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108 results on '"Nikolov, Stoyan C."'

1. Tracking data highlight the importance of human-induced mortality for large migratory birds at a flyway scale

Author

Serratosa, Juan, Oppel, Steffen, Rotics, Shay, Santangeli, Andrea, Butchart, Stuart H.M., Cano-Alonso, Luis S., Tellería, Jose Luis, Kemp, Ryno, Nicholas, Aaron, Kalvāns, Aigars, Galarza, Aitor, Franco, Aldina M.A., Andreotti, Alessandro, Kirschel, Alexander N.G., Ngari, Alex, Soutullo, Alvaro, Bermejo-Bermejo, Ana, Botha, Andre J., Ferri, Andrea, Evangelidis, Angelos, Cenerini, Anna, Stamenov, Anton, Hernández-Matías, Antonio, Aradis, Arianna, Grozdanov, Atanas P., Rodríguez, Beneharo, Şekercioğlu, Çağan H., Cerecedo-Iglesias, Catuxa, Kassara, Christina, Barboutis, Christos, Bracebridge, Claire, García-Ripollés, Clara, Kendall, Corinne J., Denac, Damijan, Schabo, Dana G., Barber, David R., Popov, Dimitar V., Dobrev, Dobromir D., Mallia, Egidio, Kmetova-Biro, Elena, Álvarez, Ernesto, Buechley, Evan R., Bragin, Evgeny A., Cordischi, Fabrizio, Zengeya, Fadzai M., Monti, Flavio, Mougeot, Francois, Tate, Gareth, Stoyanov, Georgi, Dell'Omo, Giacomo, Lucia, Giuseppe, Gradev, Gradimir, Ceccolini, Guido, Friedemann, Guilad, Bauer, Hans-Günther, Kolberg, Holger, Peshev, Hristo, Catry, Inês, Øien, Ingar J., Alanís, Isidoro Carbonell, Literák, Ivan, Pokrovsky, Ivan, Ojaste, Ivar, Østnes, Jan E., de la Puente, Javier, Real, Joan, Guilherme, João L., González, José C., Fernández-García, José M., Gil, Juan Antonio, Terraube, Julien, Poprach, Karel, Aghababyan, Karen, Klein, Katharina, Bildstein, Keith L., Wolter, Kerri, Janssens, Kjell, Kittelberger, Kyle D., Thompson, Lindy J., AlJahdhami, Mansoor H., Galán, Manuel, Tobolka, Marcin, Posillico, Mario, Cipollone, Mario, Gschweng, Marion, Strazds, Māris, Boorman, Mark, Zvidzai, Mark, Acácio, Marta, Romero, Marta, Wikelski, Martin, Schmidt, Matthias, Sarà, Maurizio, McGrady, Michael J., Dagys, Mindaugas, Mackenzie, Monique L., Al Taq, Muna, Mgumba, Msafiri P., Virani, Munir Z., Kassinis, Nicolaos I., Borgianni, Nicolò, Thie, Nikki, Tsiopelas, Nikos, Anglister, Nili, Farwig, Nina, Sapir, Nir, Kleven, Oddmund, Krone, Oliver, Duriez, Olivier, Spiegel, Orr, Al Nouri, Osama, López-López, Pascual, Byholm, Patrik, Kamath, Pauline L., Mirski, Paweł, Palatitz, Peter, Serroni, Pietro, Raab, Rainer, Buij, Ralph, Žydelis, Ramūnas, Nathan, Ran, Bowie, Rauri C.K., Tsiakiris, Rigas, Hatfield, Richard Stratton, Harel, Roi, Kroglund, Rolf T., Efrat, Ron, Limiñana, Ruben, Javed, Salim, Marinković, Saša P., Rösner, Sascha, Pekarsky, Sasha, Kapila, Shiv R., Marin, Simeon A., Krejčí, Šimon, Giokas, Sinos, Tumanyan, Siranush, Turjeman, Sondra, Krüger, Sonja C., Ewing, Steven R., Stoychev, Stoycho, Nikolov, Stoyan C., Qaneer, Tareq E., Spatz, Theresa, Hadjikyriakou, Thomas G., Mueller, Thomas, Katzner, Todd E., Aarvak, Tomas, Veselovský, Tomáš, Nygård, Torgeir, Mellone, Ugo, Väli, Ülo, Sellis, Urmas, Urios, Vicente, Nemček, Vladimír, Arkumarev, Volen, Getz, Wayne M., Fiedler, Wolfgang, Van den Bossche, Willem, Lehnardt, Yael, and Jones, Victoria R.

Published
2024
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2. Assessing genetic diversity patterns at neutral and adaptive loci to inform population reinforcement of an endangered migratory vulture

Author

Bounas, Anastasios, Saravia-Mullin, Victoria, Méndez, Maria, Arkumarev, Volen, Aghajanyan, Lusine, Ararat, Korsh, Buechley, Evan, Dobrev, Vladimir, Dobrev, Dobromir, Efrat, Ron, Klisurov, Ivaylo, Kret, Elzbieta, Skartsi, Theodora, Oppel, Steffen, Petrov, Rusko, Şekercioğlu, Çağan H., Vaidl, Anton, Donázar, José A., Nikolov, Stoyan C., and Sotiropoulos, Konstantinos

Published
2023
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3. Following the White Vulture: Ethno-ornithology along the Flyway of the Egyptian Vulture (Neophron percnopterus)

Author

Stara, Kalliopi, Saravia-Mullin, Victoria, Tsiakiris, Rigas, Adefolu, Solomon, Akyol, Adem, Akyol, Raziye İçtepe, Asswad, Nabegh Ghazal, Çetin, Turan, Dayyoub, Maher, Dushi, Gligor, Ivande, Samuel Tertese, Kordopatis, Panagiotis, Kret, Elzbieta, Özuslu, Serdar, Petrovski, Nenad, Simeonova, Ivalina, Spassova, Yana, Qaneer, Tareq Emad, Pourchier, Cloé, Saad, Louis Junior, ElSafoury, Hana, Topi, Mirjan, Trajҫe, Aleksandër, Ziu, Denada, and Nikolov, Stoyan C.

Published
2022
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4. Global COVID-19 lockdown highlights humans as both threats and custodians of the environment

