Unexpected Large Photosynthetic Thermal Plasticity of Montane Andean Trees DOI Creative Commons
Mirindi Eric Dusenge, Sebastián González‐Caro, Zorayda Restrepo

и другие.

Global Change Biology, Год журнала: 2025, Номер 31(5)

Опубликована: Май 1, 2025

ABSTRACT Tropical forests play a significant role in global carbon sequestration. However, our understanding of how tropical tree species adjust to climate warming remains limited studies on seedlings grown pots and highly controlled growth conditions. To reduce this knowledge gap, we used field experiment with 5‐year‐old juvenile trees 12 naturally co‐occurring dominant Andean montane lowland growing three common gardens established along natural thermosequence the Andes. Based few previous studies, hypothesized that would exhibit weaker photosynthetic thermal acclimation capacity compared counterparts. Our results showed can thermally acclimate net photosynthesis by shifting their optimum ( T opt ) 0.6°C per 1°C warming. This strong shift was correlated simultaneous shifts apparent parameters V cmax J max ), which increased 0.7°C resulted similar rates CO 2 assimilation between across different environments. At last, at temperature explained 30% variation relative two groups suggest physiological among should be considered when predicting future impacts plant communities.

Язык: Английский

Nature’s wake-up call: forest adaptation cannot keep pace with climate change DOI
Tao Xu, Lei Yu

Journal of Forestry Research, Год журнала: 2025, Номер 36(1)

Опубликована: Апрель 10, 2025

Язык: Английский

Процитировано

0
Variation in Leaf C, N, and P Stoichiometric Characteristics of Populus euphratica Communities in a Desert Riparian Ecosystem of Northwest China DOI Creative Commons
Xiaolong Zhang,

X H Liu,

Lijiang Shi

и другие.

Nitrogen, Год журнала: 2025, Номер 6(2), С. 35 - 35

Опубликована: Май 16, 2025

Despite extensive research on how climate and environmental factors influence leaf stoichiometry at national global scales, experimental evidence their effects the community level remains limited, particularly in extremely arid regions. Herein, we investigated including carbon (C), nitrogen (N), phosphorus (P) along a fine-scale riparian gradient (50–1250 m from riverbank) an Populus euphratica forest northwest China. Our results show that community-averaged total (TC), (TN), (TP) contents were 442.58 mg/g, 21.69 1.18 respectively. The C:N, C:P, N:P ratios 20.74, 379.97, 18.43, Compared to findings other studies, P. exhibited lower TC TP but higher TN content ratios. A high ratio (mean = > 16) suggests is more susceptible limitation. Along gradient, TC, C:P increased significantly, reaching maximum (479.49 27.12, 478.06, respectively) 1250 riverbank. Conversely, contents, as well N:P, decreased significantly with increasing distance river, minimum values (17.49 0.99 17.17, 1100–1250 m. Soil available phosphorus, soil water content, bulk density, electrical conductivity influenced of community, collectively explaining 61.78% variation. Among these factors, had most pronounced effect, surpassing shaping stoichiometric characteristics. indicate fine spatial distribution nutrients seem be predominantly by local-scale such nutrient levels, salt stress; forests would experiencing negative impacts due droughts or stress.

Язык: Английский

Процитировано

0
Unexpected Large Photosynthetic Thermal Plasticity of Montane Andean Trees DOI Creative Commons
Mirindi Eric Dusenge, Sebastián González‐Caro, Zorayda Restrepo

и другие.

Global Change Biology, Год журнала: 2025, Номер 31(5)

Опубликована: Май 1, 2025

ABSTRACT Tropical forests play a significant role in global carbon sequestration. However, our understanding of how tropical tree species adjust to climate warming remains limited studies on seedlings grown pots and highly controlled growth conditions. To reduce this knowledge gap, we used field experiment with 5‐year‐old juvenile trees 12 naturally co‐occurring dominant Andean montane lowland growing three common gardens established along natural thermosequence the Andes. Based few previous studies, hypothesized that would exhibit weaker photosynthetic thermal acclimation capacity compared counterparts. Our results showed can thermally acclimate net photosynthesis by shifting their optimum ( T opt ) 0.6°C per 1°C warming. This strong shift was correlated simultaneous shifts apparent parameters V cmax J max ), which increased 0.7°C resulted similar rates CO 2 assimilation between across different environments. At last, at temperature explained 30% variation relative two groups suggest physiological among should be considered when predicting future impacts plant communities.

Язык: Английский

Процитировано

0