Declines in occurrence of plants characteristic for a nutrient‐poor meadow habitat are partly explained by their responses to nutrient addition and competition

Höckendorff, Stefanie; Peintinger, Markus; Fiedler, Felicitas; Stift, Marc; Kleunen, Mark van

doi:10.1002/ece3.7306

Cited by 4 publications

(2 citation statements)

References 53 publications

(59 reference statements)

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“…From resurveys conducted on all Molinia meadows in 2012 (Peintinger, 2012), an overall decline of habitat‐characteristic species was observed since 1911 (Baumann, 1911). This partly reflects the disappearance of these meadows, but even within intact Molinia meadows, species decline happened (Höckendorff et al, 2021). The overall recent decline in terrestrial plant diversity that we observed in the sediment cores can most likely be explained by major environmental changes, such as land‐use change (e.g., urbanization and bank confinements; Güde et al, 1999; IGKB, 2009), that took place across the catchment area in the 20th century (Murphy et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…As the terrestrial habitats around Lower Lake Constance have not seen a reversal of environmental change, it is likely that changes in the terrestrial vegetation have not reversed. At least for the nutrient‐poor Molinia meadows around the lake, comparisons of current plant records with historical ones show that many plant species typical for this habitat have declined (Baumann, 1911; Höckendorff et al, 2021; Lang, 1973; Peintinger, 2012). Earlier changes and changes in other habitats can only be reconstructed from pollen records or sedDNA records.…”

Section: Introductionmentioning

confidence: 99%

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Vegetation changes over the last centuries in the Lower Lake Constance region reconstructed from sediment‐core environmental DNA

et al. 2022

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Many European lake ecosystems, including their respective catchment areas, underwent anthropogenic environmental changes over the last centuries. This has resulted in changes in the aquatic and terrestrial vegetation, but historical records on the composition of the past vegetation on centennial scale are scarce. In this study, we examined changes in the terrestrial and aquatic plant communities in and around Lower Lake Constance using metabarcoding of sedimentary DNA (sedDNA) of three cores from different sub‐basins covering the past, up to 300 years. We successfully identified an average of c. 3000 sequence variants (molecular operational taxonomic units ‐ MOTUs) and obtained a taxonomically annotated dataset of 127 species, 104 genera, and 72 families. We could detect major changes in the terrestrial and aquatic vegetation of the Lower Lake Constance region by examining the cores. For example, alpha diversity decreased in the last c. 100 years, and this decrease was more pronounced in the terrestrial than in the aquatic plant community. Unlike the terrestrial plant community, the current aquatic plant‐community composition partially resembles the community from before the 20th‐century eutrophication phase of the lake. In addition to changes that can be attributed to anthropogenic impacts, we also captured the effect of DNA sedimentation on the terrestrial DNA diversity representation in sediments during periods of extensive flooding and potentially as a consequence of extremely cold winters. With sedDNA from Lower Lake Constance, we provide a new local dataset to investigate and extend the historical changes of different shoreline habitats and to identify characteristic and invasive plant species. Such highly resolved datasets spanning the past centuries can provide detailed information on human environmental history in densely populated regions that have undergone severe changes in the recent past.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vegetation changes over the last centuries in the Lower Lake Constance region reconstructed from sediment‐core environmental DNA

et al. 2022

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Invasive weed disrupts facilitation of nutrient uptake in grass-clover assemblage

Zhang,

Muir,

Dickinson

2024

Soil Ecol. Lett.

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Nutrient constraints in low-fertility soil were modified by different species combinations. Grass-clover assemblages benefited both species in terms of nutrient procurement. Interplay of competition and facilitation is demonstrated. An invasive weed removed essential nutrients from the grazing cycle. To investigate the interplay of competition and facilitation between plants in low-fertility pasture grasslands of New Zealand, we compared nutrient uptake and acquisition of key nutrients of three species from different functional groups. Combinations of Pilosella officinarum (mouse-eared hawk-weed, an invasive weed), Trifolium repens (white clover, a nitrogen fixer) and Dactylis glomerata (cocksfoot, a pasture grass) were planted into a soil with low-to-deficient concentrations of key nutrients. Highest yields were achieved by the grass growing alone but, when the clover and grass had grown together, there were complementary benefits in terms of procurement of a wide range of nutrients from soil despite lower root biomass. The invasive weed negated these benefits, and soil nutrients were exploited less efficiently when Pilosella had grown alone or in a mixture with the other species. Competition from the weed removed the benefits of grass-legume coexistence. These findings are interpreted to suggest that requirements for legumes to be the main source of nitrogen in pasture grasslands may be compromised unless competitive weeds are controlled to avoid disrupted procurement of key nutrients. It is likely these constraints to nutrient procurement would similarly impact conservation grasslands.

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Disturbance and biomass removal enhance population reinforcement of a plant species of European conservation concern

Streitberger

Borgmann

Drung

et al. 2022

Plant Ecology & Diversity

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Declines in occurrence of plants characteristic for a nutrient‐poor meadow habitat are partly explained by their responses to nutrient addition and competition

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 4 publications

References 53 publications

Vegetation changes over the last centuries in the Lower Lake Constance region reconstructed from sediment‐core environmental DNA

Vegetation changes over the last centuries in the Lower Lake Constance region reconstructed from sediment‐core environmental DNA

Invasive weed disrupts facilitation of nutrient uptake in grass-clover assemblage

Disturbance and biomass removal enhance population reinforcement of a plant species of European conservation concern

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