Author

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., Adamescu, Cristian M., Cheval, Sorin, Racoviceanu, Tudor, Adams, Matthew D., Kalisa, Egide, Kuuire, Vincent Z., Aditya, Vikram, Anderwald, Pia, Wiesmann, Samuel, Wipf, Sonja, Badihi, Gal, Henderson, Matthew G., Loetscher, Hanspeter, Baerenfaller, Katja, Benedetti-Cecchi, Lisandro, Bulleri, Fabio, Bertocci, Iacopo, Maggi, Elena, Rindi, Luca, Ravaglioli, Chiara, Boerder, Kristina, Bonnel, Julien, Mathias, Delphine, Archambault, Philippe, Chauvaud, Laurent, Braun, Camrin D., Thorrold, Simon R., Brownscombe, Jacob W., Midwood, Jonathan D., Boston, Christine M., Brooks, Jill L., Cooke, Steven J., China, Victor, Roll, Uri, Belmaker, Jonathan, Zvuloni, Assaf, Coll, Marta, Ortega, Miquel, Connors, Brendan, Lacko, Lisa, Jayathilake, Dinusha R.M., Costello, Mark J., Crimmins, Theresa M., Barnett, LoriAnne, Denny, Ellen G., Gerst, Katharine L., Marsh, R.L., Posthumus, Erin E., Rodriguez, Reilly, Rosemartin, Alyssa, Schaffer, Sara N., Switzer, Jeff R., Wong, Kevin, Cunningham, Susan J., Sumasgutner, Petra, Amar, Arjun, Thomson, Robert L., Stofberg, Miqkayla, Hofmeyr, Sally, Suri, Jessleena, Stuart-Smith, Rick D., Day, Paul B., Edgar, Graham J., Cooper, Antonia T., De Leo, Fabio Cabrera, Garner, Grant, Des Brisay, Paulson G., Schrimpf, Michael B., Koper, Nicola, Diamond, Michael S., Dwyer, Ross G., Baker, Cameron J., Franklin, Craig E., Efrat, Ron, Berger-Tal, Oded, Hatzofe, Ohad, Eguíluz, Víctor M., Rodríguez, Jorge P., Fernández-Gracia, Juan, Elustondo, David, Calatayud, Vicent, English, Philina A., Archer, Stephanie K., Dudas, Sarah E., Haggarty, Dana R., Gallagher, Austin J., Shea, Brendan D., Shipley, Oliver N., Gilby, Ben L., Ballantyne, Jasmine, Olds, Andrew D., Henderson, Christopher J., Schlacher, Thomas A., Halliday, William D., Brown, Nicholas A.W., Woods, Mackenzie B., Balshine, Sigal, Juanes, Francis, Rider, Mitchell J., Albano, Patricia S., Hammerschlag, Neil, Hays, Graeme C., Esteban, Nicole, Pan, Yuhang, He, Guojun, Tanaka, Takanao, Hensel, Marc J.S., Orth, Robert J., Patrick, Christopher J., Hentati-Sundberg, Jonas, Olsson, Olof, Hessing-Lewis, Margot L., Higgs, Nicholas D., Hindell, Mark A., McMahon, Clive R., Harcourt, Rob, Guinet, Christophe, Hirsch, Sarah E., Perrault, Justin R., Hoover, Shelby R., Reilly, Jennifer D., Hobaiter, Catherine, Gruber, Thibaud, Huveneers, Charlie, Udyawer, Vinay, Clarke, Thomas M., Kroesen, Laura P., Hik, David S., Cherry, Seth G., Del Bel Belluz, Justin A., Jackson, Jennifer M., Lai, Shengjie, Lamb, Clayton T., LeClair, Gregory D., Parmelee, Jeffrey R., Chatfield, Matthew W.H., Frederick, Cheryl A., Lee, Sangdon, Park, Hyomin, Choi, Jaein, LeTourneux, Frédéric, Grandmont, Thierry, de-Broin, Frédéric Dulude, Bêty, Joël, Gauthier, Gilles, Legagneux, Pierre, Lewis, Jesse S., Haight, Jeffrey, Liu, Zhu, Lyon, Jarod P., Hale, Robin, D'Silva, Dallas, MacGregor-Fors, Ian, Arbeláez-Cortés, Enrique, Estela, Felipe A., Sánchez-Sarria, Camilo E., García-Arroyo, Michelle, Aguirre-Samboní, Giann K., Franco Morales, Juan C., Malamud, Shahar, Gavriel, Tal, Buba, Yehezkel, Salingré, Shira, Lazarus, Mai, Yahel, Ruthy, Ari, Yigael Ben, Miller, Eyal, Sade, Rotem, Lavian, Guy, Birman, Ziv, Gury, Manor, Baz, Harel, Baskin, Ilia, Penn, Alon, Dolev, Amit, Licht, Ogen, Karkom, Tabi, Davidzon, Sharon, Berkovitch, Avi, Yaakov, Ofer, Manenti, Raoul, Mori, Emiliano, Ficetola, Gentile Francesco, Lunghi, Enrico, March, David, Godley, Brendan J., Martin, Cecilia, Mihaly, Steven F., Barclay, David R., Thomson, Dugald J.M., Dewey, Richard, Bedard, Jeannette, Miller, Aroha, Dearden, Amber, Chapman, Jennifer, Dares, Lauren, Borden, Laura, Gibbs, Donna, Schultz, Jessica, Sergeenko, Nikita, Francis, Fiona, Weltman, Amanda, Moity, Nicolas, Ramírez-González, Jorge, Mucientes, Gonzalo, Alonso-Fernández, Alexandre, Namir, Itai, Bar-Massada, Avi, Chen, Ron, Yedvab, Shmulik, Okey, Thomas A., Oppel, Steffen, Arkumarev, Volen, Bakari, Samuel, Dobrev, Vladimir, Saravia-Mullin, Victoria, Bounas, Anastasios, Dobrev, Dobromir, Kret, Elzbieta, Mengistu, Solomon, Pourchier, Cloé, Ruffo, Alazar, Tesfaye, Million, Wondafrash, Mengistu, Nikolov, Stoyan C., Palmer, Charles, Sileci, Lorenzo, Rex, Patrick T., Lowe, Christopher G., Peters, Francesc, Pine, Matthew K., Radford, Craig A., Wilson, Louise, McWhinnie, Lauren, Scuderi, Alessia, Jeffs, Andrew G., Prudic, Kathleen L., Larrivée, Maxim, McFarland, Kent P., Solis, Rodrigo, Hutchinson, Rebecca A., Queiroz, Nuno, Furtado, Miguel A., Sims, David W., Southall, Emily, Quesada-Rodriguez, Claudio A., Diaz-Orozco, Jessica P., Rodgers, Ku'ulei S., Severino, Sarah J.L., Graham, Andrew T., Stefanak, Matthew P., Madin, Elizabeth M.P., Ryan, Peter G., Maclean, Kyle, Weideman, Eleanor A., Şekercioğlu, Çağan H., Kittelberger, Kyle D., Kusak, Josip, Seminoff, Jeffrey A., Hanna, Megan E., Shimada, Takahiro, Meekan, Mark G., Smith, Martin K.S., Mokhatla, Mohlamatsane M., Soh, Malcolm C.K., Pang, Roanna Y.T., Ng, Breyl X.K., Lee, Benjamin P.Y.-H., Loo, Adrian H.B., Er, Kenneth B.H., Souza, Gabriel B.G., Stallings, Christopher D., Curtis, Joseph S., Faletti, Meaghan E., Peake, Jonathan A., Schram, Michael J., Wall, Kara R., Terry, Carina, Rothendler, Matt, Zipf, Lucy, Ulloa, Juan Sebastián, Hernández-Palma, Angélica, Gómez-Valencia, Bibiana, Cruz-Rodríguez, Cristian, Herrera-Varón, Yenifer, Roa, Margarita, Rodríguez-Buriticá, Susana, Ochoa-Quintero, Jose Manuel, Vardi, Reut, Vázquez, Víctor, Requena-Mesa, Christian, Warrington, Miyako H., Taylor, Michelle E., Woodall, Lucy C., Stefanoudis, Paris V., Zhang, Xiangliang, Yang, Qiang, Zukerman, Yuval, Sigal, Zehava, Ayali, Amir, Clua, Eric E.G., Carzon, Pamela, Seguine, Clementine, Corradini, Andrea, Pedrotti, Luca, Foley, Catherine M., Gagnon, Catherine Alexandra, Panipakoochoo, Elijah, Milanes, Celene B., Botero, Camilo M., Velázquez, Yunior R., Milchakova, Nataliya A., Morley, Simon A., Martin, Stephanie M., Nanni, Veronica, Otero, Tanya, Wakeling, Julia, Abarro, Sarah, Piou, Cyril, Sobral, Ana F.L., Soto, Eulogio H., Weigel, Emily G., Bernal-Ibáñez, Alejandro, Gestoso, Ignacio, Cacabelos, Eva, Cagnacci, Francesca, Devassy, Reny P., Loretto, Matthias-Claudio, Moraga, Paula, Rutz, Christian, and Duarte, Carlos M.

