Influence of species functional strategy on leaf stoichiometric responses to fertilizer in a Bornean heath forest

Sellan, Giacomo; Thompson, Jill; Majalap, Noreen; Brearley, Francis Q.

doi:10.1111/1365-2745.13865

Cited by 6 publications

(10 citation statements)

References 91 publications

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“…As we measured only wet inorganic N deposition and were unable to consider organic N and dry deposition (which can be equal to or exceed wet N deposition), it is likely that the total N deposition in our study site exceeds the critical load of 10-15 kg N ha −1 year −1 , that is proposed as potentially damaging to temperate forests [38]. This is relevant because heath forest, a forest typology widespread throughout the tropics, is possibly limited by soil N, similar to temperate forests [43,44]. Heath forest, thus, could have a critical load similar to temperate forests.…”

Section: Discussionmentioning

confidence: 92%

Assessment of Wet Inorganic Nitrogen Deposition in an Oil Palm Plantation-Forest Matrix Environment in Borneo

et al. 2023

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Nitrogen (N) deposition significantly affects forest dynamics, carbon stocks and biodiversity, and numerous assessments of N fluxes and impacts exist in temperate latitudes. In tropical latitudes, however, there are few such assessments. In this study, we measured the inorganic N concentration (wet deposition) deposited in rainfall and rainfall pH throughout one year at the boundary of a forest reserve in Malaysian Borneo. We considered that the N deposition may be either from forest and agricultural fires or derived from agricultural fertiliser. Therefore, we determined the wind trajectories using the HYSPLIT model provided by NOAA, the location of fires throughout the landscape throughout one year using NASA’s FIRM system, and obtained the land use cover map of Malaysia and Indonesia. We then correlated our monthly cumulative wet N deposition with the cumulative number of fires and the cumulative area of oil palm plantation that wind trajectories arriving at our study site passed over before reaching the rainfall sampling site. At 7.45 kg N ha−1 year−1, our study site had the highest annual wet inorganic N deposition recorded for a Malaysian forest environment. The fire season and the cumulative agricultural area crossed by the winds had no significant effect on N deposition, rainfall N concentration, or rainfall pH. We suggest that future research should use 15N isotopes in rainfall to provide further information on the sources of N deposition in tropical forests such as this.

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Section: Discussionmentioning

confidence: 92%

Assessment of Wet Inorganic Nitrogen Deposition in an Oil Palm Plantation-Forest Matrix Environment in Borneo

et al. 2023

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“…SLA is closely related to resource availability, such as nutrients, water, heat, and light (e.g., [ 69 – 71 ]). The relationship between SLA and nitrogen concentration depends on soil nutrition status, environmental factors, and plant species (e.g., [ 14 , 72 , 73 ]). In the current study, we found strong associations of SLA with N mass rather than N area (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…1 ), meaning that larger and thinner leaves had a lower N concentration at the base of the leaf area than smaller and thicker leaves. This reflects the trade-off between leaf growth and N investment [ 39 , 73 ]. Lower SLA is generally associated with higher natural resource efficiency, such as WUE and NUE, under stressful conditions and thus can be recognized as a strategy of phenotypic regulation [ 38 , 74 ].…”

Section: Discussionmentioning

confidence: 99%

“…For instance, on PCA plane B, the dimension (upper left to lower right, ‘N mass –SLA’, the former is more strongly associated with PC2 than PC1, whereas the latter reverses the trend) ranges from species with conservative leaves (low-SLA, nitrogen-poor) to species with acquisitive leaves (nitrogen-rich, high-SLA, high- A area ) that would have a shorter leaf lifespan and lower survival when facing environmental stress [ 22 , 28 , 46 , 47 , 77 ]. The two species, N. pectinate and T. terrestris, may be proxies of the two contrasting species, conservative and acquisitive, and which one can prosper more may strongly depend on different climate change scenarios [ 73 , 74 ]. The coordination and trade-offs between traits—whether and how the LES performs—may strongly depend on plant species, PFTs, ecosystems, and environmental conditions (e.g., [ 36 , 69 , 78 – 80 ]).…”

