31 Works

The role of terrestrial productivity in regulating aquatic dissolved organic carbon concentrations in boreal catchments

Xudan Zhu, Liang Chen, Jukka Pumpanen, Anne Ojala, John Zobitz, Xuan Zhou, Hjalmar Laudon, Marjo Palviainen, Kimmo Neitola & Frank Berninger
The past decades have witnessed an increase in dissolved organic carbon (DOC) concentrations in the catchments of the Northern Hemisphere. Increases in terrestrial productivity may be a reason for the increases in DOC concentration. The aim of this study is to investigate the impacts of increased terrestrial productivity and changed hydrology following climate change on DOC concentrations. We tested and quantified the effects of gross primary production (GPP), ecosystem respiration (RE) and discharge on DOC...

The proximity of rapeseed fields influences levels of forest damage by red deer

Anders Jarnemo, Anna Widén, Johan Månsson & Annika M Felton
We investigated the relationship between the level of red deer Cervus elaphus bark stripping damage in 68 Norway spruce Picea abies stands, and the presence of rapeseed Brassica napus fields in the surroundings, hypothesising that damage increases with decreasing distance to rapeseed fields. We also considered other potentially influencing factors, such as supplemental feeding, alternative forage availability, and deer use of spruce stands as indexed by a pellet group count. Bark stripping rates were measured...

Leap-frog migration and residents: new migratory habits in Swedish Greylag geese

Lovisa Nilsson, Camilla Olsson, Johan Elmberg, Nils Bunnefeld, Niklas Liljebäck & Johan Månsson
Knowledge about intraspecific and individual variation in bird migration behavior is important to predict spatiotemporal distribution, patterns of phenology, breeding success and interactions with the surrounding environment (e.g., human livelihoods). Such variation is key to adaptive, evolutionary responses, i.e., how individuals respond spatiotemporally to the environment to maximize fitness. In this study we used GPS location data from one to three full annual cycles from 76 Greylag geese Anser anser to test the hypothesis that...

Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales

Katharine Keogan, Francis Daunt, Sarah Wanless, Richard Phillips, David Alvarez, Tycho Anker-Nilssen, Robert Barrett, Claus Bech, Peter Becker, Per-Arvid Berglund, Sandra Bouwhuis, Zofia Burr, Olivier Chastel, Signe Christensen-Dalsgaard, Sébastien Descamps, Tony Diamond, Kyle Elliott, Kjell Einar Erikstad, Mike Harris, Jonas Hentati-Sundberg, Martin Heubeck, Magdalene Langset, Svein Lorentsen, Heather Major, Mark Mallory … & Stephen Kress
Timing of breeding, an important driver of fitness in many populations, is widely studied in the context of global change, yet despite considerable efforts to identify environmental drivers of seabird nesting phenology, for most populations we lack evidence of strong drivers. Here we adopt an alternative approach, examining the degree to which different populations positively covary in their annual phenology to infer whether phenological responses to environmental drivers are likely to be (i) shared across...

Root traits along a subarctic tundra elevational gradient

Clydecia Spitzer
While root trait research has received increasing attention over the past two decades, the relationship between root traits and environmental factors remains elusive. At the same time, knowledge about these relationships is necessary if we are to understand plant community responses to environmental change. Here, we assessed the relationships between elevation (i.e., temperature) and fine root traits of plant species and communities. We focused on the sub-arctic tundra where plant communities are expected to experience...

Leveraging functional traits of cover crops to coordinate crop productivity and soil health

Chongzhe Zhang, Wenfeng Xue, Jingrong Xue, Jing Zhang, Lujie Qiu, Xiaoyun Chen, Feng Hu, Paul Kardol & Manqiang Liu
1. Plants act as ecosystem engineers playing fundamental roles in steering their surroundings, including soil abiotic and biotic conditions, soil organisms, and the complex soil food web they comprise. Trait-based approaches have been considered a ‘Holy Grail’ in linking plants to ecosystem functions, but the mechanistic relationship between plant traits and the soil food web as an indicator of soil health remains poorly understood. 2. We examined this relationship for 16 cover crop species differing...

Pink salmon distribution in Sweden: the calm before the storm?

