Results 41 to 50 of about 504,585 (415)

An Economical Custom-Built Drone for Assessing Whale Health

Frontiers in Marine Science, 2017
Drones or Unmanned Aerial Vehicles (UAVs) have huge potential to improve the safety and efficiency of sample collection from wild animals under logistically challenging circumstances.
Vanessa Pirotta, Alastair Smith, Martin Ostrowski, Dylan Russell, Ian D. Jonsen, Alana Grech, Robert Harcourt   +6 more
doaj   +1 more source

Global solvability of a predator-prey model with predator-taxis and prey-taxis [PDF]

arXiv, 2021
This paper is concerned with a diffusive predator-prey model with predator-taxis and prey-taxis. Based on the Schauder fixed point theorem, we prove the global existence, uniqueness and boundedness of the classical solutions under the conditions that the predator-taxis and prey-taxis effects are weak enough.
arxiv  

A sufficient condition on successful invasion by the predator [PDF]

arXiv, 2023
In this paper, we provide a sufficient condition on successful invasion by the predator. Specially, we obtain the persistence of traveling wave solutions of predator-prey system, in which the predator can survive without the predation of the prey. This proof heavily depends on comparison principle of scalar monostable equation, the rescaling method and
arxiv  

Optimising low-Reynolds-number predation via optimal control and reinforcement learning [PDF]

, 2022
We seek the best stroke sequences of a finite-size swimming predator chasing a non-motile point or finite--size prey at low Reynolds number. We use optimal control to seek the globally-optimal solutions for the former and RL for general situations. The predator is represented by a squirmer model that can translate forward and laterally, rotate and ...
arxiv   +1 more source

Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes

Wildlife Society Bulletin, 2019
Coyotes (Canis latrans) are the top predator of livestock in the contiguous United States. Developing more effective nonlethal tools to prevent coyote depredation will facilitate coexistence between livestock producers and coyotes.
Julie K. Young, John Draper, Stewart Breck   +2 more
doaj   +1 more source

Tearing Out the Income Tax by the (Grass)Roots [PDF]

, 2011
Landscapes are increasingly fragmented, and conservation programs have started to look at network approaches for maintaining populations at a larger scale. We present an agent-based model of predator–prey dynamics where the agents (i.e.
A Hastings, A Linhares, AR Ives, B Blasius, B Breckling, B Luttberg, BM Bolker, CC Ioannou, D Urban, DL Benson, DL DeAngelis, DL Urban, E Estrada, E McCauley, E Nonaka, EH Nelson, ES Minor, ES Minor, F Michalski, HN Cominsa, IR Fischhoff, J Terborgh, JA Hilty, Jacopo A. Baggio, JD Rougharden, JD Rougharden, JF McLaughlin, KA Hovel, KA With, Kehinde Salau, KM Cuddington, L da Fontoura Costa, L Fahrig, L Pascual-Hortal, MA Ortega-Huerta, Marco A. Janssen, MD Holland, Michael L. Schoon, P Coppolillo, P Crucitti, P Inchausti, P Kareiva, S Boccaletti, S Creel, SL Lima, V Grimm, V Grimm, VAA Jansen, WG Wilson, WS Cleveland, WS Cleveland, Ö Bodin, Örjan Bodin   +52 more
core   +2 more sources

Selective Predation of a Stalking Predator on Ungulate Prey

PLOS ONE, 2016
Prey selection is a key factor shaping animal populations and evolutionary dynamics. An optimal forager should target prey that offers the highest benefits in terms of energy content at the lowest costs. Predators are therefore expected to select for prey of optimal size. Stalking predators do not pursue their prey long, which may lead to a more random
Benno Woelfing, Luděk Bufka, Elisa Belotti, Jörg Müller, Jörg Müller, Helmut Küchenhoff, Klara Zeis, Marco Heurich   +7 more
openaire   +7 more sources

Predator

Radical Teacher, 2022
Poetry
openaire   +2 more sources

Evaluating fladry designs to improve utility as a nonlethal management tool to reduce livestock depredation

Wildlife Society Bulletin, 2015
Nonlethal deterrents against carnivores are important components to protecting livestock and conserving carnivore populations. However, the performance of the visual deterrent called fladry, a historical tool used to defend livestock from carnivores, is ...
Julie K. Young, Elizabeth Miller, Anna Essex   +2 more
doaj   +1 more source

Prey aggregation is an effective olfactory predator avoidance strategy [PDF]

, 2014
Predator–prey interactions have a major effect on species abundance and diversity, and aggregation is a well-known anti-predator behaviour. For immobile prey, the effectiveness of aggregation depends on two conditions: (a) the inability of the predator ...
Dunn, Alison M., Johannesen, Asa, Morrell, Lesley J.   +2 more
core   +2 more sources