The contribution of renewable energy sources such as wind, marine hydrokinetic and hydroelectric to global power is set to increase in the future due to efforts to reduce reliance on polluting, non-renewable sources. Although they do not create the same polluting emissions there are serious ecological impacts to almost all forms of small and large-scale in-shore, coastal and offshore projects including;

  • Interference with animal behaviours including inhibition of animal migration;
  • Alteration of convectional marine tides;
  • Alterations in flow and alluvial regimes;
  • Habitat alteration in ecological regions from benthic to epibenthic zones;
  • Habitat destruction;
  • Noise disturbance; and
  • chemical toxicity


The exact nature, scale and significance of these biophysical changes for a particular location is dependent on the size and spatial arrangement of structures, the physical characteristics of individual structures and the prevailing physical, chemical and biological characteristics of the location. Projects typically require adaptive management plans that go further than simple environmental impact statements to deal with the multi-faceted interaction of devices and the biophysical changes that these make upon wider ecosystems and those who depend on them for their livelihoods.

Services that MRAG consultants are proficient in offering include;

  • Research into the localised impact of structures;
  • Baseline surveys in a number of locations to support decisions about the suitability of sites, based upon the biophysical properties and socio-economic reliance within areas;
  • Mapping of critical habitats and short and long-term impact analysis for these areas; and
  • problem-solving adaptive management plans to provide the best solution to ameliorate impact on ecosystems, wildlife and those dependent upon areas for their livelihoods.


Title Region End Date
Defining the geographic scale of fish species populations, for impact assessments of low carbon energy projects and marine spatial planning

There is currently no common understanding of how best to quantify the spatial scale…

Quantify the carbon emission abatement potential to different decarbonization solutions for the UK fishing sector

This report helps to build an understanding of how the fisheries sector impacts the…

South Georgia and South Sandwich Islands Fisheries Management.

The work undertaken by MRAG for Government of South Georgia and the South Sandwich…

Atlantic Ocean
Marine Mammal and Seabirds Observation for Survey of North Falkland Basin

MRAG provided observers for marine mammal observations and seabird surveys carried out…

Atlantic Ocean
MRAG Project Bumbuna Hydroelectric Project: Baseline fish survey

An environmental assessment was conducted on the Bumbuna Hydroelectric scheme in 1996…

MRAG Project Pilcomayo River Fishery. Status of the Sabalo Fishery and the Potential Impact of Dam Construction

This project, undertaken in conjunction with the Overseas Development Administration (…

Latin America