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First steps in restoring Río de la Plata grasslands: the importance of harvest method and season.

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Title: First steps in restoring Río de la Plata grasslands: the importance of harvest method and season.
Authors: Pañella, Pedro G.1 (AUTHOR) ppanella@fagro.edu.uy, Guido, Anaclara2 (AUTHOR), Pereira, Marcelo3 (AUTHOR), Lezama, Felipe1 (AUTHOR)
Source: Restoration Ecology. Sep2024, Vol. 32 Issue 7, p1-9. 9p.
Subjects: Seed harvesting, Native species, Grassland restoration, Mechanical efficiency, Grasslands, Hay
Geographic Terms: Uruguay
Abstract: Current trends in agricultural intensification lead to degraded grasslands, requiring their restoration through native species reintroduction. Various techniques are available for harvesting seeds from donor sites. However, little is known about their performance in South American C3/C4 mixed grasslands, where studies are scarce. Their particular species composition and phenology, with different flowering periods, require specific harvest strategies. We evaluated mechanical seed harvest in a northern Uruguay grassland, part of Río de la Plata grasslands. Performance of two mechanical harvest methods (seed‐stripper and dry hay) was compared in two harvest seasons (late‐spring and mid‐summer). The evaluation considered the quantity and identity of harvested seeds, and their germination in a greenhouse. Hand collections were made to assess standing seed yield. For each seed mixture, efficiency of mechanical harvests (number of seeds and seedlings compared to hand collection), proportion of germinated seeds, species transfer relative to donor site, and composition were calculated. Results revealed trade‐offs between harvests: seed‐stripper in late‐spring presented low seed collection efficiency (2% for seeds, 5% for seedlings) and species richness (43% transfer), but high seed germination (64%), showing selectivity toward winter species; seed‐stripper in mid‐summer and dry hay in both seasons showed high seed collection efficiency (42–154% for seeds, 26–50% for seedlings) and species richness (65–80% transfer), resembling donor site, albeit lower seed germination (9–20%). Seed‐stripper performance varied between seasons, while dry hay remained consistently effective. These results are pioneering for grassland restoration in Uruguay, encouraging future studies to focus on establishment in the field. [ABSTRACT FROM AUTHOR]
Copyright of Restoration Ecology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 179639693
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PubTypeId: academicJournal
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  Data: First steps in restoring Río de la Plata grasslands: the importance of harvest method and season.
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  Data: <searchLink fieldCode="AR" term="%22Pañella%2C+Pedro+G%2E%22">Pañella, Pedro G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ppanella@fagro.edu.uy</i><br /><searchLink fieldCode="AR" term="%22Guido%2C+Anaclara%22">Guido, Anaclara</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pereira%2C+Marcelo%22">Pereira, Marcelo</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lezama%2C+Felipe%22">Lezama, Felipe</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Restoration+Ecology%22">Restoration Ecology</searchLink>. Sep2024, Vol. 32 Issue 7, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Seed+harvesting%22">Seed harvesting</searchLink><br /><searchLink fieldCode="DE" term="%22Native+species%22">Native species</searchLink><br /><searchLink fieldCode="DE" term="%22Grassland+restoration%22">Grassland restoration</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+efficiency%22">Mechanical efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Grasslands%22">Grasslands</searchLink><br /><searchLink fieldCode="DE" term="%22Hay%22">Hay</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Uruguay%22">Uruguay</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Current trends in agricultural intensification lead to degraded grasslands, requiring their restoration through native species reintroduction. Various techniques are available for harvesting seeds from donor sites. However, little is known about their performance in South American C3/C4 mixed grasslands, where studies are scarce. Their particular species composition and phenology, with different flowering periods, require specific harvest strategies. We evaluated mechanical seed harvest in a northern Uruguay grassland, part of Río de la Plata grasslands. Performance of two mechanical harvest methods (seed‐stripper and dry hay) was compared in two harvest seasons (late‐spring and mid‐summer). The evaluation considered the quantity and identity of harvested seeds, and their germination in a greenhouse. Hand collections were made to assess standing seed yield. For each seed mixture, efficiency of mechanical harvests (number of seeds and seedlings compared to hand collection), proportion of germinated seeds, species transfer relative to donor site, and composition were calculated. Results revealed trade‐offs between harvests: seed‐stripper in late‐spring presented low seed collection efficiency (2% for seeds, 5% for seedlings) and species richness (43% transfer), but high seed germination (64%), showing selectivity toward winter species; seed‐stripper in mid‐summer and dry hay in both seasons showed high seed collection efficiency (42–154% for seeds, 26–50% for seedlings) and species richness (65–80% transfer), resembling donor site, albeit lower seed germination (9–20%). Seed‐stripper performance varied between seasons, while dry hay remained consistently effective. These results are pioneering for grassland restoration in Uruguay, encouraging future studies to focus on establishment in the field. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Restoration Ecology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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    Identifiers:
      – Type: doi
        Value: 10.1111/rec.14219
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: Seed harvesting
        Type: general
      – SubjectFull: Native species
        Type: general
      – SubjectFull: Grassland restoration
        Type: general
      – SubjectFull: Mechanical efficiency
        Type: general
      – SubjectFull: Grasslands
        Type: general
      – SubjectFull: Hay
        Type: general
      – SubjectFull: Uruguay
        Type: general
    Titles:
      – TitleFull: First steps in restoring Río de la Plata grasslands: the importance of harvest method and season.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Pañella, Pedro G.
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            NameFull: Guido, Anaclara
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            NameFull: Pereira, Marcelo
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            NameFull: Lezama, Felipe
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          Dates:
            – D: 01
              M: 09
              Text: Sep2024
              Type: published
              Y: 2024
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              Value: 32
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              Value: 7
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            – TitleFull: Restoration Ecology
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