| 36638 |
Creator |
ce5b733bb54d91c76a73d8adcb28edd9 |
| 36638 |
Creator |
ext-8ffb58fcefd32135616a0e1b4655cf44 |
| 36638 |
Creator |
ext-e29dffd3c21aeacd100daed46dedd38b |
| 36638 |
Date |
2012-11 |
| 36638 |
Is Part Of |
repository |
| 36638 |
Is Part Of |
p14770911 |
| 36638 |
abstract |
Patterns of endemism in the Neotropics have been explained by restriction of forest
to ‘refugia’ in arid cold-stages of the Quaternary (Haffer J (1969) Speciation in
Amazonian forest birds. Science 165: 131–137). The palaeoecological record, however,
shows no such forest contraction. We review palaeoecological and phylogenetic data
on the response of Neotropical taxa and communities to climatic changes of the Cenozoic.
Solar insolation varies over this period with latitude and geography, including shifts
in opposite directions between high and low latitudes. In the Neotropics, distribution
and abundance patterns originate on a wide range of timescales through the Cenozoic,
down to the currently dominant precession forcing (20 kyr). In contrast, distributions
and abundances at higher latitudes are controlled by obliquity forcing (40 kyr). The
patterns observed by Haffer (1969) are likely derived from pre-Quaternary radiations
and are not inconsistent with palaeoecological findings of continuous forest cover
in major areas of the Neotropics during the Quaternary. The relative proportions of
speciation processes have changed through time between predominantly sympatric to
predominantly allopatric depending on the prevailing characteristics of orbitally
forced climatic changes. Behaviour of Neotropical organisms and ecosystems on long
timescales may be influenced much more by precessional forcing than by the obliquity
forcing that controls high-latitude climate change and glaciations. |
| 36638 |
authorList |
authors |
| 36638 |
issue |
11 |
| 36638 |
status |
peerReviewed |
| 36638 |
uri |
http://data.open.ac.uk/oro/document/215462 |
| 36638 |
uri |
http://data.open.ac.uk/oro/document/215492 |
| 36638 |
uri |
http://data.open.ac.uk/oro/document/215493 |
| 36638 |
uri |
http://data.open.ac.uk/oro/document/215494 |
| 36638 |
uri |
http://data.open.ac.uk/oro/document/215495 |
| 36638 |
uri |
http://data.open.ac.uk/oro/document/215496 |
| 36638 |
uri |
http://data.open.ac.uk/oro/document/215822 |
| 36638 |
volume |
22 |
| 36638 |
type |
AcademicArticle |
| 36638 |
type |
Article |
| 36638 |
label |
Bennett, K. D.; Bhagwat, S. A. and Willis, K. J. (2012). Neotropical refugia.
The Holocene, 22(11) pp. 1207–1214. |
| 36638 |
label |
Bennett, K. D.; Bhagwat, S. A. and Willis, K. J. (2012). Neotropical refugia. The
Holocene, 22(11) pp. 1207–1214. |
| 36638 |
sameAs |
0959683612450204 |
| 36638 |
Title |
Neotropical refugia |
| 36638 |
in dataset |
oro |