3 documents found, page 1 of 1
From species detection to population size indexing: The use of sign surveys for...
Peralta, Dinora; Vaz Freire, Teresa; Ferreira, Clara; Mendes, Tiago; Mira, António; Santos, Sara; Alves, Paulo Célio; Lambim, Xavier; Beja, PedroMonitoring the occupancy and abundance of wildlife populations is key to evaluate their conservation status and trends. However, estimating these parameters often involves time and resource-intensive techniques, which are logistically challeng- ing or even unfeasible for rare and elusive species that occur patchily and in small numbers. Hence, surveys based on field identification of signs (e.g. faeces, footpri...
From species detection to population size indexing: the use of sign surveys for...
Peralta, Dinora; Vaz‑Freire, Teresa; Ferreira, Clara; Mendes, Tiago; Mira, António; Santos, Sara; Alves, Paulo C.; Lambin, Xavier; Beja, PedroMonitoring the occupancy and abundance of wildlife populations is key to evaluate their conservation status and trends. However, estimating these parameters often involves time and resource-intensive techniques, which are logistically challeng- ing or even unfeasible for rare and elusive species that occur patchily and in small numbers. Hence, surveys based on field identification of signs (e.g. faeces, footpri...
Factors affecting southern water vole (Arvicola sapidus) detection and occupanc...
Peralta, Dinora; Leitão, Inês; Ferreira, António; Mira, António; Beja, Pedro; Pita, RicardoFailure to detect a species at sites where it is present (i.e. imperfect detection) is known to occur frequently, but this is often disregarded in monitoring programs and metapopulation studies. Here we modelled for the first time the probability of patch occupancy by a threatened small mammal, the southern water vole (Arvicola sapidus, while accounting for the probability of detection given occupancy. Based on...