Results 21 to 30 of about 8,858,929 (153)
Ecological ramifications of adaptation to size-selective mortality
Royal Society Open Science, 2021 Size-selective mortality due to harvesting is a threat to numerous exploited species, but how it affects the ecosystem remains largely unexplored. Here, we used a pond mesocosm experiment to assess how evolutionary responses to opposite size-selective ...
Charlotte Evangelista +7 more
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A general framework of multi-population methods with clustering in undetectable dynamic environments [PDF]
, 2011 Copyright @ 2011 IEEETo solve dynamic optimization problems, multiple population methods are used to enhance the population diversity for an algorithm with the aim of maintaining multiple populations in different sub-areas in the fitness landscape. Many
Yang, S, Li, C., Yang, Shengxiang, Li, C
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Experimental study on population-based incremental learning algorithms for dynamic optimization problems [PDF]
, 2005 Copyright @ Springer-Verlag 2005.Evolutionary algorithms have been widely used for stationary optimization problems. However, the environments of real world problems are often dynamic. This seriously challenges traditional evolutionary algorithms.
Yang, S +3 more
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Fauna Norvegica, 1986 The stomach contents of 0 to 3 year old salmon were investigated throughout a single 20 hour period in each of July, August and September 1981. There was no marked diurnal variation in stomach content of fry, while that of parr indicated nocturnal ...
Helge Huru
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Recoveries of Common Seals Phoca vitulina L. tagged along the Norwegian coast
Fauna Norvegica, 1988 A total of 296 Common Seals have been tagged along the Norwegian coast in the period from 1978 to 1987. Thirty six of the tagged seals have been recovered. Twenty six during their first year of life.
Øystein Wiig, Nils Øien
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Stock assessment and exploitation of Atlantic salmon Salmo salar L. in the river Drammenselv
Fauna Norvegica, 1986 In 1985 the total salmon run and the exploitation rate in the river Drammenselv were estimated by combining catch statistics, counts of ascending salmon in a salmon ladder at Hellefoss, and a tagging-recapture experiment of the spawning stock below the ...
Lars P. Hansen +2 more
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Fauna NorvegicaSquare samples were taken at intervals of 3 - 4 weeks (early spring 1972 - late summer 1973) in a heterogenous plant association dominated by Calluna vulgaris and several moss species (Loc.I), and in a homogenous, humid Sphagnum mat (Loc.II) with very ...
Erling Hauge
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Julius-Kühn-Archiv, 2016 Weed species easily establish in crops with a similar life cycle. Especially mono-cropping provides best conditions for such weeds. In maize this is true for Echinochloa crus-galli, which is a C4 plant and one of the worst weeds worldwide.
von Redwitz, Christoph +2 more
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Jurnal Entomologi Indonesia, 2015 The research was conducted in the field of Taro village Gianyar regency and Katung village Bangli regency and at the Laboratory of Biotechnology Faculty of Agricultural Udayana University.
I NYOMAN WIJAYA +3 more
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New Zealand regions, 1986-2001: Population geography [PDF]
, 2005 This paper is primarily concerned with the spatial aspects of population, namely with: (i) patterns of settlement (urban, rural) and attendant population size variations by region, (ii) changes over time between rural and urban areas at a Regional ...
Lindop, J. +3 more
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