Results 21 to 30 of about 4,209,032 (298)
Accommodating availability bias on line transect surveys using hidden Markov models. [PDF]
, 2009 Previously in the University eprints HAIRST pilot service at http://eprints.st-andrews.ac.uk/archive/00000458/Maximum likelihood methods are developed which accommodate intermittent animal availability of animals on line transect surveys.
Samara, Filipa I. P., Borchers, David L.
core +2 more sources
Biovalentia: Biological Research Journal, 2015 The Diversity of Reptiles on Several Habitat Types in Campus Area of Sriwijaya University Indralaya, Ogan Ilir was aimed to determine the diversity of amphibian species present in this area.
Wenny Saptalisa +2 more
doaj +1 more source
The "Tracked Roaming Transect" and distance sampling methods increase the efficiency of underwater visual censuses. [PDF]
PLoS ONE, 2018 Underwater visual census (UVC) is the most common approach for estimating diversity, abundance and size of reef fishes in shallow and clear waters. Abundance estimation through UVC is particularly problematic in species occurring at low densities and/or ...
Alejo J Irigoyen +5 more
doaj +1 more source
Measurement Errors and Imperfect Detection Rates on the Transect Line in Independent Observer Line Transect Surveys [PDF]
Journal of Data Science, 2021 This paper proposes a parametric method for estimating animal abundance using data from independent observer line transect surveys. This method allows measurement errors in distance and size, and less than 100% detection rates on the transect line. Based on data from southern bluefin tuna surveys and data from a mike whale survey, simulation studies ...
openaire +1 more source
, 2020 In april 2020 heeft Transect b.v. een archeologisch proefsleuvenonderzoek uitgevoerd te Tilburg, Vijfhuizen (gemeente Tilburg; figuur 1). De aanleiding voor het onderzoek is het voornemen om twee woningen te bouwen.
Magdelijns, N. (Transect)
core +1 more source
Global coverage of cetacean line-transect surveys : status quo, data gaps and future challenges [PDF]
, 2012 Knowledge of abundance, trends and distribution of cetacean populations is needed to inform marine conservation efforts, ecosystem models and spatial planning.
Catriona M Harris +21 more
core +2 more sources
Journal of Statistical Software, 2019 Estimating the abundance and spatial distribution of animal and plant populations is essential for conservation and management. We introduce the R package Distance that implements distance sampling methods to estimate abundance. We describe how users can
David L. Miller +4 more
doaj +1 more source
California Fish and Wildlife Journal, 2022 Historically, aerial surveys have been used widely to monitor abundance of large mammals in the western United States. In California, such surveys have typically served as minimum count indices rather than true abundance estimates. Here, we evaluated the
Thomas J. Batter +3 more
doaj +1 more source
Designing a shipboard line transect survey to estimate cetacean abundance off the Azores Archipelago, Portugal [PDF]
, 2009 Revised version November 2008. MRes in Marine Mammal ScienceManagement schemes dedicated to the conservation of wildlife populations rely on the effective monitoring of population size, and this requires the accurate and precise estimation of abundance ...
Faustino, Cláudia Estevinho Santos
core +2 more sources
Journal of Threatened Taxa, 2016 To determine population status of wild animal using reliable sampling techniques forms an important component of conservation effort and effective wildlife management.
Himanshu S. Palei +2 more
doaj +1 more source