Published
2021
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5. Major threats to a migratory raptor vary geographically along the eastern Mediterranean flyway

Author

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, ElSafoury, Hana, Endris, Ahmed, Asswad, Nabegh Ghazal, Harry, Junior H., Ivande, Sam T., Jbour, Sharif, Kapsalis, Eleftherios, Kret, Elzbieta, Mahamued, Bruktawit A., Manu, Shiiwua A., Mengistu, Solomon, Moussa Zabeirou, Abdoul R., Muhammad, Sulaiman I., Nakev, Slave, Ngari, Alex, Onoja, Joseph, Osta, Maher, Özuslu, Serdar, Petrovski, Nenad, Popgeorgiev, Georgi, Pourchier, Cloé, Qaneer, Tareq, Ruffo, Alazar, Shobrak, Mohammed, Sidiropoulos, Lavrentis, Skartsi, Theodora, Sözüer, Özgün, Stara, Kalliopi, Tesfaye, Million, Topi, Mirjan, Vavylis, Dimitrios, Velevski, Metodija, Vorpsi, Zydjon, Wondafrash, Mengistu, Xeka, Erald, Yeniyurt, Can, Yordanov, Emil, and Nikolov, Stoyan C.

Published
2021
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6. Egyptian vulture Neophron percnopterus

Author

Oppel, Steffen, primary, Buechley, Evan R., additional, López-López, Pascual, additional, Phipps, Louis, additional, Arkumarev, Volen, additional, Bounas, Anastasios, additional, Williams, Freddie, additional, Dobrev, Vladimir, additional, Dobrev, Dobromir, additional, Stoychev, Stoycho, additional, Kret, Elzbieta, additional, Cenerini, Anna, additional, Ceccolini, Guido, additional, Saravia, Victoria, additional, and Nikolov, Stoyan C., additional

Published
2021
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7. Tracking data highlight the importance of human-induced mortality for large migratory birds at a flyway scale

Author

Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales, Universidad de Alicante. Departamento de Didáctica General y Didácticas Específicas, Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías, Serratosa, Juan, Oppel, Steffen, Rotics, Shay, Santangeli, Andrea, Butchart, Stuart H.M., Cano-Alonso, Luis S., Tellería Jorge, José Luis, Kemp, Ryno, Nicholas, Aaron, Kalvāns, Aigars, Galarza, Aitor, Franco, Aldina M.A., Andreotti, Alessandro, Kirschel, Alexander N.G., Ngari, Alex, Soutullo, Alvaro, Bermejo, Ana, Botha, Andre J., Ferri, Andrea, Evangelidis, Angelos, Cenerini, Anna, Stamenov, Anton, Hernández-Matías, Antonio, Aradis, Arianna, Grozdanov, Atanas P., Rodríguez, Beneharo, Sekercioğlu, Cağan H., Cerecedo-Iglesias, Catuxa, Kassara, Christina, Barboutis, Christos, Bracebridge, Claire, García Ripollés, Clara, Kendall, Corinne J., Denac, Damijan, Schabo, Dana G., Barber, David R., Popov, Dimitar V., Dobrev, Dobromir D., Mallia, Egidio, Kmetova-Biro, Elena, Álvarez, Ernesto, Buechley, Evan R., Bragin, Evgeny A., Cordischi, Fabrizio, Zengeya, Fadzai M., Monti, Flavio, Mougeot, François, Tate, Gareth, Stoyanov, Georgi, Dell’Omo, Giacomo, Lucia, Giuseppe, Gradev, Gradimir, Ceccolini, Guido, Friedemann, Guilad, Bauer, Hans-Günther, Kolberg, Holger, Peshev, Hristo, Catry, Inês, Øien, Ingar J., Carbonell Alanís, Isidoro, Literák, Ivan, Pokrovsky, Ivan, Ojaste, Ivar, Østnes, Jan E., Puente, Javier de la, Real, Joan, Guilherme, João L., González, José C., Fernández-García, José M., Gil, Juan Antonio, Terraube, Julien, Poprach, Karel, Aghababyan, Karen, Klein, Katharina, Bildstein, Keith L., Wolter, Kerri, Janssens, Kjell, Kittelberger, Kyle D., Thompson, Lindy J., AlJahdhami, Mansoor H., Galán, Manuel, Tobolka, Marcin, Posillico, Mario, Cipollone, Mario, Gschweng, Marion, Strazds, Māris, Boorman, Mark, Zvidzai, Mark, Acácio, Marta, Romero, Marta, Wikelski, Martin, Schmidt, Matthias, Sarà, Maurizio, McGrady, Michael J., Dagys, Mindaugas, Mackenzie, Monique L., Al Taq, Muna, Mgumba, Msafiri P., Virani, Munir Z., Kassinis, Nicolaos I., Borgianni, Nicolò, Thie, Nikki, Tsiopelas, Nikos, Anglister, Nili, Farwig, Nina, Sapir, Nir, Kleven, Oddmund, Krone, Oliver, Duriez, Olivier, Spiegel, Orr, Al Nouri, Osama, López-López, Pascual, Byholm, Patrik, Kamath, Pauline L., Mirski, Paweł, Palatitz, Peter, Serroni, Pietro, Raab, Rainer, Buij, Ralph, Žydelis, Ramūnas, Nathan, Ran, Bowie, Rauri C.K., Tsiakiris, Rigas, Hatfield, Richard Stratton, Harel, Roi, Kroglund, Rolf T., Efrat, Ron, Limiñana, Rubén, Javed, Salim, Marinković, Saša P., Rösner, Sascha, Pekarsky, Sasha, Kapila, Shiv R., Marin, Simeon, Krejčí, Šimon, Giokas, Sinos, Tumanyan, Siranush, Turjeman, Sondra, Krüger, Sonja C., Ewing, Steven R., Stoychev, Stoycho, Nikolov, Stoyan C., Qaneer, Tareq E., Spatz, Theresa, Hadjikyriakou, Thomas G., Mueller, Thomas, Katzner, Todd E., Aarvak, Tomas, Veselovský, Tomáš, Nygård, Torgeir, Mellone, Ugo, Väli, Ülo, Sellis, Urmas, Urios, Vicente, Nemček, Vladimír, Arkumarev, Volen, Getz, Wayne M., Fiedler, Wolfgang, Van den Bossche, Willem, Lehnardt, Yael, Jones, Victoria R., Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales, Universidad de Alicante. Departamento de Didáctica General y Didácticas Específicas, Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías, Serratosa, Juan, Oppel, Steffen, Rotics, Shay, Santangeli, Andrea, Butchart, Stuart H.M., Cano-Alonso, Luis S., Tellería Jorge, José Luis, Kemp, Ryno, Nicholas, Aaron, Kalvāns, Aigars, Galarza, Aitor, Franco, Aldina M.A., Andreotti, Alessandro, Kirschel, Alexander N.G., Ngari, Alex, Soutullo, Alvaro, Bermejo, Ana, Botha, Andre J., Ferri, Andrea, Evangelidis, Angelos, Cenerini, Anna, Stamenov, Anton, Hernández-Matías, Antonio, Aradis, Arianna, Grozdanov, Atanas P., Rodríguez, Beneharo, Sekercioğlu, Cağan H., Cerecedo-Iglesias, Catuxa, Kassara, Christina, Barboutis, Christos, Bracebridge, Claire, García Ripollés, Clara, Kendall, Corinne J., Denac, Damijan, Schabo, Dana G., Barber, David R., Popov, Dimitar V., Dobrev, Dobromir D., Mallia, Egidio, Kmetova-Biro, Elena, Álvarez, Ernesto, Buechley, Evan R., Bragin, Evgeny A., Cordischi, Fabrizio, Zengeya, Fadzai M., Monti, Flavio, Mougeot, François, Tate, Gareth, Stoyanov, Georgi, Dell’Omo, Giacomo, Lucia, Giuseppe, Gradev, Gradimir, Ceccolini, Guido, Friedemann, Guilad, Bauer, Hans-Günther, Kolberg, Holger, Peshev, Hristo, Catry, Inês, Øien, Ingar J., Carbonell Alanís, Isidoro, Literák, Ivan, Pokrovsky, Ivan, Ojaste, Ivar, Østnes, Jan E., Puente, Javier de la, Real, Joan, Guilherme, João L., González, José C., Fernández-García, José M., Gil, Juan Antonio, Terraube, Julien, Poprach, Karel, Aghababyan, Karen, Klein, Katharina, Bildstein, Keith L., Wolter, Kerri, Janssens, Kjell, Kittelberger, Kyle D., Thompson, Lindy J., AlJahdhami, Mansoor H., Galán, Manuel, Tobolka, Marcin, Posillico, Mario, Cipollone, Mario, Gschweng, Marion, Strazds, Māris, Boorman, Mark, Zvidzai, Mark, Acácio, Marta, Romero, Marta, Wikelski, Martin, Schmidt, Matthias, Sarà, Maurizio, McGrady, Michael J., Dagys, Mindaugas, Mackenzie, Monique L., Al Taq, Muna, Mgumba, Msafiri P., Virani, Munir Z., Kassinis, Nicolaos I., Borgianni, Nicolò, Thie, Nikki, Tsiopelas, Nikos, Anglister, Nili, Farwig, Nina, Sapir, Nir, Kleven, Oddmund, Krone, Oliver, Duriez, Olivier, Spiegel, Orr, Al Nouri, Osama, López-López, Pascual, Byholm, Patrik, Kamath, Pauline L., Mirski, Paweł, Palatitz, Peter, Serroni, Pietro, Raab, Rainer, Buij, Ralph, Žydelis, Ramūnas, Nathan, Ran, Bowie, Rauri C.K., Tsiakiris, Rigas, Hatfield, Richard Stratton, Harel, Roi, Kroglund, Rolf T., Efrat, Ron, Limiñana, Rubén, Javed, Salim, Marinković, Saša P., Rösner, Sascha, Pekarsky, Sasha, Kapila, Shiv R., Marin, Simeon, Krejčí, Šimon, Giokas, Sinos, Tumanyan, Siranush, Turjeman, Sondra, Krüger, Sonja C., Ewing, Steven R., Stoychev, Stoycho, Nikolov, Stoyan C., Qaneer, Tareq E., Spatz, Theresa, Hadjikyriakou, Thomas G., Mueller, Thomas, Katzner, Todd E., Aarvak, Tomas, Veselovský, Tomáš, Nygård, Torgeir, Mellone, Ugo, Väli, Ülo, Sellis, Urmas, Urios, Vicente, Nemček, Vladimír, Arkumarev, Volen, Getz, Wayne M., Fiedler, Wolfgang, Van den Bossche, Willem, Lehnardt, Yael, and Jones, Victoria R.

