Variability in the availability of dormant copepods to seed productive shelf areas has been hypothesized to influence the abundance of the dominant copepod species Calanus finmarchicus in several regions of the North Atlantic. One source of this variability is advection of dormant copepods in deep w...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.514.8035 http://oxbow.sr.unh.edu/preprints/transport_cfin_firstsub_DSRII_0205.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.514.8035 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.514.8035 2023-05-15T15:47:57+02:00 Catherine Johnson James Pringle Changsheng Chen The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.514.8035 http://oxbow.sr.unh.edu/preprints/transport_cfin_firstsub_DSRII_0205.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.514.8035 http://oxbow.sr.unh.edu/preprints/transport_cfin_firstsub_DSRII_0205.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://oxbow.sr.unh.edu/preprints/transport_cfin_firstsub_DSRII_0205.pdf Calanus finmarchicus copepod dormancy diapause Gulf of Maine interannual variability zooplankton text ftciteseerx 2016-01-08T09:49:17Z Variability in the availability of dormant copepods to seed productive shelf areas has been hypothesized to influence the abundance of the dominant copepod species Calanus finmarchicus in several regions of the North Atlantic. One source of this variability is advection of dormant copepods in deep water. Using Lagrangian particle simulations, we examined the influence of environmental forcing and copepod behavior on transport and retention of dormant C. finmarchicus in the deep Gulf of Maine, in the northwestern Atlantic. Retention in the Gulf of Maine was relatively high,> 40 % over six months, under all conditions simulated. Transport within the Gulf of Maine was high, resulting in shifts of eastern copepods into the western Gulf and of upstream copepods, from slope and Scotian Shelf waters, into the eastern Gulf. Copepod behavior during dormancy was a major source of uncertainty, but it is probably not a major source of interannual variability in retention. Retention increased with the initial depth of dormant copepods, and vertical positioning behavior had a strong influence on retention for simulations started at depths greater than 150 m, because copepods that can stay below basin sill depths are retained. Mean cross-shore winds reduced retention slightly (< 2% absolute difference), and mean alongshore winds increased retention by 4 – 8%. Wind-driven interannual variability in retention was low. Variability in Scotian Shelf inflow had a greater influence on retention than did variability in winds, and inflow-driven changes in retention may contribute to interannual variability in copepod abundance associated with changes in deep-water temperature. Text Calanus finmarchicus North Atlantic Copepods Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Calanus finmarchicus copepod dormancy diapause Gulf of Maine interannual variability zooplankton |
spellingShingle |
Calanus finmarchicus copepod dormancy diapause Gulf of Maine interannual variability zooplankton Catherine Johnson James Pringle Changsheng Chen |
topic_facet |
Calanus finmarchicus copepod dormancy diapause Gulf of Maine interannual variability zooplankton |
description |
Variability in the availability of dormant copepods to seed productive shelf areas has been hypothesized to influence the abundance of the dominant copepod species Calanus finmarchicus in several regions of the North Atlantic. One source of this variability is advection of dormant copepods in deep water. Using Lagrangian particle simulations, we examined the influence of environmental forcing and copepod behavior on transport and retention of dormant C. finmarchicus in the deep Gulf of Maine, in the northwestern Atlantic. Retention in the Gulf of Maine was relatively high,> 40 % over six months, under all conditions simulated. Transport within the Gulf of Maine was high, resulting in shifts of eastern copepods into the western Gulf and of upstream copepods, from slope and Scotian Shelf waters, into the eastern Gulf. Copepod behavior during dormancy was a major source of uncertainty, but it is probably not a major source of interannual variability in retention. Retention increased with the initial depth of dormant copepods, and vertical positioning behavior had a strong influence on retention for simulations started at depths greater than 150 m, because copepods that can stay below basin sill depths are retained. Mean cross-shore winds reduced retention slightly (< 2% absolute difference), and mean alongshore winds increased retention by 4 – 8%. Wind-driven interannual variability in retention was low. Variability in Scotian Shelf inflow had a greater influence on retention than did variability in winds, and inflow-driven changes in retention may contribute to interannual variability in copepod abundance associated with changes in deep-water temperature. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Catherine Johnson James Pringle Changsheng Chen |
author_facet |
Catherine Johnson James Pringle Changsheng Chen |
author_sort |
Catherine Johnson |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.514.8035 http://oxbow.sr.unh.edu/preprints/transport_cfin_firstsub_DSRII_0205.pdf |
genre |
Calanus finmarchicus North Atlantic Copepods |
genre_facet |
Calanus finmarchicus North Atlantic Copepods |
op_source |
http://oxbow.sr.unh.edu/preprints/transport_cfin_firstsub_DSRII_0205.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.514.8035 http://oxbow.sr.unh.edu/preprints/transport_cfin_firstsub_DSRII_0205.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766382925280968704 |