نتایج جستجو برای: patches and matrix

تعداد نتایج: 16872335  

2013
Magnus Magnusson Arvid Bergsten Frauke Ecke Örjan Bodin Lennart Bodin Birger Hörnfeldt

Forestry is continually changing the habitats for many forest-dwelling species around the world. The grey-sided vole (Myodes rufocanus) has declined since the 1970s in forests of northern Sweden. Previous studies suggested that this might partly be caused by reduced focal forest patch size due to clear-cutting. Proximity and access to old pine forest and that microhabitats often contains stones...

2014
Silindile I. Hadebe Phikelelani S. Ngubane Metse R. Serumula Cephas T. Musabayane

PURPOSE Studies in our laboratory are concerned with developing optional insulin delivery routes based on amidated pectin hydrogel matrix gel. We therefore investigated whether the application of pectin insulin (PI)-containing dermal patches of different insulin concentrations sustain controlled release of insulin into the bloodstream of streptozotocin (STZ)-induced diabetic rats with concomita...

2013
Ricardo Pita António Mira Pedro Beja

The ability of patchy populations to persist in human-dominated landscapes is often assessed using focal patch approaches, in which the local occurrence or abundance of a species is related to the properties of individual patches and the surrounding landscape context. However, useful additional insights could probably be gained through broader, mosaic-level approaches, whereby whole land mosaic...

2010
I-Chieh Lee Shaojun He Po-Lun Lai Alper Yilmaz

Interest points on the building façade are the basic element for 3-D building modeling and texturing. Grouping these points to the same or separate buildings is a fundamental process for establishing building models and detecting building boundaries. The grouping process is generally achieved by analyzing the geometric relation and the distances between the points in the object space, which req...

2005
Pavel Kindlmann Stephanie Aviron Francoise Burel

It is usually assumed that the fluxes of individuals between the subpopulations in a metapopulation are proportional to the sizes of the departure and arrival resource patches and to the inverse of the distance between these two patches, and therefore, can be described by a regression model, which ignores spatial heterogeneity of the landscape between the resource patches. Recently, Kindlmann e...

1999
THOMAS D. SISK NICK M. HADDAD PAUL R. EHRLICH

As habitats become more fragmented, understanding landscape-level effects on habitat quality becomes increasingly important. These effects include factors intrinsic to the habitat fragments, such as vegetation cover and structure, and extrinsic factors, such as the modifying influences of surrounding (matrix) habitats. We develop a spatial model, the Effective Area Model (EAM), that predicts th...

Journal: :Agroforestry Systems 2023

Abstract Wood-pastures are semi-natural systems that combine a grazed grassland with tree layer. Shrubs often controlled, mostly to improve grazing potential, resulting in reduction of the available ecological niches. From conservation perspective, it is thus important identify management practices counter this reduction. Our overall objective was determine value small shrubby patches increase ...

Degradation of plant patches is considered as one of the indices for rangeland degrading health condition. Investigating the accuracy of triple indices (infiltration, stability and soil nutrient cycle) presented by LFA method seems necessary to determine its efficiency in semi-arid areas with the least cost. This study aims to investigate the role of vegetative species and growing forms on soil...

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