by Caroline M. Elliot, Aaron J. Delonay, Kimberly A. Chojnacki, Rober B. Jacobson
Abstract Acipenseriformes (sturgeons and paddlefish) globally have declined throughout their range due to river fragmentation, habitat loss, overfishing, and degradation of water quality. In North America, pallid sturgeon (Scaphirhynchus albus) populations have experienced poor to no recruitment, or substantial levels of hybridization with the closely related shovelnose sturgeon (S. platorynchus).…
by Martínez‐Baroja, L., Pérez‐Camacho, L., Villar‐Salvador, P., Rebollo, S., Quiles, P., Gómez‐Sánchez, D., Molina‐Morales, M., Leverkus, A.B., Castro, J. & Rey‐Benayas, J.M
Abstract Oak regeneration and the expansion of forested sites in Eurasia rely on acorn dispersal by animals, especially the Eurasian jay (Garrulus glandarius). However, in open agroforestry systems where jays are absent, such as old fields far from acorn sources, oak recruitment still occurs. We hypothesize that the Eurasian magpie…
by Moore, J. D., Cooper, T. R., Rau, R., Andersen, D. E., Duguay, J. P., Stewart, C. A., & Krementz, D. G.
Abstract The American woodcock (Scolopax minor; hereafter, woodcock) Singing-Ground Survey (SGS) was developed to inform management decisions by monitoring changes in the relative abundance of woodcock. The timing of the designated survey windows was designed to count resident woodcock while minimizing counting of migrating woodcock. Since the implementation of the…
by Heward, C. J., Lowe, A., Conway, G. J., & Hoodless, A. N
Abstract Counts of displaying male Eurasian woodcock (Scolopax rusticola) form the basis for breeding Eurasian woodcock surveys in many regions across Europe and provide the only practical method of assessing the species’ abundance. This paper investigates the effect that weather may have on the results of these surveys, principally considering…
by Elizondo, E. C., Duguay, J. P., & Collier, B. A.
Abstract Migratory bird species pose serious management challenges because it is difficult to determine habitats utilized during their entire life cycles. As American woodcock populations have experienced long-term declines, wintering habitat management has become increasingly important. Past studies on woodcock have relied predominantly on Very High Frequency (VHF) telemetry, which…
Abstract Carabus hungaricus is an endangered habitat specialist of tall-grass steppe occurring in the Pannonian region. In this study, we used radio telemetry to examine whether habitat type (different habitat patches in steppe mosaic), sex, time of day, temperature and air pressure affect the activity of this species. During the…
by Pastor-Prieto, M., Ramos, R., Zajková, Z., Reyes-González, J. M., Rivas, M. L., Ryan, P. G., & González-Solís, J
Abstract Insights into the year-round movements and behaviour of seabirds are essential to better understand their ecology and to evaluate possible threats at sea. The Atlantic petrel Pterodroma incerta is an Endangered gadfly petrel endemic to the South Atlantic Ocean, with virtually the entire population breeding on Gough Island (Tristan…
Abstract Background: Although many aspects of passerine migration are genetically determined, routing appears to be flexibly adjusted to the conditions experienced on each individual journey. This holds especially true for routing decisions taken when confronted with large bodies of water. Once taken, these decisions can be hardly altered or revised.…
by López-Pérez, A. M., Foley, J., Roy, A., Pesapane, R., Castle, S., Poulsen, A., & Clifford, D. L
Abstract Intensive management may be necessary to protect some highly vulnerable endangered species, particularly those dependent on water availability regimes that might be disrupted by ongoing climate change. The Amargosa vole (Microtus californicus scirpensis) is an increasingly imperiled rodent constrained to rare wetland habitat in the Mojave Desert. In 2014…
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