气候变化领域集成服务门户(CCPortal): Phytoplankton abundance series (1989-2008) off A Coruña (Spain)

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DOI	https://doi.org/10.1594/PANGAEA.855901
	Phytoplankton abundance series (1989-2008) off A Coruña (Spain)
	Bode; Antonio; Estévez; M Graciela; Varela; Manuel; Vilar; José A
发布日期	2015-12-15
数据集类型	dataset
英文简介	Phytoplankton is a sentinel of marine ecosystem change. Composed by many species with different life-history strategies, it rapidly responds to environment changes. An analysis of the abundance of 54 phytoplankton species in Galicia (NW Spain) between 1989 and 2008 to determine the main components of temporal variability in relation to climate and upwelling showed that most of this variability was stochastic, as seasonality and long term trends contributed to relatively small fractions of the series. In general, trends appeared as non linear, and species clustered in 4 groups according to the trend pattern but there was no defined pattern for diatoms, dinoflagellates or other groups. While, in general, total abundance increased, no clear trend was found for 23 species, 14 species decreased, 4 species increased during the early 1990s, and only 13 species showed a general increase through the series. In contrast, series of local environmental conditions (temperature, stratification, nutrients) and climate-related variables (atmospheric pressure indices, upwelling winds) showed a high fraction of their variability in deterministic seasonality and trends. As a result, each species responded independently to environmental and climate variability, measured by generalized additive models. Most species showed a positive relationship with nutrient concentrations but only a few showed a direct relationship with stratification and upwelling. Climate variables had only measurable effects on some species but no common response emerged. Because its adaptation to frequent disturbances, phytoplankton communities in upwelling ecosystems appear less sensitive to changes in regional climate than other communities characterized by short and well defined productive periods.
空间范围	Latitude: 43.421660 * Longitude: -8.436660
时间范围	1989-05-03T00:00:00 - 2008-11-05T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/216936
推荐引用方式 GB/T 7714	Bode,Antonio,Estévez,et al. Phytoplankton abundance series (1989-2008) off A Coruña (Spain).2015-12-15.https://doi.org/10.1594/PANGAEA.855901.