7 Works

Data from: Inferring the effects of potential dispersal routes on the metacommunity structure of stream insects: as the crow flies, as the fish swims or as the fox runs?

Olli-Matti Kärnä, Mira Grönroos, Harri Antikainen, Jan Hjort, Jari Ilmonen, Lauri Paasivirta & Jani Heino
1. Metacommunity research relies largely on proxies for inferring the effect of dispersal on local community structure. Overland and watercourse distances have been typically used as such proxies. A good proxy for dispersal should, however, take into account more complex landscape features that can affect an organism's movement and dispersal. The cost distance approach does just that, allowing determining the path of least resistance across a landscape. 2. Here, we examined the distance decay of...

Data from: Human disturbance increases functional but not structural variability of stream fungal communities

Mikko Tolkkinen, Heikki Mykrä, Annamari M. Markkola & Timo Muotka
Temporal stability of ecosystem functions is often regulated by the same environmental factors that also shape diversity. Therefore, species diversity, ecosystem functions and their environmental regulators should be considered together to understand and predict the consequences of anthropogenic disturbances on ecosystems. We studied the influence of land-use disturbance (agriculture) and a natural stressor (low pH due to specific geology) on the temporal variability (variability among successive years) of fungal decomposer communities and leaf decomposition rates...

Data from: Determinants of parasitoid communities of willow-galling sawflies: habitat overrides physiology, host plant, and space

Tommi Nyman, Sanna A. Leppänen, Gergely Várkonyi, Mark R. Shaw, Reijo Koivisto, Trond Elling Barstad, Veli Vikberg & Heikki Roininen
Studies on the determinants of plant–herbivore and herbivore–parasitoid associations provide important insights into the origin and maintenance of global and local species richness. If parasitoids are specialists on herbivore niches rather than on herbivore taxa, then alternating escape of herbivores into novel niches and delayed resource tracking by parasitoids could fuel diversification at both trophic levels. We used DNA barcoding to identify parasitoids that attack larvae of seven Pontania sawfly species that induce leaf galls...

Data from: What data to use for forest conservation planning? A comparison of coarse open and detailed proprietary forest inventory data in Finland

Joona A. Lehtomäki, Sakari Tuominen, Tuuli Toivonen, Antti Leinonen & Joona Lehtomäki
The boreal region is facing intensifying resource extraction pressure, but the lack of comprehensive biodiversity data makes operative forest conservation planning difficult. Many countries have implemented forest inventory schemes and are making extensive and up-to-date forest databases increasingly available. Some of the more detailed inventory databases, however, remain proprietary and unavailable for conservation planning. Here, we investigate how well different open and proprietary forest inventory data sets suit the purpose of conservation prioritization in Finland....

Data from: Contrasting the roles of section length and instream habitat enhancement for river restoration success: a field study on 20 European restoration projects

Daniel Hering, Jukka Aroviita, Annette Baattrup-Pedersen, Karel Brabec, Tom Buijse, Frauke Ecke, Nikolai Friberg, Marek Gielczewski, Kathrin Januschke, Jan Köhler, Benjamin Kupilas, Armin W. Lorenz, Susanne Muhar, Amael Paillex, Michaela Poppe, Torsten Schmidt, Stefan Schmutz, Jan Vermaat, Piet F. M. Verdonschot, Ralf C. M. Verdonschot, Jochem Kail & Christian Wolter
1. Restoration of river hydromorphology often has limited detected effects on river biota. One frequently discussed reason is that the restored river length is insufficient to allow populations to develop and give the room for geomorphologic processes to occur. 2. We investigated ten pairs of restored river sections of which one was a large project involving a long, intensively restored river section and one represented a smaller restoration effort. The restoration effect was quantified by...

Data from: Establishing a community-wide DNA barcode library as a new tool for arctic research

H. Wirta, G. Várkonyi, C. Rasmussen, R. Kaartinen, N. M. Schmidt, P. D. N. Hebert, M. Barták, G. Blagoev, H. Disney, S. Ertl, P. Gjelstrup, D. J. Gwiazdowicz, L. Huldén, J. Ilmonen, J. Jakovlev, M. Jaschhof, J. Kahanpää, T. Kankaanpää, P. H. Krogh, R. Labbee, C. Lettner, V. Michelsen, S. A. Nielsen, T. R. Nielsen, L. Paasivirta … & T. Roslin
DNA sequences offer powerful tools for describing the members and interactions of natural communities. In this study, we establish the to-date most comprehensive library of DNA barcodes for a terrestrial site, including all known macroscopic animals and vascular plants of an intensively studied area of the High Arctic, the Zackenberg Valley in Northeast Greenland. To demonstrate its utility, we apply the library to identify nearly 20 000 arthropod individuals from two Malaise traps, each operated...

Data from: Rehabilitating the cyanobacteria – niche partitioning, resource use efficiency, and phytoplankton community structure during diazotrophic cyanobacterial blooms

Kalle Olli, Riina Klais & Timo Tamminen
1. Blooms of nitrogen-fixing cyanobacteria are recurrent phenomena in marine and freshwater habitats, and their supplying role in aquatic biogeochemical cycles is generally considered vital. The objective of this study is to analyze if an increasing proportion of nitrogen-fixing cyanobacteria affects (i) the composition of the non-diazotrophic component of ambient phytoplankton communities, and (ii) resource use efficiency (RUE; ratio of chl a to total nutrients) – an important ecosystem function. We hypothesize that diazotrophs increase...

Registration Year

  • 2015
    7

Resource Types

  • Dataset
    7

Affiliations

  • Finnish Environment Institute
    7
  • University of Eastern Finland
    2
  • Aarhus University
    2
  • Swedish University of Agricultural Sciences
    2
  • University of Oulu
    2
  • University of Helsinki
    2
  • VU University Amsterdam
    1
  • National Museums Scotland
    1
  • University of Cambridge
    1
  • Roskilde University
    1