Skip to main content

Free Content Temporal and spatial scales of influence on nearshore fish settlement in the Southern California Bight

Download Article:
 Download
(PDF 1483.3603515625 kb)
 

Abstract:

Recruitment variation in marine populations is clearly affected by physical processes in the ocean. We therefore examined correlations between long-term, high-frequency data on fish settlement on artificial substrates and oceanographic processes operating at different spatial and temporal scales. We sought, for example, associations with processes occurring close in time and space to settlement events (suggesting processes affecting local delivery) or with those at particular spatial and temporal lags (suggesting influences on larval transport and survival or, at even greater time lags, on larval production). We used as response variables an 8-yr, biweekly record of settlement of three groups of fishes to sites in the Santa Barbara Channel, California, USA. Predictor variables were day-specific physical processes resolved to "local" scales and then binned and lagged to represent "regional" and "basin" spatial scales and more distant time horizons. We used linear models to assess the amount of variability in settlement associated with variation in processes at different spatial and temporal scales, representing different processes such as food availability or physical transport. We found that settlement is linearly associated with a combination of large-scale factors at long time lags, consistent with variation in production at sources and early larval survivorship, and with small-scale factors at short time lags, consistent with processes aiding delivery of competent individuals to suitable nearshore habitat. Species groups differ in the relative strength of these factors, potentially because of different biological attributes.

Document Type: Research Article

Publication date: 2010-04-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more