Nitrogen stocks in a riparian area invaded by N-fixing black locust (Robinia pseudoacacia L.)

Akamatsu, Fumikazu; Ide, Koichi; Shimano, Koji; Toda, Hideki

doi:10.1007/s11355-010-0125-0

Cited by 13 publications

(4 citation statements)

References 37 publications

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“…) but N content is site specific (Akamatsu et al . ). Alonso, González‐Muñoz & Castro‐Díez () compared leaf litter of R. pseudoacacia to other deciduous trees.…”

Section: Structure and Physiologymentioning

confidence: 97%

Biological Flora of the British Isles: Robinia pseudoacacia

et al. 2013

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Summary1. This account presents information on all aspects of the biology of Robinia pseudoacacia L. that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of the British Isles: distribution, habitat, communities, responses to biotic factors, responses to environment, structure and physiology, phenology, floral and seed characters, herbivores and disease, and history and conservation. 2. Robinia pseudoacacia, false acacia or black locust, is a deciduous, broad-leaved tree native to North America. The medium-sized, fast-growing tree is armed with spines, and extensively suckering. It has become naturalized in grassland, semi-natural woodlands and urban habitats. The tree is common in the south of the British Isles and in many other regions of Europe. 3. Robinia pseudoacacia is a light-demanding pioneer species, which occurs primarily in disturbed sites on fertile to poor soils. The tree does not tolerate wet or compacted soils. In contrast to its native range, where it rapidly colonizes forest gaps and is replaced after 15-30 years by more competitive tree species, populations in the secondary range can persist for a longer time, probably due to release from natural enemies. 4. Robinia pseudoacacia reproduces sexually, and asexually by underground runners. Disturbance favours clonal growth and leads to an increase in the number of ramets. Mechanical stem damage and fires also lead to increased clonal recruitment. 5. The tree benefits from di-nitrogen fixation associated with symbiotic rhizobia in root nodules. Estimated symbiotic nitrogen fixation rates range widely from 23 to 300 kg ha À1 year À1 . The nitrogen becomes available to other plants mainly by the rapid decay of nitrogen-rich leaves. 6. Robinia pseudoacacia is host to a wide range of fungi both in the native and introduced ranges. Megaherbivores are of minor significance in Europe but browsing by ungulates occurs in the native range. Among insects, the North American black locust gall midge (Obolodiplosis robiniae) is specific to Robinia and is spreading rapidly throughout Europe. 7. In parts of Europe, Robinia pseudoacacia is considered an invasive non-indigenous plant and the tree is controlled. Negative impacts include shading and changes of soil conditions as a result of nitrogen fixation.Key-words: climatic limitation, ecophysiology, geographical and altitudinal distribution, germination, invasive, mycorrhiza, nitrogen fixation, parasites and diseases, reproductive biology, soilsFalse acacia, black locust. Fabaceae, tribe Robinieae. Robinia pseudoacacia L. is a deciduous, strongly suckering, broadleaved tree, up to 20 m high but, occasionally taller. Bark *Nomenclature of vascular plants follows Stace (2010) and, for nonBritish species, Flora Europaea.

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“…) but N content is site specific (Akamatsu et al . ). Alonso, González‐Muñoz & Castro‐Díez () compared leaf litter of R. pseudoacacia to other deciduous trees.…”

Section: Structure and Physiologymentioning

confidence: 97%

Biological Flora of the British Isles: Robinia pseudoacacia

et al. 2013

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“…Boreal riparian zones are usually lowcompetition ecosystems, which is why non-native plants may be able to outcompete native species, and lead to significant shifts in vegetation composition (Figure 7). Common traits of invasive species, such as high biomass production, large stature, nitrogen fixation or high transpiration rates, may in turn change community structure, such as vertical biomass distribution, suppress processes such as germination, and affect ecosystem fluxes and functions, such as soil N or water availability (Figure 3; Akamatsu et al, 2011;Simberloff, 2011;Ruwanza et al, 2013;Catford and Jansson, 2014). In addition, non-native invertebrates, fungi and micro-organisms can become pests, parasites or pathogens and damage native vegetation as such (Kominoski et al, 2013;Lapin et al, 2021).…”

