Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra

Spatial variation in the strength of trophic cascades in arctic tundra has been related to flows of subsidies across ecosystem boundaries. Here, we ask whether the input of marine subsidies in tundra systems would cause spatial variation in the strength of rodent-plant interactions between coastal a...

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Main Authors: Ruffino, Lise, Oksanen, Tarja, Hoset, Katrine S., Tuomi, Maria, Oksanen, Lauri, Korpimäki, Erkki, Bugli, Amandine, Hobson, Keith A., Johansen, Bernt, Mäkynen, Aurelia
Format: Dataset
Language:unknown
Published: 2020
Subjects:
geo
Online Access:https://doi.org/10.5061/dryad.dt059
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spelling fttriple:oai:gotriple.eu:50|dedup_wf_001::88fdea029cce81d884c3fb98f6c262a6 2023-05-15T14:58:05+02:00 Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra Ruffino, Lise Oksanen, Tarja Hoset, Katrine S. Tuomi, Maria Oksanen, Lauri Korpimäki, Erkki Bugli, Amandine Hobson, Keith A. Johansen, Bernt Mäkynen, Aurelia 2020-07-04 https://doi.org/10.5061/dryad.dt059 undefined unknown http://dx.doi.org/10.5061/dryad.dt059 https://dx.doi.org/10.5061/dryad.dt059 lic_creative-commons oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:91362 10.5061/dryad.dt059 oai:easy.dans.knaw.nl:easy-dataset:91362 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 re3data_____::r3d100000044 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 Life sciences medicine and health care marine subsidies Stercorarius longicaudus arctic systems Stercorarius parasiticus population regulation trophic cascade 2011-2013 Predator-prey interactions Northern Fennoscandia envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2020 fttriple https://doi.org/10.5061/dryad.dt059 2023-01-22T17:23:37Z Spatial variation in the strength of trophic cascades in arctic tundra has been related to flows of subsidies across ecosystem boundaries. Here, we ask whether the input of marine subsidies in tundra systems would cause spatial variation in the strength of rodent-plant interactions between coastal areas, where predators have access to marine-derived resources, and non-subsidized inland areas of northern Fennoscandia. We present a detailed evaluation of predator-rodent-vegetation interactions along a coast-inland gradient, during the 2011 rodent outbreak and the two following decline years, by using direct assessments of rodent impacts and tracing of marine-derived nutrients in the food web. Our results revealed that the main rodent predator during summer, the long-tailed jaeger Stercorarius longicaudus, did not benefit from marine resources while breeding (relative dietary proportion in chicks’ diet = 0-3%). Contrary to this pattern, parasitic jaegers S. parasiticus, bred exclusively near the coast and preyed effectively on both marine resources (41% of chicks’ diet) and rodents (12%). Mammalian predators also showed a higher activity during winter near the coast. Despite overall higher predator numbers, no evidence was found for lower rodent population growth rates during the three monitoring summers and for weaker rodent grazing impacts in the coastal area. Instead, we documented pronounced damages caused by lemmings and voles on bryophytes and vascular plants, especially dwarf shrubs (e.g., Vaccinum myrtillus) all along the coast-inland gradient. Taken together, our results did not support the hypothesis that marine subsidies would trigger a trophic cascade in coastal tundra areas of northern Fennoscandia during a major rodent outbreak, probably due to a low diversity of marine-subsidized predators in the region. Comparative observational and experimental studies at large spatial scales in various arctic regions are absolutely necessary for a better understanding of factors causing regional variations in the ... Dataset Arctic Fennoscandia Fennoscandian Long-tailed Jaeger Stercorarius longicaudus Stercorarius parasiticus Tundra Unknown Arctic
institution Open Polar
collection Unknown
op_collection_id fttriple
language unknown
topic Life sciences
medicine and health care
marine subsidies
Stercorarius longicaudus
arctic systems
Stercorarius parasiticus
population regulation
trophic cascade
2011-2013
Predator-prey interactions
Northern Fennoscandia
envir
geo
spellingShingle Life sciences
medicine and health care
marine subsidies
Stercorarius longicaudus
arctic systems
Stercorarius parasiticus
population regulation
trophic cascade
2011-2013
Predator-prey interactions
Northern Fennoscandia
envir
geo
Ruffino, Lise
Oksanen, Tarja
Hoset, Katrine S.
