Results 51 to 60 of about 1,581 (171)

Micromechanical modeling of the Compression of the Damaged Zone experiment in the Callovo-Oxfordian formation [PDF]

open access: yesAdvances in Geosciences, 2018
A theoretical model of the Compression of the Damaged Zone experiment is proposed. The tools of micromechanics are used to represent the fractured zone. Assuming an elastic behavior of the sound COx claystone and a simplified geometry of the drift, an
J. Bluthé   +3 more
doaj   +1 more source

Comparative evaluation of noninvasive DNA sampling and line transect surveys for spring density estimation of black grouse and capercaillie

open access: yesWildlife Biology, Volume 2026, Issue 4, July 2026.
Reliable abundance estimates provide essential information in ecology, conservation and management of many wild grouse populations. In this 3‐year study, we comparatively evaluate the suitability of traditional line transect distance sampling of flushed birds versus a spatial capture–recapture survey with noninvasive DNA samples for individual ...
Henrik Brøseth   +2 more
wiley   +1 more source

Social discounting, social costs of carbon, and their use in energy system models

open access: yesEnvironmental Research Letters, 2021
Discounting plays a large role in cost-optimization models, but is nevertheless often only covered in little detail in energy system models. The aim of this paper is to highlight the effects of varying discount rates and social costs of carbon in energy ...
Konstantin Löffler
doaj   +1 more source

Camera trap distance sampling for density estimation of tiger prey in a Sumatran ecosystem restoration concession

open access: yesWildlife Biology, Volume 2026, Issue 4, July 2026.
Estimating prey species densities is critical for implementing effective tiger Panthera tigris recovery strategies. Several statistical models exist for density estimation of unmarked species from camera trap data, all of which rely on the random placement of cameras.
Beno Fariza Syahri   +10 more
wiley   +1 more source

Quantitative targets for leopard conservation in sub‐Saharan Africa

open access: yesJournal of Applied Ecology, Volume 63, Issue 7, July 2026.
By integrating density modelling with habitat suitability, we provide a decision‐support framework for leopard conservation across sub‐Saharan Africa. The results identify where conservation investment is most likely to yield demographic gains, support the re‐evaluation of national hunting quotas against sustainable offtake thresholds and offer an ...
Kalpapran Patowary   +2 more
wiley   +1 more source

Counting Cats: Spatially Explicit Population Estimates of Cheetah (Acinonyx jubatus) Using Unstructured Sampling Data.

open access: yesPLoS ONE, 2016
Many ecological theories and species conservation programmes rely on accurate estimates of population density. Accurate density estimation, especially for species facing rapid declines, requires the application of rigorous field and analytical methods ...
Femke Broekhuis, Arjun M Gopalaswamy
doaj   +1 more source

Long‐term jaguar demography underscores the ecological value of Amazonian floodplains

open access: yesJournal of Applied Ecology, Volume 63, Issue 7, July 2026.
Our results provide the first estimates of recruitment and apparent survival for Amazonian jaguars, key parameters for guiding conservation. We show that seasonal wetlands—the Amazonian floodplain forest and reported estimates from Pantanal and the Llanos—harbour the highest jaguar densities across the species' range.
Raíssa Sepulvida   +8 more
wiley   +1 more source

Density Estimates of Endangered Endemic Rodents Suggest Broader Impacts of Invasive Burmese Pythons Following a Category 4 Hurricane in the Florida Keys

open access: yesBiological Diversity, Volume 3, Issue 2, Page 88-98, June 2026.
Density estimates of two endangered rodent subspecies, endemic to Key Largo, Florida, USA. These findings illustrate the contrasting dynamics of two native species associated with the prevalence of invasive Burmese pythons and global change. The woodrats' decline emphasizes its potential risk of extinction as global change continues to impact island ...
Shauna M. Sayers   +5 more
wiley   +1 more source

Stochastic thermodynamics of self-oscillations: the electron shuttle

open access: yesNew Journal of Physics, 2019
Self-oscillation is a phenomenon studied across many scientific disciplines, including the engineering of efficient heat engines and electric generators.
Christopher W Wächtler   +4 more
doaj   +1 more source

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