Rotten to the core? Drivers of the vertical profile and accumulation of internal tree stem damage DOI Creative Commons
Abbey R. Yatsko, Habacuc Flores‐Moreno,

M Fitzgerald

и другие.

Functional Ecology, Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Abstract Trees are important above‐ground carbon sinks in savanna ecosystems, yet consumption of internal wood by decomposers (e.g. termites and microbes) creates uncertainties tree biomass accounting. It remains unclear whether stem damage is constant or variable throughout the tree, making it uncertain if a single sample reflects through tree. Furthermore, total location likely influenced external pressures (i.e. termites, microbes fire), species traits diameter at breast height [DBH], density) their interactions. We sampled lower (<2 m) trees North Queensland, Australia to examine vertical profile proportional absolute amounts damage. compared estimates from single‐sample method, assuming damage, with multi‐sample test how well one represented stem. investigated accumulated differently due DBH, density susceptibility fire scarring termite presence). Finally, we tested differentially affected this was mediated DBH density. The amount, but not proportion, decreased higher position on There no difference between methods. Species‐specific variation Total greatest large trees, particularly those presence. presence, scarring, differed among most occur large, dense trees. demonstrated that effectively captured Although accumulation rates increasing were consistent, suggesting general relationship. By integrating influence traits, our findings underscore importance considering these elements for accurately estimating stored biomass. Read free Plain Language Summary article Journal blog.

Язык: Английский

Global field collection data confirm an affinity of brown rot fungi for coniferous habitats and substrates DOI Creative Commons
Hunter J. Simpson, Carrie Andrew, Inger Skrede

и другие.

New Phytologist, Год журнала: 2024, Номер 242(6), С. 2775 - 2786

Опубликована: Апрель 3, 2024

Summary Unlike ‘white rot’ (WR) wood‐decomposing fungi that remove lignin to access cellulosic sugars, ‘brown (BR) selectively extract sugars and leave behind. The relative frequency distribution of these fungal types (decay modes) have not been thoroughly assessed at a global scale; thus, the fate one‐third Earth's aboveground carbon, wood lignin, remains unclear. Using c . 1.5 million sporocarp 30 tree records from publicly accessible databases, we mapped compared decay mode type (conifer vs angiosperm) distributions. Additionally, mined record metadata assess substrate specificity per mode. average for BR proportion (BR/(BR + WR records)) was 13% geographic variation positively correlated ( R 2 = 0.45) with conifer trees (conifer/(conifer angiosperm records)). Most species (61%) were conifer, rather than (22%), specialists. reverse true (conifer: 19%; angiosperm: 62%). Global patterns predicted greater accuracy using distributions individual 0.82), type. Fungal can be explained by and, more importantly, distributions, which our data suggest is due strong specificities.

Язык: Английский

Процитировано

4
Wood trait–decay relationships vary with topography and rainfall seasonality in a subtropical forest in China DOI Open Access
Donghao Wu, Yong Chen, M. D. Farnon Ellwood

и другие.

Journal of Ecology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 11, 2025

Abstract Plant traits affect wood decomposition. Far less acknowledged, trait–decay relationships may vary with environmental conditions that alter the spatiotemporal distribution of decomposer activities. Unfavourable environments can suppress activities and weaken relationships. We hypothesize waterlogged soils in valley during rainy season decrease termite decomposition rates, especially palatable deadwood. By comparison, could be affected at ridge hilltop season. conducted decay experiments 137 tree species three sites (valley/ridge/hilltop) differing microclimate a 50‐ha plot subtropical forest. Eight physical chemical were measured to determine most influential properties for feeding rates. Samples harvested after or whole year (rainy‐plus‐dry season). Mass loss volume (i.e. activities) first harvest attributed season, while difference between two harvests dry found mass decreased by soil waterlogging but not on hilltop. Wood density predominantly controlled loss, its negative effects appeared only Notably, warmer temperatures accelerated causing similar final as higher elevation sites. Synthesis . Our study reveals are mediated trait changes directly, also via variations indirectly. Moreover, does strictly follow elevational temperature gradients due rainfall lower elevation. future droughts reduce accelerate wood, particularly valleys. concerned deadwood carbon stocks once become C source under droughts, regions where termites dominant decomposers.

Язык: Английский

Процитировано

0
Wood decomposition in poorly-drained forested wetland soils: how important are termites? DOI
Mary Beth Adams, Chris A. Miller, Gregory W. McCarty

и другие.

Soil Biology and Biochemistry, Год журнала: 2025, Номер unknown, С. 109754 - 109754

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Invasive termites and their growing global impact as major urban pests DOI Creative Commons
Thomas Chouvenc

Current Opinion in Insect Science, Год журнала: 2025, Номер unknown, С. 101368 - 101368

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Rotten to the core? Drivers of the vertical profile and accumulation of internal tree stem damage DOI Creative Commons
Abbey R. Yatsko, Habacuc Flores‐Moreno,

M Fitzgerald

и другие.

Functional Ecology, Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Abstract Trees are important above‐ground carbon sinks in savanna ecosystems, yet consumption of internal wood by decomposers (e.g. termites and microbes) creates uncertainties tree biomass accounting. It remains unclear whether stem damage is constant or variable throughout the tree, making it uncertain if a single sample reflects through tree. Furthermore, total location likely influenced external pressures (i.e. termites, microbes fire), species traits diameter at breast height [DBH], density) their interactions. We sampled lower (<2 m) trees North Queensland, Australia to examine vertical profile proportional absolute amounts damage. compared estimates from single‐sample method, assuming damage, with multi‐sample test how well one represented stem. investigated accumulated differently due DBH, density susceptibility fire scarring termite presence). Finally, we tested differentially affected this was mediated DBH density. The amount, but not proportion, decreased higher position on There no difference between methods. Species‐specific variation Total greatest large trees, particularly those presence. presence, scarring, differed among most occur large, dense trees. demonstrated that effectively captured Although accumulation rates increasing were consistent, suggesting general relationship. By integrating influence traits, our findings underscore importance considering these elements for accurately estimating stored biomass. Read free Plain Language Summary article Journal blog.

Язык: Английский

Процитировано

0