نتایج جستجو برای: open woodland

تعداد نتایج: 396720  

2015
R. J. WARREN S. M. PEARSON S. HENRY K. ROSSOUW J. P. LOVE M. J. OLEJNICZAK K. J. ELLIOTT M. A. BRADFORD

Exurban development (e.g., second homes) in woodlands spreads urban land use impacts beyond suburbs, but because exurban developments often retain many components of original ecosystem structure—such as a forest canopy rather than open lawn—their ecological impacts may be underestimated. Changes in seed-dispersing ant behavior prompted by exurban land use, such as edge avoidance, may pose delet...

Journal: :ISPRS Int. J. Geo-Information 2015
Dong Liang Yan Zuo Linsheng Huang Jinling Zhao Ling Teng Fan Yang

Land cover plays an important role in the climate and biogeochemistry of the Earth system. It is of great significance to produce and evaluate the global land cover (GLC) data when applying the data to the practice at a specific spatial scale. The objective of this study is to evaluate and validate the consistency of the Moderate Resolution Imaging Spectroradiometer (MODIS) land cover product (...

2004
Dennis D. Baldocchi Liukang Xu Nancy Kiang

Savannas and open grasslands often co-exist in semi-arid regions. Questions that remain unanswered and are of interest to biometeorologists include: how do these contrasting landscapes affect the exchanges of energy on seasonal and annual time scales; and, do biophysical constraints imposed by water supply and water demand affect whether the land is occupied by open grasslands or savanna? To ad...

2002
Jill Butler Keith Alexander Ted Green

Decaying wood habitats are rare in Europe because of centuries of forestry and agricultural practices. Where there has been continuous woodland cover and within it an unbroken presence of old trees, the decaying wood communities are exceptional. The main woodland management systems operating in Europe are explained and how they influence the decaying wood component and associated wildlife. Prio...

Journal: :Biodiversity and Conservation 2021

Abstract Traditional husbandry fostered rich semi-open oakwood communities composed of forest and non-forest species. In the eastern Carpathian region, silvo-pastoralism was commonplace by mid-1900s. This study aimed to determine state preservation ecotonal character grassland-woodland interfaces in formerly pastured cultural landscapes SE-Polish foothills W-Ukrainian Ciscarpathia context land-...

2007
CHARLES J. KREBS

1. House mouse Mus domesticus outbreaks in the grain-growing areas of south-eastern Australia occur irregularly and may be local or widespread, covering thousands of square kilometres. All natural and agricultural habitats are occupied when house mouse numbers are high, and the question we addressed was whether we can distinguish source and sink habitats within these agricultural landscapes so ...

2013
Scott L. Powell Andrew J. Hansen Thomas J. Rodhouse Lisa K. Garrett Julio L. Betancourt Gordon H. Dicus Meghan K. Lonneker

Managers of protected natural areas increasingly are confronted with novel ecological conditions and conflicting objectives to preserve the past while fostering resilience for an uncertain future. This dilemma may be pronounced at range peripheries where rates of change are accelerated and ongoing invasions often are perceived as threats to local ecosystems. We provide an example from City of R...

2015
David J. Eldridge Santiago Soliveres

Since European settlement, there has been a dramatic increase in the density, cover and distribution of woody plants in former grassland and open woodland. There is a widespread belief that shrub encroachment is synonymous with declines in ecosystem functions, and often it is associated with landscape degradation or desertification. Indeed, this decline in ecosystem functioning is considered to...

Journal: :Molecular ecology 2007
Silke Werth Felix Gugerli Rolf Holderegger Helene H Wagner Daniela Csencsics Christoph Scheidegger

Epiphytes are strongly affected by the population dynamics of their host trees. Owing to the spatio-temporal dynamics of host tree populations, substantial dispersal rates--corresponding to high levels of gene flow--are needed for populations to persist in a landscape. However, several epiphytic lichens have been suggested to be dispersal-limited, which leads to the expectation of low gene flow...

Journal: :Journal of human evolution 2017
Alex K Piel Paolo Strampelli Emily Greathead R Adriana Hernandez-Aguilar Jim Moore Fiona A Stewart

Comparative data on the diets of extant primates inform hypotheses about hominin resource use. Historically, data describing chimpanzee diets stem primarily from forest-dwelling communities, and we lack comparative data from chimpanzees that live in mosaic habitats that more closely resemble those reconstructed for Plio-Pleistocene hominins. We present data on the diet of a partially-habituated...

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