Thomas Staveley & Ida Ahlbeck Bergendahl
Pink salmon distribution has recently expanded substantially across northern Europe. On the Swedish west coast, relatively few pink salmon have been observed to date, nonetheless a notable rise in 2021 (70 observations). However, with no national monitoring together with a ceased Atlantic salmon commercial fishery, there is little opportunity to understand the extent of the spread in this region. Here we present the current data and address the need for future monitoring and research in...

Experimentally increased snow depth affects High Arctic microarthropods inconsistently over two consecutive winters

Eveline Krab, Erik Lundin, Stephen Coulson, Ellen Dorrepaal & Elisabeth Cooper
Climate change induced alterations to winter conditions may affect decomposer organisms controlling the vast carbon stores in northern soils. Soil microarthropods are abundant decomposers in Arctic ecosystems affecting soil carbon release through their activities. We studied whether increased snow depth affected microarthropods, and if effects were consistent over two consecutive winters. We sampled Collembola and soil mites from a snow accumulation experiment at Svalbard in early summer and used soil microclimatic data to explore to...

Marginal imprint of human land use upon fire history in a mire-dominated boreal landscape of the Veps Highland, North-West Russia

Igor Drobyshev, Nina Ryzhkova, Mats Niklasson, Alexei Zhukov, Irma Mullonen, Guilherme Pinto & Alexander Kryshen'
Spatially explicit reconstructions of fire activity in European boreal forests are rare, limiting our understanding of factors driving vegetation dynamics in this part of the boreal domain. We have developed a spatially explicit dendrochronological reconstruction of a fire regime in a mire-dominated landscape of the Veps Nature Park (North-West Russia) over the 1580-2000 CE period. We dated 74 fire years using 164 fire-scarred living and dead Scots pine (Pinus sylvestris L.) trees collected on 31...

No evidence that conifer biochar impacts soil functioning by serving as microbial refugia in boreal soils

Nadia I. Maaroufi, Melissa R.A. Pingree, Paul Kardol, Marie-Charlotte Nilsson, David A. Wardle & Michael J. Gundale
It is well established that application of biochar to soils can promote soil fertility, which ultimately may enhance plant growth. While many mechanisms have been proposed to explain this, one specific mechanism, the “microbial refugia hypothesis” suggests that biochar may provide physical protection for soil microbe from soil micro-fauna that otherwise exert top-down control on microbial biomass and activity. We tested the microbial refugia hypothesis by incubating two boreal soils with and without biochar derived...

Data on bird abundance in urban woodlands in 32 Swedish cities

Marcus Hedblom, Bo Söderström & William Sidemo-Holm
The expansion of urban areas is increasingly contributing to biodiversity declines. Several studies have analyzed the effect of increasing urbanization on bird diversity, but few have differentiated effects of urban landscapes (matrix) from changes in focal habitat quality at multiple spatial scales. In this study we analyzed the effect of urbanization on bird communities in individual (local scale) and across multiple (regional scale) cities while controlling for the quality of sampled natural habitats. We conducted...

No Allee effect detected during the natural recolonization by a large carnivore despite low growth rate

Henrik Andren, Heather Hemmingmoore, Malin Aronsson, Mikael Åkesson & Jens Persson
Eurasian lynx (Lynx lynx) have recently naturally recolonized southern Sweden. The first documented reproduction of lynx in recent times occurred in 2003, and the population increased from two to 48 family groups (the unit of measurement in Swedish monitoring) during its first 18 years (2003/04 – 2020/21). We did not detect any Allee effect, i.e., lower growth rate at low population density, during the recolonization of southern Sweden, although our population simulations revealed a non-negligible...

Imprints of latitude, host taxon and decay stage on fungus-associated arthropod communities

Janne Koskinen, Nerea Abrego, Eero Vesterinen, Torsti Schulz, Tomas Roslin & Tommi Nyman
Interactions among fungi and insects involve hundreds of thousands of species. While insect communities on plants have formed some of the classic model systems in ecology, fungus-based communities and the forces structuring them remain poorly studied by comparison. We characterize the arthropod communities associated with fruiting bodies of eight mycorrhizal basidiomycete fungus species from three different orders along a 1200-km latitudinal gradient in northern Europe. We hypothesized that—matching the pattern seen for most insect taxa...