Abstract

Human-induced direct mortality affects huge numbers of birds each year, threatening hundreds of species worldwide. Tracking technologies can be an important tool to investigate temporal and spatial patterns of bird mortality as well as their drivers. We compiled 1704 mortality records from tracking studies across the African-Eurasian flyway for 45 species, including raptors, storks, and cranes, covering the period from 2003 to 2021. Our results show a higher frequency of human-induced causes of mortality than natural causes across taxonomic groups, geographical areas, and age classes. Moreover, we found that the frequency of human-induced mortality remained stable over the study period. From the human-induced mortality events with a known cause (n = 637), three main causes were identified: electrocution (40.5 %), illegal killing (21.7 %), and poisoning (16.3 %). Additionally, combined energy infrastructure-related mortality (i.e., electrocution, power line collision, and wind-farm collision) represented 49 % of all human-induced mortality events. Using a random forest model, the main predictors of human-induced mortality were found to be taxonomic group, geographic location (latitude and longitude), and human footprint index value at the location of mortality. Despite conservation efforts, human drivers of bird mortality in the African-Eurasian flyway do not appear to have declined over the last 15 years for the studied group of species. Results suggest that stronger conservation actions to address these threats across the flyway can reduce their impacts on species. In particular, projected future development of energy infrastructure is a representative example where application of planning, operation, and mitigation measures can enhance bird conservation.

Published
2024

9. Assessing genetic diversity patterns at neutral and adaptive loci to inform population reinforcement of an endangered migratory vulture

Author

Şekercioğlu, Çağan Hakkı (ORCID 0000-0003-3193-0377 & YÖK ID 327589), Bounas, Anastasios; Saravia-Mullin, Victoria; Méndez, Maria; Arkumarev, Volen; Aghajanyan, Lusine; Ararat, Korsh; Buechley, Evan; Dobrev, Vladimir; Dobrev, Dobromir; Efrat, Ron; Klisurov, Ivaylo; Kret, Elzbieta); Skartsi, Theodora; Oppel, Steffen; Petrov, Rusko; Vaidl, Anton; Donázar, José A.; Nikolov, Stoyan C.; Sotiropoulos, Konstantinos, College of Sciences, Department of Molecular Biology and Genetics, Şekercioğlu, Çağan Hakkı (ORCID 0000-0003-3193-0377 & YÖK ID 327589), Bounas, Anastasios; Saravia-Mullin, Victoria; Méndez, Maria; Arkumarev, Volen; Aghajanyan, Lusine; Ararat, Korsh; Buechley, Evan; Dobrev, Vladimir; Dobrev, Dobromir; Efrat, Ron; Klisurov, Ivaylo; Kret, Elzbieta); Skartsi, Theodora; Oppel, Steffen; Petrov, Rusko; Vaidl, Anton; Donázar, José A.; Nikolov, Stoyan C.; Sotiropoulos, Konstantinos, College of Sciences, and Department of Molecular Biology and Genetics

