Browsing by Author "Valderrama Ortiz, Sandra Viviana"
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Conservation implications of song divergence between source and translocated populations of the North Island Kōkako
Valderrama Ortiz, Sandra Viviana; Molles, Laura E.; Waas, Joseph R.; Slabbekoorn, Hans (Wiley, 2013)1. Translocation of individuals from healthy source populations to newly colonize or recolonize suitable habitat is a vital tool for the conservation of a species. Demographic, genetic and landscape factors, but also ... -
Dialect formation in fragmented populations of the endangered North Island kokako (Callaeas wilsoni)
Valderrama Ortiz, Sandra Viviana (University of Waikato, 2012)The role of behavioural ecology in the conservation of species and biodiversity remains poorly understood. Observational and experimental studies of bird song, using a biogeographic approach, provide an opportunity to ... -
Does ‘acoustic anchoring’ reduce post-translocation dispersal of North Island robins?
Bradley, David William; Ninnes, Calum Edward; Valderrama Ortiz, Sandra Viviana; Waas, Joseph R. (CSIRO Publishing, 2011)Context: Animal translocations are an important conservation tool; however, post-release dispersal can hinder successful population establishment. Playback of conspecific song attracts dispersing individuals in some species, ... -
Effects of population size on singing behavior of a rare duetting songbird
Valderrama Ortiz, Sandra Viviana; Molles, Laura E.; Waas, Joseph R. (Wiley, 2013)Although the genetic and ecological effects of population declines in endangered species have been well studied, little is known of the social consequences. Changes in signaling behavior may result in disrupted communication ... -
Factors affecting post-release dispersal, mortality, and territory settlement of endangered kokako translocated from two distinct song neighborhoods
Bradley, David William; Molles, Laura E.; Valderrama Ortiz, Sandra Viviana; King, Sarah; Waas, Joseph R. (Elsevier, 2012)Animal translocation success rate is generally low, with the causes of failure poorly understood without comprehensive and protracted monitoring. Here we examine the outcome of a translocation of endangered North Island ...
Co-authors for Sandra Viviana Valderrama Ortiz
Sandra Viviana Valderrama Ortiz has 6 co-authors in Research Commons.