Association between arthropod densities suggests dominance of
top-down control of predator-prey food-webs on pear trees
during winter

J 2022

Association between arthropod densities suggests dominance of top-down control of predator-prey food-webs on pear trees during winter

MICHALKO, Radek; Domagoj GAJSKI; Ondřej KOŠULIČ; Warbota KHUM; Ondřej MICHÁLEK et al.

Základní údaje

Originální název

Association between arthropod densities suggests dominance of top-down control of predator-prey food-webs on pear trees during winter

Autoři

MICHALKO, Radek; Domagoj GAJSKI; Ondřej KOŠULIČ; Warbota KHUM; Ondřej MICHÁLEK a Stanislav PEKÁR

Vydání

Food Webs, Elsevier, 2022, 2352-2496

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10619 Biodiversity conservation

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.700

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/22:00127687

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Biocontrol; Ecosystem exploitation hypothesis; Food -web; IPM; Organic management; Winter activity

Štítky

14314020, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 26. 1. 2023 11:34, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Although winter in the temperate zone is considered to be the period of arthropod quiescence, some pests and their natural enemies remain active and interact in simplified food-webs. Limited information exists about the relative importance of top-down and bottom-up processes regulating arthropod food-webs and their spatio-temporal dynamics during winter. This information is essential for the development of effective conservation biocontrol methods. We investigated how the pest management of pear orchards (integrated [IPM] vs organic) and tree location within orchards (margin vs centre) influence the association between densities of winter-active spiders, insect herbivores and winter-inactive predators (spiders, insects) from October to April. We installed carboard bands on trunks and branches of pear trees in four organic and four IPM orchards to collect bark -dwelling arthropods. We then modelled relationships between the densities of four functional arthropod groups, namely winter-active spiders, winter-inactive spiders, winter-inactive insect predators, and herbivores. In early winter, we found a hump-shaped relationship between the densities of winter-active spiders and her-bivores. This agrees with the top-down model of the ecosystem exploitation hypothesis, predicting that predators are first bottom-up limited, then accumulate with prey densities, and exert top-down control when they become sufficiently abundant. The densities of herbivores strongly declined during winter, a phenomenon which may be partly, along with other causes of natural mortality, attributable to predation by winter active spiders. The as-sociation between winter-active spiders and winter-inactive arthropod predators switched from positive to none in organic orchards or even to a negative association in IPM orchards. Negative intraguild interactions seem to be intensified due to the declining availability of alternative prey. Overall, the investigated food-webs seem to be mostly top-down regulated during winter, and IPM seems to intensify intraguild interactions.

Návaznosti

QK1910296, projekt VaV

Název: Efektivita nových postupů regulace škodlivých činitelů v ovocnářství (Akronym: Biosady)

Investor: Ministerstvo zemědělství ČR, Efektivita nových postupů regulace škodlivých činitelů v ovocnářství

Citovat

MICHALKO, Radek; Domagoj GAJSKI; Ondřej KOŠULIČ; Warbota KHUM; Ondřej MICHÁLEK a Stanislav PEKÁR. Association between arthropod densities suggests dominance of top-down control of predator-prey food-webs on pear trees during winter. Food Webs. Elsevier, 2022, roč. 33, December, s. 1-9. ISSN 2352-2496. Dostupné z: https://doi.org/10.1016/j.fooweb.2022.e00261.

@article{2243530,
   author = {Michalko, Radek and Gajski, Domagoj and Košulič, Ondřej and Khum, Warbota and Michálek, Ondřej and Pekár, Stanislav},
   article_number = {December},
   doi = {https://doi.org/10.1016/j.fooweb.2022.e00261},
   keywords = {Biocontrol; Ecosystem exploitation hypothesis; Food -web; IPM; Organic management; Winter activity},
   language = {eng},
   issn = {2352-2496},
   journal = {Food Webs},
   title = {Association between arthropod densities suggests dominance of top-down control of predator-prey food-webs on pear trees during winter},
   url = {https://doi.org/10.1016/j.fooweb.2022.e00261},
   volume = {33},
   year = {2022}
}

TY  - JOUR
ID  - 2243530
AU  - Michalko, Radek - Gajski, Domagoj - Košulič, Ondřej - Khum, Warbota - Michálek, Ondřej - Pekár, Stanislav
PY  - 2022
TI  - Association between arthropod densities suggests dominance of top-down control of predator-prey food-webs on pear trees during winter
JF  - Food Webs
VL  - 33
IS  - December
SP  - 1-9
EP  - 1-9
PB  - Elsevier
SN  - 23522496
KW  - Biocontrol
KW  - Ecosystem exploitation hypothesis
KW  - Food -web
KW  - IPM
KW  - Organic management
KW  - Winter activity
UR  - https://doi.org/10.1016/j.fooweb.2022.e00261
N2  - Although winter in the temperate zone is considered to be the period of arthropod quiescence, some pests and their natural enemies remain active and interact in simplified food-webs. Limited information exists about the relative importance of top-down and bottom-up processes regulating arthropod food-webs and their spatio-temporal dynamics during winter. This information is essential for the development of effective conservation biocontrol methods. We investigated how the pest management of pear orchards (integrated [IPM] vs organic) and tree location within orchards (margin vs centre) influence the association between densities of winter-active spiders, insect herbivores and winter-inactive predators (spiders, insects) from October to April. We installed carboard bands on trunks and branches of pear trees in four organic and four IPM orchards to collect bark -dwelling arthropods. We then modelled relationships between the densities of four functional arthropod groups, namely winter-active spiders, winter-inactive spiders, winter-inactive insect predators, and herbivores. In early winter, we found a hump-shaped relationship between the densities of winter-active spiders and her-bivores. This agrees with the top-down model of the ecosystem exploitation hypothesis, predicting that predators are first bottom-up limited, then accumulate with prey densities, and exert top-down control when they become sufficiently abundant. The densities of herbivores strongly declined during winter, a phenomenon which may be partly, along with other causes of natural mortality, attributable to predation by winter active spiders. The as-sociation between winter-active spiders and winter-inactive arthropod predators switched from positive to none in organic orchards or even to a negative association in IPM orchards. Negative intraguild interactions seem to be intensified due to the declining availability of alternative prey. Overall, the investigated food-webs seem to be mostly top-down regulated during winter, and IPM seems to intensify intraguild interactions.
ER  -

MICHALKO, Radek; Domagoj GAJSKI; Ondřej KOŠULIČ; Warbota KHUM; Ondřej MICHÁLEK a Stanislav PEKÁR. Association between arthropod densities suggests dominance of top-down control of predator-prey food-webs on pear trees during winter. \textit{Food Webs}. Elsevier, 2022, roč.~33, December, s.~1-9. ISSN~2352-2496. Dostupné z: https://doi.org/10.1016/j.fooweb.2022.e00261.

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