Multiple drivers of large‐scale lichen decline in boreal forest canopies

Per-Anders Esseen, Magnus Ekström, Anton Grafström, Bengt Gunnar Jonsson, Kristin Palmqvist, Bertil Westerlund & Göran Ståhl
Thin, hair-like lichens (Alectoria, Bryoria, Usnea) form conspicuous epiphyte communities across the boreal biome. These poikilohydric organisms provide important ecosystem functions and are useful indicators of global change. We analyse how environmental drivers influence changes in occurrence and length of these lichens on Norway spruce (Picea abies) over 10 years in managed forests in Sweden using data from >6000 trees. Alectoria and Usnea showed strong declines in southern-central regions, whereas Bryoria declined in northern regions....

Data from: Environmental controls on African herbivore responses to landscapes of fear

Andrew Davies, Joris Cromsigt, Craig Tambling, Elizabeth Le Roux, Nicholas Vaughn, Dave Druce, David Marneweck & Gregory Asner
Herbivores balance forage acquisition with the need to avoid predation, often leading to tradeoffs between forgoing resources to avoid areas of high predation risk, or tolerating increased risk in exchange for improved forage. The outcome of these decisions is likely to change with varying resource levels, with herbivores altering their response to predation risk across heterogeneous landscapes. Such contrasting responses will alter the strength of non-consumptive predation effects, but are poorly understood in multiple- predator/multiple-prey...

Home range sizes of red deer in contrasting landscapes and implications for management

Camilla Wikenros, Anders Jarnemo & Lovisa Nilsson
Knowledge about deer spatial use is essential for damage mitigation and management coordination. Here we assess annual and seasonal home range sizes for red deer in Sweden, based on data from GPS-marked deer in two regions with different management systems and contrasting landscapes. We compare our findings with reviewed data on European red deer (Cervus elaphus) home range sizes in Europe. We found that female annual home ranges (95% kernels) were 2.7 times larger in...

Trait coordination in boreal mosses reveals a bryophyte economics spectrum

Roger Grau-Andrés, Paul Kardol & Michael Gundale
1. The study of plant trait spectra and their association with trade-offs in resource use strategy has greatly advanced our understanding of vascular plant function, yet trait spectra remain poorly studied in bryophytes, particularly outside of the Sphagnum genus. Here, we measured 25 traits related to carbon, nutrient, and water conservation in 60 moss canopies (each dominated by one of 15 moss species) across diverse boreal forest habitats, and used bi-variate correlations and multi-variate analyses...

Circum-Arctic distribution of chemical anti-herbivore compounds arctic shrubs

Elin Lindén, Mariska Te Beest, Ilka Abreu, Thomas Moritz, Maja Sundqvist, Isabel C Barrio, Julia Boike, John Bryant, Kari Anne Bråthen, Agata Buchwal, Guillermo Bueno, Alain Cuerrier, Dagmar Egelkraut, Bruce Forbes, Martin Hallinger, Monique Heijmans, Luise Hermanutz, David S Hik, Annika Hofgaard, Milena Holmgren, Diane C Huebner, Toke Hoye, Ingibjörg Jónsdóttir, Elina Kaarlejärvi, Emilie Kissler … & Johan Olofsson
Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top-down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the circum-Arctic variation in defence compounds is explained by taxa or defence functional groups (resinous/non-resinous). We measured circum-Arctic...

Pollinators, pests and yield – multiple trade-offs from insecticide use in a mass-flowering crop

Jessica Knapp, Adam Bates, Ove Jonsson, Björn Klatt, Theresia Krausl, Ullrika Sahlin, Glenn Svensson &
Multiple trade-offs are likely to occur between pesticide use, pollinators and yield (via crop flowers) in pollinator-dependent, mass-flowering crops (MFCs), causing potential conflict between conservation and agronomic goals. To date, no studies have looked at both outcomes within the same system, meaning ‘win-win solutions’ for pollinators and yield can only be inferred. Here, we outline a new framework to explore these trade-offs, using red clover (Trifolium pratense) grown for seed production as an example. Specifically,...

