Effects of shading and site conditions on vegetative and generative growth of a native grassland invader

Krieger, Marie‐Therese; Ditton, Julia; Albrecht, Harald; Linderl, Luise; Kollmann, Johannes; Teixeira, Leonardo H.

doi:10.1016/j.ecoleng.2022.106592

Cited by 7 publications

(14 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our results are in line with those of Suter and Lüscher (2011) who reported a reduction of J. aquatica following a repeated late‐seasonal mowing instead of bi‐annual mowing in grasslands of different productivity levels. Generally, competition for light reduced J. aquatica growth and the number of individuals; the latter due to dying rosettes and less reproduction (Suter & Lüscher, 2011; Bassler et al, 2016; Krieger et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Adaptation of mowing strategies was also found to reduce abundance and fecundity of native invaders (Winter et al, 2014;Bassler et al, 2016;Krieger et al, 2022). Nevertheless, such management practices may, apart from the desired suppression of the native invader, also negatively affect different aspects of community structure, such as species composition, evenness and richness (Chapin III et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Management methods suitable to put the above‐mentioned concepts into practice include different cutting intensities, delay of the first mowing event (Humbert et al, 2012), modified fertilization strategies (Oelmann et al, 2009), and re‐seeding of vegetation gaps. Adaptation of mowing strategies was also found to reduce abundance and fecundity of native invaders (Winter et al, 2014; Bassler et al, 2016; Krieger et al, 2022). Nevertheless, such management practices may, apart from the desired suppression of the native invader, also negatively affect different aspects of community structure, such as species composition, evenness and richness (Chapin III et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Controlling the abundance of a native invasive plant does not affect species richness or functional diversity of wet grasslands

Krieger

Ditton

Albrecht

et al. 2022

Applied Vegetation Science

Self Cite

View full text Add to dashboard Cite

Aim In this study, we tested plant community‐based management methods to reduce the abundance of the invasive native plant Jacobaea aquatica (marsh ragwort). As J. aquatica mainly occurs in species‐rich wet grasslands, our aim was to define management measures that do not reduce the conservation value of the resident communities. Location Data were collected from 20 independent sites which varied in productivity and management intensity across the pre‐alpine Allgäu region (South Germany). Methods We monitored effects of temporary abandonment and decreased mowing intensity in very low‐ and low‐productive sites, as well as of decreased mowing and fertilization at moderately productive sites. Abundances of J. aquatica and the co‐occurring species were recorded at start and end of two experiments (2018–2021: very low‐ and low‐productive conservation grasslands; 2017–2020: moderately productive agricultural grasslands), while functional traits data of all species were gathered from the literature and specific databases. Generalized linear mixed‐effects models (GLMMs) were used to analyse the effects of management intensity on the abundance of J. aquatica, functional diversity and species richness of the resident communities. Results At all productivity levels, the abundance of J. aquatica declined under reduced management. Changes in community composition and species richness of the resident community were less pronounced than the reduction of J. aquatica, but species richness declined under lowest management intensities. Thus, moderate reduction in management intensity provided the most benefits in terms of reduction of J. aquatica, and maintenance of species richness and composition of the resident plant community. Conclusions Reducing management intensity in wet grasslands decreases the abundance of J. aquatica and thus is a suitable method to control this species. As plant community responses were only partially consistent, management plans must account for the productivity of invaded sites. To avoid negative effects on grassland biodiversity, only moderate suppression of J. aquatica is recommended.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Controlling the abundance of a native invasive plant does not affect species richness or functional diversity of wet grasslands

Krieger

Ditton

Albrecht

et al. 2022

Applied Vegetation Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…On the other hand, the Andean scenario is losing its vegetation cover, which is evidenced by the presence of increasingly rarefied plants until it becomes a bald zone; this is aggravated by the rugged topography that also directly influences the spatial change of hydrological conditions through soil moisture, which in turn is responsible for the predominant edaphic and biotic characteristics [8,9]. It is the microbial and biochemical properties of soil that undergo greater changes than chemical properties; thus we have the report on Iranian uplands where the change meant 36%, followed by the change in particulate organic carbon at 22%, microbial carbon at 15%, available phosphorus in 15%, etc., which concluded that microbial properties, labile carbon and phosphorus availability should be taken into account to detect the effects of fire on grasslands [10], especially in highly degraded grasslands such as the Andean mountain range, except when the grasslands were cut, which in that case would condition a greater exposure of the soil to sunlight that would allow the appearance and temporary development of invasive species [11].…”

