Greater shrub dominance alters breeding habitat and food resources for migratory songbirds in Alaskan arctic tundra

2014 ◽  
Vol 21 (4) ◽  
pp. 1508-1520 ◽  
Author(s):  
Natalie T. Boelman ◽  
Laura Gough ◽  
John Wingfield ◽  
Scott Goetz ◽  
Ashley Asmus ◽  
...  

2006 ◽  
Vol 2 (3) ◽  
pp. 337-340 ◽  
Author(s):  
Beth A Hahn ◽  
Emily D Silverman

For migratory songbirds nesting in northern temperate forests, a short breeding season demands that males rapidly establish territories. Because critical insect and vegetation resources are unavailable during spring arrival, we suggest that conspecifics serve as settlement cues for males new to a local population. To test conspecific attraction, we conducted playback experiments with American redstarts Setophaga ruticilla . Experimental results demonstrate that song playbacks strongly attract conspecifics, recruiting an average of 4.2 additional males per plot; adult males new to our sites increased, while yearling males failed to respond. Yearlings arrived 6 to 10 days later than adults, raising the possibility that yearlings responded to songs of early arriving adults rather than to playbacks. Our work indicates that conspecific attraction is an important mechanism for breeding habitat selection in an established population of a migratory forest songbird, but the effect is moderated by age, reproductive experience and arrival timing.



1994 ◽  
Vol 4 (2-3) ◽  
pp. 233-249 ◽  
Author(s):  
Scott K. Robinson ◽  
David S. Wilcove

SummaryAlthough much attention has been paid to the impacts of tropical deforestation on populations of Neotropical migrants, fragmentation of breeding habitat may be an equally serious problem for many of these birds. Populations of many migrant songbirds have been declining in recent decades, especially within small woodlots. Censuses from woodlots of different sizes also consistently show that many migrant songbirds are area-sensitive, i.e. they are absent from all but the largest woodlots in a region. In contrast, long-term censuses from large, unfragmented forests show few consistent patterns of decline in Neotropical migrants. Population declines are therefore linked to forest fragmentation because they are most pronounced in small, isolated woodlots.



Author(s):  
Edward B. Rastetter ◽  
Robert B. McKane ◽  
Gaius R. Shaver ◽  
Knute J. Nadelhoffer ◽  
Anne Giblin


Author(s):  
Josh Hashemi ◽  
Donatella Zona ◽  
Kyle A. Arndt ◽  
Aram Kalhori ◽  
Walter C. Oechel


2005 ◽  
Vol 11 (4) ◽  
pp. 525-536 ◽  
Author(s):  
Robert D. Hollister ◽  
Patrick J. Webber ◽  
Craig E. Tweedie


2015 ◽  
Vol 25 (3) ◽  
pp. 779-790 ◽  
Author(s):  
Shannan K. Sweet ◽  
Ashley Asmus ◽  
Matthew E. Rich ◽  
John Wingfield ◽  
Laura Gough ◽  
...  
Keyword(s):  


2003 ◽  
Vol 14 (5) ◽  
pp. 711-720 ◽  
Author(s):  
Marlies E.W. Welle ◽  
Peter J. Vermeulen ◽  
Gaius R. Shaver ◽  
Frank Berendse


1980 ◽  
Vol 34 (2) ◽  
pp. 153-153
Author(s):  
K. A. Kershaw


1981 ◽  
Vol 19 (3) ◽  
pp. 236-237
Author(s):  
T.V. Callaghan


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