Re-use of shallow sediment patches by Pacific sand lance (Ammodytes hexapterus) in Barkley Sound, British Columbia, Canada

详细信息

下载全文

推荐本文 |

• 作者：1. Marine Protected Areas Research Group ; Geography Department ; University of Victoria ; Victoria ; BC ; Canada2. Parks Canada Agency ; Western and Northern Service Centre ; Vancouver ; BC ; Canada V6B 6B43. School of Fisheries and Ocean Sciences ; University of Alaska Fairbanks ; Fairbanks ; AK 99775鈥?220 ; USA
• 关键词：Ammodytes hexapterus – ; Distribution – ; Habitat re ; use – ; Occurrence – ; Pacific sand lance – ; Site fidelity – ; Temporal variability
• 刊名：Environmental Biology of Fishes
• 出版时间：September 2011
• 出版年：2011
• 期刊代码：8_03781909
• 类别：cp
• 卷：92
• 期：1
• 页码：1-12
• 数据来源：sp

摘要

We determined whether, during the summers of 2002–2004, young-of-the-year (YOY) Pacific sand lance (Ammodytes hexapterus) re-used patches of sediment in intertidal and shallow subtidal regions of Barkley Sound, British Columbia, Canada. We examined re-use weekly at a single sediment patch in 2003 and 2004 via mark-recapture methods, monthly by re-sampling 15 patches in 2002 and interannually by re-sampling 36 patches in all 3 years (2002–2004). The mark-recapture results showed that, within each summer, batch marked YOY sand lance re-used the same patch up to 8 weeks later. The re-sampling of 15 patches over 4 months in 2002 showed that YOY sand lance consistently occupied patches within a season. We found the greatest variability in sediment patch re-use at the interannual time scale with major fluctuations in occurrence and abundance during 2002–2004. The interannual variability in patch re-use is most likely linked to abundance rather than the local or regional environmental characteristics that we examined.