Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology
The limited amount of ecological data covering offshore parts of the ocean impedes our ability to understand and anticipate the impact of anthropogenic stressors on pelagic marine ecosystems. Isoscapes, i.e., spatial models of the distribution of stable isotope ratios, have been employed in the rece...
Published in: | Frontiers in Ecology and Evolution |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Frontiers Media S.A.
2022
|
Subjects: | |
Online Access: | https://doi.org/10.3389/fevo.2022.986082 https://doaj.org/article/f7f99625ab6740439966415767d81102 |
id |
ftdoajarticles:oai:doaj.org/article:f7f99625ab6740439966415767d81102 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:f7f99625ab6740439966415767d81102 2023-05-15T17:30:11+02:00 Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology Boris Espinasse Anthony Sturbois Sünnje L. Basedow Pierre Hélaouët David G. Johns Jason Newton Clive N. Trueman 2022-10-01T00:00:00Z https://doi.org/10.3389/fevo.2022.986082 https://doaj.org/article/f7f99625ab6740439966415767d81102 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fevo.2022.986082/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2022.986082 https://doaj.org/article/f7f99625ab6740439966415767d81102 Frontiers in Ecology and Evolution, Vol 10 (2022) feeding grounds Bayesian spatial modelling migration pathways trophic baseline ecoregion Evolution QH359-425 Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.3389/fevo.2022.986082 2022-12-30T20:32:39Z The limited amount of ecological data covering offshore parts of the ocean impedes our ability to understand and anticipate the impact of anthropogenic stressors on pelagic marine ecosystems. Isoscapes, i.e., spatial models of the distribution of stable isotope ratios, have been employed in the recent years to investigate spatio-temporal patterns in biogeochemical process and ecological responses. Development of isoscapes on the scale of ocean basins is hampered by access to suitable reference samples. Here we draw on archived material from long-running plankton survey initiatives, to build temporally explicit isoscape models for the North Atlantic Ocean (> 40°N). A total of 570 zooplankton samples were retrieved from Continuous Plankton Recorder archives and analysed for δ13C and δ15N values. Bayesian generalised additive models were developed to (1) model the relations between isotopic values and a set of predictors and (2) predict isotopic values for the whole of the study area. We produced yearly and seasonal isoscape models for the period 1998–2020. These are the first observation-based time-resolved C and N isoscapes developed at the scale of the North Atlantic Ocean. Drawing on the Stable Isotope Trajectory Analysis framework, we identify five isotopically distinct regions. We discuss the hydro-biogeochemical processes that likely explain theses modes, the differences in temporal dynamics (stability and cycles) and compare our results with previous bioregionalization efforts. Finally, we lay down the basis for using the isoscapes as a tool to define predator distributions and their interactions with the trophic environment. The isoscapes developed in this study have the potential to update our knowledge of marine predator ecology and therefore our capacity to improve their conservation in the future. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Frontiers in Ecology and Evolution 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
feeding grounds Bayesian spatial modelling migration pathways trophic baseline ecoregion Evolution QH359-425 Ecology QH540-549.5 |
spellingShingle |
feeding grounds Bayesian spatial modelling migration pathways trophic baseline ecoregion Evolution QH359-425 Ecology QH540-549.5 Boris Espinasse Anthony Sturbois Sünnje L. Basedow Pierre Hélaouët David G. Johns Jason Newton Clive N. Trueman Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology |
topic_facet |
feeding grounds Bayesian spatial modelling migration pathways trophic baseline ecoregion Evolution QH359-425 Ecology QH540-549.5 |
description |
The limited amount of ecological data covering offshore parts of the ocean impedes our ability to understand and anticipate the impact of anthropogenic stressors on pelagic marine ecosystems. Isoscapes, i.e., spatial models of the distribution of stable isotope ratios, have been employed in the recent years to investigate spatio-temporal patterns in biogeochemical process and ecological responses. Development of isoscapes on the scale of ocean basins is hampered by access to suitable reference samples. Here we draw on archived material from long-running plankton survey initiatives, to build temporally explicit isoscape models for the North Atlantic Ocean (> 40°N). A total of 570 zooplankton samples were retrieved from Continuous Plankton Recorder archives and analysed for δ13C and δ15N values. Bayesian generalised additive models were developed to (1) model the relations between isotopic values and a set of predictors and (2) predict isotopic values for the whole of the study area. We produced yearly and seasonal isoscape models for the period 1998–2020. These are the first observation-based time-resolved C and N isoscapes developed at the scale of the North Atlantic Ocean. Drawing on the Stable Isotope Trajectory Analysis framework, we identify five isotopically distinct regions. We discuss the hydro-biogeochemical processes that likely explain theses modes, the differences in temporal dynamics (stability and cycles) and compare our results with previous bioregionalization efforts. Finally, we lay down the basis for using the isoscapes as a tool to define predator distributions and their interactions with the trophic environment. The isoscapes developed in this study have the potential to update our knowledge of marine predator ecology and therefore our capacity to improve their conservation in the future. |
format |
Article in Journal/Newspaper |
author |
Boris Espinasse Anthony Sturbois Sünnje L. Basedow Pierre Hélaouët David G. Johns Jason Newton Clive N. Trueman |
author_facet |
Boris Espinasse Anthony Sturbois Sünnje L. Basedow Pierre Hélaouët David G. Johns Jason Newton Clive N. Trueman |
author_sort |
Boris Espinasse |
title |
Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology |
title_short |
Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology |
title_full |
Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology |
title_fullStr |
Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology |
title_full_unstemmed |
Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology |
title_sort |
temporal dynamics in zooplankton δ13c and δ15n isoscapes for the north atlantic ocean: decadal cycles, seasonality, and implications for predator ecology |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fevo.2022.986082 https://doaj.org/article/f7f99625ab6740439966415767d81102 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Frontiers in Ecology and Evolution, Vol 10 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fevo.2022.986082/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2022.986082 https://doaj.org/article/f7f99625ab6740439966415767d81102 |
op_doi |
https://doi.org/10.3389/fevo.2022.986082 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
10 |
_version_ |
1766126007536844800 |