Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways.
Reduction of ecosystem connectivity has long-lasting impacts on food webs. Anadromous fish, which migrate from marine to freshwater ecosystems to complete reproduction, have seen their historically larger ecosystem role undercut by widespread riverine habitat fragmentation and other impacts mainly d...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2019
|
Subjects: | |
Online Access: | http://hdl.handle.net/10255/dryad.215927 https://doi.org/10.5061/dryad.668365q |
id |
ftdryad:oai:v1.datadryad.org:10255/dryad.215927 |
---|---|
record_format |
openpolar |
spelling |
ftdryad:oai:v1.datadryad.org:10255/dryad.215927 2023-05-15T15:27:49+02:00 Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways. Dias, Beatriz S. Frisk, Michael G. Jordaan, Adrian 2019-05-28T18:39:02Z http://hdl.handle.net/10255/dryad.215927 https://doi.org/10.5061/dryad.668365q unknown doi:10.5061/dryad.668365q/1 doi:10.5061/dryad.668365q/2 doi:10.1371/journal.pone.0217008 doi:10.5061/dryad.668365q Dias BS, Frisk MG, Jordaan A (2019) Opening the tap: increased riverine connectivity strengthens marine food web pathways. PLOS ONE 14(5): e0217008. http://hdl.handle.net/10255/dryad.215927 Ecopath with Ecosim Anadromous forage fish Northeast U.S. Large Marine Ecosystem Riverine connectivity Article 2019 ftdryad https://doi.org/10.5061/dryad.668365q https://doi.org/10.5061/dryad.668365q/1 https://doi.org/10.5061/dryad.668365q/2 https://doi.org/10.1371/journal.pone.0217008 2020-01-01T16:28:15Z Reduction of ecosystem connectivity has long-lasting impacts on food webs. Anadromous fish, which migrate from marine to freshwater ecosystems to complete reproduction, have seen their historically larger ecosystem role undercut by widespread riverine habitat fragmentation and other impacts mainly derived from anthropogenic sources. The result has been extensive extirpations and increased susceptibility to a suite of environmental factors that currently impede recovery. Under this present-day context of reduced productivity and connectivity, aggressive management actions and enforcement of catch limits including bycatch caps and complete moratoria on harvest have followed. What remains less understood are the implications of changes to food webs that co-occurred. What benefits restoration could provide in terms of ecosystem functioning in relation to economic costs associated with dam removal and remediation is unknown and can limit the scope and value of restoration activities. Here we employ, historical landscape-based biomass estimates of anadromous alosine for the first time in an ecosystem modeling of the Northeast US large marine ecosystem (LME), to evaluate the value of improving connectivity by measuring the increase in energy flow and population productivity. We compared a restored alosine model to a contemporary model, analyzing the impacts of the potential increase of connectivity between riverine and oceanic systems. We observed changes in ecosystem functional structure and widespread ecosystem benefits for fisheries and conservation efforts. A key advantage was the potential for a 26% biomass increase of piscivorous with high economic value, including Atlantic cod, and for a 69% increase for species of conservation concern such as pelagic sharks, seabirds and marine mammals. Our study highlights the benefits of increased connectivity between freshwater and ocean ecosystems. We demonstrate the significant role anadromous forage fish could play in improving specific fisheries and overall ecosystem functioning, mainly through the diversification of species capable of transferring primary production to upper trophic levels, adding to benefits associated with their restoration. Article in Journal/Newspaper atlantic cod Dryad Digital Repository (Duke University) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Ecopath with Ecosim Anadromous forage fish Northeast U.S. Large Marine Ecosystem Riverine connectivity |
spellingShingle |
Ecopath with Ecosim Anadromous forage fish Northeast U.S. Large Marine Ecosystem Riverine connectivity Dias, Beatriz S. Frisk, Michael G. Jordaan, Adrian Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways. |
topic_facet |
Ecopath with Ecosim Anadromous forage fish Northeast U.S. Large Marine Ecosystem Riverine connectivity |
description |
Reduction of ecosystem connectivity has long-lasting impacts on food webs. Anadromous fish, which migrate from marine to freshwater ecosystems to complete reproduction, have seen their historically larger ecosystem role undercut by widespread riverine habitat fragmentation and other impacts mainly derived from anthropogenic sources. The result has been extensive extirpations and increased susceptibility to a suite of environmental factors that currently impede recovery. Under this present-day context of reduced productivity and connectivity, aggressive management actions and enforcement of catch limits including bycatch caps and complete moratoria on harvest have followed. What remains less understood are the implications of changes to food webs that co-occurred. What benefits restoration could provide in terms of ecosystem functioning in relation to economic costs associated with dam removal and remediation is unknown and can limit the scope and value of restoration activities. Here we employ, historical landscape-based biomass estimates of anadromous alosine for the first time in an ecosystem modeling of the Northeast US large marine ecosystem (LME), to evaluate the value of improving connectivity by measuring the increase in energy flow and population productivity. We compared a restored alosine model to a contemporary model, analyzing the impacts of the potential increase of connectivity between riverine and oceanic systems. We observed changes in ecosystem functional structure and widespread ecosystem benefits for fisheries and conservation efforts. A key advantage was the potential for a 26% biomass increase of piscivorous with high economic value, including Atlantic cod, and for a 69% increase for species of conservation concern such as pelagic sharks, seabirds and marine mammals. Our study highlights the benefits of increased connectivity between freshwater and ocean ecosystems. We demonstrate the significant role anadromous forage fish could play in improving specific fisheries and overall ecosystem functioning, mainly through the diversification of species capable of transferring primary production to upper trophic levels, adding to benefits associated with their restoration. |
format |
Article in Journal/Newspaper |
author |
Dias, Beatriz S. Frisk, Michael G. Jordaan, Adrian |
author_facet |
Dias, Beatriz S. Frisk, Michael G. Jordaan, Adrian |
author_sort |
Dias, Beatriz S. |
title |
Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways. |
title_short |
Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways. |
title_full |
Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways. |
title_fullStr |
Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways. |
title_full_unstemmed |
Data from: Opening the tap: increased riverine connectivity strengthens marine food web pathways. |
title_sort |
data from: opening the tap: increased riverine connectivity strengthens marine food web pathways. |
publishDate |
2019 |
url |
http://hdl.handle.net/10255/dryad.215927 https://doi.org/10.5061/dryad.668365q |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_relation |
doi:10.5061/dryad.668365q/1 doi:10.5061/dryad.668365q/2 doi:10.1371/journal.pone.0217008 doi:10.5061/dryad.668365q Dias BS, Frisk MG, Jordaan A (2019) Opening the tap: increased riverine connectivity strengthens marine food web pathways. PLOS ONE 14(5): e0217008. http://hdl.handle.net/10255/dryad.215927 |
op_doi |
https://doi.org/10.5061/dryad.668365q https://doi.org/10.5061/dryad.668365q/1 https://doi.org/10.5061/dryad.668365q/2 https://doi.org/10.1371/journal.pone.0217008 |
_version_ |
1766358229629009920 |