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Viimeksi tallennetut

  • Long-Term Trends of Adult Survival and Productivity in European Songbirds : Role of Migration Strategy and Temperature Gradient Within Species' Ranges
    Nousiainen, Inari; Lehikoinen, Aleksi; Piha, Markus; Lehikoinen, Petteri; Robinson, Robert; Arizaga, Juan; Cepák, Jaroslav; Fiedler, Wolfgang; Geiter, Olaf; Henshaw, Ian; Herrmann, Christof; Illa, Marc; van der Jeugd, Henk P.; Leal, Arantza; Lovászi, Péter; Pirrello, Simone; Bosco, Laura
    Diversity and distributions : 5 (Wiley-Blackwell, 2026)
    Aim: To understand species population ecology, we need to study how trends of demographic drivers change over time and space, especially so under current rapid climate change. However, knowledge on long-term trends of survival and productivity, especially using multiple species over large spatial scales, is scarce. Here, we examined the long-term trends of adult survival and productivity of European songbirds, their relation to temperature gradients within species' ranges, and different traits across multiple species over large spatial scales. Location: Ten countries in Europe. Time Period: 2001–2021. Major Taxa Studied: 28 songbird species. Methods: We used bird ringing data from the European Constant Effort Ringing scheme (CES), with 1.2 million captures of birds. We investigated the long-term trends of adult survival and productivity in relation to temperature gradients within species' ranges. We also tested differences in the long-term trends of demographic measures in relation to species' migratory strategies (long-distance migrants vs. short-distance migrants and residents) and long-term population trends. Results: There was no apparent major change in the long-term trends of either adult survival or productivity, and they did not show differences along the range gradient. Long-term trends of productivity differed between migratory strategies: long-distance migrants showed more negative trends in productivity than short-distance migrants and residents, while survival trends were similar between the two groups. Trends in both adult survival and productivity had equal positive connections with the population trends of songbirds.Main ConclusionsThe difference in long-term trends of productivity between migratory strategies highlights the importance of different conservation efforts for long-distance migrants compared to short-distance or resident birds.
  • High annual-cycle repeatability suggests low flexibility to environmental changes in a near-threatened migratory shorebird
    Schwemmer, Philipp; Donnez, Marie; Mercker, Moritz; Garthe, Stefan; Boschert, Martin; Düttmann, Heinz; Elts, Jaanus; Fartmann, Thomas; Fiedler, Wolfgang; Jiguet, Frédéric; Kämpfer, Steffen; Korniluk, Michał; Kruckenberg, Helmut; Krupiński, Dominik; Marja, Riho; Piha, Markus; Rousseau, Pierre; Rupprecht, Verena; Bocher, Pierrick
    Communications biology : 1 (Springer Nature, 2026)
    Migratory species often repeat spatio-temporal patterns within their annual cycle. Although this may help to promote knowledge about local features and site quality, stereotyped behaviours may also create an ecological trap by preventing the flexibility required to adjust to environmental changes. Using a long-term international dataset, this study assesses 24 spatial and temporal parameters describing the repeatability of the entire migratory cycle in 94 individuals of the migratory near-threatened Eurasian curlew (Numenius arquata) that were tracked for up to 7 consecutive years using high-resolution GPS tags. Twenty-two parameters show significant repeatability, with the highest repeatability for use of the same breeding and wintering sites, indicating consistent faithfulness. All migration and stopover parameters during spring migration are also significantly repeatable, with lower repeatability for autumn migration, likely related to variable breeding success. The location of migration routes varies between consecutive years, but intra-individual similarity is significantly greater than inter-individual similarity. While the potential of adaptations to long-term environmental changes needs further studies (preferably including several cohorts of individuals) there are indications of a potentially maladaptive behaviour to short-term changes that should be carefully observed by site managers to conserve this near-threatened species.
