Home About HyMeX
Motivations
Science questions
Observation strategy
Modelling strategy
Target areas
Key documents
Organisation
International coordination
Working groups
Task teams
National contributions
Endorsements
Resources
Database
Data policy
Publications
Education and summer schools
Drifting balloons (BAMED)
SOP web page
Google maps data visualisation
Workshops Projects
ASICS-MED
MOBICLIMEX
MUSIC
IODA-MED
REMEMBER
FLOODSCALE
EXAEDRE
Offers Links Contacts
Science & Task teams
Science teams
Task teams
Implementation plan
Coordination
International Scientific Steering Committee (ISSC)
Executive Committee for Implementation and Science Coordination (EC-ISC)
Executive Committee - France (EC-Fr)
HyMeX France
HyMeX Italy
HyMeX Spain
Archive
by Hattab, T., Albouy, C., Ben Rais Lasram, F., Somot, S., Le Loc'h, F. and Leprieur, F.
Abstract:
Aim In this paper, we applied the concept of ‘hierarchical filters’ in community ecology to model marine species distribution at nested spatial scales. Location Global, Mediterranean Sea and the Gulf of Gabes (Tunisia). Methods We combined the predictions of bioclimatic envelope models (BEMs) and habitat models to assess the current distribution of 20 exploited marine species in the Gulf of Gabes. BEMs were first built at a global extent to account for the full range of climatic conditions encountered by a given species. Habitat models were then built using fine-grained habitat variables at the scale of the Gulf of Gabes. We also used this hierarchical filtering approach to project the future distribution of these species under both climate change (the A2 scenario implemented with the Mediterranean climatic model NEMOMED8) and habitat loss (the loss of Posidonia oceanica meadows) scenarios. Results The hierarchical filtering approach predicted current species geographical ranges to be on average 56% smaller than those predicted using the BEMs alone. This pattern was also observed under the climate change scenario. Combining the habitat loss and climate change scenarios indicated that the magnitude of range shifts due to climate change was larger than from the loss of P. oceanica meadows. Main conclusions Our findings emphasize that BEMs may overestimate current and future ranges of marine species if species–habitat relationships are not also considered. A hierarchical filtering approach that accounts for fine-grained habitat variables limits the uncertainty associated with model-based recommendations, thus ensuring their outputs remain applicable within the context of marine resource management.
Reference:
Hattab, T., Albouy, C., Ben Rais Lasram, F., Somot, S., Le Loc'h, F. and Leprieur, F., 2014: Towards a better understanding of potential impacts of climate change on marine species distribution: a multiscale modelling approachGlobal Ecology and Biogeography, 23, 1417-1429.
Bibtex Entry:
@Article{Hattab2014,
  Title                    = {Towards a better understanding of potential impacts of climate change on marine species distribution: a multiscale modelling approach},
  Author                   = {Hattab, T. and Albouy, C. and Ben Rais Lasram, F. and Somot, S. and Le Loc'h, F. and Leprieur, F.},
  Journal                  = {Global Ecology and Biogeography},
  Year                     = {2014},

  Month                    = {December},
  Number                   = {12},
  Pages                    = {1417-1429},
  Volume                   = {23},

  Abstract                 = {Aim
In this paper, we applied the concept of ‘hierarchical filters’ in community ecology to model marine species distribution at nested spatial scales.

Location
Global, Mediterranean Sea and the Gulf of Gabes (Tunisia).

Methods
We combined the predictions of bioclimatic envelope models (BEMs) and habitat models to assess the current distribution of 20 exploited marine species in the Gulf of Gabes. BEMs were first built at a global extent to account for the full range of climatic conditions encountered by a given species. Habitat models were then built using fine-grained habitat variables at the scale of the Gulf of Gabes. We also used this hierarchical filtering approach to project the future distribution of these species under both climate change (the A2 scenario implemented with the Mediterranean climatic model NEMOMED8) and habitat loss (the loss of Posidonia oceanica meadows) scenarios.

Results
The hierarchical filtering approach predicted current species geographical ranges to be on average 56% smaller than those predicted using the BEMs alone. This pattern was also observed under the climate change scenario. Combining the habitat loss and climate change scenarios indicated that the magnitude of range shifts due to climate change was larger than from the loss of P. oceanica meadows.

Main conclusions
Our findings emphasize that BEMs may overestimate current and future ranges of marine species if species–habitat relationships are not also considered. A hierarchical filtering approach that accounts for fine-grained habitat variables limits the uncertainty associated with model-based recommendations, thus ensuring their outputs remain applicable within the context of marine resource management.},
  Copublication            = {6: 2 Tu, 1 Ca, 3 Fr},
  Doi                      = {10.1111/geb.12217},
  ISSN                     = {1466-8238},
  Keywords                 = {Climate change; exploited species; habitat loss; hierarchical filtering; Mediterranean Sea; spatial scale; species distribution modelling;},
  Owner                    = {hymexw},
  Timestamp                = {2016.01.07},
  Url                      = {http://dx.doi.org/10.1111/geb.12217}
}