dc.contributor.author | Vesterinen, Jussi | |
dc.contributor.author | Syväranta, Jari | |
dc.contributor.author | Devlin, Shawn | |
dc.contributor.author | Jones, Roger | |
dc.date.accessioned | 2016-11-18T07:48:22Z | |
dc.date.available | 2017-07-28T21:45:06Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Vesterinen, J., Syväranta, J., Devlin, S., & Jones, R. (2016). Periphyton support for littoral secondary production in a highly humic boreal lake. <i>Freshwater Science</i>, <i>35</i>(4), 1235-1247. <a href="https://doi.org/10.1086/689032" target="_blank">https://doi.org/10.1086/689032</a> | |
dc.identifier.other | CONVID_26245543 | |
dc.identifier.other | TUTKAID_71340 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/51913 | |
dc.description.abstract | Steep stratification and poor light penetration in highly humic lakes typically restrict oxygenated littoral
areas to narrow lake margins. However, in some instances, surrounding floating vegetation mats can sustain
highly productive periphyton and more diverse invertebrate communities than pelagic areas. Little is known
about how these littoral food webs function or the extent to which the pelagic and littoral food webs are coupled.
We added 15N-labeled ammonium nitrate to the floating moss mat surrounding the littoral zone of Mekkojärvi,
a small highly humic and fishless lake in southern Finland. Our goal was to increase the δ15N values of
periphyton to investigate the diets of littoral invertebrates and possible pelagic–littoral coupling in the lake. We
divided the lake in 2 with a plastic curtain and added European Perch (Perca fluviatilis) to 1 basin while the other
remained fishless. δ15N of periphyton and most littoral invertebrates increased well above the natural abundance
levels. δ15N of pelagic Daphnia generally did not increase, except for a sudden and transitory increase in the basin
where fish were introduced. Only one perch of the 33 recaptured following their introduction showed clearly
increased δ15N. The lowest δ13C values were found in pelagic invertebrates. Most littoral invertebrates had values
closer to those of periphyton, which clearly contributed significantly to the diets of most littoral invertebrate
groups and was an important basal resource in the littoral food web. Chironomids and ephemeropterans had
surprisingly low δ13C values, which may reflect inclusion in their diets of highly 13C-depleted methane-oxidizing
bacteria, which were known to contribute to the diets of Daphnia in the lake. Our results indicate that the pelagic
and littoral habitats are not strongly coupled in the absence of fish but that zooplanktivorous fish may increase
coupling by driving zooplankton into the littoral zone to seek refuge from predation. | |
dc.language.iso | eng | |
dc.publisher | Society for Freshwater Science ; University of Chicago Press | |
dc.relation.ispartofseries | Freshwater Science | |
dc.subject.other | littoral invertebrates | |
dc.subject.other | benthic algae | |
dc.subject.other | methane-oxidizing bacteria | |
dc.subject.other | stable-isotope analysis | |
dc.subject.other | isotope additions | |
dc.title | Periphyton support for littoral secondary production in a highly humic boreal lake | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-201611174650 | |
dc.contributor.laitos | Bio- ja ympäristötieteiden laitos | fi |
dc.contributor.laitos | Department of Biological and Environmental Science | en |
dc.contributor.oppiaine | Akvaattiset tieteet | fi |
dc.contributor.oppiaine | Aquatic Sciences | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.date.updated | 2016-11-17T16:15:09Z | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.format.pagerange | 1235-1247 | |
dc.relation.issn | 2161-9549 | |
dc.relation.numberinseries | 4 | |
dc.relation.volume | 35 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2016 by The Society for Freshwater Science. Published in this repository with the kind permission of the publisher. | |
dc.rights.accesslevel | openAccess | fi |
dc.relation.doi | 10.1086/689032 | |
dc.type.okm | A1 | |