Abstract

One of the primary goals of conservation translocation programs should be the maintenance of both population demographic stability and genetic diversity. Here, we provide genetic management recommendations to inform a population reinforcement of the declining Egyptian Vulture population in the Balkans. Specifically, we examined whether the number of released individuals is sufficient to prevent genetic diversity loss due to random genetic drift and what the origin of the individuals should be that comprise the captive breeding pool. To this aim, we estimated and assessed genetic diversity levels and genetic structure of Egyptian Vulture populations across much of the species’ range using both neutral and non-neutral candidate loci involved in migration. We then evaluated the effects of the currently proposed population management scheme and candidate source populations on retaining allelic diversity. Our results show low differentiation values among populations and absence of genetic structure which point to past high gene flow. Furthermore, there was no predicted significant impact of different source populations on the genetic diversity of the recipient Balkan population. We also found that the declining Egyptian Vulture population in the Balkans still retains high levels of genetic diversity and therefore genetic diversity restoration is not currently needed. However, without any management, diversity is likely to decrease fast because of increased genetic drift as the population size continues to decline. Population reinforcement with nine birds per year for 20 years would provide sufficient demographic support for the population to retain > 85% of rare allelic diversity. Birds originating from the Balkans would ensure ecological and behavioral similarity and thus would be the best option for reinforcement. Nevertheless, our results demonstrate that to prevent further population contraction and loss of adaptive alleles, releasing individuals of different origin, European Union; HEAL-Link Greece; LIFE projects; “The Return of the Neophron” (LIFE programme); “Egyptian Vulture New LIFE” (LIFE programme, www.LifeNeophron.eu); Leventis Foundation and the MAVA Foundation; Israeli Academy of Science’s Adams Fellowship

Published
2023

14. POPULATION STATUS OF THE EGYPTIAN VULTURE (NEOPHRON PERCNOPTERUS) IN ALBANIA

Author

Topi, Mirjan, Hallman, Ben, Haritakis Pappaionnou, Saravia, Victoria, Bounas, Anastasios, Volen Arkumarev, Dobrev, Vladimir, Zydjon Vorpsi, Bino, Taulant, Dyulgerova, Sylvia, Gradinarov, Dimitar, Iankov, Petar, Iliev, Mihail, Lo��e, Ervis, Mumun, Sanie, Saliaj, Oresta, Staneva, Anna, Xherri, Xhemal, Ziu, Denada, and Nikolov, Stoyan C

Published
2022
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16. Egyptian Vulture Online Conference 2022: An overview of the outcomes and perspectives for further work.

Author

Weston, Jenny, Saravia-Mullin, Victoria, and Nikolov, Stoyan C.

Abstract

This proceedings contains 65 extended abstracts of presentations from speakers representing 26 countries made at the Global Egyptian Vulture Online Conference, held from 8-9 November 2022. The proceedings is divided into eleven sections: Status in Europe; Status in Africa; Status in Asia; Status in the Middle East; Threats and Mitigation; Threats - Focus on Poisoning; Engagement with Communities and Communication Campaigns; Monitoring and Research; Innovative Techniques in Egyptian Vulture Conservation; and Round Tables. The individual abstracts cover a broad range of topics about Egyptian Vulture biology, ecology and management, including theory and survey techniques, population monitoring and modelling, case studies, different conservation concepts, and approaches in working with stakeholders. This proceedings provide scientists, conservationists and decision makers with state-of-the-art information on vulture research, conservation and awareness. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Population reinforcement and demographic changes needed to stabilise the population of a migratory vulture

Author

Oppel, Steffen, primary, Saravia, Victoria, additional, Bounas, Anastasios, additional, Arkumarev, Volen, additional, Kret, Elzbieta, additional, Dobrev, Vladimir, additional, Dobrev, Dobromir, additional, Kordopatis, Panagiotis, additional, Skartsi, Theodora, additional, Velevski, Metodija, additional, Petrovski, Nenad, additional, Bino, Taulant, additional, Topi, Mirjan, additional, Klisurov, Ivaylo, additional, Stoychev, Stoycho, additional, and Nikolov, Stoyan C., additional

Published
2021
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19. Electric infrastructure poses a significant threat at congregation sites of the globally threatened Steppe Eagle Aquila nipalensis in Saudi Arabia

Author

SHOBRAK, MOHAMMED, primary, ALASMARI, SAHEEM, additional, ALQTHAMI, ABDULAZIZ, additional, ALQTHAMI, FAHAD, additional, AL-OTAIBI, ABDOULRAHMAN, additional, ZOUBI, MOHAMMAD AL, additional, MOGHRABI, LAITH EL, additional, JBOUR, SHARIF, additional, ASSWAD, NABEGH GHAZAL, additional, OPPEL, STEFFEN, additional, ARKUMAREV, VOLEN, additional, and NIKOLOV, STOYAN C., additional

Published
2021
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20. Differential survival throughout the full annual cycle of a migratory bird presents a life‐history trade‐off

Author

Buechley, Evan R., primary, Oppel, Steffen, additional, Efrat, Ron, additional, Phipps, W. Louis, additional, Carbonell Alanís, Isidoro, additional, Álvarez, Ernesto, additional, Andreotti, Alessandro, additional, Arkumarev, Volen, additional, Berger‐Tal, Oded, additional, Bermejo Bermejo, Ana, additional, Bounas, Anastasios, additional, Ceccolini, Guido, additional, Cenerini, Anna, additional, Dobrev, Vladimir, additional, Duriez, Olivier, additional, García, Javier, additional, García‐Ripollés, Clara, additional, Galán, Manuel, additional, Gil, Alberto, additional, Giraud, Lea, additional, Hatzofe, Ohad, additional, Iglesias‐Lebrija, Juan José, additional, Karyakin, Igor, additional, Kobierzycki, Erik, additional, Kret, Elzbieta, additional, Loercher, Franziska, additional, López‐López, Pascual, additional, Miller, Ygal, additional, Mueller, Thomas, additional, Nikolov, Stoyan C., additional, de la Puente, Javier, additional, Sapir, Nir, additional, Saravia, Victoria, additional, Şekercioğlu, Çağan H., additional, Sillett, T. Scott, additional, Tavares, José, additional, Urios, Vicente, additional, and Marra, Peter P., additional

Published
2021
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21. Pursuit of 'sustainable' development may contribute to the vulture crisis in East Africa.

Author

OPPEL, STEFFEN, RUFFO, ALAZAR DAKA, BAKARI, SAMUEL, TESFAYE, MILLION, MENGISTU, SOLOMON, WONDAFRASH, MENGISTU, ENDRIS, AHMED, POURCHIER, CLOÉ, NGARI, ALEX, ARKUMAREV, VOLEN, and NIKOLOV, STOYAN C.

Abstract

Summary: The United Nations Sustainable Development Goals aim to improve livelihoods and maintain functioning ecosystems, and include the provision of electricity and the prevention of desertification. We show that the pursuit of those two goals can lead to developments that put critical ecosystem functions at risk. Vultures are scavengers that provide sanitary ecosystem services, but their populations across Africa are declining due to poisoning, electrocution, and collision with power infrastructure. The extent to which the pursuit of sustainable development threatens vultures in Africa is unclear. We surveyed 227 km of powerlines in Ethiopia, which revealed bird mortality (0.15 vulture carcasses / km) at power infrastructure constructed under a National Electrification Programme to provide universal electricity access by 2025. We also interviewed 190 local pastoralists in 10 areas about livelihood challenges, which revealed that the bush Prosopis juliflora, which was originally introduced to prevent desertification but then invaded north-eastern Ethiopia, increased livestock predation and motivated the use of poison to control predators. Actions to increase universal access to electricity and to reduce desertification therefore have undesired side-effects that increase vulture mortality through electrocution and poisoning. To avoid negatively affecting local vulture populations and the services they provide, we urge governments to use infrastructure designs that minimise the risk of electrocution and assist pastoralists to protect their livestock and reduce the risk of poisoning to vultures and other wildlife. [ABSTRACT FROM AUTHOR]

Published
2022
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22. Electric infrastructure poses a significant threat at congregation sites of the globally threatened Steppe Eagle Aquila nipalensis in Saudi Arabia.

