Towed-float GPS telemetry: a tool to assess movement patterns and habitat use of juvenile stingrays

2020 ◽  
Vol 71 (1) ◽  
pp. 89 ◽  
Author(s):  
A. P. B. Martins ◽  
M. R. Heupel ◽  
A. Oakley-Cogan ◽  
A. Chin ◽  
C. A. Simpfendorfer
Keyword(s):  
Habitat Use ◽  
Spatial Data ◽  
Animal Movement ◽  
Movement Patterns ◽  
High Accuracy ◽  
Benthic Organisms ◽  
Location Error ◽  
Gps Telemetry ◽  
Disc Width

GPS telemetry provides high-accuracy spatial data on animal movement; however, it has rarely been used with benthic organisms, such as stingrays, because of their irregular surfacing behaviour or bottom-dwelling habits. This study evaluated the use of towed-float GPS tags to assess movements of juvenile stingrays, with active tracking performed simultaneously for comparison. Four juvenile Urogymnus granulatus individuals (2 females and 2 males; average 32.2-cm disc width) were tracked in April 2016. Individuals travelled 1332.15±269.58m south-east across Pioneer Bay at an average speed of 6.87mmin–1 in 3.7h. Stationary tests demonstrated that the quality of the data obtained by towed-float GPS tags could not be matched by active, acoustic or ARGOS telemetry, reaching, on average, 99% of successful fixes and <15-m accuracy. Location error varied significantly based on the number of satellites detected, with error decreasing as the satellite number increased. This study demonstrated the potential of towed-float GPS telemetry for high-resolution assessment of movement patterns and habitat use of juvenile stingrays in shallow coastal water. If well applied, this technique can increase our knowledge of juvenile stingray ecology and their essential habitats.

Fine- and coarse-scale movements and habitat use by Wood Turtles (Glyptemys insculpta) based on probabilistic modeling of radiotelemetry and GPS-telemetry data

2018 ◽  
Vol 96 (10) ◽  
pp. 1153-1164 ◽  
Author(s):  
D.G. Thompson ◽  
T. Swystun ◽  
J. Cross ◽  
R. Cross ◽  
D. Chartrand ◽  
...  
Keyword(s):  
Habitat Use ◽  
Explicit Knowledge ◽  
Animal Movement ◽  
Low Frequency ◽  
Telemetry Data ◽  
Gps Telemetry ◽  
Data Set ◽  
Glyptemys Insculpta ◽  
Study Results ◽  
Wood Turtles

Understanding animal movement and habitat use is critical for the delineation of habitat requiring protection for species at risk. Defining critical habitat requires studies with observations at a fine enough scale to reflect how animals use and move among habitats and include enough individuals to generalize findings to the population. We present results of a multiyear study on 48 adult Wood Turtles (Glyptemys insculpta (Le Conte, 1830)) from two different populations monitored with low-frequency radiotelemetry and high-frequency GPS telemetry. Results demonstrated the propensity for conventional radiotelemetry to underestimate cumulative distances moved and overestimate the amount of habitat used by Wood Turtles. Together the two data sets demonstrate the propensity for Wood Turtles to remain in close proximity to the river and that some differences in habitat use occur between the sexes; males tended to move parallel to the river, whereas females moved perpendicular to the river. The GPS-telemetry data provided a robust spatiotemporal data set that provided a better understanding of frequently used habitat types and features. Overall, study results suggest that currently delineated areas of protected habitat are likely to be effective in conserving these two populations and provides significantly improved, spatially explicit knowledge that can be used to inform further mitigation efforts if necessary.

TINGKAT KEAKURATAN DAN KEBERTERIMAAN TERJEMAHAN KALIMAT YANG MENGAKOMODASI TINDAK TUTUR KOMISIF PADA NOVEL INSURGENT (THE ACCURACY AND ACCEPTABILITY OF TRANSLATION ON THE SENTENCES WHICH ACCOMODATE COMMISSIVE SPEECH ACT IN THE INSURGENT NOVEL)

Widyaparwa ◽  
2017 ◽  
Vol 45 (2) ◽  
pp. 151-164
Author(s):  
Novita Sumarlin Putri
Keyword(s):  
Focus Group ◽  
Focus Group Discussion ◽  
Speech Act ◽  
Group Discussion ◽  
Document Analysis ◽  
High Accuracy ◽  
Pragmatic Approach ◽  
Componential Analysis ◽  
Pragmatic Aspects

