نتایج جستجو برای: modification of landscape directly affects ecological processes

تعداد نتایج: 21225525  

Journal: :Proceedings. Biological sciences 2015
Renato Henriques-Silva Frédéric Boivin Vincent Calcagno Mark C Urban Pedro R Peres-Neto

Dispersal has long been recognized as a mechanism that shapes many observed ecological and evolutionary processes. Thus, understanding the factors that promote its evolution remains a major goal in evolutionary ecology. Landscape connectivity may mediate the trade-off between the forces in favour of dispersal propensity (e.g. kin-competition, local extinction probability) and those against it (...

Journal: :Ecological processes 2022

Abstract Background One way in which we make inferences about ecological processes is via experimentation. Many happen at landscape extents and it this extent that experimentation more challenging. This review explores the intersection between experimentation, ecology. Specifically, seeks to discover how scientists design experiments understand scales. Results I found 87 papers where these thre...

Journal: :international journal of environmental research 2012
n. fumagalli a. toccolini

linear green infrastructures along rivers and canals serve different functions: green corridors, or ecological network, maintain biological diversity, improve water quality, and provide areas for fauna and flora to grow and thrive. greenways connect people with landscape resources and serve as recreational areasthat are easy to use and accessible to the greatest number of potential human users....

2012

Landscape ecology, if not ecology in general, is largely founded on the notion that environmental patterns strongly influence ecological processes [1, 2]. The habitats in which organisms live, for example, are spatially structured at a number of scales, and these patterns interact with organism perception and behavior to drive the higher level processes of population dynamics and community stru...

2005
N. D. MacLeod J. G. McIvor

Contemporary Australian rangeland management is characterised by concurrent processes of a continuing intensification of land management practices and simplification of landscape ecological processes. This dual characteristic is associated with increasing levels of potential conflict between land management practices that promote improved economic performance of rangeland enterprises at the app...

Journal: :محیط شناسی 0
طاهره کوخائی کارشناسی ارشد مهندسی طراحی محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران محمدرضا مثنوی دانشیار گروه مهندسی طراحی محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران

introduction the urban population experienced rapid growth in the recent decades, particularly between 1975 and 2000 when it has reached from 1.5 to more than 2 billion people. by turn of the century; half of the world's populations are concentrated in cities. this would severely affect the quality of life in urban areas. accordingly, cities will be faced with significant challenges in inf...

2012
Jarosław Balon Miłosz Jodłowski

The landscape pattern in the high-mountains is significantly more complex than in the lowlands. Theories, models and methods which are usually applied in landscape studies (such as the geo-complex model and the patch-corridor-matrix model) are inadequate or insufficient in regard to high-mountains. The altitude is the main factor determining the multi-dimensionality of the high-mountain landsca...

Journal: :international journal of architecture and urban development 0
shahindokht barghjelveh nima sayad

ecological destruction in human-dominated landscapes has significant impacts on environment sustainability internationally. landscape planning can play a role in mitigating the effects of human-related activities. one element of landscape planning involves the analysis of the biological, spatial and social arrangement of areas in an urban environment and identifying characteristics that are und...

2006
Monica G. Turner

■ Abstract Landscape ecology focuses on the reciprocal interactions between spatial pattern and ecological processes, and it is well integrated with ecology. The field has grown rapidly over the past 15 years. The persistent influence of land-use history and natural disturbance on contemporary ecosystems has become apparent. Development of pattern metrics has largely stabilized, and they are wi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و 1387

we show that when both sources ( lepton flavor violation sources and cp-violating phases) are present, the electric dipole moment of the electron, $d_e$, receives a contribution from the phase of the trilinear $a$-term of staus, $phi_{a_ au}$. for $phi_{a_ au}=pi/2$, the value of $d_e$, depending on the ratios of the lfv mass elements, can range between zero and three orders of magnitude a...

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