Tree species richness influence productivity and anatomical characteristics in mixed fir-pine-beech forests

Kara, Ferhat; Keleş, Seray Özden

doi:10.1007/s11258-023-01315-3

Cited by 3 publications

(4 citation statements)

References 63 publications

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“…The strong and geographically consistent association found between stem density and basal area aligns with previous research (Ligot et al, 2018, Schietti et al, 2016, Sagar and Singh, 2006, Kara and Keleş, 2023, but it stands in contrast to the assumption that competition leads to self-thinning processes (Westoby, 1984, Ali et al, 2019. It is important to note that these processes unfold over time, and forest age has been found to influence biomass (Fang et al, 2014).…”

Section: Discussionsupporting

confidence: 87%

“…However, Ligot et al (2018) found no support for this theory in old-growth tropical forests, suggesting that local factors might also be involved. Additionally, analyses of forest structure across different environments found a positive relationship between stem density and biomass, contrary to self-thinning predictions (Schietti et al, 2016, Sagar and Singh, 2006, Kara and Keleş, 2023.…”

Section: Introductioncontrasting

confidence: 77%

“…Although subsequent studies have largely confirmed this model (e.g., Potter andWoodall, 2014, Mittelbach et al, 2001), within homogeneous habitats the relationship between species richness and biomass can be positive, linear, or non-existent (Guo and Berry, 1998). A positive association between tree diversity and forest biomass, measured as either aboveground biomass, productivity, or basal area, has been found in different habitats (Huang et al, 2018, Vilà et al, 2007, Kara and Keleş, 2023, Noreika et al, 2019, Mensah et al, 2016, across large geographic areas encompassing multiple forest types (Liang et al, 2007, Vilà et al, 2013, Paquette and Messier, 2011, and in global studies (Liang et al, 2016), although the latter's methods have been criticized (Dormann et al, 2019). Equally unresolved is the effect of species evenness, which describes the distribution of the abundance of individuals across species.…”

Section: Introductionmentioning

confidence: 94%

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Tree species richness and evenness affect forest biomass differently across biogeographic regions

Ondei,

Buettel,

Aandahl

et al. 2023

Preprint

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The relationship between tree species diversity, measures of forest structure, and forest biomass has long been debated, with local- or continental-scale studies often finding contrasting results. Given the importance of forests as global carbon sinks, understanding the characteristics that underpin biomass accumulation is thus a critical component of mitigating climate change. Here we present a global analysis of 11,400 forest plots, sourced from scientific publications and forest inventories, to investigate the association of forest basal area (used as a proxy for biomass) with stem density and measures of tree species diversity (richness and evenness). We used generalised additive models to account for the confounding effects of climate and spatial signal and we modelled the density, climate, and diversity effects both globally and for each biogeographic region. Stem density showed a strong positive association with basal area across all biogeographic regions, while the effect of species richness varied. In the Palearctic, Nearctic, and Neotropical biogeographic regions, basal area was positively associated with species richness, although this was only detectable for lower values of basal area. In the Ethiopian and Oriental biogeographic regions there was no relationship between richness and basal area, while in the Australian biogeographic regions it was negative. The weak-to-no association between species evenness and basal area in all bioregions other than Australia suggests that the overall correlation emerges from processes operating at more local scales. Our results highlight the importance of accounting for biogeographic processes when evaluating strategies to mitigate climate change and support nature conservation.

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Section: Discussionsupporting

confidence: 87%

Section: Introductioncontrasting

confidence: 77%

Section: Introductionmentioning

confidence: 94%

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Tree species richness and evenness affect forest biomass differently across biogeographic regions

Ondei,

Buettel,

Aandahl

et al. 2023

Preprint

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“…The variations in previously reported results and those of the current work could be related to both the species of chestnut tree and the different regional climatic conditions; the spread of C. parasitica could vary depending on the requirements of the chestnut tree. These variations may also be related to tree species richness since disease incidence generally increases with tree diversity in broad‐leaved tree species (Kara & Keleş, 2023; Koricheva et al., 2006; Nguyen et al., 2016). In our study site, there were more heterospecific neighbours with the C. sativa trees at 200–400 m, compared with at 400–600 m.…”

Section: Discussionmentioning

confidence: 99%

Chestnut blight (Cryphonectria parasitica (Murr.) Barr) disease incidence and its effect on the morphological and anatomical features of Castanea sativa trees

Keleş,

Ünal,

Akan

et al. 2024

Forest Pathology

Self Cite

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Sweet chestnut (Castanea sativa) is an ecologically and economically valuable tree species worldwide. Various pathogens, both endemic or introduced, cause severe damage or death to chestnut trees. Chestnut blight, caused by the fungus Cryphonectria parasitica, is one of the most devastating plant diseases known which influences chestnut trees in all major cultivation regions. The work presented here aimed to investigate how the incidence of chestnut blight varied between trees growing at two altitudes (200–400 m vs. 400–600 m) and to determine the impact of chestnut blight on tree‐ring width, morphology and anatomy of C. sativa trees. The incidence of C. parasitica infections was greater at 200–400 m than at 400–600 m. Greater stem diameters were found at 200–400 m than at 400–600 m. There were no differences in stem diameters and heights, however, between healthy and C. parasitica infected chestnut trees. The anatomical characteristics of wood were also compared between healthy and C. parasitica‐infected chestnut trees. Fibre cell traits (length/width, lumen width, lumen area) were higher in healthy trees than in C. parasitica‐diseased trees. Vessel diameters were greater in infected compared with healthy trees. Tree ring widths and wood anatomical characteristics therefore were significantly influenced by C. parasitica infections.

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The Relationships among Tree Mixture, Management Type, Stand Density and Diameter Increment in Kazdağı Fir (Abies nordmanniana subsp. equi-trojani [Asch. & Sint. ex Boiss] Coode & Cullen) Forests

Ozcelik,

Kara

2024

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Tree mixture may increase stand productivity while forest tree density mostly negatively influence the tree growth. However, several research have indicated that the knowledge on the corelation between tree mixture and stand productivity is still limited. In this study, the relationships among tree mixture, stand type (i.e., even-aged versus uneven-aged), density and diameter increment of Kazdağı fir (Abies nordmanniana subsp. equi-trojani [Asch. & Sint. ex Boiss] Coode & Cullen) were examined. The research was conducted within the Ayancık Forest Management Directorate, Sinop Regional Directorate of Forestry. Four different stands were selected; a) uneven-aged fir stand, b) even-aged fir stand, c) uneven-aged mixed fir-beech stand, and d) even-aged mixed fir-beech stand. Five-year diameter increment in these four different stand types was determined and compared. Random effects regression analysis was utilized to examine the influence of the mixture and tree density on the diameter increment. Statistical relationships were found among tree mixture, stand density and the diameter increment (p

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Tree species richness influence productivity and anatomical characteristics in mixed fir-pine-beech forests

Cited by 3 publications

References 63 publications

Tree species richness and evenness affect forest biomass differently across biogeographic regions

Tree species richness and evenness affect forest biomass differently across biogeographic regions

Chestnut blight (Cryphonectria parasitica (Murr.) Barr) disease incidence and its effect on the morphological and anatomical features of Castanea sativa trees

The Relationships among Tree Mixture, Management Type, Stand Density and Diameter Increment in Kazdağı Fir (Abies nordmanniana subsp. equi-trojani [Asch. & Sint. ex Boiss] Coode & Cullen) Forests

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