Breeding bird monitoring in the EU Special Protection Area "Helmestausee Berga-Kelbra (part of Saxony-Anhalt)" (SPA0004LSA) including functionally connected project areas in Thuringia

1. Objective: The objective of Lot 1 is the annual survey, GIS-based processing and nature conservation assessment of breeding bird populations in the study area. The focus is on territory mapping, breeding status assessment, breeding success monitoring, disturbances and the assessment of measures areas in the BPBV project "Kranich(t)raum Goldene Aue". The service serves the nature conservation inventory of valuable and protected area relevant species, the effectiveness control of planned project measures as well as the support of area management. The services are to be provided in such a way that time series comparability and data consistency are guaranteed over the term. 2. Subject of the service: The services to be provided are divided into the following three areas: Breeding bird mapping, Annual report, Final report. 2.1. Breeding bird mapping: The mapping service is expected to start in March 2027 and comprises five breeding bird survey years from 2027 to 2031. In each survey year, the contractor must carry out a comprehensive breeding bird mapping of the defined valuable and protected area relevant bird species throughout the entire study area. The focus is on the measure areas of the Kranich(t)raum project. The breeding bird survey is to be carried out as territory mapping based on the method standards according to Südbeck et al. (2025), taking into account species-specific survey periods, activity times, valuation limits and detection requirements. According to the method standards, at least six daytime surveys in the entire area and three dawn and night surveys are to be planned. The survey dates are to be staggered seasonally between the beginning of March and the end of July and adapted to the main habitats of the area, the expected species spectrum as well as the phenology and weather conditions. In addition, two breeding success monitoring sessions are to be carried out between mid-July and the end of August in the years 2027 to 2030. Based on the field data, traceable paper territories or GIS-based territory boundaries are to be created for the valuable and protected area relevant species. For each territory, the highest recorded breeding status code is to be indicated and assessed professionally. The recordings are to be preferably carried out using the app "NaturaList" in protected recording and using detailed observation lists. The use of other software is possible after consultation with the client, provided that it offers equivalent functions and fully meets the required data standards. A digital transfer of the raw data for each field date to the client is required within 10 working days. Further details can be found in the tender document III – "Service Description Lot 1 – Breeding Bird Mapping". 2.2. Annual report: For each survey year, a separate annual report on breeding bird monitoring is to be prepared after the completion of the mapping services. The submission will be made by October 15th of the respective survey year. The exception is the year 2031, in which the annual report must be available by August 30, 2031. The annual report comprehensibly summarizes the methodology, scope of survey, results, assessment and professional uncertainties of the respective breeding bird year. It is to be structured in such a way that the results are usable for professional project management as well as for later time series comparisons and the evaluation of project-related measures. The report is to be written in German. A complete annual data package is to be submitted with the annual report. This includes at least the field-related raw data, the professionally checked and validated annual data set, GIS layers, metadata, survey documentation, relevant photo documentation, maps, paper territories or GIS-based territory boundaries, and a list of sources for external data. The details can be found in the tender document III – "Service Description Lot 1 – Breeding Bird Mapp...