Green crab larval retention in Willapa Bay, Washington: an intensive Lagrangian modeling approach

Neil S. Banas, P. Sean McDonald, David A. Armstrong

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The European green crab (Carcinus maenas) is invasive on the U.S. West Coast. This study uses a high-resolution circulation model to determine the likelihood that green crab larvae spawned in Willapa Bay, Washington could be retained by circulation and behavior long enough to reach maturity and resettle within the bay. A particle-tracking method (the "diffusive Lagrangian return map") is presented that makes it possible to track the dispersion of hundreds of thousands of model larvae-each subject to three-dimensional advection, vertical turbulent diffusion, and imposed vertical migration behavior-over their full 30-50 days development time with modest computational resources. Larvae spawned in summer show significant retention (5-40%) in the southern and western portions of the bay, including the Stackpole shoals near the mouth, the area most likely to be colonized by late-stage megalopae arriving from the coastal ocean. Larvae spawned in spring show much less retention throughout the bay because of (1) increased flushing caused by increased river input relative to summer conditions and (2) longer development times caused by lower water temperatures. The role of larval swimming behavior is secondary to hydrodynamics in setting these spatial and seasonal patterns of retention. 

LanguageEnglish
Pages893-905
Number of pages13
JournalEstuaries and Coasts
Volume32
Issue number5
DOIs
Publication statusPublished - 2009

Fingerprint

Carcinus maenas
crab
larva
larvae
modeling
swimming behavior
turbulent diffusion
summer
vertical migration
migratory behavior
flushing
hydrodynamics
mouth
advection
water temperature
oceans
seasonal variation
coasts
rivers
coast

Keywords

  • biophysical modeling
  • circulation modeling
  • dispersion
  • green crab
  • individual-based modeling
  • invasive species
  • larval behavior
  • particle tracking
  • Willapa Bay

Cite this

Banas, Neil S. ; McDonald, P. Sean ; Armstrong, David A. / Green crab larval retention in Willapa Bay, Washington : an intensive Lagrangian modeling approach. In: Estuaries and Coasts. 2009 ; Vol. 32, No. 5. pp. 893-905.
@article{fe4612a0b29b4ddeb2a460b65d0992e9,
title = "Green crab larval retention in Willapa Bay, Washington: an intensive Lagrangian modeling approach",
abstract = "The European green crab (Carcinus maenas) is invasive on the U.S. West Coast. This study uses a high-resolution circulation model to determine the likelihood that green crab larvae spawned in Willapa Bay, Washington could be retained by circulation and behavior long enough to reach maturity and resettle within the bay. A particle-tracking method (the {"}diffusive Lagrangian return map{"}) is presented that makes it possible to track the dispersion of hundreds of thousands of model larvae-each subject to three-dimensional advection, vertical turbulent diffusion, and imposed vertical migration behavior-over their full 30-50 days development time with modest computational resources. Larvae spawned in summer show significant retention (5-40{\%}) in the southern and western portions of the bay, including the Stackpole shoals near the mouth, the area most likely to be colonized by late-stage megalopae arriving from the coastal ocean. Larvae spawned in spring show much less retention throughout the bay because of (1) increased flushing caused by increased river input relative to summer conditions and (2) longer development times caused by lower water temperatures. The role of larval swimming behavior is secondary to hydrodynamics in setting these spatial and seasonal patterns of retention. ",
keywords = "biophysical modeling, circulation modeling, dispersion, green crab, individual-based modeling, invasive species, larval behavior, particle tracking, Willapa Bay",
author = "Banas, {Neil S.} and McDonald, {P. Sean} and Armstrong, {David A.}",
year = "2009",
doi = "10.1007/s12237-009-9175-7",
language = "English",
volume = "32",
pages = "893--905",
journal = "Estuaries and Coasts",
issn = "1559-2723",
number = "5",

}

Green crab larval retention in Willapa Bay, Washington : an intensive Lagrangian modeling approach. / Banas, Neil S.; McDonald, P. Sean; Armstrong, David A.

In: Estuaries and Coasts, Vol. 32, No. 5, 2009, p. 893-905.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Green crab larval retention in Willapa Bay, Washington

T2 - Estuaries and Coasts

AU - Banas, Neil S.

AU - McDonald, P. Sean

AU - Armstrong, David A.

PY - 2009

Y1 - 2009

N2 - The European green crab (Carcinus maenas) is invasive on the U.S. West Coast. This study uses a high-resolution circulation model to determine the likelihood that green crab larvae spawned in Willapa Bay, Washington could be retained by circulation and behavior long enough to reach maturity and resettle within the bay. A particle-tracking method (the "diffusive Lagrangian return map") is presented that makes it possible to track the dispersion of hundreds of thousands of model larvae-each subject to three-dimensional advection, vertical turbulent diffusion, and imposed vertical migration behavior-over their full 30-50 days development time with modest computational resources. Larvae spawned in summer show significant retention (5-40%) in the southern and western portions of the bay, including the Stackpole shoals near the mouth, the area most likely to be colonized by late-stage megalopae arriving from the coastal ocean. Larvae spawned in spring show much less retention throughout the bay because of (1) increased flushing caused by increased river input relative to summer conditions and (2) longer development times caused by lower water temperatures. The role of larval swimming behavior is secondary to hydrodynamics in setting these spatial and seasonal patterns of retention. 

AB - The European green crab (Carcinus maenas) is invasive on the U.S. West Coast. This study uses a high-resolution circulation model to determine the likelihood that green crab larvae spawned in Willapa Bay, Washington could be retained by circulation and behavior long enough to reach maturity and resettle within the bay. A particle-tracking method (the "diffusive Lagrangian return map") is presented that makes it possible to track the dispersion of hundreds of thousands of model larvae-each subject to three-dimensional advection, vertical turbulent diffusion, and imposed vertical migration behavior-over their full 30-50 days development time with modest computational resources. Larvae spawned in summer show significant retention (5-40%) in the southern and western portions of the bay, including the Stackpole shoals near the mouth, the area most likely to be colonized by late-stage megalopae arriving from the coastal ocean. Larvae spawned in spring show much less retention throughout the bay because of (1) increased flushing caused by increased river input relative to summer conditions and (2) longer development times caused by lower water temperatures. The role of larval swimming behavior is secondary to hydrodynamics in setting these spatial and seasonal patterns of retention. 

KW - biophysical modeling

KW - circulation modeling

KW - dispersion

KW - green crab

KW - individual-based modeling

KW - invasive species

KW - larval behavior

KW - particle tracking

KW - Willapa Bay

UR - http://www.scopus.com/inward/record.url?scp=70350066630&partnerID=8YFLogxK

U2 - 10.1007/s12237-009-9175-7

DO - 10.1007/s12237-009-9175-7

M3 - Article

VL - 32

SP - 893

EP - 905

JO - Estuaries and Coasts

JF - Estuaries and Coasts

SN - 1559-2723

IS - 5

ER -