Author

SHOBRAK, MOHAMMED, ALASMARI, SAHEEM, ALQTHAMI, ABDULAZIZ, ALQTHAMI, FAHAD, AL-OTAIBI, ABDOULRAHMAN, AL ZOUBI, MOHAMMAD, EL MOGHRABI, LAITH, JBOUR, SHARIF, GHAZAL ASSWAD, NABEGH, OPPEL, STEFFEN, ARKUMAREV, VOLEN, and NIKOLOV, STOYAN C.

Abstract

Summary: Saudi Arabia is the fastest growing electricity consumer in the Middle East, with a rapidly expanding network of powerlines. Bird mortality through electrocution and collision has been recorded in the country, but so far there is little information as to how much the electricity infrastructure affects globally threatened raptor populations that migrate to Saudi Arabia. In 2019, the world's largest wintering congregation of Steppe Eagles Aquila nipalensis was discovered near a rubbish dump in central Saudi Arabia. We evaluated whether powerlines in the vicinity of this, and another congregation site, caused mortality of large birds. In November 2019, we surveyed powerlines within 6 km of two focal rubbish dumps at Al Qunfudhah (12.4 km) and Ushaiqer (2 km). We found 52 carcasses of five species, of which 85% were Steppe Eagles. Based on the age of these carcasses, we coarsely extrapolate that 14.4 km of powerlines near these two congregation sites may kill 94–240 Steppe Eagles per winter, representing up to 0.3% of their global population. We call for the urgent safeguarding of powerlines that cause mortality near known Steppe Eagle congregation sites, and the adoption and implementation of regulations that ensure that future infrastructure is constructed with designs that are safe for birds. [ABSTRACT FROM AUTHOR]

Published
2022
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23. Egyptian Vulture status in Ethiopia.

Author

Mengistu, Solomon, Wondafrash, Mengistu, Arkumareva, Volen, and Nikolov, Stoyan C.

Abstract

The article focuses on the Egyptian Vulture's status in Ethiopia, highlighting its importance as the primary wintering ground in East Africa, addressing recent discrepancies in wintering counts, and emphasizing conservation efforts against threats such as power lines and illegal poisoning.

Published
2023
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24. Egyptian Vulture Online Conference 2022: An overview of the outcomes and perspectives for further work.

Author

Weston, Jenny, Saravia-Mullin, Victoria, and Nikolov, Stoyan C.

Abstract

The article provides an overview of the Egyptian Vulture Online Conference 2022, highlighting the urgent need for global cooperation in the conservation of this endangered species. Topics discussed include the status of Egyptian Vultures across different regions, the impact of various threats like poisoning and electrocution, and innovative conservation techniques such as telemetry and community engagement.

Published
2022
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25. Spatial and Temporal Variability in Migration of a Soaring Raptor Across Three Continents

Author

Phipps, W. Louis, primary, López-López, Pascual, additional, Buechley, Evan R., additional, Oppel, Steffen, additional, Álvarez, Ernesto, additional, Arkumarev, Volen, additional, Bekmansurov, Rinur, additional, Berger-Tal, Oded, additional, Bermejo, Ana, additional, Bounas, Anastasios, additional, Alanís, Isidoro Carbonell, additional, de la Puente, Javier, additional, Dobrev, Vladimir, additional, Duriez, Olivier, additional, Efrat, Ron, additional, Fréchet, Guillaume, additional, García, Javier, additional, Galán, Manuel, additional, García-Ripollés, Clara, additional, Gil, Alberto, additional, Iglesias-Lebrija, Juan José, additional, Jambas, José, additional, Karyakin, Igor V., additional, Kobierzycki, Erick, additional, Kret, Elzbieta, additional, Loercher, Franziska, additional, Monteiro, Antonio, additional, Morant Etxebarria, Jon, additional, Nikolov, Stoyan C., additional, Pereira, José, additional, Peške, Lubomír, additional, Ponchon, Cecile, additional, Realinho, Eduardo, additional, Saravia, Victoria, additional, Sekercioğlu, Cağan H., additional, Skartsi, Theodora, additional, Tavares, José, additional, Teodósio, Joaquim, additional, Urios, Vicente, additional, and Vallverdú, Núria, additional

Published
2019
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26. Spatial and Temporal Variability in Migration of a Soaring Raptor Across Three Continents

Author

Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales, Phipps, W. Louis, López-López, Pascual, Buechley, Evan R., Oppel, Steffen, Álvarez, Ernesto, Arkumarev, Volen, Bekmansurov, Rinur, Berger-Tal, Oded, Bermejo, Ana, Bounas, Anastasios, Carbonell Alanís, Isidoro, Puente, Javier de la, Dobrev, Vladimir, Duriez, Olivier, Efrat, Ron, Fréchet, Guillaume, García, Javier, Galán, Manuel, García Ripollés, Clara, Gil, Alberto, Iglesias-Lebrija, Juan José, Jambas, José, Karyakin, Igor V., Kobierzycki, Erick, Kret, Elzbieta, Loercher, Franziska, Monteiro, Antonio, Morant, Jon, Nikolov, Stoyan C., Pereira, José, Peške, Lubomír, Ponchon, Cecile, Realinho, Eduardo, Saravia, Victoria, Sekercioğlu, Cağan H., Skartsi, Theodora, Tavares, José, Teodósio, Joaquim, Urios, Vicente, Vallverdú, Núria, Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales, Phipps, W. Louis, López-López, Pascual, Buechley, Evan R., Oppel, Steffen, Álvarez, Ernesto, Arkumarev, Volen, Bekmansurov, Rinur, Berger-Tal, Oded, Bermejo, Ana, Bounas, Anastasios, Carbonell Alanís, Isidoro, Puente, Javier de la, Dobrev, Vladimir, Duriez, Olivier, Efrat, Ron, Fréchet, Guillaume, García, Javier, Galán, Manuel, García Ripollés, Clara, Gil, Alberto, Iglesias-Lebrija, Juan José, Jambas, José, Karyakin, Igor V., Kobierzycki, Erick, Kret, Elzbieta, Loercher, Franziska, Monteiro, Antonio, Morant, Jon, Nikolov, Stoyan C., Pereira, José, Peške, Lubomír, Ponchon, Cecile, Realinho, Eduardo, Saravia, Victoria, Sekercioğlu, Cağan H., Skartsi, Theodora, Tavares, José, Teodósio, Joaquim, Urios, Vicente, and Vallverdú, Núria

Abstract

Disentangling individual- and population-level variation in migratory movements is necessary for understanding migration at the species level. However, very few studies have analyzed these patterns across large portions of species' distributions. We compiled a large telemetry dataset on the globally endangered Egyptian Vulture Neophron percnopterus (94 individuals, 188 completed migratory journeys), tracked across ~70% of the species' global range, to analyze spatial and temporal variability of migratory movements within and among individuals and populations. We found high migratory connectivity at large spatial scales (i.e., different subpopulations showed little overlap in wintering areas), but very diffuse migratory connectivity within subpopulations, with wintering ranges up to 4,000 km apart for birds breeding in the same region and each subpopulation visiting up to 28 countries (44 in total). Additionally, Egyptian Vultures exhibited a high level of variability at the subpopulation level and flexibility at the individual level in basic migration parameters. Subpopulations differed significantly in travel distance and straightness of migratory movements, while differences in migration speed and duration differed as much between seasons and among individuals within subpopulations as between subpopulations. The total distances of the migrations completed by individuals from the Balkans and Caucasus were up to twice as long and less direct than those in Western Europe, and consequently were longer in duration, despite faster migration speeds. These differences appear to be largely attributable to more numerous and wider geographic barriers (water bodies) along the eastern flyway. We also found that adult spring migrations to Western Europe and the Balkans were longer and slower than fall migrations. We encourage further research to assess the underlying mechanisms for these differences and the extent to which environmental change could affect Egyptian Vulture move

Published
2019

27. Spatial and temporal variability in migration of a soaring raptor across three continents

Author

Şekercioğlu, Çağan Hakkı, Phipps, W. Louis; Lopez-Lopez, Pascual; Buechley, Evan R.; Oppel, Steffen; Alvarez, Ernesto; Arkumarev, Volen; Bekmansurov, Rinur; Berger-Tal, Oded; Bermejo, Ana; Bounas, Anastasios; Carbonell Alanis, Isidoro; de la Puente, Javier; Dobrev, Vladimir; Duriez, Olivier; Efrat, Ron; Frechet, Guillaume; Garcia, Javier; Galan, Manuel; Garcia-Ripolles, Clara; Gil, Alberto; Jose Iglesias-Lebrija, Juan; Jambas, Jose; Karyakin, Igor V.; Kobierzycki, Erick; Kret, Elzbieta; Loercher, Franziska; Monteiro, Antonio; Morant Etxebarria, Jon; Nikolov, Stoyan C.; Pereira, Jose; Peske, Lubomir; Ponchon, Cecile; Realinho, Eduardo; Saravia, Victoria; Skartsi, Theodora; Tavares, Jose; Teodosio, Joaquim; Urios, Vicente; Vallverdu, Nuria, College of Sciences, Department of Molecular Biology and Genetics, Şekercioğlu, Çağan Hakkı, Phipps, W. Louis; Lopez-Lopez, Pascual; Buechley, Evan R.; Oppel, Steffen; Alvarez, Ernesto; Arkumarev, Volen; Bekmansurov, Rinur; Berger-Tal, Oded; Bermejo, Ana; Bounas, Anastasios; Carbonell Alanis, Isidoro; de la Puente, Javier; Dobrev, Vladimir; Duriez, Olivier; Efrat, Ron; Frechet, Guillaume; Garcia, Javier; Galan, Manuel; Garcia-Ripolles, Clara; Gil, Alberto; Jose Iglesias-Lebrija, Juan; Jambas, Jose; Karyakin, Igor V.; Kobierzycki, Erick; Kret, Elzbieta; Loercher, Franziska; Monteiro, Antonio; Morant Etxebarria, Jon; Nikolov, Stoyan C.; Pereira, Jose; Peske, Lubomir; Ponchon, Cecile; Realinho, Eduardo; Saravia, Victoria; Skartsi, Theodora; Tavares, Jose; Teodosio, Joaquim; Urios, Vicente; Vallverdu, Nuria, College of Sciences, and Department of Molecular Biology and Genetics

Abstract

Disentangling individual- and population-level variation in migratory movements is necessary for understanding migration at the species level. However, very few studies have analyzed these patterns across large portions of species' distributions. We compiled a large telemetry dataset on the globally endangered egyptian vulture neophron percnopterus (94 individuals, 188 completed migratory journeys), tracked across similar to 70% of the species' global range, to analyze spatial and temporal variability of migratory movements within and among individuals and populations. We found high migratory connectivity at large spatial scales (i.e., different subpopulations showed little overlap in wintering areas), but very diffuse migratory connectivity within subpopulations, with wintering ranges up to 4,000 km apart for birds breeding in the same region and each subpopulation visiting up to 28 countries (44 in total). Additionally, egyptian vultures exhibited a high level of variability at the subpopulation level and flexibility at the individual level in basic migration parameters. Subpopulations differed significantly in travel distance and straightness of migratory movements, while differences in migration speed and duration differed as much between seasons and among individuals within subpopulations as between subpopulations. The total distances of the migrations completed by individuals from the balkans and caucasus were up to twice as long and less direct than those in western europe, and consequently were longer in duration, despite faster migration speeds. These differences appear to be largely attributable to more numerous and wider geographic barriers (water bodies) along the eastern flyway. We also found that adult spring migrations to Western europe and the balkans were longer and slower than fall migrations. We encourage further research to assess the underlying mechanisms for these differences and the extent to which environmental change could affect egyptian vu, Horizon 2020; European Union (European Union); LIFE+ projects; Basque Government; AG Leventis Foundation; MAVA; National Science Foundation (NSF); Christensen Fund; National Geographic Society; Whitley Fund for Nature; State Nature Reserve Dagestanskiy; Russian Raptor Research and Conservation Network; DREAL Nouvelle-Aquitaine-Fondation d'entreprises Barjane; GREFA (Grupo para la Rehabilitacion de la Fauna Autoctona y su habitat)-Endangered Species Monitoring Project; Poison Sentinels Project of WWF/Spain; La Rioja Regional Government in La Rioja; Fundacion Hazi and Diputacion Foral de Gipuzkoa within the Interreg POCTEFA-ECOGYP project in Gipuzkoa; Faruk Yalcin Zoo

Published
2019

28. Egyptian Vulture status in Ethiopia.

Author

Mengistu, Solomon, Wondafrash, Mengistu, Arkumareva, Volen, and Nikolov, Stoyan C.

Abstract

The article discusses the status of Egyptian Vultures in Ethiopia, emphasizing the country as a crucial wintering ground for the species in East Africa. Topics discussed include historical and recent population counts, the significant mortality due to power lines and illegal poisoning, and ongoing conservation efforts including collaboration with power companies and public awareness campaigns.

Published
2022

31. Identifying critical migratory bottlenecks and high‐use areas for an endangered migratory soaring bird across three continents

Author

Buechley, Evan R., primary, Oppel, Steffen, additional, Beatty, William S., additional, Nikolov, Stoyan C., additional, Dobrev, Vladimir, additional, Arkumarev, Volen, additional, Saravia, Victoria, additional, Bougain, Clementine, additional, Bounas, Anastasios, additional, Kret, Elzbieta, additional, Skartsi, Theodora, additional, Aktay, Lale, additional, Aghababyan, Karen, additional, Frehner, Ethan, additional, and Şekercioğlu, Çağan H., additional

Published
2018
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40. Congregations of wintering Egyptian Vultures Neophron percnopterus in Afar, Ethiopia: present status and implications for conservation

Author

Arkumarev, Volen, Dobrev, Vladimir, Abebe, Yilma D, Popgeorgiev, Georgi, and Nikolov, Stoyan C

