Lampreys as ecosystem engineers: burrows of Eudontomyzon sp and their impact on physical, chemical, and microbial properties in freshwater substrates

被引：31

作者：

Boeker, Carolin ^{[1
]}

Geist, Juergen ^{[1
]}

机构：

[1] Tech Univ Munich, Sch Life Sci Weihenstephan, Aquat Syst Biol Unit, Muhlenweg 22, D-85354 Freising Weihenstephan, Germany

来源：

HYDROBIOLOGIA | 2016年 / 777卷 / 01期

关键词：

Bioturbation; Bacterial communities; Eudontomyzon sp; Ecosystem services; Redox potential; FRAGMENT-LENGTH-POLYMORPHISMS; RIBOSOMAL-RNA GENES; WEB-BASED TOOL; EPIDERMAL MUCUS; STREAM; CONSERVATION; COMMUNITIES; BIODIVERSITY; ORGANISMS; DIVERSITY;

D O I：

10.1007/s10750-016-2774-y

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The stream bed is considered as an important key habitat, yet there is limited knowledge on the effects of burrowing organisms and the resulting bioturbation on this habitat. In this study, a standardized laboratory experiment was used to compare the impact of burrowing lamprey larvae (Eudontomyzon sp.) on physical and chemical habitat properties as well as microbial community composition in freshwater substrates to a control without animals. We hypothesized that the burrowing activity of the lamprey larvae increases the influx of open water into interstitial areas with consequences for oxygen availability and thus for microbial community composition. The study revealed a strong increase in oxygen availability (oxygen concentration and redox potential) and nitrate concentrations in interstitial water in the lamprey treatment, indicative of an increased exchange with open water. Over time, a shift in microbial community composition was observed in the lamprey treatment, which was dominated by aerobe bacteria. Because the functional relevance of lamprey larvae for freshwater ecosystems is evidentially high, they can clearly be considered as ecosystem engineers. Their important ecosystem functions should be recognized in conservation and management plans.

引用

页码：171 / 181

页数：11

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