منابع مشابه
Does organic farming benefit farmland birds in winter?
The generally higher biodiversity on organic farms may be influenced by management features such as no synthetic pesticide and fertilizer inputs and/or by differences in uncropped habitat at the site and landscape scale. We analysed bird and habitat data collected on 48 paired organic and conventional farms over two winters to determine the extent to which broad-scale habitat differences betwee...
متن کاملPoleward shifts in winter ranges of North American birds.
Climate change is thought to promote the poleward movement of geographic ranges; however, the spatial dynamics, mechanisms, and regional anthropogenic drivers associated with these trends have not been fully explored. We estimated changes in latitude of northern range boundaries, center of occurrence, and center of abundance for 254 species of winter avifauna in North America from 1975 to 2004....
متن کاملApproaching storm: Disappearing winter bloom in Lake Michigan
a Lake Superior Ecosystem Research Center and Department of Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA b Department of Chemistry, Michigan Technological University, Houghton, MI 49931, USA c Department of Geological Engineering and Sciences, Michigan Technological University, Houghton, MI 49931, USA d NOAA Great Lakes Environmental Research Laboratory, 2205 ...
متن کامل“Winter” at Yale
The history of the Yale School of Medicine is illuminated by the names of many great men. A distinguished school is a living organism and the soul which inspires and guides it has been created by the dreams and the visions which have gone before. In the Yale School of Medicine, no one of our distinguished leaders has played a greater role in this creative process than Milton Winternitz. When "W...
متن کاملThermal simulation of a lake with winter ice cover’
A one-dimensional thermodynamic model of a two-component ice and snow cover is added to an existing one-dimensional lake mixing model. Emphasis is placed on the thermodynamic coupling between the ice and mixing models-absent in previous models. The two-dimensional effects of partial ice cover are incorporated into this one-dimensional framework by using a minimum ice thickness. The model is app...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Blue Jay
سال: 1952
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay1588