ISSN:
1573-5117
Keywords:
macroinvertebrate community
;
spatial heterogeneity
;
stone colonization
;
substrate effect
;
salt wedge
;
Ebro River
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract We examine the macroinvertebrate community composition and dynamics in the last 60 km of the Ebro river (NE Spain). Different sampling methods (individual stones, Surber, kick samplers and artificial substrate) were used depending on the characteristics of the sites chosen (substrate, current velocity, saline influence). The high nutrient content and the abundance of UFPOM is the origin of a high density in stones although no clear pattern exists between stone surface area and density or species richness. The high spatial heterogeneity and moderate disturbance intensity and frequency because of river regulation explains the relatively rich macroinvertebrate community and the low temporal changes in the community.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00008498