Tindak tutur komisif merupakan salah satu aspek pragmatik yang harus diperhatikan oleh penerjemah ketika menerjemahkan teks. Hal itu dilakukan agar menghasilkan terjemahan yang berkualitas dari aspek keakuratan dan keberterimaan. Berdasarkan alasan tersebut, penelitian ini bertujuan mendiskripsikan tingkat keakuratan dan keberterimaan terjemahan kalimat yang mengakomodasi tindak tutur komisif dengan pendekatan pragmatik. Data yang digunakan ialah tuturan komisif dan hasil penilaian kualitas terjemahan. Data bersumber dari novel Insurgent karya Veronica Roth dan informan. Data dikumpulkan dengan cara analisis dokumen, kuesioner dan Focus Group Discussion. Selanjutnya, data dianalisis dengan cara analisis domain, taksonomi, komponensial, dan tema budaya. Hasil penelitian ini menunjukkan bahwa terjemahan dalam novel Insurgent mempunyai nilai keakuratan dan keberterimaan yang cukup tinggi. Berdasarkan penelitian ini, dapat disimpulkan bahwa tingkat keakuratan dan keberterimaan pada setiap jenis tindak tutur komisif memiliki dampak terhadap kualitas keseluruhan terjemahan kalimat yang mengandung tindak tutur komisif.Commissive speech act is one of the pragmatic aspects to regard by the translator in translating the text. It aims to produce a qualified translation in regarding accuracy and acceptability aspects. According to the aspects, this research aims to describe accuracy and acceptability of translation in sentences which accommodate commissive speech act using pragmatic approach. The data used is commissive speech and qualitative translation value result. The sources of the data are an Insurgent novel by Veronica Roth and informants. The data were collected through document analysis, questionnaire, and Focus Group Discussion then analyzed the domain, taxonomic, componential analysis, and cultural theme. The result shows that translation in the Insurgent novel has high accuracy and acceptability values. This research concludes that the accuracy and acceptability level in each commissive speech act has an impact on quality of whole translated sentences which contain commissive speech act.

Valuation mapping of hazards of the crisis natural and economic situations

2017 ◽  
Vol 929 (11) ◽  
pp. 40-49
Author(s):  
N.E. Krasnoshtanova ◽  
A.K. Cherkashin
Keyword(s):  
Spatial Data ◽  
Heterogeneous Information ◽  
Secondary Use ◽  
Raster Maps ◽  
Irkutsk Region ◽  
Homogeneous Network ◽  
Surrounding Areas ◽  
Integral Assessment ◽  
Multidimensional Statistics

An innovative technique for the secondary use of cartographic information for creating assessment hazard maps of crisis natural and economic situations and an integral assessment of the sustainability economic development and the quality of live is presented. Valuation mapping was carried for the Slyudyansky district of the Irkutsk region. A database has been created for homogeneous network of plots, which contains heterogeneous information about the nature and socio-economic environment of the district. Spatial data were processed using multidimensional statistics on the base of reliability theory models. An account of the environmental correction for each plots is an important aspect of the proposed technique of assessing and creating through maps. This makes it possible to reduce the evaluation function to an invariant form common to all locations and it is used in through way to create assessment maps for natural and socio-economic objects. As a result, a series of raster maps of through thematic content was made. The map of integral hazard of emergence of economic crisis situation displays the lowest hazard values for the territories of settlements and their surrounding areas, as well as areas along roads and railways. Additionally it allocates undeveloped valley of taiga rivers, advanced for economic use, primarily for recreational purposes.

scholarly journals Fencing affects African wild dog movement patterns and population dynamics

Oryx ◽  
2021 ◽  
pp. 1-9
Author(s):  
Helen M. K. O'Neill ◽  
Sarah M. Durant ◽  
Stefanie Strebel ◽  
Rosie Woodroffe
Keyword(s):  
Population Dynamics ◽  
Large Scale ◽  
Animal Movement ◽  
Landscape Connectivity ◽  
Ecological Impact ◽  
Movement Patterns ◽  
Wrong Side ◽  
African Wild Dog ◽  
Wild Dog ◽  
Wild Dogs

Abstract Wildlife fences are often considered an important tool in conservation. Fences are used in attempts to prevent human–wildlife conflict and reduce poaching, despite known negative impacts on landscape connectivity and animal movement patterns. Such impacts are likely to be particularly important for wide-ranging species, such as the African wild dog Lycaon pictus, which requires large areas of continuous habitat to fulfil its resource requirements. Laikipia County in northern Kenya is an important area for wild dogs but new wildlife fences are increasingly being built in this ecosystem. Using a long-term dataset from the area's free-ranging wild dog population, we evaluated the effect of wildlife fence structure on the ability of wild dogs to cross them. The extent to which fences impeded wild dog movement differed between fence designs, although individuals crossed fences of all types. Purpose-built fence gaps increased passage through relatively impermeable fences. Nevertheless, low fence permeability can lead to packs, or parts of packs, becoming trapped on the wrong side of a fence, with consequences for population dynamics. Careful evaluation should be given to the necessity of erecting fences; ecological impact assessments should incorporate evaluation of impacts on animal movement patterns and should be undertaken for all large-scale fencing interventions. Where fencing is unavoidable, projects should use the most permeable fencing structures possible, both in the design of the fence and including as many purpose-built gaps as possible, to minimize impacts on wide-ranging wildlife.

