Results 171 to 180 of about 33,778 (318)

Evaluating migration hypotheses for the extinct Glyptotherium using ecological niche modeling

open access: yesEcography, EarlyView.
The formation of the Isthmus of Panama allowed for migrations between the once separated continents of North and South America. This led to one of the greatest documented interchanges of biota in Earth history, wherein an array of species across many groups migrated between the continents.
Katherine M. Magoulick   +4 more
wiley   +1 more source

Wintering area and experience effects on spring migration strategies, timing and breeding success in Icelandic‐nesting Common Scoters (Melanitta nigra)

open access: yesIbis, EarlyView.
Earlier spring arrival of migratory birds to breeding sites and advanced breeding often bring enhanced reproductive success but demand good body‐condition. When populations exhibit extensive winter distributions, the differing energetic costs associated with the quality and migration distance to each wintering area can have implications for individual ...
Snæþór Aðalsteinsson   +2 more
wiley   +1 more source

Geodesic line and cross-normal cuts. II [PDF]

open access: bronze, 1968
Jan Kouba, Zbyněk Nádeník
openalex   +1 more source

Regional Dependencies and Local Spillovers: Insights From Commuter Flows

open access: yesJournal of Regional Science, EarlyView.
ABSTRACT A region's growth trajectory is influenced by the economic circumstances of other regions in its proximity. While proximity is often understood in a geographic sense, economic connectivity can take many different forms. In particular, shock transmission processes between regions are inherently asymmetric and heterogeneous, which is not ...
Melanie Krause, Sebastian Kripfganz
wiley   +1 more source

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