Results 71 to 80 of about 24,835,738 (277)

Pattern formation in reaction diffusion models with spatially inhomogeneous diffusion coefficients [PDF]

, 1992
Reaction-diffusion models for biological pattern formation have been studied extensively in a variety of embryonic and ecological contexts. However, despite experimental evidence pointing to the existence of spatial inhomogeneities in various biological ...
Benson, D. L., Maini, P. K., Sherratt, J. A.   +2 more
core   +3 more sources

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

A Framework for Global Twenty-First Century Scenarios and Models of Biological Invasions

BioScience, 2019
Biological invasions have emerged as an eminent feature of global change, with substantial impacts on the environment and human livelihoods. Current research demonstrates that the numbers and impacts of alien species are rising unabatedly.
B. Lenzner, D. Leclère, O. Franklin, H. Seebens, N. Roura‐Pascual, M. Obersteiner, S. Dullinger, F. Essl   +7 more
semanticscholar   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

A Mathematical Framework for Agent Based Models of Complex Biological Networks [PDF]

, 2010
Agent-based modeling and simulation is a useful method to study biological phenomena in a wide range of fields, from molecular biology to ecology. Since there is currently no agreed-upon standard way to specify such models it is not always easy to use ...
A. S. Jarrah, A. Veliz-Cuba, Abdul Salam Jarrah, David Murrugarra, F. Castiglione, Franziska Hinkelmann, G. U. Y. Pe’er, I. Shmulevich, M. Gardner, M. Pogson, R. Laubenbacher, R. Lidl, R. Thomas, Reinhard Laubenbacher, S. Eubank, S. Hardy, V. Grimm, Z. Wang   +17 more
core   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Analysis of parametric biological models with non-linear dynamics

, 2012
In this paper we present recent results on parametric analysis of biological models. The underlying method is based on the algorithms for computing trajectory sets of hybrid systems with polynomial dynamics. The method is then applied to two case studies
Asarin, Batt, Batt, Belta, Berman, Britton, Chen, Clauss, Dang, Dang, Dang, Drulhe, Ezio Bartocci, Fotiou, Garloff, Grosu, H. Prautzsch and W. Boehm, Henzinger, I. Tchoupaeva, J. Garloff, J. Garloff and A.P. Smith, Luca Bortolussi, Prajna, Romain Testylier, S. Boyd and S. Vandenberghe, Sankaranarayanan, Thao Dang, Thao Dang   +27 more
core   +3 more sources

Quantitative analysis of regulatory flexibility under changing environmental conditions [PDF]

, 2010
The circadian clock controls 24-h rhythms in many biological processes, allowing appropriate timing of biological rhythms relative to dawn and dusk. Known clock circuits include multiple, interlocked feedback loops.
Adrian W Thomson, Alexandra Pokhilko, Andrew J Millar, David A Rand, Dunlap JC, Ferenc Nagy, Kieron D Edwards, Kirsten Knox, Laszlo Kozma‐Bognar, Ozgur E Akman, Paul E Brown, Peter J Lumsden, Thomas B   +12 more
core   +4 more sources

Parasites as biological models

Parasitology, 1969
The value of metazoan parasites as models for the investigation of fundamental biological phenomena is discussed. The fields in which they are of particular value include: immunology, neuromuscular physiology, nucleo-cytoplasmic relationships, genetics, cyto-differentiation, comparative biochemistry.After reviewing some examples of experimental ...
openaire   +3 more sources