Seasonal variation in soil and plant water potentials in a Bolivian tropical moist and dry forest

Markesteijn, Lars; Iraipi, José; Bongers, Frans; Poorter, Lourens

doi:10.1017/s0266467410000271

Cited by 65 publications

(64 citation statements)

References 68 publications

(131 reference statements)

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“…Moreover, they probably benefit from crests, which provide more high-light canopy gap sites than valleys. Additionally, in those canopy gaps the loss of a large transpiring canopy may locally create higher levels of water availability (44), although this outcome was less clear for our site (29). Hence, even for the studied dry forest, acquisitive species might be more limited by light than by water and be confined to the brighter light conditions of the crests.…”

Section: Consequences Of Species Performance For Species Distributionmentioning

confidence: 87%

“…The water gradient was characterized by the soil water potential running from −6 to 0 MPa, which covers most soil water variation in this forest (29). Carbon gain was calculated as the gross photosynthesis minus the maintenance respiration costs.…”

Section: Methodsmentioning

confidence: 99%

“…Instead, acquisitive species had a lower water index (Fig. 3B), indicating that they are associated with dry crests where soil water availability is low (29,30). Because acquisitive species do not have deeper roots (27), they probably do not have access to deeper water sources than conservative species (44).…”

Section: Consequences Of Species Performance For Species Distributionmentioning

confidence: 98%

“…We considered the different carbon gain responses across species support for functional divergence and different distributions as evidence for niche separation. We applied this approach to a subsample of 13 species of a tree sapling community of a dry tropical forest, where saplings are expected to be limited by both shade and drought (29,30).…”

mentioning

confidence: 99%

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Functional traits determine trade-offs and niches in a tropical forest community

Sterck

Markesteijn

Schieving

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

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238

204

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How numerous tree species can coexist in diverse forest communities is a key question in community ecology. Whereas neutral theory assumes that species are adapted to common field conditions and coexist by chance, niche theory predicts that species are functionally different and coexist because they are specialized for different niches. We integrated biophysical principles into a mathematical plant model to determine whether and how functional plant traits and trade-offs may cause functional divergence and niche separation of tree species. We used this model to compare the carbon budget of saplings across 13 co-occurring dry-forest tree species along gradients of light and water availability. We found that species ranged in strategy, from acquisitive species with high carbon budgets at highest resource levels to more conservative species with high tolerances for both shade and drought. The crown leaf area index and nitrogen mass per leaf area drove the functional divergence along the simulated light gradient, which was consistent with observed species distributions along light gradients in the forest. Stomatal coordination to avoid low water potentials or hydraulic failure caused functional divergence along the simulated water gradient, but was not correlated to observed species distributions along the water gradient in the forest. The trait-based biophysical model thus explains how functional traits cause functional divergence across species and whether such divergence contributes to niche separation along resource gradients.

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Section: Consequences Of Species Performance For Species Distributionmentioning

confidence: 87%

Section: Methodsmentioning

confidence: 99%

Section: Consequences Of Species Performance For Species Distributionmentioning

confidence: 98%

mentioning

confidence: 99%

See 2 more Smart Citations

Functional traits determine trade-offs and niches in a tropical forest community

Sterck

Markesteijn

Schieving

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

238

204

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“…For many deciduous species growth is only initiated after the sprouting of new leaves, as shown for Celtis africana in Ethiopia (KREPKOWSKI et al, 2011). Markesteijn et al (2010) also highlight the difference of tolerance and leaf phenology associated with soil water potential that suffers influence of temporal variation, mainly depending on the annual rainfall cycle and spatial variation that results from topography and vertical distribution of water in soil layers.…”

