Results 51 to 60 of about 123,013 (299)

Beyond Pixel-Wise Unmixing: Spatial–Spectral Attention Fully Convolutional Networks for Abundance Estimation

Remote Sensing, 2023
Spectral unmixing poses a significant challenge within hyperspectral image processing, traditionally addressed by supervised convolutional neural network (CNN)-based approaches employing patch-to-pixel (pixel-wise) methods.
Jiaxiang Huang, Puzhao Zhang
doaj   +1 more source

Estimating the Abundance of Widely Distributed Primates

American Journal of Primatology
ABSTRACT Monitoring the abundance of widely distributed animals poses many logistic challenges, and is rarely done because the wide distribution generally suggests a lack of conservation concern and thus funding. However, as there are increasing concerns about the conservation status of some widely distributed primates, evidence based
Ray Hilborn, Milani Chaloupka
openaire   +4 more sources

Testing methods for using high‐resolution satellite imagery to monitor polar bear abundance and distribution

Wildlife Society Bulletin, 2015
High‐resolution satellite imagery is a promising tool for providing coarse information about polar species abundance and distribution, but current applications are limited.
Michelle A. LaRue, Seth Stapleton, Claire Porter, Stephen Atkinson, Todd Atwood, Markus Dyck, Nicolas Lecomte   +6 more
doaj   +1 more source

Utility of Particle Swarm Optimization in Statistical Population Reconstruction

Mathematics, 2023
Statistical population reconstruction models based on maximum likelihood and minimum chi-square objective functions provide a robust and versatile approach to estimating the demographic dynamics of harvested populations of wildlife.
Sergey S. Berg
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

The Role of Carrion Supply in the Abundance of Deep-Water Fish off California [PDF]

, 2012
Few time series of deep-sea systems exist from which the factors affecting abyssal fish populations can be evaluated. Previous analysis showed an increase in grenadier abundance, in the eastern North Pacific, which lagged epibenthic megafaunal abundance,
Bailey, David M., Drazen, J.C., Bailey, D.M., Drazen, Jeffrey C., Ruhl, Henry A., Henry A Ruhl, Smith Kenneth L., Ruhl, H.A., Bailey David M., David M Bailey, Drazen Jeffrey C., Smith, K.L., Kenneth L Smith, Ruhl Henry A., Smith, Kenneth L., Jeffrey C Drazen   +15 more
core   +1 more source

Assessing the Abundance of Caucasian Salamander, Mertensiella caucasica (Caudata, Salamandridae), with N-mixture Model in Northeastern Anatolia

Zoodiversity, 2023
The endangered Caucasian salamander, Mertensiella caucasica (Waga, 1876), is endemic to the western Lesser Caucasus. Here, we used N-mixed models to analyse repeated count data of Caucasian salamanders from the eastern Black Sea region of Turkey.
B. Y. Yakın, D. Arslan, K. Çiçek, C. V. Tok   +3 more
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Distribution, abundance, and feeding ecology of baleen whales in Icelandic waters: have recent environmental changes had an effect?

, 2015
Date of Acceptance: 13/01/2015The location of Iceland at the junction of submarine ridges in the North-East Atlantic where warm and cold water masses meet south of the Arctic Circle contributes to high productivity of the waters around the island. During
Bjarni Mikkelsen, Anna Schleimer, Nils eÖien, Bjarki Þór Elvarsson, Philip S. Hammond, Thorvaldur eGunnlaugsson, Vikingsson, Gisli A, Schleimer, Anna, Silva, Teresa, Bjarni eMikkelsen, Øien, Nils, Anna eSchleimer, Pike, Daniel G, Héðinn Valdimarsson, Philip eHammond, Gísli A. Víkingsson, Genevieve eDesportes, Teresa Silva, Héðinn eValdimarsson, Mikkelsen, Bjarni, Desportes, Geneviève, Teresa eSilva, Valur Bogason, Bjarki Þ. Elvarsson, Nils Øien, Gunnlaugsson, Thorvaldur, Gísli Arnór Víkingsson, Daniel G. Pike, Valdimarsson, Héðinn, Hammond, Philip Steven, Elvarsson, Bjarki Þ, Bogason, Valur, Valur eBogason, Thorvaldur Gunnlaugsson, Geneviève Desportes   +34 more
core   +1 more source

Abundance Estimation Using Minimum Order Set Distances in Line Transect Sampling

Stats
Line transect sampling is widely used for estimating population abundance, but existing nonparametric estimators of detection density at the transect line often suffer from boundary bias and tuning sensitivity. In this paper, we propose two simple tuning-
Mohammad Ali Al Kadiri, Mariam H. Al-Husari   +1 more
doaj   +1 more source