Zobrazeno 1 - 10
of 117
pro vyhledávání: '"William, Gurney"'
Publikováno v:
Individual-Based Models and Approaches in Ecology ISBN: 9781351073462
A dilemma in ecology is posed by the contrast between simple strategic models, which offer generality but are exceedingly difficult to test against the performance of particular real systems, and complex tactical models, which aim to account for and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::529ce8f57714b659066810d504be095b
https://doi.org/10.1201/9781351073462-3
https://doi.org/10.1201/9781351073462-3
Autor:
P. J. Bacon, Ken Whelan, William Gurney, Louise O. Brennan, Martin O'Grady, Eileen Dillane, Philip McGinnity
Publikováno v:
Transactions of the American Fisheries Society. 143:573-585
Fishery managers need robust ways of objectively estimating the quantitative composition of fish stocks, by species and age-class, from representative samples of populations. Dual-frequency identification sonar data were used to first visually identi
Autor:
Olle, Tenow, Nilssen, Arne C., Helena, Bylund, Rickard, Pettersson, Battisti, Andrea, Udo, Bohn, Fabien, Caroulle, Constantin, Ciornei, György, Csóka, Horst, Delb, Willy De Prins, Milka, Glavendekić, Gninenko, Yuri I., Boris, Hrašovec, Dinka, Matošević, Valentyna, Meshkova, Leen, Moraal, Constantin, Netoiu, Juan, Pajares, Vasily, Rubtsov, Romica, Tomescu, Irina, Utkina, William, Gurney
Publikováno v:
Journal of Animal Ecology
Journal of Animal Ecology 82 (2013) 1
Journal of Animal Ecology, 82(1), 84-95
Journal of Animal Ecology 82 (2013) 1
Journal of Animal Ecology, 82(1), 84-95
1.We show that the population ecology of the 9- to 10-year cyclic, broadleaf-defoliating winter moth (Operophtera brumata) and other early-season geometrids cannot be fully understood on a local scale unless population behaviour is known on a Europea
Autor:
William Gurney, Edward McCauley, William A. Nelson, Roger M. Nisbet, Bharath Ananthasubramaniam
Publikováno v:
Ecology. 92:362-372
Deterministic, size-structured models are widely used to describe consumer-resource interactions. Such models typically ignore potentially large random variability in juvenile development rates. We present simple representations of this variability a
Publikováno v:
Fisheries Research. 106:474-494
In this paper we present a general modelling approach for coupled length-structured fish populations. The model includes a target set of fish species which are modelled with full length structure from egg to adult, together with a highly simplified s
Autor:
William Gurney, Julian C. MacLean, B. D. M. Whyte, Eddie McKenzie, P. J. Bacon, Ronald Campbell, Robert Laughton, Gordon W. Smith
Publikováno v:
ICES Journal of Marine Science. 68:130-143
Bacon, P. J., Gurney, W. S. C., McKenzie, E., Whyte, B., Campbell, R., Laughton, R., Smith, G., and MacLean, J. 2011. Objective determination of the sea age of Atlantic salmon from the sizes and dates of capture of individual fish. – ICES Journal o
Autor:
William Gurney, Gordon SmithG. Smith, Julian McleanJ. Mclean, Alan F. YoungsonA.F. Youngson, Eddie McKenzie, P. J. Bacon, Philip McGinnity
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 67:1040-1055
This paper reports an investigation of stock–recruitment relations for Atlantic salmon ( Salmo salar ). We regard these relations as stochastic functions characterized by an expected stock–recruitment relation and deviations from this expectation
Autor:
Katharine F. Preedy, William Gurney, Eddie McKenzie, Philip A. Kunzlik, Douglas C. Speirs, Traiani Stari, Michael R. Heath
Publikováno v:
Fisheries Research. 105:2-12
Age at length keys (ALKs), which give the probability of age given length, are a fundamental component of many age-based fish stock assessment methods. Usually, ALKs are compiled from readings of otoliths or scales taken from length-stratified sub-sa
Autor:
B. A. de Cuevas, Michael R. Heath, William Gurney, Simon N. Wood, W. Horbelt, Douglas C. Speirs
Publikováno v:
Marine Ecology Progress Series. 313:173-192
The copepod Calanus finmarchicus is widely distributed over the sub-polar Atlantic and dominates the mesozooplanktonic biomass in that region. Despite this, all previous C. finmarchicus population modelling studies have been spatially and temporally
Autor:
William Gurney, E. D. Clarke, Steven J. Holmes, Douglas C. Speirs, Simon N. Wood, Michael R. Heath
Publikováno v:
Journal of the Royal Statistical Society Series C: Applied Statistics. 55:331-353
Summary The distribution and biomass of phytoplankton in the upper layers of the ocean are important indicators of productivity and carbon cycling. Large scale perturbations in phytoplankton are linked to global climate change, so accurate monitoring