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Hydraulic strategy defines contrasting responses to an abrupt precipitation during a successive lethal drought.
BMC Plant Biol
November 2024
NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, China.
Article Synopsis
- The study explores how two tree species, anisohydric Robinia pseudoacacia and isohydric Quercus acutissima, react to sudden precipitation changes during drought, focusing on gas exchange, growth, and carbohydrate patterns.
- Anisohydric R. pseudoacacia sacrifices leaves under stress, leading to decreased photosynthesis and non-structural carbohydrate (NSC) accumulation, while isohydric Q. acutissima maintains leaf integrity and NSC stability by reducing respiration.
- The findings suggest that R. pseudoacacia's efficient water transport and growth come at the cost of embolism resistance, whereas Q. acutissima's resource-saving approach may enhance
Divergent trajectories of regeneration in early-successional forests after logging and wildfire.
Ecol Appl
November 2024
Fenner School of Environment & Society, ANU College of Science, The Australian National University, Canberra, Australian Capital Territory, Australia.
Article Synopsis
- * The study investigates how three disturbance types—clearcut logging with slash burning, severe wildfire with salvage logging, and severe wildfire alone—impact early-successional forests in southeastern Australia over 14 years.
- * Results show that wildfire-affected forests recover more robustly in plant diversity and structure compared to those impacted by clearcut and salvage logging, the latter negatively impacting plant richness for over a decade.
Wood nutrients: Underexplored traits with functional and biogeochemical consequences.
New Phytol
December 2024
Center for Plant Conservation, Escondido, CA, 92027, USA.
Resource storage is a critical component of plant life history. While the storage of nonstructural carbohydrates in wood has been studied extensively, the multiple functions of mineral nutrient storage have received much less attention. Here, we highlight the size of wood nutrient pools, a primary determinant of whole-plant nutrient use efficiency, and a substantial fraction of ecosystem nutrient budgets, particularly tropical forests.
View Article and Find Full Text PDFPlant fire-adaptive traits mediate long-term fire recurrence impact on the potential supply capacity of ecosystem services and their resilience.
J Environ Manage
August 2024
Department of Biodiversity and Environmental Management, Faculty of Biological and Environmental Sciences, University of León, 24071, León, Spain; Institute of Environmental Research (IMA), University of Léon, 24007, León, Spain.
Fire-induced changes in vegetation composition due to fire-regime intensification are leading to alterations in ecosystem services that might threaten their future sustainability. Fire recurrence, in particular, could be a key driver shaping ecosystem service resilience in fire-prone ecosystems. This study evaluates the impact of fire recurrence, over twenty-four years, on the potential supply capacity of ten regulating, provisioning, and cultural services selected as critical services by stakeholders and experts.
View Article and Find Full Text PDFCoupled hydraulics and carbon economy underlie age-related growth decline and revitalisation of sand-fixing shrubs after crown removal.
Plant Cell Environ
August 2024
CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.
Crown removal revitalises sand-fixing shrubs that show declining vigour with age in drought-prone environments; however, the underlying mechanisms are poorly understood. Here, we addressed this knowledge gap by comparing the growth performance, xylem hydraulics and plant carbon economy across different plant ages (10, 21 and 33 years) and treatments (control and crown removal) using a representative sand-fixing shrub (Caragana microphylla Lam.) in northern China.
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