Section: Tenuiflora Grew At Least 44% More In the Open Areas Withmentioning

confidence: 79%

CLIMATE-TREE GROWTH RELATIONSHIPS OF Mimosa tenuiflora IN SEASONALLY DRY TROPICAL FOREST, BRAZIL

Mattos

Braz

Domene

et al. 2015

CERNE

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Mimosa tenuiflora is a native pioneer tree from the Caatinga used commercially as firewood due to its high calorific value. It is deciduous, its trunk does not reach large diameters and it has good regrowth capacity. This study intended to determine the annual increment in diameter of M. tenuiflora and its correlation with rainfall, as basis for fuel wood management. Disks from the stem base of M. tenuiflora trees were collected in 2008 in Sertânia and Serra Talhada, Pernambuco State, from regrowth of trees coppiced in 2003 and in Limoeiro do Norte, Ceará State, from a plantation established in 2002. The trees have well-defined annual growth rings, highly correlated with annual precipitation and are well-suited for dendrochronological investigations. Forest managers must consider the influence of previous drier years in the wood production when predicting fuel wood harvesting. The high growth correlation with the previous year's rainfall in regions where the rains start after photoperiodic stimulation indicate the necessity of understanding the growth dynamics of the species under dry forest conditions through additional ecophysiology studies. RELAÇÃO CLIMA-CRESCIMENTO DE ÁRVORES DE Mimosa tenuiflora EM FLORESTA TROPICAL SECA SAZONAL, BRAZILRESuMO: Mimosa tenuiflora é uma árvore pioneira e nativa da Caatinga usada, comercialmente, para lenha, em razão do seu elevado poder calorífico. É decídua, com perda de folhas no final da estação chuvosa, seu tronco não atinge grandes diâmetros e tem boa capacidade de rebrota. Este estudo tem por objetivo determinar o incremento anual em diâmetro de M. tenuiflora e sua correlação com a precipitação, visando a subsidiar o manejo florestal de madeira para energia. Discos da base do tronco de árvores de M. tenuiflora foram coletados em 2008, em

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Rainfall seasonality and drought performance shape the distribution of tropical tree species in Ghana

Amissah

Mohren

Kyereh

et al. 2018

Ecology and Evolution

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Tree species distribution in lowland tropical forests is strongly associated with rainfall amount and distribution. Not only plant water availability, but also irradiance, soil fertility, and pest pressure covary along rainfall gradients. To assess the role of water availability in shaping species distribution, we carried out a reciprocal transplanting experiment in gaps in a dry and a wet forest site in Ghana, using 2,670 seedlings of 23 tree species belonging to three contrasting rainfall distributions groups (dry species, ubiquitous species, and wet species). We evaluated seasonal patterns in climatic conditions, seedling physiology and performance (survival and growth) over a 2‐year period and related seedling performance to species distribution along Ghana's rainfall gradient. The dry forest site had, compared to the wet forest, higher irradiance, and soil nutrient availability and experienced stronger atmospheric drought (2.0 vs. 0.6 kPa vapor pressure deficit) and reduced soil water potential (−5.0 vs. −0.6 MPa soil water potential) during the dry season. In both forests, dry species showed significantly higher stomatal conductance and lower leaf water potential, than wet species, and in the dry forest, dry species also realized higher drought survival and growth rate than wet species. Dry species are therefore more drought tolerant, and unlike the wet forest species, they achieve a home advantage. Species drought performance in the dry forest relative to the wet forest significantly predicted species position on the rainfall gradient in Ghana, indicating that the ability to grow and survive better in dry forests and during dry seasons may allow species to occur in low rainfall areas. Drought is therefore an important environmental filter that influences forest composition and dynamics. Currently, many tropical forests experience increase in frequency and intensity of droughts, and our results suggest that this may lead to reduction in tree productivity and shifts in species distribution.

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Seasonal variation in soil and plant water potentials in a Bolivian tropical moist and dry forest

Cited by 65 publications

References 68 publications

Functional traits determine trade-offs and niches in a tropical forest community

Functional traits determine trade-offs and niches in a tropical forest community

CLIMATE-TREE GROWTH RELATIONSHIPS OF Mimosa tenuiflora IN SEASONALLY DRY TROPICAL FOREST, BRAZIL

Rainfall seasonality and drought performance shape the distribution of tropical tree species in Ghana

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