2008
McClure, T. J. Beechie S. M. Carlson M. M.
Evolutionary consequences of habitat loss for Pacific anadromous salmonids Journal Article
In: Evolutionary Applications, vol. 1, no. 2, pp. 300-18, 2008, ISSN: 1752-4571.
Abstract | Links | BibTeX | Tags: dams, differential habitat loss, evolutionary trajectory, genetic variation, Oncorhynchus
@article{doi:10.1111/j.1752-4571.2008.00030.x,
title = {Evolutionary consequences of habitat loss for Pacific anadromous salmonids},
author = {T. J. Beechie S. M. Carlson M. M. McClure},
url = {https://angelo.berkeley.edu/wp-content/uploads/sites/59/McClure_2008_EvoApp.pdf},
doi = {doi:10.1111/j.1752-4571.2008.00030.x},
issn = {1752-4571},
year = {2008},
date = {2008-00-00},
journal = {Evolutionary Applications},
volume = {1},
number = {2},
pages = {300-18},
abstract = {Large portions of anadromous salmonid habitat in the western United States
has been lost because of dams and other blockages. This loss has the potential
to affect salmonid evolution through natural selection if the loss is biased,
affecting certain types of habitat differentially, and if phenotypic traits correlated
with those habitat types are heritable. Habitat loss can also affect salmonid
evolution indirectly, by reducing genetic variation and changing its
distribution within and among populations. In this paper, we compare the
characteristics of lost habitats with currently accessible habitats and review the
heritability of traits which show correlations with habitat/environmental gradients.
We find that although there is some regional variation, inaccessible habitats
tend to be higher in elevation, wetter and both warmer in the summer and
colder in the winter than habitats currently available to anadromous salmonids.
We present several case studies that demonstrate either a change in phenotypic
or life history expression or an apparent reduction in genetic variation associated
with habitat blockages. These results suggest that loss of habitat will alter
evolutionary trajectories in salmonid populations and Evolutionarily Significant
Units. Changes in both selective regime and standing genetic diversity might
affect the ability of these taxa to respond to subsequent environmental perturbations.
Both natural and anthropogenic and should be considered seriously in
developing management and conservation strategies.},
keywords = {dams, differential habitat loss, evolutionary trajectory, genetic variation, Oncorhynchus},
pubstate = {published},
tppubtype = {article}
}
Large portions of anadromous salmonid habitat in the western United States
has been lost because of dams and other blockages. This loss has the potential
to affect salmonid evolution through natural selection if the loss is biased,
affecting certain types of habitat differentially, and if phenotypic traits correlated
with those habitat types are heritable. Habitat loss can also affect salmonid
evolution indirectly, by reducing genetic variation and changing its
distribution within and among populations. In this paper, we compare the
characteristics of lost habitats with currently accessible habitats and review the
heritability of traits which show correlations with habitat/environmental gradients.
We find that although there is some regional variation, inaccessible habitats
tend to be higher in elevation, wetter and both warmer in the summer and
colder in the winter than habitats currently available to anadromous salmonids.
We present several case studies that demonstrate either a change in phenotypic
or life history expression or an apparent reduction in genetic variation associated
with habitat blockages. These results suggest that loss of habitat will alter
evolutionary trajectories in salmonid populations and Evolutionarily Significant
Units. Changes in both selective regime and standing genetic diversity might
affect the ability of these taxa to respond to subsequent environmental perturbations.
Both natural and anthropogenic and should be considered seriously in
developing management and conservation strategies.
has been lost because of dams and other blockages. This loss has the potential
to affect salmonid evolution through natural selection if the loss is biased,
affecting certain types of habitat differentially, and if phenotypic traits correlated
with those habitat types are heritable. Habitat loss can also affect salmonid
evolution indirectly, by reducing genetic variation and changing its
distribution within and among populations. In this paper, we compare the
characteristics of lost habitats with currently accessible habitats and review the
heritability of traits which show correlations with habitat/environmental gradients.
We find that although there is some regional variation, inaccessible habitats
tend to be higher in elevation, wetter and both warmer in the summer and
colder in the winter than habitats currently available to anadromous salmonids.
We present several case studies that demonstrate either a change in phenotypic
or life history expression or an apparent reduction in genetic variation associated
with habitat blockages. These results suggest that loss of habitat will alter
evolutionary trajectories in salmonid populations and Evolutionarily Significant
Units. Changes in both selective regime and standing genetic diversity might
affect the ability of these taxa to respond to subsequent environmental perturbations.
Both natural and anthropogenic and should be considered seriously in
developing management and conservation strategies.