Generality of cryptic dietary niche differentiation in diverse large-herbivore assemblages

Robert Pringle, Johan Pansu, Matthew Hutchinson, T. Michael Anderson, Mariska Te Beest, Colleen Begg, Keith Begg, Aurelie Bonin, Lackson Chama, Simon Chamaillé-Jammes, Eric Coissac, Joris Cromsigt, Margaret Demmel, Jason Donaldson, Jennifer Guyton, Christina Hansen, Christopher Imakando, Azwad Iqbal, Davis Kalima, Graham Kerley, Samson Kurukura, Marietjie Landman, Ryan Long, Isaack Munuo, Ciara Nutter … & Tyler Kartzinel
Ecological niche differences are necessary for stable species coexistence but are often difficult to discern. Models of dietary niche differentiation in large mammalian herbivores invoke the quality, quantity, and spatiotemporal distribution of plant tissues and growth-forms but are agnostic towards food-plant species identity. Empirical support for these models is variable, suggesting that additional mechanisms of resource partitioning may be important in sustaining large-herbivore diversity in African savannas. We used DNA metabarcoding to conduct a taxonomically...

A genome-wide test for paternal indirect genetic effects on lifespan in Drosophila melanogaster

Vinesh N Shenoi, Martin I Brengdahl, Jaime L Grace, Björn Eriksson, Patrik Rydén & Urban Friberg
Exposing sires to various environmental manipulations has demonstrated that paternal effects can be non-trivial also in species where male investment in offspring is almost exclusively limited to sperm. Whether paternal effects also have a genetic component (i.e. paternal indirect genetic effects - PIGEs) in such species is however largely unknown, primarily because of methodological difficulties separating indirect from direct effects of genes. PIGEs may nevertheless be important, since they have the capacity to contribute to...

Rebuilding green infrastructure in boreal production forest given future global wood demand

Helen Moor, Jeannette Eggers, Henna Fabritius & Tord Snäll
Global policy for future biodiversity conservation is ultimately implemented at landscape and local scales. In parallel, green infrastructure (GI) planning needs to account for socio-economic dynamics at national and global scales. Progress towards policy goals must, in turn, be evaluated at the landscape scale. Evaluation tools are often environmental quality objectives (EQO) indicators. We present three management scenarios for a 100,000 hectare boreal forest landscape in Sweden in the coming 100 years. The scenarios optimize...

Data from: Scale-dependence of landscape heterogeneity effects on plant invasions

Dorota Kotowska, Tomas Pärt, Piotr Skórka, Alistair G. Auffret & Michał Żmihorski
Invasive alien species are amongst the most concerning threats to native biodiversity worldwide, and the level of landscape heterogeneity is considered to affect spatial patterns of their occurrence and spread. However, as previous studies on these associations report contrasting results, the role of landscape heterogeneity on its susceptibility to invasions remains poorly understood. Landscape heterogeneity is usually described by two measures: configuration and composition. Both measures may differently affect invasive species and these impacts may...

Ericaceous dwarf shrubs contribute a significant but drought-sensitive fraction of soil respiration in a boreal pine forest

Louis Mielke
Boreal forests often have a dense understory of ericaceous dwarf shrubs with ecological adaptations that contrast those of the canopy-forming trees. It is therefore important to quantify contributions by understory shrubs to ecosystem processes and disentangle shrub- and tree-driven responses, and their interactions, to climatic factors. We quantified soil respiration driven by the pine canopy and the ericaceous shrub understory over three years, using a factorial pine root-exclusion and shrub-removal experiment in a mature Pinus...

Genomics of humic adaptation in Eurasian perch (Perca fluviatilis): SNP genotypes of 32 perch individuals, supplementary figures and tables

Mikhail Ozerov, Kristina Noreikiene, Siim Kahar, Magnus Huss, Ari Huusko, Toomas Kõiv, Margot Sepp, María López, Anna Gårdmark, Riho Gross & Anti Vasemägi
Extreme environments are inhospitable to the majority of species, but some organisms are able to survive in such hostile conditions due to evolutionary adaptations. For example, modern bony fishes have colonized various aquatic environments, including perpetually dark, hypoxic, hypersaline and toxic habitats. Eurasian perch (Perca fluviatilis) is among the few fish species of northern latitudes that is able to live in very acidic humic lakes. Such lakes represent almost “nocturnal” environments; they contain high levels...

Registration Year

  • 2022

Resource Types

  • Dataset


  • Swedish University of Agricultural Sciences
  • Umeå University
  • University of Eastern Finland
  • University of Helsinki
  • Estonian University of Life Sciences
  • UiT The Arctic University of Norway
  • Lund University
  • Polish Academy of Sciences
  • University of Edinburgh
  • British Antarctic Survey