Section: Introductionmentioning

confidence: 99%

Organic Carbon Stored in the Aerial Phytomass of Fire-threatened Andean Grassland Species

Yaranga

Quiñonez²,

Orellana³

2022

JAERI

View full text Add to dashboard Cite

The practice of burning Andean grasslands in uncontrolled conditions and dry seasonal periods affects the sustainability of the ecosystem with the loss of native grasslands species with superficial roots, the volatilization of organic matter and superficial soil nitrogen, and greater susceptibility to wind and rain erosion, which affects the forage supply of grazing areas that affect the economy of the cattle rancher in addition to emitting abundant CO₂ into the atmosphere. The objective was to quantify the loss of organic carbon contained in the aerial phytomass of burned grasslands and the dynamics of recovery of their shoots, for which seven grasslands with different dominant species and the exclusion of grazing were chosen from five plots of 900 m² with five subplots of 64 m², whose aerial phytomass was harvested, and the shoots were measured in their leaf height for nine months. As a result, variable amounts of carbon were obtained according to dominant grassland species for p: 0.001 from 5.02±1.05 to 20.02±0.95 t/ha, equivalent from 22.09 to 73.47 t.CO₂/ha. The recovery of shoot phytomass barely reached 37.32% to 55.94% concerning the initial amount obtained in the mother plants. It was concluded that each grassland has its performance of storage and recovery of stored carbon and the findings should be cause for reflection and be the basis for public policies to promote the protection of grasslands.

show abstract

“…Tanto em áreas antropogênicas quanto em áreas de vegetação nativa, o sombreamento pode modificar as condições microambientais (Krieger et al 2022), por promover a redução da evaporação, manter o solo úmido por mais tempo, e, muitas vezes, aumentar a fertilidade do mesmo, pela decomposição das folhas que ficam abaixo da copa das plantas (Grouzis e Akpo 1997). Tal fato poderia compensar o efeito alelopático de algumas espécies ou outro fator limitante da germinação e estabelecimento da plântula, caso existissem, por reduzir o efeito negativo da elevada incidência de luz solar, possibilitando a ocorrência de interações de facilitação entre as espécies, o que pode favorecer a germinação de algumas espécies e recuperação das áreas.…”

Section: Introductionunclassified

O papel de árvores isoladas na composição e abundância de espécies herbáceas em ambiente semiárido

Feitoza

Kiill

Araújo

et al. 2022

CONJ

View full text Add to dashboard Cite

O sombreamento da copa das árvores pode influenciar o estabelecimento de plântulas e a regeneração das florestas em áreas antropogênicas. Objetivou-se avaliar o papel do sombreamento de árvores isoladas sobre a riqueza e a densidade de ervas em dois locais (parcelas sombreadas pela copa de Spondias tuberosa Arruda e parcelas a pleno sol) dentro de três habitats (floresta jovem – 3 anos; floresta madura > 50 anos; e em um Banco de Germoplasma Ativo - BAG de S. tuberosa) de ambientes semiáridos. Em cada local foram alocadas 15 parcelas de 1X1 m, totalizando 30 parcelas por habitat. Diferenças na riqueza e densidade média de ervas entre os locais e habitats foram avaliadas por uma ANOVA aninhada, com teste a posteri de Tukey. A riqueza total de ervas do BAG e das florestas jovem e madura foi de 29, 19 e 23 espécies, respectivamente, existindo diferença estatística na riqueza média de espécies. A densidade média de ervas foi significativamente maior no BAG a pleno sol, mas não diferiu nas condições de sombreamento e a pleno sol das florestas jovem e madura. A prática de manter árvores isoladas em áreas antropogênicas tende a ser positiva para a riqueza de espécies e negativa para a densidade de ervas.

show abstract

Effects of shading and site conditions on vegetative and generative growth of a native grassland invader

Cited by 7 publications

References 51 publications

Controlling the abundance of a native invasive plant does not affect species richness or functional diversity of wet grasslands

Controlling the abundance of a native invasive plant does not affect species richness or functional diversity of wet grasslands

Organic Carbon Stored in the Aerial Phytomass of Fire-threatened Andean Grassland Species

O papel de árvores isoladas na composição e abundância de espécies herbáceas em ambiente semiárido

Contact Info

Product

Resources

About