Tenders Are Invited For Study Of The Visitation By Avifauna Of The Lambarde Dumping Zone Of The Grand Maritime Port Of Nantes Saint-Nazaire

This Contract Concerns The Study Of The Use By Avifauna Of The Lambarde Immersion Zone Of The Grand Port Maritime De Nantes Saint-Nazaire. Maintenance Dredging Of The Grand Port Maritime De Nantes Saint-Nazaire (Gpmnsn) And Their Immersion In The Lambarde Zone Are Authorized By The Interprefectural Decree Of December 27, 2024. This Decree Provides, In Particular, For Monitoring Of Avifauna In The Area Of The Zone. Lambarde Immersion Site Which Is Shown In The Following Figure And Covers 1000 Ha. The Objective Of The Study Is To Identify The Functional Role Of The Area For The Species And In Particular The Balearic Shearwater And To Evaluate The Interactions With The Sluice, In Order To Assess The Potential Impacts On The Avifauna And In Particular On The Balearic Shearwater. The Study Focuses, For Each Species Observed And In Particular For The Balearic Shearwater, On: - Carrying Out Observation Campaigns At Sea Within The Study Perimeter Defined So As To Know The Species Of Seabirds Which Frequent The Immersion Site; - Comparing The Data Acquired With Those Of Previous Studies Available (Pansn, 2009; Gpmnsn, 2011; Afb, 2019; Biotope, 2020, ...). A Synthetic Analysis Of Existing Data On The External Loire Sector Is Expected (Overflights, Telemetry, National Action Plan, Etc.) Is Expected; -The Description Of Attendance On The Site And The Behavior Of Birds; -Analysis Of Species Interactions With Respect To Dumping Operations; -Evaluation Of The Potential Impacts Of Clogging On Species And Their Behavior. The Technical Specifications Are Defined In The Specific Technical Clauses Specification.