Climate change effects on Antarctic benthos: a spatially explicit model approach

The Antarctic Peninsula is one of the regions on the Earth with the clearest evidence of recent and fast air warming. This air temperature rise has caused massive glacier retreat leading to an increased influx of glacier meltwater which entails hydrological changes in coastal waters, increasing sedi...

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Detalles Bibliográficos
Autores principales: Torre, L., Tabares, P.C.C., Momo, F., Meyer, J.F.C.A., Sahade, R.
Formato: JOUR
Materias:
Bioinformatics
Climate models
Ecosystems
Ice
MATLAB
Sedimentation
Sediments
Antarctic Peninsula
Benthic communities
Biological dynamics
Distribution patterns
Hydrological changes
Lotka-Volterra competition
South Shetland Islands
Spatially explicit modeling
Climate change
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01650009_v141_n4_p733_Torre
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01650009_v141_n4_p733_Torre
record_format dspace
spelling todo:paper_01650009_v141_n4_p733_Torre2023-10-03T15:02:22Z Climate change effects on Antarctic benthos: a spatially explicit model approach Torre, L. Tabares, P.C.C. Momo, F. Meyer, J.F.C.A. Sahade, R. Bioinformatics Climate models Ecosystems Ice MATLAB Sedimentation Sediments Antarctic Peninsula Benthic communities Biological dynamics Distribution patterns Hydrological changes Lotka-Volterra competition South Shetland Islands Spatially explicit modeling Climate change The Antarctic Peninsula is one of the regions on the Earth with the clearest evidence of recent and fast air warming. This air temperature rise has caused massive glacier retreat leading to an increased influx of glacier meltwater which entails hydrological changes in coastal waters, increasing sediment input and ice-scouring impact regime. It has been hypothesized that an increase of sediment load due to glacier retreat resulted in a remarkable benthic community shift in Potter Cove, a small inlet of the South Shetland Islands. In order to test this hypothesis, we developed an explicit spatial model to explore the link between sedimentation and ice-scouring increase upon four of the most conspicuous benthic species. This is a valuable novel approach since disturbances are strongly dependent of the space. The model takes into account sediment and population dynamics with Lotka-Volterra competition, a sediment-dependent mortality term and a randomized ice-scouring biomass removal. With the developed algorithm, and using a MATLAB environment, numerical simulations for scenarios with different sedimentation and ice-impact rates were undertaken in order to evaluate the effect of this phenomenon on biological dynamics. Comparing simulation results with biological data, the model not only recreates the spatial community distribution pattern but also seems to be able to recreate the shifts in abundance under sedimentation enhancement, pointing out its importance as a structuring factor of polar benthic communities. Considering the challenges of Antarctic field work, this model represents a powerful tool for assessing, understanding, and predicting the effects of climate change on threatened Antarctic coastal ecosystems. © 2017, Springer Science+Business Media Dordrecht. Fil:Momo, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01650009_v141_n4_p733_Torre
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bioinformatics
Climate models
Ecosystems
Ice
MATLAB
Sedimentation
Sediments
Antarctic Peninsula
Benthic communities
Biological dynamics
Distribution patterns
Hydrological changes
Lotka-Volterra competition
South Shetland Islands
Spatially explicit modeling
Climate change
spellingShingle Bioinformatics
Climate models
Ecosystems
Ice
MATLAB
Sedimentation
Sediments
Antarctic Peninsula
Benthic communities
Biological dynamics
Distribution patterns
Hydrological changes
Lotka-Volterra competition
South Shetland Islands
Spatially explicit modeling
Climate change
Torre, L.
Tabares, P.C.C.
Momo, F.
Meyer, J.F.C.A.
Sahade, R.
Climate change effects on Antarctic benthos: a spatially explicit model approach
topic_facet Bioinformatics
Climate models
Ecosystems
Ice
MATLAB
Sedimentation
Sediments
Antarctic Peninsula
Benthic communities
Biological dynamics
Distribution patterns
Hydrological changes
Lotka-Volterra competition
South Shetland Islands
Spatially explicit modeling
Climate change
description The Antarctic Peninsula is one of the regions on the Earth with the clearest evidence of recent and fast air warming. This air temperature rise has caused massive glacier retreat leading to an increased influx of glacier meltwater which entails hydrological changes in coastal waters, increasing sediment input and ice-scouring impact regime. It has been hypothesized that an increase of sediment load due to glacier retreat resulted in a remarkable benthic community shift in Potter Cove, a small inlet of the South Shetland Islands. In order to test this hypothesis, we developed an explicit spatial model to explore the link between sedimentation and ice-scouring increase upon four of the most conspicuous benthic species. This is a valuable novel approach since disturbances are strongly dependent of the space. The model takes into account sediment and population dynamics with Lotka-Volterra competition, a sediment-dependent mortality term and a randomized ice-scouring biomass removal. With the developed algorithm, and using a MATLAB environment, numerical simulations for scenarios with different sedimentation and ice-impact rates were undertaken in order to evaluate the effect of this phenomenon on biological dynamics. Comparing simulation results with biological data, the model not only recreates the spatial community distribution pattern but also seems to be able to recreate the shifts in abundance under sedimentation enhancement, pointing out its importance as a structuring factor of polar benthic communities. Considering the challenges of Antarctic field work, this model represents a powerful tool for assessing, understanding, and predicting the effects of climate change on threatened Antarctic coastal ecosystems. © 2017, Springer Science+Business Media Dordrecht.
format JOUR
author Torre, L.
Tabares, P.C.C.
Momo, F.
Meyer, J.F.C.A.
Sahade, R.
author_facet Torre, L.
Tabares, P.C.C.
Momo, F.
Meyer, J.F.C.A.
Sahade, R.
author_sort Torre, L.
title Climate change effects on Antarctic benthos: a spatially explicit model approach
title_short Climate change effects on Antarctic benthos: a spatially explicit model approach
title_full Climate change effects on Antarctic benthos: a spatially explicit model approach
title_fullStr Climate change effects on Antarctic benthos: a spatially explicit model approach
title_full_unstemmed Climate change effects on Antarctic benthos: a spatially explicit model approach
title_sort climate change effects on antarctic benthos: a spatially explicit model approach
url http://hdl.handle.net/20.500.12110/paper_01650009_v141_n4_p733_Torre
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AT tabarespcc climatechangeeffectsonantarcticbenthosaspatiallyexplicitmodelapproach
AT momof climatechangeeffectsonantarcticbenthosaspatiallyexplicitmodelapproach
AT meyerjfca climatechangeeffectsonantarcticbenthosaspatiallyexplicitmodelapproach
AT sahader climatechangeeffectsonantarcticbenthosaspatiallyexplicitmodelapproach
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