[OANNES Foro] Climate-driven changes to ocean circulation and their inferred impacts on marine dispersal patterns

Mario Cabrejos casal en infotex.com.pe
Mie Mayo 4 07:57:56 PDT 2016


Global Ecology and Biogeography

 <http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1466-8238/earlyview>
Early View (Online Version of Record published before inclusion in an issue)

Article first published online: 2 MAY 2016

DOI: 10.1111/geb.12456


 


 


Climate-driven changes to ocean circulation and their inferred impacts on
marine dispersal patterns


Laura J. Wilson1,*, Christopher J. Fulton2, Andrew McC Hogg3, Karen E.
Joyce4, Ben T. M. Radford5,6 and Ceridwen I. Fraser1

1 Fenner School of Environment and Society, Australian National University,
Canberra, ACT, Australia 2 Research School of Biology, Australian National
University, Canberra, ACT, Australia 3 Research School of Earth Sciences and
ARC Centre of Excellence for Climate System Science, Australian National
University, Canberra, Australia 4 College of Science, Technology and
Engineering, James Cook University, Cairns, Qld, Australia 5 Australian
Institute of Marine Science, Crawley, WA, Australia 6 School of Earth and
Environment, University of Western Australia, Crawley, WA, Australia.
*Correspondence: Laura J. Wilson,.E-mail:
<mailto:laura.wilson571 en gmail.com> laura.wilson571 en gmail.com

 


Abstract


Aim


The dispersal and distribution patterns of many marine organisms are driven
by oceanographic conditions, which are influenced by global climate.
Climate-driven oceanographic changes are thus likely to result in
biogeographical changes. We assess how recent and predicted oceanographic
changes affect the dispersal capacities and distributions of ecologically
important (especially habitat-forming) marine organisms.


Location


We include studies from tropical, temperate and sub-polar regions to draw
globally relevant conclusions.


Methods


We review biogeographical, biological and oceanographic studies to
critically evaluate emerging trends in biogeographical responses to
climate-driven oceanographic changes, and predict how future changes will
affect marine ecosystems.


Results


Many oceanic dispersal pathways are being altered by climate change. These
changes will affect marine ecosystems by differentially affecting the
replenishment potential and connectivity of key habitat-forming species. In
particular, the length of propagule pre-competency periods, propagule
behaviour and the geographical distance between areas of suitable habitat
will be critical in determining how oceanographic changes affect the pattern
and success of dispersal events, including the likelihood of species
experiencing poleward range shifts in response to a warming climate.


Main conclusions


Future climate-driven oceanographic changes are likely to strengthen or
weaken different oceanic dispersal pathways, which will either increase or
decrease the potential for dispersal and connectivity in various marine taxa
according to the interaction between the local oceanographic, geographical
and taxon-specific biological factors. A key focus for future work should be
the development of fine-scale near-shore ocean circulation models that can
be used to assess the dispersal response of key marine taxa under various
marine climate change scenarios.

 



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