نتایج جستجو برای: local adaptation

تعداد نتایج: 666668  

2008
Janet Heuwold Kian Pakzad Christian Heipke

Local context objects have significant impact on object extraction from real aerial or satellite images, since occlusions or shadows can substantially hinder a successful extraction of a particular landscape object one is interested in. This paper presents an adaptation concept for image analysis object models considering local context objects to a lower image resolution. The scale-dependent ad...

2013
Jun Wang Daniel G. Brown Arun Agrawal

Climate variability has been evident on the Mongolian plateau in recent decades. Livelihood adaptation to climate variability is important for local sustainable development. This paper applies an analytical framework focused on adaptation, institutions, and livelihoods to study climate adaptation in the Mongolian grasslands. A household survey was designed and implemented in each of three broad...

Journal: :The American naturalist 1999
C M Lively

The geographic mosaic theory of coevolution is predicated on structured populations of interacting species where gene flow and the force of selection can vary among populations, leading to a mosaic of traits in space. Here, I briefly review some recent studies of adaptation by a sterilizing parasite to structured populations of a freshwater snail. The results show geographic structure as expect...

Journal: :Proceedings. Biological sciences 2011
Rebecca D Schulte Carsten Makus Barbara Hasert Nico K Michiels Hinrich Schulenburg

Coevolving hosts and parasites can adapt to their local antagonist. In studies on natural populations, the observation of local adaptation patterns is thus often taken as indirect evidence for coevolution. Based on this approach, coevolution was previously inferred from an overall pattern of either parasite or host local adaptation. Many studies, however, failed to detect such a pattern. One ex...

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