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Freshwater biodiversity in the Maghreb region remains largely unexplored, providing significant opportunities for further discovery. Algerian caddisflies have received relatively little attention. The present study aims to fill gaps in caddisfly taxonomy and distribution by conducting a comprehensive survey of rivers and streams in northeastern Algeria, with a focus on collecting adult caddisflies. Through our research, we identified a total of 28 species from Algeria, and a new caddisfly species, Hydropsyche tenerifa, collected in the Canary Islands, expanding our knowledge of the caddisfly fauna in North Africa. Among these discoveries, we describe 15 new species (H. cherfa, H. makhloufa, H. seybousa, H. algirica, H. dbabcha, H. farrahae, H. guitna, H. chenioura, H. edougha, H. louara, H. vinconi, H. linae, H. nardjissae, Agapetus ferrerasi, A. yasminae) from Algeria and reclassify three subspecies or varieties as distinct species (Wormaldia numidica, Thremma africanum, Mesophylax hoggarensis). In addition, our surveys led to the discovery of three previously unrecorded caddisfly species (Lype reducta, Lepidostoma kumanskii, and Adicella syriaca) in Algeria, as well as the expansion of the known range of seven additional species. These results underscore the importance of the Maghreb's freshwater biodiversity and highlight the need for a more comprehensive understanding of caddisfly taxonomy in the region. By providing a clearer taxonomy and distributional framework for caddisflies, our research establishes a solid foundation for future monitoring and conservation initiatives targeting these important aquatic insects and the ecosystems they inhabit.

Variations in habitat quality in space and time prompt birds to track these changes to optimise their fitness. We investigated movements of Greater Flamingos Phoenicopterus roseus between long-established North Mediterranean breeding colonies and a new, fairly unpredictable, intermittently suitable South Mediterranean breeding colony (Ezzemoul, Algeria). Among the flamingos observed as breeders at Ezzemoul in 2006 and 2009, 59 and 26 ringed individuals, respectively, were observed earlier during the same breeding season at another North Mediterranean colony, thus providing the first evidence of a within-season large scale displacement (> 1000km) from one colony to another. We suggest that breeding failure and a much higher nest density at the northern long-established colonies triggered these movements. Breeding success and body condition of chicks at Ezzemoul compared favourably with those at Fuente de Piedra (Spain) indicating that on a large spatial scale and on a longer time frame, density-dependent breeding success across Greater Flamingo colonies may induce a shift from an Ideal Despotic Distribution to an Ideal Free Distribution. —Boucheker, A., Nedjah, R., Boulkhssaïm, M., Germain, Ch., Garrido, A., Rendón, M.A., Amat, J.A., Rendón-Martos, M., Prodon, R., Béchet, A. & Samraoui, B. (2024). Tracking changes and shifting homes: Within-season displacement of Greater Flamingos Phoenicopterus roseus between Mediterranean colonies. Ardeola, 71: 43-60. Las variaciones en la calidad del hábitat en el espacio y el tiempo llevan a las aves a rastrear estos cambios para optimizar su estado físico. Investigamos los movimientos entre colonias de los flamencos comunes Phoenicopterus roseus entre colonias de cría del norte del Mediterráneo, establecidas desde hace décadas, y una nueva colonia de cría en el sur del Mediterráneo, en un sitio bastante impredecible (Ezzemoul, Argelia). Entre los flamencos observados como reproductores en Ezzemoul en 2006 y 2009, 59 y 26 individuos anillados, respectivamente, fueron observados antes durante la misma temporada de cría en otra colonia del norte del Mediterráneo y posteriormente en la colonia del sur del Mediterráneo, proporcionando así la primera evidencia de desplazamientos a gran escala dentro de la temporada (> 1.000 km) de una colonia a otra. Sugerimos que el fracaso de la cría y una densidad de nidos mucho mayor en las colonias del norte, establecidas desde hace mucho tiempo, desencadenaron estos movimientos. El éxito reproductivo y la condición corporal de los polluelos en Ezzemoul fueron mayores que en Fuente de Piedra (España), lo que indica que a gran escala espacial y en un marco de tiempo más largo, el éxito de reproducción dependiente de la densidad en las colonias de flamencos comunes puede inducir un cambio de una distribución despótica ideal a una distribución libre ideal.—Boucheker, A., Nedjah, R., Boulkhssaïm, M., Germain, Ch., Garrido, A., Rendón, M.A., Amat, j.A., Rendón-Martos, M., Prodon, R., Béchet, A. y Samraoui, B. (2024). Rastreando cambios y desplazamientos entre sitios de nidificación: Desplazamientos de flamencos comunes Phoenicopterus roseus entre colonias mediterráneas dentro de la temporada de cría. Ardeola, 71: 43-60. [ABSTRACT FROM AUTHOR]

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Copyright of Bulletin de la Societe Zoologique de France is the property of Societe Zoologique de France and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)