Results 41 to 50 of about 2,891,099 (365)

Particle Statistics and Population Dynamics

, 2004
We study a master equation system modelling a population dynamics problem in a lattice. The problem is the calculation of the minimum size of a refuge that can protect a population from hostile external conditions, the so called critical patch size ...
Alcaraz, Cardy, Carlos Escudero, Doering, Doi, Escudero, Frensley, Goel, Hernández-García, Ludwig, McClintock, Mobilia, Mobilia, Mobilia, Murray, Oppenheim, Shaffer, Skellam, Sznajd-Weron, Sznajd-Weron   +19 more
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Estimating the functional form for the density dependence from life history data [PDF]

, 2008
Two contrasting approaches to the analysis of population dynamics are currently popular: demographic approaches where the associations between demographic rates and statistics summarizing the population dynamics are identified; and time series approaches
Coulson T., D. Z. Childs, F. Pelletier, G. Tavecchia, J. G. Pilkington, J. M. Pemberton, L. E. B. Kruuk, Luiselli L., M. J. Crawley, N. C. Stenseth, T. Coulson, T. H. Clutton-Brock, T. H. G. Ezard   +12 more
core   +1 more source

Population Dynamics of Myzuspersicae (Sulzer) on Intercropping Potatoes with Other Plants on Karo Highland [PDF]

, 2013
Green peach aphid (MyzuspersicaeSulze) represents one of the major pest affecting decreased production which found in different potato fields in Karo highland. Decreasing incurredin two ways: the direct damages that are caused by the insectfeeding on the
Bakti, D. (Darma), Damanik, B. S. (B), Kuswardani, R. A. (Retna), Sidauruk, L. (Lamria)   +3 more
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Stochastic gain in population dynamics

, 2004
We introduce an extension of the usual replicator dynamics to adaptive learning rates. We show that a population with a dynamic learning rate can gain an increased average payoff in transient phases and can also exploit external noise, leading the system
A. Cabrales, Arne Traulsen, C. A. Holt, C. T. Bergstrom, C. W. Gardiner, D. Foster, D. Fudenberg, H. Gintis, H. G. Schuster, Heinz Georg Schuster, J. Hofbauer, J. Hofbauer, J. M. Smith, J. v. Neumann, J. W. Weibull, M. A. Nowak, M. A. Nowak, P. Schuster, R. Axelrod, Torsten Röhl, Y. Sato   +20 more
core   +1 more source

Predators reduce extinction risk in noisy metapopulations [PDF]

, 2010
Background Spatial structure across fragmented landscapes can enhance regional population persistence by promoting local “rescue effects.” In small, vulnerable populations, where chance or random events between individuals may have disproportionately ...
A Liebhold, CB Huffaker, DJD Earn, E Ranta, F Courchamp, HB Wilson, HN Comins, HN Comins, HN Comins, I Hanski, I Hanski, James C. Bull, JC Bull, JC Bull, JC Bull, Jerome Chave, JH Brown, KP Burnham, M Holyoak, M Rosenzweig, MB Bonsall, MB Bonsall, Michael B. Bonsall, ON Bjørnstad, P Amarasekare, P Legendre, PJ Hudson, R Levins, RD Holt, RD Holt, RM May, S Dey, S-R Zhou, T Royama, T Vogwill, TG Benton, WC Allee, WSC Gurney   +37 more
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Evaluating the origin and spread of spotted lanternfly (Lycorma delicatula) in Japan

Population Ecology, EarlyView.
The invasive spotted lanternfly (Lycorma delicatula) is native to China and is a serious economic pest in the Republic of Korea and the United States, though it is not considered a pest in Japan. We established a distribution map of L. delicatula in Japan through a comprehensive review of published literature and citizen science reports and analyzed ...
Matthew T. Kamiyama, Michihiko Takahashi, Hannah J. Broadley, Francesc Gómez‐Marco, Mark S. Hoddle, Kenji Matsuura   +5 more
wiley   +1 more source

Nonlinear Relaxation in Population Dynamics

, 2001
We analyze the nonlinear relaxation of a complex ecosystem composed of many interacting species. The ecological system is described by generalized Lotka-Volterra equations with a multiplicative noise. The transient dynamics is studied in the framework of
Cirone, M. A., de Pasquale, F., Spagnolo, B.   +2 more
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Comparison of kinship‐identification methods for robust stock assessment using close‐kin mark–recapture data for Pacific bluefin tuna

Population Ecology, EarlyView.
In this study, we compared three methods for kinship identification using different algorithms in samples of wild Pacific bluefin tuna and generated genotyping data. The three methods resulted in different numbers of inferred kinship pairs for both generated and actual data. Particularly for the half‐sibling pairs, considerable number of false‐positive
Yohei Tsukahara, Reiichiro Nakamichi, Aiko Matsuura, Tetsuya Akita, Atushi Fujiwara, Nobuaki Suzuki   +5 more
wiley   +1 more source

The impact of COVID-19 on life expectancy across socioeconomic groups in Denmark

Population Health Metrics
Background Denmark was one of the few countries that experienced an increase in life expectancy in 2020, and one of the few to see a decrease in 2021. Because COVID-19 mortality is associated with socioeconomic status (SES), we hypothesize that certain ...
Cosmo Strozza, Serena Vigezzi, Julia Callaway, José Manuel Aburto   +3 more
doaj   +1 more source

Population dynamics of Windermere perch [PDF]

, 1982
This paper looks briefly at some of the more recent analyses and interpretations of the changes that have occurred in the population dynamics of Windermere perch and at the present level of understanding.
Craig, J.F.
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