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11 results for “woody flora”
Woodiness and succulence of the Canary Islands flora
<p class="MsoNormal"><span><strong>Aim</strong>: Oceanic islands possess unique floras with high proportions of endemic species. Island floras are expected to be severely affected by changing climatic conditions as species on islands have limited distribution ranges, small population sizes and face the constraints of insularity to track their climatic niches. We aimed to assess how ongoing climate change affects the range sizes of oceanic island plants, identifying species of particular conservation concern.</span></p> <p class="MsoNormal"><span><strong>Location</strong>: Canary Islands, Spain.</span></p> <p class="MsoNormal"><span><strong>Methods</strong>: We combined species occurrence data from single-island endemic, archipelago endemic and non-endemic native plant species of the Canary Islands with data on current and future climatic conditions. Bayesian Additive Regression Trees were used to assess the effect of climate change on species distributions; 71% (n = 502 species) of the native Canary Island species had models deemed good enough. To further assess how climate change affects plant functional strategies, we collected data on woodiness and succulence.</span></p> <p class="MsoNormal"><span><strong>Results</strong>: Single-island endemic species were projected to lose a greater proportion of their climatically suitable area (x̃ = ‑0.36) than archipelago endemics (x̃ = ‑0.28) or non-endemic native species (x̃ = ‑0.26), especially on Lanzarote and Fuerteventura, which are expected to experience less annual precipitation in the future. Moreover, herbaceous single-island endemics were projected to gain less and lose more climatically suitable area than insular woody single-island endemics. In contrast, we found that succulent single-island endemics and non-endemic natives gain more and lose less climatically suitable area.</span></p> <p class="MsoNormal"><span><strong>Main</strong> <strong>conclusions</strong>: While all native species are of conservation importance, we emphasise single-island endemic species not characterised by functional strategies associated with water use efficiency. Our results are particularly critical for other oceanic island floras that are not constituted by such a vast diversity of insular woody species as the Canary Islands.</span></p>
Woodiness and succulence of the Canary Islands flora
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Phylogenetic conservatism and coordination in traits of Chinese woody endemic flora
<p><span>The dataset contains 5 files, including:</span></p> <p><span><span>(1)<span> </span></span></span><span>“HLS. new” is a phylogenetic tree constructed with 1,387 species, we used Taxa01, Taxa02 in the phylogenetic tree construction process (refer to Taxa match species file). <strong>Please note</strong> that I marked <strong>outgroups</strong> (9 species) in yellow color, you may use “drop tips” function in R to delete them if it’s extra info for you;</span></p> <p><span><span>(2)<span> </span></span></span><span>“Taxa match species” , Taxa name are corresponding to “HLS. new”;</span></p> <p><span><span>(3)<span> </span></span></span><span>“OGU” is a species occurrence file, each gridcell could be regard as “community”, which we can use to analysis species assembling; </span></p> <p><span>Gridcell in this file corresponding to the Operational Geographic Units (OGUs). Species occurrence matrix were prepared according to Silva et al.'s (Cardoso da Silva, Cardoso de Sousa, & Castelletti, 2004) method: (a) To leverage the size effect, study area was divided into 50*50 km2 grid cells, covering the land area of China including Taiwan; (b) assign species occurrence into each grid cell; (c) delimit OGUs where contains at least two endemic species and land area covered more than half of grid cells (1,250 km<sup>2</sup>).</span></p> <p><span><span>(4)<span> </span></span></span><span>“Climate”. bio 1-19 were download from CHELSA: https://chelsa-climate.org/timeseries/; (Karger et al., 2017; Karger, Nobis, Normand, Graham, & Zimmermann, 2021). I also attached the description for chelsa.</span></p> <p><span> </span></p> <p><span><span>(5)<span> </span></span></span><span>“Trait”. We tried our best to access to the information regarding to leaf length, height and seed diameter. For few cases, you may still find N.A. data. I believe it’s very common in macroecology research.</span></p>
Text-fig. 9. Lower part of a fossil woody stem in the tuffaceous beds at Siziman. in Mid-Latitude Palaeogene Floras Of Eurasia Bound To Volcanic Settings And Palaeoclimatic Events - Experience Obtained From The Far East Of Russia (Sikhote-Alin') And Central Europe (Bohemian Massif)
Text-fig. 9. Lower part of a fossil woody stem in the tuffaceous beds at Siziman.
