× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
f
3
b
2
e
2
b
2
j
2
E
2
o
2
L
2
m
2
R
2
C
2
b
2
New Topic  
smooth15 smooth15
wrote...
Posts: 75
Rep: 0 0
11 years ago
What are the effects of global warming on bird migration in America?



thank you in advance.
Read 220 times
1 Reply

Related Topics

Replies
wrote...
11 years ago
Global warming would be expected to cause the normal range for any particular species to shift both northward and upward in elevation. This prediction comes from the fact that such range shifts are well-documented for climate changes that occurred during the many glacial (ice-age) and inter-glacial (warm) periods of the Pleistocene (i.e., the last few million years). For example, when the Earth was warming up after the last ice age peaked around 20,000 years ago, scientists have been able to see (in the fossil record, in pollen samples from ancient lake bottoms, etc.) that species that were mobile enough to move northward and upward in elevation did just that. Species that could not keep pace with the climate changes became extinct, either because their mobility was insufficient to keep up with the rate of habitat change, or because suitable habitat was not available in more northern areas. Both global temperature analyses and continental U.S climate analyses indicate that modest but significant warming has occurred during this century, thus it is essential to look at how animal and plant species and ecosystems are responding.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  618 People Browsing
Related Images
  
 748
  
 1270
  
 218
Your Opinion
What's your favorite math subject?
Votes: 559