Results 51 to 60 of about 6,731,721 (317)

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Kimboza, a Small Lowland Forest With an Outstanding Herpetofauna Diversity in East Africa

Ecology and Evolution
The Eastern Arc Mountains (EAM) and Coastal forests of Tanzania are renowned for harboring large number of threatened and endemic vertebrate species, yet most of these areas have been partially studied. The Kimboza Nature Forest Reserve (KNFR) is a small
John V. Lyakurwa, Simon P. Loader, Wilirk Ngalason, Rikki Gumbs, Caleb Ofori‐Boateng, H. Christoph Liedtke   +5 more
doaj   +1 more source

An Adaptive Management Model for Brown Bears in Hokkaido: Based on Total Population and the Number of Nuisance Bears

Population Ecology, EarlyView.
Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda, Akira Maki, Tsutomu Mano, Hifumi Tsuruga, Hino Takafumi, Shinichi Horino   +5 more
wiley   +1 more source

Kirchhoff equations in generalized Gevrey spaces: local existence, global existence, uniqueness [PDF]

, 2009
In this note we present some recent results for Kirchhoff equations in generalized Gevrey spaces. We show that these spaces are the natural framework where classical results can be unified and extended.
Ghisi, Marina, Gobbino, Massimo
core   +2 more sources

Trauma and ICD-11 PTSD in substance use disorder treatment: a Danish multi-site study

BMC Psychiatry
Background Previous research has indicated high levels of PTSD among people with substance use disorder (SUD). This study expands that work to a Danish SUD population, assessing the prevalence of ICD-11 PTSD diagnoses, sociodemographics, and trauma- and ...
S. Karsberg, L. Najavits, M. U. Pedersen, A. Elklit, M. L. Vang   +4 more
doaj   +1 more source

Existence and Uniqueness of Solutions to Four-Point Impulsive Fractional Differential Equations with p-Laplacian Operator

Mathematics, 2022
In this paper, by using fixed-point theorems, the existence and uniqueness of positive solutions to a class of four-point impulsive fractional differential equations with p-Laplacian operators are studied. In addition, three examples are given to justify
Limin Chu, Weimin Hu, Youhui Su, Yongzhen Yun   +3 more
doaj   +1 more source

Dynamic Existence

, 2017
Everything is in motion. "Inertness" arises from (approximative) repetition, that is, through rotation or an alternation that delineates a focus of consciousness. This focus of consciousness, in turn, must also move/alternate (the two differ only in continuity).
openaire   +10 more sources

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

The Value of Existence [PDF]

, 2017
One does not read Beating Hearts passively. I found myself agreeing often, disagreeing often, and sometimes doing both at the same time. Just as frequently, the book made me reexamine my views from a perspective I had not considered before.
Cassuto, David N.
core   +1 more source

Historical fire regimes in whitebark pine ecosystems of west‐central British Columbia

Ecosphere
Forest ecosystems across western North America are experiencing increasingly large and severe wildfire disturbances. From 2012 to 2024, approximately 600,000 ha of forest in Tweedsmuir Provincial Park, British Columbia's largest protected area, were ...
Kira M. Hoffman, Alana J. Clason, Lori D. Daniels   +2 more
doaj   +1 more source