Results 41 to 50 of about 948,700 (330)

The conservation impact of botanical drones: Documenting and collecting rare plants from vertical cliffs and other hard‐to‐reach areas

Ecological Solutions and Evidence
A high percentage of island floras are at risk of extinction and have been reduced to relic populations, often in remote hard‐to‐reach areas. Uncrewed aircraft systems (UAS aka drones) are now being utilized to assist in the survey and collection of rare
Ben Nyberg, Célia Bairos, Marcela Brimhall, Susan M. Deans, Sholeh Hanser, Scott Heintzman, Ann Hillmann Kitalong, Miguel Menezes de Sequeira, Niro Nobert, Nina Rønsted, Naito Soaladaob, Kenneth R. Wood, Adam M. Williams   +12 more
doaj   +1 more source

Dynamics and numerical simulations of a generalized mosquito-borne epidemic model using the Ornstein-Uhlenbeck process: Stability, stationary distribution, and probability density function

Electronic Research Archive
In this paper, we proposed a generalized mosquito-borne epidemic model with a general nonlinear incidence rate, which was studied from both deterministic and stochastic insights.
Wenhui Niu, Xinhong Zhang, Daqing Jiang
doaj   +1 more source

Microrefugia and species persistence in the Galápagos highlands: A 26,000-year paleoecological perspective.

Frontiers in Genetics, 2013
The Galápagos Islands are known to have experienced significant drought during the Quaternary. The loss of mesophytic upland habitats has been suggested to underlie the relatively lower endemism of upland compared with lowland plant assemblages.
Aaron F Collins, Mark B Bush, Julian P Sachs   +2 more
doaj   +1 more source

The politics of animal extinction and conservation: Interests, framing, and policy

Journal of Political Ecology, 2023
Why do conservation policies fail to prevent species extinctions and die-offs in contravention of stated intentions and goals? Bringing together a range of literature, including political ecology, political theory, conservation science, communication ...
Maria Armoudian
doaj   +2 more sources

The Optical -- Mid-infrared Extinction Law of the l=165 Sightline in the Galactic Plane: Diversity of Extinction Law in the Diffuse Interstellar Medium

, 2017
Understanding the effects of dust extinction is important to properly interpret observations. The optical total-to-selective extinction ratio, Rv = Av/E(B-V), is widely used to describe extinction variations in ultraviolet and optical bands. Since the Rv=
Chen, Xiaodian, de Grijs, Richard, Jiang, Biwei, Wang, Shu, Zhao, He   +4 more
core   +2 more sources

Sustainable Synthesis of Bio‐Based Magnetic and Conductive Wood for Electromagnetic Interference Shielding Applications

Advanced Engineering Materials, EarlyView.
A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya, Majed Amini, Mohammad Arjmand, Earl Johan Foster   +3 more
wiley   +1 more source

Facilitating evolutionary rescue from a wildlife health threat with cross-sectoral strategies: a case study on white-nose syndrome

Ecology and Society
Evolutionary rescue, the ability of a species to evolve under new selective pressures and rebound from threats, occurs within a social-ecological system.
Sarah H Olson, Christina M Davy, Cori L Lausen, Yvonne A Dzal, Jeffrey T Foster, Winifred F. Frick, Nathan W Fuller, Catherine G Haase, C. Reed Hranac, Heidi E Kretser, Susan Lieberman, Colleen McCann, Meredith McClure, Cristina L. Mormorunni, Justina C Ray, Chris Walzer, Craig K.R. Willis, Liam P McGuire   +17 more
doaj   +1 more source

Eyeblink Classical Conditioning and Post Traumatic Stress Disorder – A Model Systems Approach

Frontiers in Psychiatry, 2015
Not everyone exposed to trauma suffers flashbacks, bad dreams, numbing, fear, anxiety, sleeplessness, hyper-vigilance, hyperarousal, or an inability to cope, but those who do may suffer from post traumatic stress disorder (PTSD).
Bernard G Schreurs, Bernard G Schreurs, Lauren B. Burhans, Lauren B. Burhans   +3 more
doaj   +1 more source

Integrating deep-time palaeontology in conservation prioritisation

Frontiers in Ecology and Evolution, 2022
Halting biodiversity loss under growing anthropogenic pressure is arguably the greatest environmental challenge we face. Given that not all species are equally threatened and that resources are always limited, establishing robust prioritisation schemes ...
Catalina Pimiento, Catalina Pimiento, Catalina Pimiento, Alexandre Antonelli, Alexandre Antonelli, Alexandre Antonelli   +5 more
doaj   +1 more source

The fate of the homoctenids (Tentaculitoidea) during the Frasnian-Famennian mass extinction (Late Devonian) [PDF]

, 2006
The homoctenids (Tentaculitoidea) are small, conical-shelled marine animals which are amongst the most abundant and widespread of all Late Devonian fossils.
Alberti GKB, Babin C, Becker RT, Blumenstengel H, Bond DPG, Boueek B, Buggisch W, Dzik J, Farsan NM, Feist R, Fisher DW, Freyer G, Grabau AW, Hajlasz B, Hallam A, Jansen U, Klapper G, Lardeux H, Li YX, Li YX, Ludvigsen R, Lutke F, Lyashenko GP, Lyashenko GP, Lyashenko GP, Lyashenko GP, McLaren DJ, Morrow JR, Over DJ, Racki G, Racki G, Raup DM, Roemer FA, Ruchholz K, Sandberg CA, Sandberg CA, Sauerland U, Schindler E, Scotese CR, Sepkoski JJ, Sherrard K, Truyols-Massoni M, Tunnicliff SP, Walliser OH, Walliser OH, Weedon MJ, Yochelson EL, Zagora K, Zhang R   +48 more
core   +1 more source