A revision of<i>Teucrium heterophyllum</i>L'Hér.<i>(Lamiaceae)</i>with two new subspecies of the Canary Islands

Gaisberg, Markus Von

doi:10.3372/wi.30.30205

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…If the criteria proposed by von Gaisberg (2000) are accepted for T. heterophyllum, all the Madeiran taxa of Teucrium are endemic. However, a common origin seems to be unacceptable, as T. francoi is close to the other species of Teucrium gr.…”

Section: Discussionmentioning

confidence: 99%

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Teucrium francoi M. Seq., Capelo, J.C. Costa & R. Jardim, a new species of Teucrium gr. scorodonia (Lamiceae) from Madeira

Sequeira

Capelo²,

Costa

et al. 2008

Botan J Linn Soc

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Section: Discussionmentioning

confidence: 99%

“…Recently, von Gaisberg (2000) recognized the Canarian plants of T. heterophyllum as T. heterophyllum ssp. brevipilosum Gaisberg and T. heterophyllum ssp.…”

mentioning

confidence: 99%

Teucrium francoi M. Seq., Capelo, J.C. Costa & R. Jardim, a new species of Teucrium gr. scorodonia (Lamiceae) from Madeira

Sequeira

Capelo²,

Costa

et al. 2008

Botan J Linn Soc

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“…We collected data on four functional morphological traits that reflect fundamental ecological strategies of plants. Morphological trait data of the respective plant species were collected from literature sources (Hohenester & Welß, 1993;Eggli, 2002;Muer et al, 2016;Schönfelder & Schönfelder, 2018a,b), extracted from the GIFT database (Weigelt et al, 2020), measured on digitised plant specimens stored on JSTOR (www.plants.jstor.org) or GBIF (www.gbif.org) and extracted from species' descriptions (Sprague & Hutchinson, 1914;Bramwell, 1972Bramwell, , 1975Bramwell, , 1995aHansen, 1972;Stearn, 1972;de Paz, 1973de Paz, , 1977Wildpret de la Torre, 1973;Humphries, 1976;La Serna & Wildpret de la Torre, 1980;del Arco Aguilar & Acebes Ginovés, 1981;de Paz & Hernriquez, 1981;Halliday, 1986;Mendoza-Heuer, 1987;Galván & Guerra, 1988;Kilian, 1988;Liu, 1989;Boyce, 1994;Scholz & Böcker, 1996;Marrero et al, 1998;Pedrola-Monfort & Caujapé Castells, 1998;Nogales et al, 1999;del Arco Aguilar, 2000;Scholz et al, 2000;Valcárcel et al, 2001;Baudet, 2002;Gaisberg & Wagenitz, 2002;Marrero & Navarro, 2003;Montelongo et al, 2003;Upson & Andrews, 2003;Chaisongkram &...…”

Section: Appendix S22 Morphological Trait Data Collectionmentioning

confidence: 99%

Functional island biogeography and functional ecology of the Canary Islands flora

Hanz¹

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Oceanic islands only comprise a small amount of the Earth’s land area but harbour a disproportionate amount of global biodiversity. This vast diversity is not only reflected in the taxonomic uniqueness of island biota but also in the remarkable evolution of functional traits. Functional traits, i.e. measurable characteristics that strongly influence the fitness of species, determine how a species responds to its environment and can help to gain more insights into the biogeographical, ecological and evolutionary processes that have shaped island biodiversity. However, research in island biogeography has primarily focused on species richness, and knowledge of functional trait patterns on oceanic islands is scarce. Hence, in this dissertation, I have explored how trait-based approaches can increase our understanding of how biodiversity on oceanic islands assembles and how it is driven by the environment. The Canary Islands (Spain) are a particularly suitable model system to investigate patterns and drivers of biodiversity. The archipelago is characterised by a high variation in environmental heterogeneity and inhabits a unique and well-described native flora. Therefore, I have investigated five principal research questions using the flora (Spermatophytes) of the Canary Islands as a study object. First, I have analysed how climate and biogeography shape the assembly of the Canary Islands flora using a novel trait-based approach. Second, the question of whether rare climates link to functional trait distinctiveness in the native Canary Islands flora was addressed. Third, I have examined how intraspecific trait variation is represented in the native flora of oceanic islands focusing on the succulent scrub of La Palma (Canary Islands). Fourth, this dissertation investigated whether scientific floras can be reliable sources for trait data of plants native to oceanic islands. Finally, I have explored how climate change may impact the native Canary Islands flora by analysing possible climate change-induced shifts in plant species distribution and plant traits. The results of my dissertation expand the understanding of the importance of biogeography and the environment in determining the functional composition of island floras. I have assessed that traits of endemic plant species did not expand the functional trait space of the Canary Islands but were packed with the ones of non-endemic species. This result hints at a trait convergence in endemic species, possibly driven by non-adaptive speciation processes. Moreover, I have evidenced that humidity is a critical driver of functional diversity in native plant assemblages and particularly leads to a high trait convergence in arid environments via environmental filtering. In contrast, alien species have expanded the Canary Islands flora’s functional trait space. I further have shown that in contrast to native species assemblages, alien species assemblages are characterised by an increasing functional diversity with increasing aridity. This contrasting pattern of functional diversity could pose a potential risk to the native flora of the Canary Islands as a low functional diversity is expected to reduce the resilience of species assemblages to the establishment of more functionally diverse alien plant species. However, in this dissertation, I also have revealed that endemic plant species on the Canary Islands show a high intraspecific variation in arid environments, possibly as an adaptation to environmental stress. Intraspecific variation could help endemic plant species have a competitive advantage over alien species and be more resilient to environmental changes. Furthermore, in this dissertation, I have shown that scientific floras and taxonomic monographs could be used to gain information on quantitative functional traits of plants native to oceanic islands. This finding is particularly relevant for advances in trait-based research, as coverage of trait data for oceanic island floras is extremely poor in global trait databases. Hence, for some of the studies included in this dissertation, trait data were retrieved from scientific floras and taxonomic monographs and used to answer novel scientific research questions. Thus, I have used trait data from the literature to analyse the effect of climate change on the range size of plants native to the Canary Islands. Identifying plant species of particular conservation concern is critical on oceanic islands as many island species have limited distributions and small population sizes, and their niche tracking is impeded by insularity. I have revealed that single-island endemic plants gain less and lose more climatically suitable areas than archipelago endemic and non-endemic native plants due to a climate change-induced decrease in precipitation until 2100...

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Morphological Characteristics of Teucrium Species: Vegetative Morphology

Özcan

2020

Teucrium Species: Biology and Applications

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A revision ofTeucrium heterophyllumL'Hér.(Lamiaceae)with two new subspecies of the Canary Islands

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 3 publications

References 8 publications

Teucrium francoi M. Seq., Capelo, J.C. Costa & R. Jardim, a new species of Teucrium gr. scorodonia (Lamiceae) from Madeira

Teucrium francoi M. Seq., Capelo, J.C. Costa & R. Jardim, a new species of Teucrium gr. scorodonia (Lamiceae) from Madeira

Functional island biogeography and functional ecology of the Canary Islands flora

Morphological Characteristics of Teucrium Species: Vegetative Morphology

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