Results 21 to 30 of about 16,314 (251)

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

Kelimpahan dan Keanekaragam Tanaman Pakan Rusa Bawean di Kawasan Suaka Margasatwa Pulau Bawean, Jawa Timur

Jurnal Ilmu Kehutanan, 2009
Abundance and Diversity of Bawean Deer Foods in Bawean Wildlife Sanctuary,Bawean Island,East Java Bawean deer (Axis kuhlii) is an endemic species to Bawean.
Subeno Subeno
doaj   +1 more source

Design and Analysis of Line Transect Surveys for Primates [PDF]

International Journal of Primatology, 2010
Line transect surveys are widely used for estimating abundance of primate populations. The method relies on a small number of key assumptions, and if these are not met, substantial bias may occur. For a variety of reasons, primate surveys often do not follow what is generally considered to be best practice, either in survey design or in analysis.
Buckland, Stephen Terrence, Plumptre, A J, Thomas, Len, Rexstad, Eric A   +3 more
openaire   +3 more sources

Use of aerial distance sampling to estimate abundance of tule elk across a gradient of canopy cover and comparison to a concurrent fecal DNA spatial capture-recapture survey

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, Russ H. Landers, Kristin Denryter, Joshua P. Bush   +3 more
doaj   +1 more source

Analysis Condition of Coral Reef Covering in Pramuka Island Waters, Seribu Islands using Line Intercept Transect (LIT) Method

Jurnal Riset Biologi dan Aplikasinya, 2020
The coral reef ecosystem is one of the typical tropical ecosystems with high biodiversity which has an important role both biologically, ecologically, physically as well as socially and economically. Several coral reef areas in Indonesia were reported to
Rega Permana, Nora Akbarsyah, Pringgo KDNY Putra, Aulia Andhikawati   +3 more
doaj   +1 more source

Efficient effort allocation in line‐transect distance sampling of high‐density species: When to walk further, measure less‐often and gain precision

Methods in Ecology and Evolution, 2021
Line‐transect distance sampling is widely used to estimate population densities using distances of observed targets from transect lines to model detectability. When the target taxa are high density, the frequent measuring of distances may make the method
Kathryn Knights, Michael A. McCarthy, James Camac, Gurutzeta Guillera‐Arroita   +3 more
doaj   +1 more source

Determination of Mortality Rates in Pinna nobilis (Linnaeus, 1758) Population in The Çanakkale Strait

Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, 2021
The population of ecologically important Pinna nobilis (Linneaus, 1758), the largest bivalve species of the Mediterranean, has been under serious threat since 2016 as a result of both anthropogenic effects and the epidemic caused by Haplosporidium pinnae.
Ata AKSU
doaj   +1 more source

Improving aquatic warbler population assessments by accounting for imperfect detection.

PLoS ONE, 2014
Monitoring programs designed to assess changes in population size over time need to account for imperfect detection and provide estimates of precision around annual abundance estimates.
Steffen Oppel, Piotr Marczakiewicz, Lars Lachmann, Grzegorz Grzywaczewski   +3 more
doaj   +1 more source

Basin-wide estimates of loggerhead turtle abundance in the Mediterranean Sea derived from line transect surveys

Frontiers in Marine Science, 2022
Loggerhead turtles are a globally vulnerable species of marine turtle. Broad-scale patterns of distribution and abundance can provide regional managers a tool to effectively conserve and manage this species at basin and sub-basin scales.
Andrew DiMatteo, Ana Cañadas, Jason Roberts, Laura Sparks, Simone Panigada, Olivier Boisseau, Anna Moscrop, Caterina Maria Fortuna, Giancarlo Lauriano, Draško Holcer, Draško Holcer, Hélène Peltier, Vincent Ridoux, Juan Antonia Raga, Jesús Tomás, Annette C. Broderick, Brendan J. Godley, Julia Haywood, David March, David March, Robin Snape, Robin Snape, Ricardo Sagarminaga, Sandra Hochscheid   +23 more
doaj   +1 more source

Ultrasound‐Activatable Piezoelectric Hydrogel Reprograms Mitochondrial Epigenetics for Osteoarthritis Therapy via the mTOR/GATD3A Axis

Advanced Science, EarlyView.
An ultrasound‐activatable piezoelectric hydrogel reprograms chondrocyte mitochondrial epigenetics via the mTOR/GATD3A axis, clearing damaged mitochondria and alleviating osteoarthritis progression in both mouse models and human cartilage explants. ABSTRACT The avascular nature of cartilage hinders drug delivery for osteoarthritis (OA) therapy.
Hui Zheng, Pengfei Yan, Peng Liu, Chang Yan, Mengqi Zhao, Zuyong Wang, Chao Ma, Rongkai Zhang, Xi Cui, Swee Hin Teoh   +9 more
wiley   +1 more source