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Seed predation is key to preventing population growth of the weed Alopecurus myosuroides

Daouti, Eirini Lamprini and Jonsson, Mattias and Vico, Giulia and Menegat, Alexander (2022). Seed predation is key to preventing population growth of the weed Alopecurus myosuroides. Journal of Applied Ecology. 59 :2 , 471-482
[Research article]

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Abstract

Seed predation can reduce the abundance and spread of unwanted vegetation in agricultural and other semi-natural ecosystems. However, knowledge of how variations in seed predation rates affect plant species population dynamics is needed for decision making and knowledge-based ecosystem management. We developed a stage-classified stochastic matrix population model for Alopecurus myosuroides Huds. (blackgrass), an annual plant species thriving as a weed in temperate agroecosystems of Western and Northern Europe. The model was parameterised using empirical demographic data from long-term experiments in Swedish winter wheat fields, including information on post-dispersal seed losses by vertebrate and invertebrate seed predators. For agroecosystems with highly effective weed control measures (e.g. chemical and mechanical weed control), model simulations showed that seed losses via seed predation need to reach at least 78% at peak seed shedding to suppress population growth of A. myosuroides. The field experiment showed that vertebrates were most important for seed predation in July, at peak seed shedding. In August, after crop harvest, invertebrates were responsible for almost all seed predation. The model indicated that weed seed predation was much more important for weed regulation when it occurred before crop harvest in July. Vertebrates most strongly reduced population growth of A. myosuroides, although both vertebrates and invertebrates were needed to prevent it entirely. Synthesis and applications. We showed that weed seed predation by vertebrate and invertebrate seed predators is key for reducing the population growth of winter annual weeds like A. myosuroides in intensively managed agroecosystems. Therefore, protection of weed seed predators is essential for making management of unwanted vegetation less dependent on chemical and mechanical measures.

Authors/Creators:Daouti, Eirini Lamprini and Jonsson, Mattias and Vico, Giulia and Menegat, Alexander
Title:Seed predation is key to preventing population growth of the weed Alopecurus myosuroides
Series Name/Journal:Journal of Applied Ecology
Year of publishing :2022
Volume:59
Number:2
Page range:471-482
Number of Pages:12
Publisher:WILEY
ISSN:0021-8901
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:agroecosystem, blackgrass, ecological weed management, ecosystem service, invertebrate seed predators, stochastic matrix population model, vertebrate seed predators, weed population dynamics
URN:NBN:urn:nbn:se:slu:epsilon-p-114376
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114376
Additional ID:
Type of IDID
DOI10.1111/1365-2664.14064
Web of Science (WoS)000713764200001
ID Code:27158
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology

(NL, NJ) > Dept. of Crop Production Ecology
Deposited By: SLUpub Connector
Deposited On:21 Feb 2022 11:25
Metadata Last Modified:21 Feb 2022 11:31

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