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SUMMARY:The impact of climate-induced habitat loss on coral reef fishes in
  the Red Sea - Madeleine Emms\, Department of Zoology
DTSTART:20211111T130000Z
DTEND:20211111T140000Z
UID:TALK161923@talks.cam.ac.uk
CONTACT:Dr Tamsin Samuels
DESCRIPTION:A reduction in coral cover and reef fragmentation have been sh
 own to reduce biodiversity and abundance of coral reef fishes\, but knowle
 dge on how reef fishes are impacted by habitat loss over large spatial and
  temporal scales is still limited. The connectivity of most marine systems
  presents a major challenge in reconstructing such effects from past clima
 tic events\, making it difficult to track immigration\, emigration\, or si
 ze changes of populations. The Red Sea provides an ideal model system to d
 isentangle local demography from the effect of migration\, as its basin is
  enclosed with only one connection to the Indian Ocean in the south. Durin
 g the Last Glacial Maximum (LGM) ~20\,000 years ago\, low sea levels left 
 the Red Sea effectively isolated and highly saline\, resulting in signific
 ant habitat loss and fragmentation. This study uses Next Generation Sequen
 cing data and an Approximate Bayesian Computation (ABC) framework to model
  the complex demographic histories of reef fishes in the model Red Sea sys
 tem\, providing the first high resolution picture of the differing effects
  of habitat loss and fragmentation on a variety of Red Sea reef fishes. Su
 ch an approach allows us to estimate key demographic parameters such as th
 e minimum effective population sizes capable of recovery - what can this t
 ell us about the prospects for reef fish populations in the face of ongoin
 g climate change?
LOCATION:King Richard Room\, Darwin College
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