THE DETRITIC COMPARTMENT IN A POSIDONIA-OCEANICA MEADOW - LITTER FEATURES, DECOMPOSITION RATES, AND MINERAL STOCKS

被引:71
作者
ROMERO, J [1 ]
PERGENT, G [1 ]
PERGENTMARTINI, C [1 ]
MATEO, MA [1 ]
REGNIER, C [1 ]
机构
[1] UNIV AIX MARSEILLE 2, FAC SCI LUMINY, LAB BIOL MARINE & ECOL BENTHOS, F-13288 MARSEILLE 9, FRANCE
来源
MARINE ECOLOGY-PUBBLICAZIONI DELLA STAZIONE ZOOLOGICA DI NAPOLI I | 1992年 / 13卷 / 01期
关键词
SEAGRASS; POSIDONIA-OCEANICA; DETRITUS; DECOMPOSITION; MINERAL STOCKS; NUTRIENT CYCLING;
D O I
10.1111/j.1439-0485.1992.tb00341.x
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
The ecosystem associated to the Mediterranean seagrass Posidonia oceanica shows a clear distinction in two subcompartments regarding turnover time: aboveground and belowground. Aboveground parts (leaves) are highly dynamic, and most of the leaf material is decomposed or exported in less than one year, representing a net loss of nutrients. In contrast, belowground biomass (roots and rhizomes) has a turnover time of the order of centuries, with a consequent accumulation of organic matter in the sediment. The accumulation rates for the single elements rank in the order C>N>P. This ecosystem may be considered as a sink for biogenic elements.
引用
收藏
页码:69 / 83
页数:15
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