نتایج جستجو برای: ecotone

تعداد نتایج: 925  

2011
Thomas Wesener Michael J. Raupach Peter Decker

To elucidate the speciation mechanisms prevalent within hotspots of biodiversity, and the evolutionary processes behind the rise of their species-rich and endemic biota, we investigated the phylogeny of the giant fire-millipede genus Aphistogoniulus Silvestri, 1897, a Malagasy endemic. This study is the first comprehensive (molecular and morphological) phylogenetic study focusing on millipede (...

2017
Anibariki Ngonyoka Paul S Gwakisa Anna B Estes Linda P Salekwa Happiness J Nnko Peter J Hudson Isabella M Cattadori

BACKGROUND Changes of land cover modify the characteristics of habitat, host-vector interaction and consequently infection rates of disease causing agents. In this paper, we report variations in tsetse distribution patterns, abundance and infection rates in relation to habitat types and age in the Maasai Steppe of northern Tanzania. In Africa, Tsetse-transmitted trypanosomiasis negatively impac...

2017
A. C. Ganguli D. M. Engle P. M. Mayer L. F. Salo

Woody plant expansion into grasslands and savannas is a global concern. Rapid expansion of Juniperus virginiana, a tree native to North America, has profound ecological consequences. We used transplanted J. virginiana seedlings to investigate the role of resource availability on J. virginiana expansion following the removal of fire, the factor historically limiting range expansion of this firei...

2015
Ingrid Stirnemann Alessio Mortelliti Philip Gibbons David B. Lindenmayer Danilo Russo

Vegetation heterogeneity is an inherent feature of most ecosystems, characterises the structure of habitat, and is considered an important driver of species distribution patterns. However, quantifying fine-scale heterogeneity of vegetation cover can be time consuming, and therefore it is seldom measured. Here, we determine if heterogeneity is worthwhile measuring, in addition to the amount of c...

2014
Prapa Sorosjinda-Nunthawarasilp Adisak Bhumiratana

The emergence and spread of multidrug resistant (MDR) malaria caused by Plasmodium falciparum or Plasmodium vivax have become increasingly important in the Greater Mekong Subregion (GMS). MDR malaria is the heritable and hypermutable property of human malarial parasite populations that can decrease in vitro and in vivo susceptibility to proven antimalarial drugs as they exhibit dose-dependent d...

Journal: :International Journal of Advanced Engineering Research and Science 2021

1999
PETER B. REICH DAVID S. ELLSWORTH MICHAEL B. WALTERS JAMES M. VOSE CHARLES GRESHAM JOHN C. VOLIN WILLIAM D. BOWMAN

Convergence in interspecific leaf trait relationships across diverse taxonomic groups and biomes would have important evolutionary and ecological implications. Such convergence has been hypothesized to result from trade-offs that limit the combination of plant traits for any species. Here we address this issue by testing for biome differences in the slope and intercept of interspecific relation...

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