Leaf habit, maximum height, and wood density of tropical woody flora in Africa: Phylogenetic constraints, covariation, and responses to seasonal drought
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Data from: Functional diversity and composition of Caatinga woody flora are negatively impacted by chronic anthropogenic disturbance
Tropical plant assemblages can be taxonomically and phylogenetically impoverished by chronic anthropogenic disturbance (CAD), such as firewood collection and extensive grazing. However, to what extent the functional dimension responds to CAD is still unclear. Such knowledge is urgently required for predicting, preventing or even reversing the impacts of CAD. Chronic anthropogenic disturbance may operate as an ecological filter by selecting functional trait values (e.g. low wood density), thereby altering the functional composition and diversity of plant assemblages. We tested this hypothesis using 29 woody plant assemblages across three ontogenetic stages (seedlings, saplings and adults) in a 220‐km2 landscape of the Caatinga, northeast Brazil. We adopted a CAD index consisting of four indicators (proximity to urban centre and houses and the density of both people and livestock) and tested how well it explained the functional diversity and effect sizes (richness, evenness and dispersion) and composition (community‐weighted mean). Chronic anthropogenic disturbance affected several functional metrics across the three ontogenetic stages. However, CAD effects were stronger in adult communities by negatively affecting functional richness, dispersion and their effect sizes. CAD also altered the functional composition of leaf mass per area, woody density and leaf area of adult assemblages. Sapling communities were affected in terms of functional composition (leaf area, leaf dry matter and wood density), with positive and negative effects, while seedling assemblages responded positively to CAD only in terms of functional evenness and its effect size. Some changes in functional metrics were influenced by dominant Euphorbiaceae species across ontogenetic stages, especially in terms of leaf area and woody density. Synthesis. Chronic anthropogenic disturbance is an important driver of plant‐community functional organization across ontogenetic stages in the Caatinga. Adult assemblages are particularly sensitive and tend to lose functional niche space and support more acquisitive rather than conservative strategies as chronic anthropogenic disturbance increases. The proliferation of Euphorbiaceae disturbance‐adapted species can explain part of the community responses to chronic anthropogenic disturbance. Our findings highlight the ecological effects of chronic anthropogenic disturbance and show that it is a key influence on tropical biotas. Changes in plant functional traits associated with plant resource use are likely to affect ecosystem functioning and services provided by Caatinga.
Data from: Climatic niche lability but growth form conservatism in the African woody flora
<p><span>Climatic niche evolution during the diversification of tropical plants has received little attention in Africa. To address this, we characterized the climatic niche of >4000 tropical African woody species, distinguishing two broad bioclimatic groups (forest vs. savanna) and six subgroups. We quantified niche conservatism </span><span>versus</span><span> lability at the genus level and for higher clades, using a molecular phylogeny of >800 genera. Although niche stasis at speciation is prevalent, numerous clades individually cover vast climatic spaces suggesting a general ease in transcending ecological limits, especially across bioclimatic subgroups. </span><span>The forest biome was the main source of diversity, providing many lineages to savanna, but reverse shifts also occurred. </span><span>We identified clades that diversified in savanna after shifts from forest. </span><span>The forest-savanna transition was not consistently associated with a growth form change, though we found evolutionarily labile clades whose presence in forest or savanna is associated respectively with climbing or shrubby species diversification.</span></p>
Data from: Functional diversity and composition of Caatinga woody flora are negatively impacted by chronic anthropogenic disturbance
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Data from: Woody flora types to describe phytogeographic units: an insight along a west–east transect in central Italy
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Data from: Climatic niche lability but growth form conservatism in the African woody flora
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Data from: Spring predictability explains different leaf-out strategies in the woody floras of North America, Europe and East Asia
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