scholarly journals Cryo-EM model validation recommendations based on outcomes of the 2019 EMDataResource challenge

2021 ◽  
Vol 18 (2) ◽  
pp. 156-164 ◽  
Author(s):  
Catherine L. Lawson ◽  
Andriy Kryshtafovych ◽  
Paul D. Adams ◽  
Pavel V. Afonine ◽  
Matthew L. Baker ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Structure Data ◽  
Model Evaluation ◽  
Data Bank ◽  
High Accuracy ◽  
Atomic Resolution ◽  
Software Developers ◽  
Data Archives ◽  
Modeling Software

AbstractThis paper describes outcomes of the 2019 Cryo-EM Model Challenge. The goals were to (1) assess the quality of models that can be produced from cryogenic electron microscopy (cryo-EM) maps using current modeling software, (2) evaluate reproducibility of modeling results from different software developers and users and (3) compare performance of current metrics used for model evaluation, particularly Fit-to-Map metrics, with focus on near-atomic resolution. Our findings demonstrate the relatively high accuracy and reproducibility of cryo-EM models derived by 13 participating teams from four benchmark maps, including three forming a resolution series (1.8 to 3.1 Å). The results permit specific recommendations to be made about validating near-atomic cryo-EM structures both in the context of individual experiments and structure data archives such as the Protein Data Bank. We recommend the adoption of multiple scoring parameters to provide full and objective annotation and assessment of the model, reflective of the observed cryo-EM map density.

scholarly journals Leveraging Road Characteristics and Contributor Behaviour for Assessing Road Type Quality in OSM

2021 ◽  
Vol 10 (7) ◽  
pp. 436
Author(s):  
Amerah Alghanim ◽  
Musfira Jilani ◽  
Michela Bertolotto ◽  
Gavin McArdle
Keyword(s):  
Machine Learning ◽  
Spatial Data ◽  
Classification Accuracy ◽  
Supervised Machine Learning ◽  
Machine Learning Techniques ◽  
Data Set ◽  
Semantic Inference ◽  
Road Type ◽  
The Impact

Volunteered Geographic Information (VGI) is often collected by non-expert users. This raises concerns about the quality and veracity of such data. There has been much effort to understand and quantify the quality of VGI. Extrinsic measures which compare VGI to authoritative data sources such as National Mapping Agencies are common but the cost and slow update frequency of such data hinder the task. On the other hand, intrinsic measures which compare the data to heuristics or models built from the VGI data are becoming increasingly popular. Supervised machine learning techniques are particularly suitable for intrinsic measures of quality where they can infer and predict the properties of spatial data. In this article we are interested in assessing the quality of semantic information, such as the road type, associated with data in OpenStreetMap (OSM). We have developed a machine learning approach which utilises new intrinsic input features collected from the VGI dataset. Specifically, using our proposed novel approach we obtained an average classification accuracy of 84.12%. This result outperforms existing techniques on the same semantic inference task. The trustworthiness of the data used for developing and training machine learning models is important. To address this issue we have also developed a new measure for this using direct and indirect characteristics of OSM data such as its edit history along with an assessment of the users who contributed the data. An evaluation of the impact of data determined to be trustworthy within the machine learning model shows that the trusted data collected with the new approach improves the prediction accuracy of our machine learning technique. Specifically, our results demonstrate that the classification accuracy of our developed model is 87.75% when applied to a trusted dataset and 57.98% when applied to an untrusted dataset. Consequently, such results can be used to assess the quality of OSM and suggest improvements to the data set.

Ten ways to improve the quality of descriptions of whole-animal movement

2010 ◽  
Vol 34 (8) ◽  
pp. 1351-1365 ◽  
Author(s):  
Yoav Benjamini ◽  
Dina Lipkind ◽  
Guy Horev ◽  
Ehud Fonio ◽  
Neri Kafkafi ◽  
...  
Keyword(s):  
Animal Movement

Acoustic tracking of fin whales: Habitat use and movement patterns within a Canadian Pacific fjord system

2021 ◽  
Vol 149 (6) ◽  
pp. 4264-4280
Author(s):  
Benjamin Hendricks ◽  
Eric M. Keen ◽  
Chenoah Shine ◽  
Janie L. Wray ◽  
Hussein M. Alidina ◽  
...  
Keyword(s):  
Habitat Use ◽  
Movement Patterns ◽  
Acoustic Tracking ◽  
Fjord System ◽  
Fin Whales

Habitat use and movement patterns in the graceful crag lizard,Pseudocordylus capensis

2007 ◽  
Vol 42 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Douglas A. Eifler ◽  
Maria A. Eifler ◽  
Erin N. Eifler
Keyword(s):  
Habitat Use ◽  
Movement Patterns
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