The dark side of rocks: An underestimated high‐quality food resource in river ecosystems
نویسندگان
چکیده
Algae are generally a high-quality diet source because they provide essential compounds to aquatic consumers. In forested stream ecosystems, the availability of algae is low compared terrestrial organic matter, which may constrain dietary transfer However, there could be other overlooked resource pools that consumers in river ecosystems. We conducted field study along subalpine continuum Austria identify nutritional role ‘hidden’ food for consumers; biofilms growing on underside rocks (dark biofilms). Dark and light (i.e. upper surface rocks) invertebrates were collected, their fatty acid (FA) composition was analysed. Compared with biofilms, dark contained greater proportions bacterial FA, long-chain saturated FA (biomarkers plants) oleic (18:1ω9; fungal biomarker), but lower proportion algal especially omega-3 polyunsaturated (ω3 PUFA). The ω3 PUFA strongly correlated biofilms. Furthermore, overall profiles significantly associated invertebrate profiles. Strong correlations also observed between eicosapentaenoic (EPA, 20:5ω3). Synthesis. This demonstrates pool ecosystems often overlooked. Similar physiologically important invertebrates. these resources threatened by increasing human disturbances Future research required better understand how quality both changes response disturbance, this affects energy trophic consumers, including fish humans.
منابع مشابه
Equilibrium Innovation Ecosystems: The Dark Side of Collaborating with Complementors
The recent years have exhibited a burst in the amount of collaborative activities among rms selling complementary products. This paper aims at providing a rationale for such a large extent of collaboration ties among complementors. To this end, we analyze a game in which the two producers of a certain component have the possibility to form pairwise collaboration ties with each of the two produ...
متن کاملO Brave New World: The Dark Side of Cyberspace
This article focuses on some of the negative aspects of cyberspace andcyberculture. First, it offers an examination of the impact of our use ofsocial media, and Facebook in particular, on our psyches, pointing out thatusers of social media can be thought of as audiences. These audiencesand information about them can be sold to marketers and advertisers.Next, it offers a case study of a widespre...
متن کاملan investigation of the types of text reduction in subtitling: a case study of the persian film gilaneh with english subtitles
چکیده ندارد.
15 صفحه اولthe effect of the record infancy in crimilly acts of guilties (in karaj city)
چکیده یکی از مهمترین دغدغه های بزرگ جوامع بشری، از دیر باز تا کنون که ذهن پژوهشگران و متخصصان بهداشت روانی و اجتماعی و دولتها رابه خود مشغول داشته، مسأله ی بزهکاری می باشد. شناخت کامل پدیده ی بزهکاری و بزهکار، علل وعوامل سقوط یک انسان، چگونگی درمان وی و درنهایت پیشگیری ازبزهکاری ودریک کلام سالم سازی یک جامعه، رسالت عظیم، انسانی ومقدسی می باشد که با بررسی شخصیت مجرم یعنی[ انسانی که تحت شرای...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Ecology
سال: 2021
ISSN: ['1365-2745', '0022-0477']
DOI: https://doi.org/10.1111/1365-2745.13647