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THE STATE OF THE CALIFORNIA CURRENT, 2006-2007: REGIONAL AND LOCAL PROCESSES DOMINATE

机译:2006-2007年加利福尼亚州现状:区域和本地流程占主导地位

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摘要

The state of the California Current System (CCS) between Oregon and Baja California is summarized in this report, covering spring 2006 to spring 2007. Observations reported here are based on contributions from various ocean observing programs along the West Coast of North America. Basin-scale indicators were variable or neutral over the last year. This indeterminate forcing was reflected in conditions in the CCS where no coherent patterns emerged, i.e., no single "state" could be ascribed to the system. Rather, regional or local processes dominated observed patterns. Similar to last year, delayed upwelling off Oregon and central California dramatically affected higher trophic levels: euphausiid recruitment was delayed and as a likely consequence seabird productivity off Central California was extremely depressed. For example, Cassin's auklet had a complete reproductive failure, similar to 2006. Observations during the spring of 2007 demonstrate that these patterns were ephemeral since upwelling was normal and seabird productivity improved. Off southern and Baja California, upwelling-favorable winds were also weak or delayed during 2006, but biological consequences appear to have been relatively minor.
机译:本报告概述了俄勒冈州和下加利福尼亚州之间的加利福尼亚洋流系统(CCS)的状态,涵盖2006年春季至2007年春季。此处报告的观测结果基于北美西海岸各种海洋观测计划的贡献。在过去的一年中,流域规模指标是可变的或中性的。这种不确定的强迫反映在CCS中的条件下,其中没有出现连贯的模式,即,系统没有任何单一的“状态”。相反,区域或地方进程主导了观察到的模式。与去年相似,俄勒冈州和加利福尼亚州中部的延迟上升戏剧性地影响了较高的营养水平:延寿虾的招募工作被延迟,并且可能导致加利福尼亚中部地区海鸟的生产力极度下降。例如,卡辛(Cassin)的红脚uk完全繁殖失败,与2006年相似。2007年春季的观察表明,这些模式是短暂的,因为上升是正常的,海鸟的生产力有所提高。在南部和下加利福尼亚州,2006年上升气流偏弱或延迟,但生物学后果似乎相对较小。

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