1. Assessing the effectiveness of intensive conservation actions: Does guarding and feeding increase productivity and survival of Egyptian Vultures in the Balkans?. (June 2016) Authors: Oppel, Steffen; Dobrev, Vladimir; Arkumarev, Volen; Saravia, Victoria; Bounas, Anastasios; Kret, Elzbieta; Skartsi, Theodora; Velevski, Metodija; Stoychev, Stoycho; Nikolov, Stoyan C. Journal: Biological conservation Issue: Volume 198(2016) Page Start: 157 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Assessing the effectiveness of intensive conservation actions: Does guarding and feeding increase productivity and survival of Egyptian Vultures in the Balkans?. (June 2016) Authors: Oppel, Steffen; Dobrev, Vladimir; Arkumarev, Volen; Saravia, Victoria; Bounas, Anastasios; Kret, Elzbieta; Skartsi, Theodora; Velevski, Metodija; Stoychev, Stoycho; Nikolov, Stoyan C. Journal: Biological conservation Issue: Volume 198(2016) Page Start: 157 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Differential survival throughout the full annual cycle of a migratory bird presents a life‐history trade‐off. Issue 5 (30th March 2021) Authors: Buechley, Evan R.; Oppel, Steffen; Efrat, Ron; Phipps, W. Louis; Carbonell Alanís, Isidoro; Álvarez, Ernesto; Andreotti, Alessandro; Arkumarev, Volen; Berger‐Tal, Oded; Bermejo Bermejo, Ana; Bounas, Anastasios; Ceccolini, Guido; Cenerini, Anna; Dobrev, Vladimir; Duriez, Olivier; García, Javier; G... Journal: Journal of animal ecology Issue: Volume 90:Issue 5(2021) Page Start: 1228 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Global COVID-19 lockdown highlights humans as both threats and custodians of the environment. (November 2021) Authors: Bates, Amanda E.; Primack, Richard B.; Biggar, Brandy S.; Bird, Tomas J.; Clinton, Mary E.; Command, Rylan J.; Richards, Cerren; Shellard, Marc; Geraldi, Nathan R.; Vergara, Valeria; Acevedo-Charry, Orlando; Colón-Piñeiro, Zuania; Ocampo, David; Ocampo-Peñuela, Natalia; Sánchez-Clavijo, Lina M.; ... Journal: Biological conservation Issue: Volume 263(2021) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
5. High juvenile mortality during migration in a declining population of a long‐distance migratory raptor. (4th April 2015) Authors: Oppel, Steffen; Dobrev, Vladimir; Arkumarev, Volen; Saravia, Victoria; Bounas, Anastasios; Kret, Elzbieta; Velevski, Metodija; Stoychev, Stoycho; Nikolov, Stoyan C. Editors: Arroyo, Beatriz Journal: Ibis Issue: Volume 157:Number 3(2015:Jul.) Page Start: 545 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
6. High juvenile mortality during migration in a declining population of a long‐distance migratory raptor. (4th April 2015) Authors: Oppel, Steffen; Dobrev, Vladimir; Arkumarev, Volen; Saravia, Victoria; Bounas, Anastasios; Kret, Elzbieta; Velevski, Metodija; Stoychev, Stoycho; Nikolov, Stoyan C.; Arroyo, Beatriz Journal: Ibis Issue: Volume 157:Number 3(2015:Jul.) Page Start: 545 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
7. Identifying critical migratory bottlenecks and high‐use areas for an endangered migratory soaring bird across three continents. (18th July 2018) Authors: Buechley, Evan R.; Oppel, Steffen; Beatty, William S.; Nikolov, Stoyan C.; Dobrev, Vladimir; Arkumarev, Volen; Saravia, Victoria; Bougain, Clementine; Bounas, Anastasios; Kret, Elzbieta; Skartsi, Theodora; Aktay, Lale; Aghababyan, Karen; Frehner, Ethan; Şekercioğlu, Çağan H. Journal: Journal of avian biology Issue: Volume 49:Number 7(2018) Page Start: n/a Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
8. Major threats to a migratory raptor vary geographically along the eastern Mediterranean flyway. (October 2021) Authors: Oppel, Steffen; Arkumarev, Volen; Bakari, Samuel; Dobrev, Vladimir; Saravia-Mullin, Victoria; Adefolu, Solomon; Sözüer, Lale Aktay; Apeverga, Paul T.; Arslan, Şafak; Barshep, Yahkat; Bino, Taulant; Bounas, Anastasios; Çetin, Turan; Dayyoub, Maher; Dobrev, Dobromir; Duro, Klea; El-Moghrabi, Laith;... Journal: Biological conservation Issue: Volume 262(2021) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
9. Population reinforcement and demographic changes needed to stabilise the population of a migratory vulture. Issue 12 (25th July 2021) Authors: Oppel, Steffen; Saravia, Victoria; Bounas, Anastasios; Arkumarev, Volen; Kret, Elzbieta; Dobrev, Vladimir; Dobrev, Dobromir; Kordopatis, Panagiotis; Skartsi, Theodora; Velevski, Metodija; Petrovski, Nenad; Bino, Taulant; Topi, Mirjan; Klisurov, Ivaylo; Stoychev, Stoycho; Nikolov, Stoyan C. Journal: Journal of applied ecology Issue: Volume 58:Issue 12(2021) Page Start: 2711 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
10. Quantum Theory and Symmetries with Lie Theory and Its Applications in Physics Volume 1 : QTS-X/LT-XII, Varna, Bulgaria, June 2017 /: QTS-X/LT-XII, Varna, Bulgaria, June 2017. (2018) Editors: Dobrev, Vladimir Record Type: Book Extent: 1 online resource (427 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