Section: Non-native Speciesmentioning

confidence: 99%

Pressures on Boreal Riparian Vegetation: A Literature Review

2022

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Riparian zones are species-rich and functionally important ecotones that sustain physical, chemical and ecological balance of ecosystems. While scientific, governmental and public attention for riparian zones has increased over the past decades, knowledge on the effects of the majority of anthropogenic disturbances is still lacking. Given the increasing expansion and intensity of these disturbances, the need to understand simultaneously occurring pressures grows. We have conducted a literature review on the potential effects of anthropogenic pressures on boreal riparian zones and the main processes that shape their vegetation composition. We visualised the observed and potential consequences of flow regulation for hydropower generation, flow regulation through channelisation, the climate crisis, forestry, land use change and non-native species in a conceptual model. The model shows how these pressures change different aspects of the flow regime and plant habitats, and we describe how these changes affect the extent of the riparian zone and dispersal, germination, growth and competition of plants. Main consequences of the pressures we studied are the decrease of the extent of the riparian zone and a poorer state of the area that remains. This already results in a loss of riparian plant species and riparian functionality, and thus also threatens aquatic systems and the organisms that depend on them. We also found that the impact of a pressure does not linearly reflect its degree of ubiquity and the scale on which it operates. Hydropower and the climate crisis stand out as major threats to boreal riparian zones and will continue to be so if no appropriate measures are taken. Other pressures, such as forestry and different types of land uses, can have severe effects but have more local and regional consequences. Many pressures, such as non-native species and the climate crisis, interact with each other and can limit or, more often, amplify each other’s effects. However, we found that there are very few studies that describe the effects of simultaneously occurring and, thus, potentially interacting pressures. While our model shows where they may interact, the extent of the interactions thus remains largely unknown.

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“…and flow into the Sea of Japan [36]. The riverbed consists mainly of cobbles (64-256 mm) with fine sediment deposits (< 2 mm in diameter) [37]. The D 60 (grain diameter at 60% passing the grain size distribution curve) is 50-60 mm [36].…”

Section: Study Sitesmentioning

confidence: 99%

Insights from long-term variations in gravel riverbed topography as an indicator of vegetation–morphology interactions

et al. 2020

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Flooding shapes the fluvial landforms by interacting with the development of riparian vegetation. However, the quantitative evaluation of the effects of flooding on fluvial landscapes often relies on snapshot physical parameters regarding hydrological processes, as typified by shear stress on the bed surface. Flooding events over time regulate riparian vegetation, and introducing a long-term perspective into river environmental assessment could complement understanding the vegetation-morphology interactions. In this study, we estimated the long-term variations in channel topography (geomorphological variations) of a gravel riverbed of the Chikuma River. We used cross-sectional profiles of the river channel from 1959 to 2010 as an indicator of vegetation-morphology interactions and examined the effects of geomorphological variations on the fluvial landscape. Our results show that boreal and herbaceous vegetated areas had significant smaller geomorphological variations than those with active channels and gravel bars in the river. Temporal changes in the elevation of the river channel reduced after riparian vegetation was established and riverbed stabilisation could enable riparian forests to develop. We, therefore, identify geomorphological variations as an explanatory factor for fluvial landforms. The index could support river management with a long-term view of channel evolution with vegetation-morphology interaction.

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Nitrogen stocks in a riparian area invaded by N-fixing black locust (Robinia pseudoacacia L.)

Cited by 13 publications

References 37 publications

Biological Flora of the British Isles: Robinia pseudoacacia

Biological Flora of the British Isles: Robinia pseudoacacia

Pressures on Boreal Riparian Vegetation: A Literature Review

Insights from long-term variations in gravel riverbed topography as an indicator of vegetation–morphology interactions

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