  • Differing abundance changes in birds and butterflies in boreal agricultural landscapes
    Arkkila, Sarella; Bosco, Laura; Heliölä, Janne; Kuussaari, Mikko; Lehikoinen, Aleksi; Piha, Markus; Seimola, Tuomas; Tiainen, Juha; Ekroos, Johan
    Biodiversity and conservation : 2 (Springer Nature, 2026)
    Biodiversity is declining at an alarming rate, particularly in agricultural landscapes. Long-term monitoring data indicate that farmland birds and butterflies have declined, yet we lack an understanding of potential drivers of abundance change of these indicator taxa over space and time. Here, we studied abundance changes of birds and butterflies in Finnish farmlands from 2001 to 2023 at local and regional scales, sampled in the same study locations and regions. Additionally, we analysed if the abundance change is correlated between the two groups (taxa) at a site-level, and if changes in abundance over time can be attributed to comparable ecological, species-specific traits, reflecting variation in species temperature index, body size, and habitat breadth. We found that butterflies significantly declined in their abundance, which was not the case for birds. Additionally, abundance changes between geographical regions differed for both taxa, indicating that similar regional drivers are affecting species of both taxa. Species-specific traits did not explain varying abundance changes of both taxa. These results indicate that abundance changes are driven by taxon- and species-specific factors, rather than by more broadly comparable, ecological characteristics. Our results highlight the importance of utilising several different indicator species, representing different taxonomic groups, when assessing the implications of agricultural practices on biodiversity.
  • Latitude, habitat and reproductive outcome shape breeding space use in common redshanks : First insights from GPS tracking across European landscapes
    Allain, Jimmy; Monnet, Anne-Christine; Jiguet, Frédéric; Deschamps, Julie; Piha, Markus; Seimola, Tuomas; Procházka, Petr; Rey, Fanny; Rousseau, Pierre; Jomat, Loic; Lemke, Hilger; Obracay, Thorsten; Belting, Heinrich; Belo, João; Schwemmer, Philipp; Tijsen, Wim; Bocher, Pierrick
    Global Ecology and Conservation (Elsevier, 2026)
    The degradation and loss of breeding habitats due to agricultural intensification is driving severe declines in European bird populations. Understanding how breeding phenology and habitat use vary across a species’ breeding distribution is essential for effective conservation. Here, we investigate how phenology and space use vary across latitude and habitat types of the common redshank (Tringa totanus) with breeding sites distributed across Europe, encompassing coastal, bog and agricultural landscapes. We used high-resolution GPS telemetry to track 85 adult redshanks throughout the breeding season. We quantified timing of reproductive stages, local movement behaviour, home-range size and habitat use during incubation and chick-rearing, and assessed how these parameters varied with latitude, habitat type and reproductive outcome. Spring arrival dates were strongly structured by latitude, whereas post-breeding departure was more closely linked to reproductive outcome. Later-arriving individuals exhibited flexible adjustment of breeding schedules across sites by shortening the pre-laying phase. Departure timing depended on reproductive outcome, with similar post-failure departure of both sexes but prolonged male residency following successful hatching, which is consistent with sex-specific parental roles. Space use varied markedly among sites and was strongly driven by dominant habitat type. In coastal systems, mudflats were heavily used throughout the breeding cycle, whereas bog-breeding redshanks increasingly used bog habitats during brooding, reflecting favourable conditions for chick development. Redshanks breeding in grassland make significant use of agricultural areas benefiting from conservation measures. Our results reveal behavioural flexibility in reproductive phenology and habitat use across the European breeding range of the redshank, allowing us to identify phases sensitive to disturbance in different populations. Agricultural habitats can be suitable, but birds seem to use mainly grasslands under protection measures, highlighting the importance of the implementation of AES (Agri-environment Schemes) and cooperation with farmers for the conservation of shorebirds.
  • Integrating field, mesocosms, and laboratory approaches to characterise denitrification-driven nitrous oxide hot moments in European wetlands
    Crestey-Chury, Thomas; Darnajoux, Romain; Sauvage, Sabine; Aurela, Mika; Camboulive, Thierry; Carles, Noémie; De Dobbelaer, Tom; Escarmena, Laura; Gandois, Laure; Jauhiainen, Jyrki; Juutinen, Sari; Larmola, Tuula; Mander, Ülo; Poblador, Sílvia; Raman, Maud; Sabater, Francesc; Schindler, Thomas; Soosaar, Kaido; Ukonmaanaho, Liisa; Sánchez-Pérez, José-Miguel
    Biogeochemistry (Springer Nature, 2026)