Section: Discussionmentioning

confidence: 99%

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Coordination of leaf functional traits under climatic warming in an arid ecosystem

Chen

Zhou

et al. 2022

BMC Plant Biol

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Background Climatic warming is increasing regionally and globally, and results concerning warming and its consequent drought impacts have been reported extensively. However, due to a lack of quantitative analysis of warming severities, it is still unclear how warming and warming-induced drought influence leaf functional traits, particularly how the traits coordinate with each other to cope with climatic change. To address these uncertainties, we performed a field experiment with ambient, moderate and severe warming regimes in an arid ecosystem over 4 years. Results Severe warming significantly reduced the specific leaf area and net photosynthetic rate with a relatively stable change and even enhancement under moderate warming, especially showing species-specific performance. The current results largely indicate that a coordinated trade-off can exist between plant functional traits in plant communities in a dryland ecosystem under ambient temperature conditions, which is strongly amplified by moderate warming but diminished or even eliminated by severe warming. Based on the present findings and recent results in the relevant literature, we advance the ecological conceptual models (e.g., LES and CSR) in the response to climatic warming in arid grassland communities, where the few key species play a crucial role by balancing their functional performances to cope with environmental change. Conclusion Our results highlight the importance of coordination and/or trade-off between leaf functional traits for understanding patterns of climatic change-induced vegetation degradation and suggest that the plant community composition in these drylands could be shifted under future climate change.

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“…The term kerangas, derived from the language of the local Iban community, refers to the infertile nature of the soil that prevents rice from growing (Brunig 1974;Whitmore 1984). Kerangas forests occur on weathered coastal alluvium and sandstone which give rise to nutrient-poor and acidic soils (Wong and Kamariah 1999;Wong et al 2015a;Sellan 2019). The sandy soils are porous and have high permeability which results in welldrained soils (Brunig 1974;Ghazoul and Sheil 2010;Jaafar et al 2016;Adanan et al 2020).…”

Section: Heath Forest Formations In Borneomentioning

confidence: 99%

Review: Diversity, structure, and community composition of Bornean heath forest with a focus on Brunei Darussalam

IKBAL,

DIN,

H. Tuah

et al. 2023

Biodiversitas

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Abstract. Ikbal IM, Din HHM, Tuah WH, Jaafar SM, Ahmad N, Sukri RS. 2023. Review: Diversity, structure, and community composition of Bornean heath forest with a focus on Brunei Darussalam. Biodiversitas 24: 2814-2829. Tropical heath forests, a unique lowland forest ecosystem with high conservation value, are increasingly threatened by disturbances. Heath forests are characterized by trees of short stature and the presence of highly acidic, sandy soils with poor nutrient content. Bornean heath forests are widely studied for their diversity, structure, and community composition and are known to support endemics of high conservation value. Environmental factors and soil properties, such as topography, water availability, and nutrient status, are known to influence tree species diversity and forest structure of Bornean forests. However, factors influencing their community composition, including the role of seedling communities in influencing heath forest communities, are still not well understood. In particular, studies of tree diversity and community composition of heath forests in Brunei Darussalam have revealed high endemism and the presence of species with high conservation value. Anthropogenic threats to Bornean heath forests highlight the urgent need for an increased understanding of these forests and prioritization of their conservation. Increased insights into the ecological preferences of heath forest species are crucial for the successful restoration of degraded heath forests. The intact forest ecosystems of Brunei could provide opportunities for further ecological research on the plant communities found in these unique forests.

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Influence of species functional strategy on leaf stoichiometric responses to fertilizer in a Bornean heath forest

Cited by 6 publications

References 91 publications

Assessment of Wet Inorganic Nitrogen Deposition in an Oil Palm Plantation-Forest Matrix Environment in Borneo

Assessment of Wet Inorganic Nitrogen Deposition in an Oil Palm Plantation-Forest Matrix Environment in Borneo

Coordination of leaf functional traits under climatic warming in an arid ecosystem

Review: Diversity, structure, and community composition of Bornean heath forest with a focus on Brunei Darussalam

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