Functional and ecosystem service differences between tree species: implications for tree species replacement

Mitchell, Ruth J.; Hewison, Richard L.; Haghi, Reza; Robertson, Andrew; Main, A.; Owen, I. J.

doi:10.1007/s00468-020-02035-1

Cited by 5 publications

(4 citation statements)

References 37 publications

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“…As such, bears may be adopting habitat-mediated strategies so that they do not need to adopt nocturnal patterns in order to avoid the higher human pressure 33,35,67 . Furthermore, extensive use of beech forests at higher altitudes 61,62 , which are highly efficient in temperature regulation 68 , may allow Apennine bears to reduce heat stress during summer, and therefore to maintain their activity rhythms also during this period 24 .…”

Section: Discussionmentioning

confidence: 99%

Circadian activity of small brown bear populations living in human-dominated landscapes

Donatelli

Mastrantonio

Ciucci

2022

Sci Rep

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Whereas numerous studies on large carnivores have focused on analyzing spatial patterns and habitat use, the temporal dimension of their activity has been relatively little investigated, making this a topic of growing interest, especially in human-dominated landscapes. Relict and isolated Apennine brown bears (Ursus arctos marsicanus) have been living in a human-modified landscape since millennia, but no information is available on their activity patterns. By means of GPS telemetry (26,880 GPS locations collected from 18 adult Apennine brown bears) we investigated their circadian rhythms, using hourly movement rates as an index of bear activity. Based on a Bayesian modeling approach, circadian activity of Apennine brown bears was described by a bimodal curve, with peaks of activity around sunrise and sunset. We revealed seasonal effects, with bears exhibiting higher movement rates throughout the mating season, but no relevant influence of sex. In addition, bears increased their movement rate at distances < 100–500 m to roads and settlements exclusively during spring and late summer, suggesting a trade-off between foraging opportunities and risk avoidance. The absence of a marked nocturnality in Apennine brown bears suggests a relatively low degree of habitat encroachment and disturbance by humans. Yet, the occurrence of crepuscular activity patterns and the responses in proximity of anthropogenic landscape features likely indicate a coadaptation by bears to human presence through a shift in their temporal niche. Further studies should aim to unveil fitness implications of such modifications in activity patterns.

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Section: Discussionmentioning

confidence: 99%

Circadian activity of small brown bear populations living in human-dominated landscapes

Donatelli

Mastrantonio

Ciucci

2022

Sci Rep

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“…Thus, some non‐natives, particularly those of the same genera, may be suitable substitute phorophytes. However, in some instances non‐native trees have been shown to impact on other aspects of biodiversity (e.g., ground flora), and ecosystem functioning (e.g decomposition and nutrient cycling; Ennos et al 2019; Mitchell et al 2021); factors which should be taken into account when considering the establishment of non‐natives.…”

Section: Discussionmentioning

confidence: 99%

Identifying substitute host tree species for epiphytes: The relative importance of tree size and species, bark and site characteristics

Mitchell

Hewison

Beaton

et al. 2021

Applied Vegetation Science

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Questions Can bark characteristics be used to determine the suitability of trees to host epiphytic bryophytes and lichens or are other tree and site characteristics more important? Identification of substitute hosts is required in the face of epidemic tree deaths due to diseases that are a threat to affiliated epiphytic communities. We assess the suitability of seven phorophytes to host the epiphytes associated with the UK native oak species, Quercus petraea and Quercus robur, which are currently threatened by a range of pests and pathogens. Location Six botanic gardens and arboreta across the UK. Method We recorded the site, habitat, tree (height, diameter at breast height [1.3 m; DBH], percentage canopy cover) and bark characteristics (pH, conductivity, density, water‐holding capacity, hardness, topography) and epiphytic community composition on Acer pseudoplatanus, Castanea sativa, Fagus sylvatica, Fraxinus excelsior, Quercus cerris, Quercus petraea, Quercus robur, Quercus rubra and Tilia × europaea. In total 230 trees were surveyed across the six sites. Results Comparisons between all trees showed significant correlations between similarities in community composition and bark characteristics. However, “tree characteristics” (species, height, DBH and canopy over) explained more of the variation in epiphytic community composition than bark and site characteristics. Phorophytes with similar epiphytic community richness or composition to native oaks did not necessarily have similar bark characteristics. Non‐native oaks and the non‐native hybrid Tilia × europaea supported similar epiphyte communities to the native oaks and are suggested as substitute phorophytes. Conclusion Using bark traits is not a reliable method to assess the suitability of substitute phorophytes to conserve epiphytic communities. Instead, the epiphytes hosted by a wider range of phorophytes should be recorded to allow an assessment of their suitability as substitute hosts and hence aid management decisions on replacement phorophytes following tree loss.

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“…After that, the collected information was input into the i-Tree model to calculate its low-carbon value results (since there was no Nuttall oak in the model species, we referred to the practice of other scholars and chose a similar species of the same genus to replace it [7]). Studies by many scholars have shown that tree species and sizes are the most important factors affecting the ecosystem service value of a single tree [38][39][40][41]. Based on this, the self-measured database can be associated with the SMLMIS database.…”

Section: Estimation Of the Low-carbon Contribution Of Urban-suburban Street Treesmentioning

confidence: 99%

“…Studies by many scholars have shown that tree species and sizes are the most important factors affecting the ecosystem service value of a single tree [38][39][40][41]. Based on this, the self-measured database can be associated with the SMLMIS database.…”

Section: Estimation Of the Low-carbon Contribution Of Urban-suburban Street Treesmentioning

confidence: 99%

Optimization of Ecosystem Services of Shanghai Urban–Suburban Street Trees Based on Low-Carbon Targets

et al. 2021

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Road traffic carbon emissions are an important cause of global warming, and street trees play an important role in regulating road carbon emissions. During urbanization, major differences in the planting management modes and growth status of the street trees in urban–suburban gradient may exist, leading to significant differences in the low-carbon values of the street trees in urban–suburban gradient. Based on this, this study took two typical urban–suburban gradient zones in Shanghai as an example to analyze the changes in the characteristics of street tree species, planting density, tree sizes, and low-carbon contribution with urban and rural changes, and proposed strategies for optimizing the low-carbon contribution of urban street trees. The results showed that, from the inner ring to the outer ring and the suburban ring, the proportion of London plane tree gradually changed from 82% to 11%, and the proportion of the camphor tree gradually changed from 9% to 70%; the average DBH of the trees gradually decreased from 28.81 to 23.74 cm. The number of plantings per unit road length gradually increased, and the number of plantings per unit area gradually decreased; therefore, the average low-carbon contribution of urban–suburban street trees is not significant, but the low-carbon contribution of upper street trees per unit area is higher, and suburban unit street trees have a higher low-carbon contribution. Finally, this article proposes different optimization strategies for future urban micro-renewal and suburban new-city construction.

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Functional and ecosystem service differences between tree species: implications for tree species replacement

Cited by 5 publications

References 37 publications

Circadian activity of small brown bear populations living in human-dominated landscapes

Circadian activity of small brown bear populations living in human-dominated landscapes

Identifying substitute host tree species for epiphytes: The relative importance of tree size and species, bark and site characteristics

Optimization of Ecosystem Services of Shanghai Urban–Suburban Street Trees Based on Low-Carbon Targets

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