucius) observed in the surveys unfortunately swam away from the camera.

Filed Under: Other, Surveys of species and conservation values

Contact


Martin Isæus
Project director
MD, PhD Marine ecology
martin.isaeus@niras.se

News

AquaBiota – part of the NIRAS group

Sep 01

September 1st, AquaBiota joined the NIRAS group! … Read more »

AquaBiota Gasell 2022

Aug 30

AquaBiota has been appointed as a Gasell Company … Read more »

‘Mixed species groups in mammals’, one of 16 classic papers celebrating 50 years of Mammal Review

Dec 16

A paper by Eva Isaeus and others is featured in a … Read more »

Application and EIA for Storgrundet announced

Dec 16

Earlier this year, wpd submitted an application to … Read more »

Webinars about large-scale sustainable offshore wind power

Dec 15

During November and December, AquaBiota conducted … Read more »

New paper on trend correlations for coastal eutrophication

Mar 31

Trend correlations for coastal eutrophication and … Read more »

See all posts »

Requests

mils.anbud@niras.se

 

AquaBiota Water Research ABWR AB

c/o NIRAS
Hantverkargatan 11B
112 21 Stockholm

Copyright © 2025 AquaBiota · An iGoMoon Website · Log in

We use cookies on this website to gather information how you use the website so we can improve the experience for you. By continuing to use our services, you are giving us your consent to use cookies.