Results 51 to 60 of about 1,347,426 (185)

Spatially prioritizing mitigation for amphibian roadkills based on fatality estimation and landscape conversion

Frontiers in Ecology and Evolution, 2023
Roads cause biodiversity loss and the effects of wildlife-vehicle collisions may ripple from individuals and populations to ecosystem functioning. Amphibians are threatened worldwide and, despite being particularly prone to roadkill impacts, they are ...
Larissa Oliveira Gonçalves, Larissa Oliveira Gonçalves, Larissa Oliveira Gonçalves, Ismael Verrastro Brack, Ismael Verrastro Brack, Caroline Zank, Caroline Zank, Júlia Beduschi, Júlia Beduschi, Andreas Kindel, Andreas Kindel   +10 more
doaj   +1 more source

Hierarchical pinning models, quadratic maps and quenched disorder

, 2009
We consider a hierarchical model of polymer pinning in presence of quenched disorder, introduced by B. Derrida, V. Hakim and J. Vannimenius in 1992, which can be re-interpreted as an infinite dimensional dynamical system with random initial condition ...
A.F. Beardon, A.N. Berker, B. Derrida, B. Derrida, B. Derrida, C. Monthus, F.L. Toninelli, F.L. Toninelli, Fabio Lucio Toninelli, G. Forgacs, G. Giacomin, G. Giacomin, G. Giacomin, G. Giacomin, Giambattista Giacomin, Hubert Lacoin, K.S. Alexander, M.E. Fisher, O. Costin, P. Collet, P. Collet   +20 more
core   +1 more source

Linking behavioral ecology and population monitoring: The importance of group size for spatial population models

Ecosphere
Modeling the spatial distribution of wildlife abundance is paramount for management. In group‐forming species, group size and occurrence may be governed by different ecological processes.
Zackary J. Delisle, Joshua H. Schmidt, Eric J. Wald, Kyle A. Cutting, Mathew S. Sorum, Buck Mangipane, Kyle Joly, Raime B. Fronstin, Matthew D. Cameron, Bridget L. Borg   +9 more
doaj   +1 more source

Phase Diagrams and Crossover in Spatially Anisotropic d=3 Ising, XY Magnetic and Percolation Systems: Exact Renormalization-Group Solutions of Hierarchical Models

, 2007
Hierarchical lattices that constitute spatially anisotropic systems are introduced. These lattices provide exact solutions for hierarchical models and, simultaneously, approximate solutions for uniaxially or fully anisotropic d=3 physical models.
A. A. Migdal, A. A. Migdal, A. Nihat Berker, Aslı Tuncer, Aykut Erbaş, Burcu Yücesoy, J. Villain, J. W. Essam, M. Kaufman   +8 more
core   +1 more source

Key Habitat and Predatory Influences on the Community- and Species-Level Population Dynamics of Spring-Breeding Amphibian Larvae Within a Remnant Tupelo-Cypress Wetland

Hydrobiology
Understanding the factors influencing amphibian populations is essential for effective freshwater conservation, particularly for species with biphasic life histories.
Jacob M. Hutton, Robin W. Warne
doaj   +1 more source

A class of admissible estimators of multiple regression coefficient with an unknown variance

Statistical Theory and Related Fields, 2020
Suppose that we observe ${\boldsymbol y} \mid {\boldsymbol \theta },\ \tau \sim N_p({\boldsymbol X}{\boldsymbol \theta },\tau ^{-1}{\boldsymbol I}_p) $, where ${\boldsymbol \theta } $ is an unknown vector with unknown precision τ.
Chengyuan Song, Dongchu Sun
doaj   +1 more source

Large positive ecological changes of small urban greening actions

Ecological Solutions and Evidence, 2023
The detrimental effects of environmental change on human and non‐human diversity are acutely manifested in urban environments. While urban greenspaces are known to mitigate these effects and support functionally diverse ecological communities, evidence ...
Luis Mata, Amy K. Hahs, Estibaliz Palma, Anna Backstrom, Nikolas Johnston, Tyler King, Ashley R. Olson, Christina Renowden, Tessa R. Smith, Blythe Vogel, Samantha Ward   +10 more
doaj   +1 more source

Articulated Pose Estimation Using Hierarchical Exemplar-Based Models

, 2015
Exemplar-based models have achieved great success on localizing the parts of semi-rigid objects. However, their efficacy on highly articulated objects such as humans is yet to be explored.
Allen, Peter, Belhumeur, Peter, Li, Yinxiao, Liu, Jiongxin   +3 more
core   +1 more source

A New Zero-Inflated Negative Binomial Multilevel Model for Forecasting the Demand of Disaster Relief Supplies in the State of Sao Paulo, Brazil

Mathematics, 2022
This article presents the results of the implementation of a forecasting model, to predict the relief materials needed for assisting in decisions prior to natural disasters, thus filling a gap in the exploration of Generalized Linear Mixed Models (GLMM ...
Camila Pareja Yale, Hugo Tsugunobu Yoshida Yoshizaki, Luiz Paulo Fávero   +2 more
doaj   +1 more source

Bringing circuit theory into spatial occupancy models to assess landscape connectivity

Methods in Ecology and Evolution
Occupancy models were originally developed to better understand species distribution while accounting for imperfect detection. Because species distribution is not only shaped by habitat quality but also by the ability of individuals to reach suitable ...
Maëlis Kervellec, Thibaut Couturier, Sarah Bauduin, Delphine Chenesseau, Pierre Defos du Rau, Nolwenn Drouet‐Hoguet, Christophe Duchamp, Julien Steinmetz, Jean‐Michel Vandel, Olivier Gimenez   +9 more
doaj   +1 more source