نتایج جستجو برای: physical landscape features

تعداد نتایج: 1208416  

2014
Jessica D. Petersen Brian A. Nault

1. Reductions in natural habitat are implicated in declining honeybee Apis mellifera L. and wild bee populations, thereby threatening crop production. This concern has stimulated interest in identifying landscape-level impacts on bee-mediated pollination services, but previous studies have only inferred connections between landscape, bees and yield through generalized linear regressions. 2. We ...

Journal: :Memoirs of the American Academy of Arts and Sciences 1906

Journal: :Biology letters 2008
Julie A Blanchong Michael D Samuel Kim T Scribner Byron V Weckworth Julia A Langenberg Kristine B Filcek

Predicting the spread of wildlife disease is critical for identifying populations at risk, targeting surveillance and designing proactive management programmes. We used a landscape genetics approach to identify landscape features that influenced gene flow and the distribution of chronic wasting disease (CWD) in Wisconsin white-tailed deer. CWD prevalence was negatively correlated with genetic d...

2003
William H. Romme Merrill Kaufmann Thomas T. Veblen Rosemary Sherriff Claudia Regan

The term “landscape structure” refers to the configuration of vegetation and other land features over a large land area (usually an extent of many square kilometers). A landscape can be regarded as a mosaic composed of patches of different kinds— for example, different forest types, landforms, or human-built structures such as roads. The scientific discipline of landscape ecology is concerned w...

2009
Louise E. Buck Sara J. Scherr

T his chapter guides development practitioners in fostering communication and learning to shape innovation systems for managing agriculture and natural resources across landscape systems and to jointly achieve sustainable production, ecosystem/biodiversity, and rural livelihood goals. This ecoagriculture landscape perspective accounts for the physical and biological features of an area together...

2008
Josef Lankes Christian M. Schweda

The number of business applications operated by enterprises to provide support for the business has increased over the last years. With increasing number of applications and connections between them, also the overall complexity of the application landscape has grown. A main task in managing an application landscape is maintaining quality levels. This article contributes a set of metrics for mea...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2004
R P Joshi Q Hu K H Schoenbach S J Beebe

We provide a simple, but physical analysis for cell irreversibility and apoptosis in response to an ultrashort (nanosecond), high-intensity electric pulse. Our approach is based on an energy landscape model for determining the temporal evolution of the configurational probability function p(q). The primary focus is on obtaining qualitative predictions of a pulse width dependence to apoptotic ce...

Journal: :I. J. Bifurcation and Chaos 2015
Ana Yun Jaemin Shin Yibao Li Seunggyu Lee Junseok Kim

We numerically investigate periodic travelling wave solutions for a diffusive predator–prey system with landscape features. The landscape features are modelled through the homogeneous Dirichlet boundary condition which is imposed at the edge of the obstacle domain. To effectively treat the Dirichlet boundary condition, we employ a robust and accurate numerical technique by using a boundary cont...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید