The collection and management of timed surveys for EBBA2 has successfully finished. All the data received have been formatted into EBBA2 data structure, and were also checked by national and European coordinators to detect and remove suspicious non-breeders and errors from the dataset. The final checking of the data is still in process, and after this we plan to start Species Distribution Modelling (SDM) already during April 2018. Thanks to pilot data provisions that happened in previous years, we were able to do exploratory work with models even before we had final data ready, and due to that the statistical procedure for SDM is already determined. We hope that by the end of 2018, we will already have as much possible models for individual species as possible.
Below, you can find out more about how the process went, how many data we received across Europe, and how the process of selecting the data went forward.
At first, these are some of the examples of data we received for individual species. It shows individual timed surveys where species was recorded during the EBBA2 data collection period, and was subsequently sent by national coordinators to EBBA2 coordination team. Please note that these data represent all received information on presented species, before the data selection for species distribution modelling took place.
Selection of surveys for Species Distribution Modelling (SDM)
We have received timed data coming from more than 23,000 squares size of 10x10km across the whole of Europe. Some European regions or countries have managed to provide a much higher density of timed surveys than others. For that reason, we made a data selection process, whose aim was to homogenise the sampling coverage as a robust basis for SDM. Basic rules were: i) for each 50×50 km square, there were up to ten randomly selected 10×10 km squares, ii) then up to five surveys were selected within the already selected 10×10 km squares.
What is the final outcome of the data selection process?
At the end of the selection process, for SDM, we have in total 38,000 timed surveys coming from 17,000 10×10 km squares, which represents 15% of Europe!
We would like to thank to our numerous network that enabled this to happen:
EBBA2 Steering Committee: Verena Keller (Chair), Ruud Foppen, Mikhail Kalyakin, Lluís Brotons, Mark Eaton, Hans-Günther Bauer, Iván Ramírez, Aleksi Lehikoinen & David Noble.
EBBA2 coordination team and assistants: Sergi Herrando, Marti Franch, Marc Anton, David Martí, David Garcia, Dani Villero & Magda Pla (ICO); Petr Vorisek, Marina Kipson & Alena Klvaňová (CSO), Pietro Milanesi and Verena Keller (SOI).
Spatial Modelling Group of the EBCC: Pietro Milanesi, Henk Sierdsema, Tomas Telensky, Alison Johnston, Jerome Guelat, Thomas Sattler, Marc Kéry, Lluís Brotons, Nicolas Titeux, Frédéric Jiguet, Christian Kampichler, Simon Gillings & Thomas Gottschalk.
National coordinators and data providers: Taulant Bino (Albania), Clara Pladevall (Andorra), Karen Aghababyan (Armenia), Norbert Teufelbauer (Austria), Elchin Sultanov (Azerbaijan), Anastasiya Kuzmenkova & Alexander Vintchevski (Belarus), Jean-Yves Paquet & Anny Anselin (Belgium), Dražen Kotrošan & Jovica Sjeničić (Bosnia and Herzegovina), Stoycho Stoychev & Svetoslav Spasov (Bulgaria), Vlatka Dumbovic & Tibor Mikuska (Croatia), Christina Ieronymidou (Cyprus), Karel Štastný & Vladimír Bejček (Czech Republic), Charlotte Moshoj & Thomas Vikstrøm (Denmark), Uku Paal & Renno Nellis(Estonia), Aleksi Lehikoinen (Finland), Jérémy Dupuy, Bernard Deceuninck, Jean-Philippe Siblet & Frederic Jiguet (France), Guillermo Mayor & Alexander Abuladze (Georgia), Johannes Wahl & Christoph Sudfeldt (Germany), Danae Portolou (Greece), Karoly Nagy, Zsolt Nagy & Tibor Szep (Hungary), Gudmundur Gudmundsson (Iceland), Brian Caffrey, Olivia Crowe & Justin Walker (Ireland), Roberto Lardelli & Lorenzo Fornasari (Italy), Askar Isabekov & Olga Voltzit (Kazakhstan), Qenan Maxhuni (Kosovo), Andris Dekants & Ainars Aunins (Latvia), Georg Willi & Peter Knaus (Liechtenstein), Liutauras Raudonikis & Gintaras Riauba (Lithuania), Katharina Klein (Luxembourg), Metodija Velevski & Danka Uzunova (Macedonia), Nicholas Barbara (Malta), Mihailo Jovičević & Darko Saveljić (Montenegro), Kjetil Mork, Ingar Jostein Øien & Paul Shimmings (Norway), Tomasz Chodkiewicz & Tomasz Wilk (Poland), Domingos Leitao, João Rabaça & Carlos Godinho (Portugal), Vitalie Ajder, Silvia Ursul & Emanuel Baltag (Republic of Moldova), Judit Veres-Szászka & Zoltan Szabo (Romania), Olga Voltzit & Mikhail Kalyakin (Russia), Dimitrije Radisic, Draženko Rajković, Saša Rajkov, Slobodan Puzović & Milan Ružić (Serbia), Jozef Ridzoň (Slovakia), Tomaž Mihelič (Slovenia), Juan Carlos del Moral & Blas Molina (Spain), Fredrik Haas, Ake Lindstrom & Martin Green (Sweden), Hans Schmid, Peter Knaus & Samuel Wechsler (Switzerland), Chris van Turnhout, Dirk Zoetebier & Erik van Winden (The Netherlands), Kerem Boyla, Eylül Dizdaroğlu & Lider Sinav (Turkey), Justin Walker, Dawn Balmer, David Noble & Simon Gillings (UK), Igor Gorban & Tatiana Kuzmenko (Ukraine), as well as international on-line portals BirdTrack, eBird, Observation.org & Ornitho, regional sources & foreign birdwatchers, with special mention to the teams leaded by Stephan Ernst (Albania), Kai Gauger (Azerbaijan) & Johannes Kamp (Kazakhstan).
As well as to numerous birdwatchers and fieldworkers that collected the data across Europe!
Sergi Herrando, Martí Franch, Marc Anton, David Martí, David Garcia, Dani Villero, Magda Pla, Petr Voříšek, Marina Kipson, Pietro Milanesi and Verena Keller, 11.4.2018