نتایج جستجو برای: 2002 evaluating resource selection functions ecological modelling 157

تعداد نتایج: 1463443  

2012

Humans live in close relationship to the environment, which they directly and indirectly use and depend on for food resources, building materials, protection, relaxation, to mention but a few examples. Recent years have seen depletion of the health of many natural environments leading to a stronger focus on natural resource based management approaches. While in earlier decades management was dr...

Journal: :ecopersia 2015
davoud akhzari mohammad pessarakli farnaz mahmoodi behnoush farokhzadeh

livestock grazing and rangelands fire are important ecological disturbances influencing the vegetation and soil properties in rangelands ecosystem. this study was conducted to determine the effects of different burned treatments and distances from the water sources on some soil and vegetation properties of rangelands ecosystem. the experiment was conducted in lashgar dar rangelands. vegetation ...

2014
Xin-Xu Li Li-Xia Wang Juan Zhang Yun-Xia Liu Hui Zhang Shi-Wen Jiang Jia-Xu Chen Xiao-Nong Zhou

BACKGROUND The current prevalence of tuberculosis (TB) in the People's Republic of China (P. R. China) demonstrates geographical heterogeneities, which show that the TB prevalence in the remote areas of Western China is more serious than that in the coastal plain of Eastern China. Although a lot of ecological studies have been applied in the exploration on the regional difference of disease ris...

2002
Jeroen Keppens

Compositional modelling is one of the most important knowledge-based approaches to automating domain model construction. However, its use has been limited to physical systems due to the specific presumptions made by existing techniques. Based on a critical survey of existing compositional modellers, the strengths and limitations of compositional modelling for its application in the ecological d...

Journal: :محیط شناسی 0
محمدحسین سرایی استادیار جغرافیا و برنامه ریزی شهری دانشکدة جغرافیا، دانشگاه یزد عبدالحمید زارعی فرشاد کارشناسی ارشد جغرافیا و برنامه ریزی شهری دانشکدة جغرافیا، دانشگاه یزد

with the publication of the brundtland report carried the sustainability discussion into governments and businesses worldwide, much effort has gone into clarifying the meaning of the sustainability concept. to make the concept measurable and applied city sustainable idea, some new method was needed. so the method named ecological footprint has been presented.the ecological footprint method that...

Journal: :Mathematical and Computer Modelling 2006
N. R. Siriwardene B. J. C. Perera

Recently, Genetic Algorithm (GA) has proven to be successful and efficient in identifying the optimal parameters for water resource modelling applications. However, in order to produce efficient and robust solutions, proper selection of GA operators is necessary for the application, before conducting the model parameter optimisation. General guidelines are available for standard GA optimisation...

Journal: :Ecological Informatics 2010
Thu Huong Hoang Koen Lock Ans M. Mouton Peter L. M. Goethals

a r t i c l e i n f o In the present study, classification trees (CTs) and support vector machines (SVMs) were used to study habitat suitability for 30 macroinvertebrate taxa in the Du river in Northern Vietnam. The presence/absence of the 30 most common macroinvertebrate taxa was modelled based on 21 physical-chemical and structural variables. The predictive performance of the CT and SVM model...

Journal: :Ecology letters 2017
Frédéric Barraquand Stilianos Louca Karen C Abbott Christina A Cobbold Flora Cordoleani Donald L DeAngelis Bret D Elderd Jeremy W Fox Priscilla Greenwood Frank M Hilker Dennis L Murray Christopher R Stieha Rachel A Taylor Kelsey Vitense Gail S K Wolkowicz Rebecca C Tyson

Population cycling is a widespread phenomenon, observed across a multitude of taxa in both laboratory and natural conditions. Historically, the theory associated with population cycles was tightly linked to pairwise consumer-resource interactions and studied via deterministic models, but current empirical and theoretical research reveals a much richer basis for ecological cycles. Stochasticity ...

2016
Brigida Gallone Jan Steensels Troels Prahl Leah Soriaga Veerle Saels Beatriz Herrera-Malaver Adriaan Merlevede Miguel Roncoroni Karin Voordeckers Loren Miraglia Clotilde Teiling Brian Steffy Maryann Taylor Ariel Schwartz Toby Richardson Christopher White Guy Baele Steven Maere Kevin J. Verstrepen

Whereas domestication of livestock, pets, and crops is well documented, it is still unclear to what extent microbes associated with the production of food have also undergone human selection and where the plethora of industrial strains originates from. Here, we present the genomes and phenomes of 157 industrial Saccharomyces cerevisiae yeasts. Our analyses reveal that today's industrial yeasts ...

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