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  • 1
    Online Resource
    Online Resource
    Disentangling temporal food web dynamics facilitates understanding of ecosystem functioning
    Wiley ; 2021
    In:  Journal of Animal Ecology Vol. 90, No. 5 ( 2021-05), p. 1205-1216
    Details
    In: Journal of Animal Ecology, Wiley, Vol. 90, No. 5 ( 2021-05), p. 1205-1216
    Abstract: Studying how food web structure and function vary through time represents an opportunity to better comprehend and anticipate ecosystem changes. Yet, temporal studies of highly resolved food web structure are scarce. With few exceptions, most temporal food web studies are either too simplified, preventing a detailed assessment of structural properties or binary, missing the temporal dynamics of energy fluxes among species. Using long‐term, multi‐trophic biomass data coupled with highly resolved information on species feeding relationships, we analysed food web dynamics in the Gulf of Riga (Baltic Sea) over more than three decades (1981–2014). We combined unweighted (topology‐based) and weighted (biomass‐ and flux‐based) food web approaches, first, to unravel how distinct descriptors can highlight differences (or similarities) in food web dynamics through time, and second, to compare temporal dynamics of food web structure and function. We find that food web descriptors vary substantially and distinctively through time, likely reflecting different underlying ecosystem processes. While node‐ and link‐weighted metrics reflect changes related to alterations in species dominance and fluxes, unweighted metrics are more sensitive to changes in species and link richness. Comparing unweighted, topology‐based metrics and flux‐based functions further indicates that temporal changes in functions cannot be predicted using unweighted food web structure. Rather, information on species population dynamics and weighted, flux‐based networks should be included to better comprehend temporal food web dynamics. By integrating unweighted, node‐ and link‐weighted metrics, we here demonstrate how different approaches can be used to compare food web structure and function, and identify complementary patterns of change in temporal food web dynamics, which enables a more complete understanding of the ecological processes at play in ecosystems undergoing change.
    Type of Medium: Online Resource
    ISSN: 0021-8790 , 1365-2656
    URL: Issue
    URL: Article
    DOI: 10.1111/jane.v90.5
    DOI: 10.1111/1365-2656.13447
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2006616-8
    SSG: 12
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Impact of round goby on native invertebrate communities - An experimental field study
    Elsevier BV ; 2021
    In:  Journal of Experimental Marine Biology and Ecology Vol. 541 ( 2021-08), p. 151571-
    Details
    In: Journal of Experimental Marine Biology and Ecology, Elsevier BV, Vol. 541 ( 2021-08), p. 151571-
    Type of Medium: Online Resource
    ISSN: 0022-0981
    URL: Article
    DOI: 10.1016/j.jembe.2021.151571
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 410283-6
    detail.hit.zdb_id: 1483103-X
    SSG: 12
    SSG: 7,20
    Location Call Number Limitation Availability
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Eutrophication: Early warning signals, ecosystem-level and societal responses, and ways forward : This article belongs to Ambio’s 50th Anniversary Collection. Theme: Eutrophication
    Springer Science and Business Media LLC ; 2021
    In:  Ambio Vol. 50, No. 4 ( 2021-04), p. 753-758
    Details
    In: Ambio, Springer Science and Business Media LLC, Vol. 50, No. 4 ( 2021-04), p. 753-758
    Abstract: Eutrophication, i.e. nutrient over-enrichment, has been a topic for academic and societal debate for the past five decades both on land and in aquatic systems fed by nutrients as diffuse loading from agricultural lands and as wastewater from industrial and municipal point-sources. The use of nutrients (primarily nitrogen and phosphorus) in excess became a problem with the onset of large-scale production and use of artificial fertilizers after World War II, and the effects on the aquatic environment became obvious some two to three decades later. In this Perspective, four seminal papers on eutrophication are discussed in light of the current knowledge of the problem, including future perspectives and outlooks in the light of global climate change and the demand for science-based holistic ecosystem-level policies and management options.
    Type of Medium: Online Resource
    ISSN: 0044-7447 , 1654-7209
    URL: Article
    DOI: 10.1007/s13280-020-01432-7
    RVK:
    AR 10100
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 120759-3
    detail.hit.zdb_id: 2040524-8
    SSG: 23
    SSG: 12
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  • 4
    Online Resource
    Online Resource
    Identifying biotic drivers of population dynamics in a benthic–pelagic community
    Wiley ; 2021
    In:  Ecology and Evolution Vol. 11, No. 9 ( 2021-05), p. 4035-4045
    Details
    In: Ecology and Evolution, Wiley, Vol. 11, No. 9 ( 2021-05), p. 4035-4045
    Abstract: Benthic species and communities are linked to pelagic zooplankton through life‐stages encompassing both benthic and pelagic habitats and through a mutual dependency on primary producers as a food source. Many zooplankton taxa contribute to the sedimentary system as benthic eggs. Our main aim was to investigate the nature of the population level biotic interactions between and within these two seemingly independent communities, both dependent on the pelagic primary production, while simultaneously accounting for environmental drivers (salinity, temperature, and oxygen conditions). To this end, we applied multivariate autoregressive state‐space models to long (1966–2007) time series of annual abundance data, comparing models with and without interspecific interactions, and models with and without environmental variables included. We were not able to detect any direct coupling between sediment‐dwelling benthic taxa and pelagic copepods and cladocerans on the annual scale, but the most parsimonious model indicated that interactions within the benthic community are important. There were also positive residual correlations between the copepods and cladocerans potentially reflecting the availability of a shared resource or similar seasonal dependence, whereas both groups tended to correlate negatively with the zoobenthic taxa. The most notable single interaction within the benthic community was a tendency for a negative effect of Limecola balthica on the amphipods Monoporeia affinis and Pontoporeia femorata which can help explain the observed decrease in amphipods due to increased competitive interference.
    Type of Medium: Online Resource
    ISSN: 2045-7758 , 2045-7758
    URL: Issue
    URL: Article
    DOI: 10.1002/ece3.v11.9
    DOI: 10.1002/ece3.7298
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2635675-2
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