نتایج جستجو برای: northern eurasia

تعداد نتایج: 114337  

Journal: :Journal of Geophysical Research: Solid Earth 1997

2012
Jussi T. Eronen M. Fortelius Christine M. Janis

Neogene cooling and aridifi cation in the Northern Hemisphere have long been recognized, but there are no studies comparing patterns of aridity gradients or differences between North America and Eurasia. Large herbivorous mammals are an excellent source for understanding large-scale environmental and climatic patterns because their molar crown height (hypsodonty) refl ects both habitat and prec...

Journal: :Remote Sensing 2013
Uma S. Bhatt Donald A. Walker Martha K. Raynolds Peter A. Bieniek Howard E. Epstein Josefino C. Comiso Jorge E. Pinzón Compton J. Tucker Igor V. Polyakov

Vegetation productivity trends for the Arctic tundra are updated for the 1982–2011 period and examined in the context of land surface temperatures and coastal sea ice. Understanding mechanistic links between vegetation and climate parameters contributes to model advancements that are necessary for improving climate projections. This study employs remote sensing data: Global Inventory Modeling a...

Journal: :The Journal of parasitology 2008
Eric P Hoberg Arthur Abrams Vanessa O Ezenwa

Abomasal nematodes (Ostertagiine: Trichostrongyloidea) representing a previously unrecognized genus and species are reported in African buffalo (Syncerus caffer caffer) from Kenya, Uganda, and South Africa. Africanastrongylus buceros gen. nov. et sp. nov. is characterized by a symmetrical tapering synlophe in the cervical region and a maximum of 60 ridges in males and females. Bursal structure ...

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