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Nicholas O’Dwyer Ltd. has a fully integrated ecology group which includes a number of associate ecologists that have expertise in a broad range of ecological disciplines and a comprehensive knowledge of current legislation and best practice in ecology.

Ecological Services to our clients include the preparation of Ecological Impact Assessments (EcIA), Specialist Ecological Surveys (eg Protected Species) and the preparation of Ecological Chapters for Environmental Impact Assessments (EIA's), and Invasive Species Management Plans.

Our Team have specialist skills in the following areas:

-Habitat mapping 

-Aquatic Ecology Surveys

-Terrestrial Ecology Surveys


-Bat Surveys



-Invasive species

Recent Project(s)

Letterkenny Waste Water Treatment Works and Sludge Facility, Ireland – Appropriate Assessment and Ecological Surveys

Nicholas O'Dwyer  and our partners AMEC were contracted to prepare an Appropriate Assessment Stage 2 to support a Wastewater Discharge Licence application at Letterkenny Wastewater Treatment Works (WwTW) and Sludge Facility, Co. Donegal.  All surveys and reporting was carried out by experienced and qualified ecologists/ornithologists, working in accordance with standard guidance documents and CIEEM Competency Requirements.



Cróna Sheehan

+353 1 296 9001