Tuomi, Maria
Oksanen, Lauri
Korpimäki, Erkki
Bugli, Amandine
Hobson, Keith A.
Johansen, Bernt
Mäkynen, Aurelia
Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra
topic_facet Life sciences
medicine and health care
marine subsidies
Stercorarius longicaudus
arctic systems
Stercorarius parasiticus
population regulation
trophic cascade
2011-2013
Predator-prey interactions
Northern Fennoscandia
envir
geo
description Spatial variation in the strength of trophic cascades in arctic tundra has been related to flows of subsidies across ecosystem boundaries. Here, we ask whether the input of marine subsidies in tundra systems would cause spatial variation in the strength of rodent-plant interactions between coastal areas, where predators have access to marine-derived resources, and non-subsidized inland areas of northern Fennoscandia. We present a detailed evaluation of predator-rodent-vegetation interactions along a coast-inland gradient, during the 2011 rodent outbreak and the two following decline years, by using direct assessments of rodent impacts and tracing of marine-derived nutrients in the food web. Our results revealed that the main rodent predator during summer, the long-tailed jaeger Stercorarius longicaudus, did not benefit from marine resources while breeding (relative dietary proportion in chicks’ diet = 0-3%). Contrary to this pattern, parasitic jaegers S. parasiticus, bred exclusively near the coast and preyed effectively on both marine resources (41% of chicks’ diet) and rodents (12%). Mammalian predators also showed a higher activity during winter near the coast. Despite overall higher predator numbers, no evidence was found for lower rodent population growth rates during the three monitoring summers and for weaker rodent grazing impacts in the coastal area. Instead, we documented pronounced damages caused by lemmings and voles on bryophytes and vascular plants, especially dwarf shrubs (e.g., Vaccinum myrtillus) all along the coast-inland gradient. Taken together, our results did not support the hypothesis that marine subsidies would trigger a trophic cascade in coastal tundra areas of northern Fennoscandia during a major rodent outbreak, probably due to a low diversity of marine-subsidized predators in the region. Comparative observational and experimental studies at large spatial scales in various arctic regions are absolutely necessary for a better understanding of factors causing regional variations in the ...
format Dataset
author Ruffino, Lise
Oksanen, Tarja
Hoset, Katrine S.
Tuomi, Maria
Oksanen, Lauri
Korpimäki, Erkki
Bugli, Amandine
Hobson, Keith A.
Johansen, Bernt
Mäkynen, Aurelia
author_facet Ruffino, Lise
Oksanen, Tarja
Hoset, Katrine S.
Tuomi, Maria
Oksanen, Lauri
Korpimäki, Erkki
Bugli, Amandine
Hobson, Keith A.
Johansen, Bernt
Mäkynen, Aurelia
author_sort Ruffino, Lise
title Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra
title_short Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra
title_full Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra
title_fullStr Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra
title_full_unstemmed Data from: Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra
title_sort data from: predator-rodent-plant interactions along a coast-inland gradient in fennoscandian tundra
publishDate 2020
url https://doi.org/10.5061/dryad.dt059
geographic Arctic
geographic_facet Arctic
genre Arctic
Fennoscandia
Fennoscandian
Long-tailed Jaeger
Stercorarius longicaudus
Stercorarius parasiticus
Tundra
genre_facet Arctic
Fennoscandia
Fennoscandian
Long-tailed Jaeger
Stercorarius longicaudus
Stercorarius parasiticus
Tundra
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