Abstract

The Endangered Egyptian Vulture Neophron percnopterus congregates in communal roosts in the wintering areas and where food availability is high, where even a single threat might lead to substantial population declines. Thus, more research on the congregation sites is needed for timely detection of threats and effectively directed conservation measures. We studied bird numbers, use of roosting substrates and roosting habitat of wintering Egyptian Vultures in Ethiopia. Vultures were counted using the road-count technique in 2009, 2010 and 2013 along c. 600 km of roads in the Afar region. Over 1 000 individuals were counted each year and the sites with the highest congregations were identified. Nearly half of the birds were adults and the majority roosted on bird-safe types of electric pylons. Most of the Egyptian Vultures were found below 500 m above sea level, in bare areas, open savannas or grasslands, and their abundance was negatively related to the amount of cover of bush vegetation. The distribution of roosting birds was not affected by distance to human settlements. To avoid disasterous effects on the population of the Egyptian Vultures, we strongly recommend that the sites sheltering the highest numbers of roosting birds should be included in the Important Bird Area network, the use of poisons should be banned, and dangerous power lines should be insulated or substituted with safer types.Keywords: Africa, declining population, endangered species, roosting, scavengerOSTRICH 2014, 85(2): 139–145

Published
2014

41. Conservation and the genetics of the declining Egyptian Vulture population in the Balkans: the role of ecological and microevolutionary processes.

Author

Bounas, Anastasios, Saravia-Mullin, Victoria, Méndez, Maria, Arkumarev, Volen, Aghajanyan, Lusine, Ararat, Korsh, Buechley, Evan, Dobrev, Vladimir, Dobrev, Dobromir, Efrat, Ron, Klisurov, Ivaylo, Kret, Elzbieta, Skartsi, Theodora, Oppel, Stefen, Petrov, Rusko, Şekercioğlu, Çağan H., Vaidl, Anton, Donázar, José A., Nikolov, Stoyan C., and Sotiropoulos, Konstantinos

Abstract

The article focuses on the genetic status of the declining Egyptian Vulture populations in the Balkans, aiming to provide genetic management recommendations for a population reinforcement program, considering factors such as genetic diversity and population structure.

Published
2023
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45. Identifying critical migratory bottlenecks and high‐use areas for an endangered migratory soaring bird across three continents.

Author

Frehner, Ethan, Şekercioğlu, Çağan H., Buechley, Evan R., Aktay, Lale, Aghababyan, Karen, Oppel, Steffen, Beatty, William S., Nikolov, Stoyan C., Dobrev, Vladimir, Arkumarev, Volen, Bougain, Clementine, Saravia, Victoria, Bounas, Anastasios, Kret, Elzbieta, and Skartsi, Theodora

Subjects
EGYPTIAN vulture, MIGRATORY birds, BIRD ecology, ORNITHOLOGY, CONSERVATION biology
Abstract

Migrant birds face a number of threats throughout their annual cycle, including persecution, collision with energy infrastructure, and habitat and climate change. A key challenge for the conservation of migrants is the identification of important habitat, including migratory concentration areas, because species survival rates may be determined by events in geographically very limited areas. Remote‐tracking technology is facilitating the identification of such critical habitat, although the strategic identification of important sites and incorporation of such knowledge in conservation planning remains limited. We tracked 45 individuals of an endangered, soaring migrant (Egyptian vulture Neophron percnopterus), over 75 complete migrations that traversed three continents along the Red Sea Flyway. We summarize and contextualize migration statistics by season and age class, including migration start, midpoint, and end dates, as well as linear and cumulative migration distance, migration duration and speed, and route straightness. Then, using dynamic Brownian bridge movement models, we quantified space use to identify the most important migratory bottlenecks and high‐use areas on the flyway. These areas each accounted for < 5% of the overall movement range of the tracked birds, yet > 20% of all tracks passed through bottlenecks, and > 50% of the overall vulture time spent on migration fell within high‐use areas. The most important sites were located at the southeastern Red Sea coast and Bab‐el‐Mandeb Strait (Saudi Arabia, Yemen, Djibouti), the Suez Canal zone (Egypt), and the Gulf of Iskenderun (Turkey). Discouragingly however, none of the area within the major migratory bottlenecks was protected and < 13% of the high‐use areas were protected. This demonstrates a very concerning gap in the protected area network for migratory soaring birds along the Red Sea Flyway. Because reducing threats at migratory concentrations can be a very efficient approach to protect populations, our work provides clear guidelines where conservation investment is urgently needed to benefit as many as 35 migratory soaring‐bird species that regularly use the Red Sea Flyway. [ABSTRACT FROM AUTHOR]

Published
2018
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46. The influence of land abandonment on farmland bird communities : a case study in the alluvial lowlands of Continental Croatia

Author

Radović, Andreja, Nikolov, Stoyan C., Tepić, Nataša, Mikulić, Krešimir, Budinski, Ivan, and Jelaska, Sven D.

Subjects
landscape structure, invasion, management, biodiversity, depopulation
Abstract

The abandonment of less productive agricultural land on the one hand and intensification and concentration of parcels on the other are the main characteristics of the Common Agricultural Policy (CAP) that Croatia is going to enforce when entering the EU. Due to demographic changes and the economic transition in Croatia as a consequence of war activities in 1990es, abandonment of substantial parts of the agricultural lands occurred. We investigated two habitat types in a protected area (50, 650 ha) in the continental part of the country: arable land and pastures. Both habitat types were formed and maintained by the agricultural activities and suffered from partial abandonment of production and maintenance. Data on bird communities were obtained during the breeding season in 2010, by a standard point count method designed in the way to avoid autocorrelation in data. Data was collected at 63 point-count stations and a total of 1447 individuals from 70 species were recorded during the study. Habitat characteristics were gathered through geographic information system (GIS) on the basis of CORINE Land cover for the country from several layers like database of habitat types and derivates of digital elevation model. We found that bird community structure was primarily associated with presence/abandonment of agricultural land use (traditional low intensity management, i.e. grazing and crops, vs. abandonment of these types of management) and habitat type, and that structure of bird communities of the same habitat type differs due to different management intensity. Land abandonment mostly influenced specialist bird species tied to pastures with significantly higher abundance in grazed pastures than in abandoned ones. However, the conservation value (detected according SPEC value of the species) of pastures still was not significantly different due to suitability of overgrown pastures on extremely wet year as 2010 for Acrocephalus species. Changes in bird community structure in arable lands had different pattern from those in pastures showing more rapid changes in structures of the pastoral communities after abandonment that is the. Finally, we emphasise on the urgent need for a national wide monitoring program for farmland birds in the whole country.

Published
2013

49. Population decline and range contraction of the Egyptian Vulture Neophron percnopterus in the Balkan Peninsula

Author

VELEVSKI, METODIJA, primary, NIKOLOV, STOYAN C., additional, HALLMANN, BEN, additional, DOBREV, VLADIMIR, additional, SIDIROPOULOS, LAVRENTIS, additional, SARAVIA, VICTORIA, additional, TSIAKIRIS, RIGAS, additional, ARKUMAREV, VOLEN, additional, GALANAKI, ANTONIA, additional, KOMINOS, THEODOROS, additional, STARA, KALLIOPI, additional, KRET, ELZBIETA, additional, GRUBAČ, BRATISLAV, additional, LISIČANEC, EMANUEL, additional, KASTRITIS, THANOS, additional, VAVYLIS, DIMITRIS, additional, TOPI, MIRJAN, additional, HOXHA, BLEDI, additional, and OPPEL, STEFFEN, additional

Published
2014
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