A New Deciduous Species of &lt;I&gt;Pachira&lt;/I&gt; (Malvaceae: Bombacoideae) from a Seasonally Dry Tropical Forest in Northeastern Brazil

Carvalho-Sobrinho, Jefferson Guedes de; Alverson, William S.; Mota, Aline Costa da; Machado, Marlon C.; Baum, David A.

doi:10.1600/036364414x678224

Cited by 12 publications

(6 citation statements)

References 14 publications

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“…Seven sites record a rapid increase in Arecaceae (palm) and Bombacoideae (silk cotton tree and relatives) pollen (see Table ). Living species in these groups are major constituents in seasonally dry subtropical and tropical forests (Carvalho‐Sobrinho et al., 2014; Joyal, 1996; Linares‐Palomino & Alvarez, 2005; Pennington et al., 2009), suggesting a shift to warmer, drier, or more seasonally dry climates during the PETM. The concurrent reduction at middle paleolatitudes of pollen with affinity to Cupressaceae (see Table ), which require wet substrates (Averyanov et al., 2009; LePage, 2003), is also consistent with a shift to drier conditions.…”

Section: Discussionmentioning

confidence: 99%

Global Changes in Terrestrial Vegetation and Continental Climate During the Paleocene‐Eocene Thermal Maximum

Korasidis

Wing

Shields

et al. 2022

Paleoceanog and Paleoclimatol

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Most studies of the response of terrestrial vegetation to climate change during the Paleocene‐Eocene Thermal Maximum (PETM) have focused on individual sites and sections. To get a broader perspective we compiled published records of terrestrial pollen and spores across the Paleocene‐Eocene transition at 38 sites around the globe. For the 10 sites with quantitative data PETM palynofloras were largely distinct in composition from those in the latest Paleocene or post‐PETM early Eocene. We also inferred paleoclimatic conditions at each site from the distributions of nearest living relatives (NLRs) of fossil pollen taxa among present‐day Köppen climate types. The NLRs of Paleocene high‐paleolatitude palynotaxa are most diverse in cooler climates, whereas the NLRs of PETM taxa are more diverse in warmer, wetter climates. At middle‐paleolatitudes NLRs of Paleocene palynotaxa are most diverse in warm, wet climates, whereas NLRs of PETM palynotaxa are most diverse in warm, seasonally dry climates. In the tropics there is little change from Paleocene to PETM in the climate distributions of NLRs. We compared changes in paleoclimate reconstructed from the Köppen distributions of the NLRs with those simulated from the Community Earth System Model (version CESM1.2). Paleoclimatic changes during the PETM inferred from palynological proxies are mostly consistent with modeled climate changes, including the expansion of temperate climates at the expense of cold climate types at high‐paleolatitudes and the expansion of temperate and tropical climates in middle‐paleolatitudes. Despite this concordance, modeled winter temperatures in continental interiors and high‐paleolatitudes remain colder than those reconstructed from NLR distributions.

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Section: Discussionmentioning

confidence: 99%

Global Changes in Terrestrial Vegetation and Continental Climate During the Paleocene‐Eocene Thermal Maximum

Korasidis

Wing

Shields

et al. 2022

Paleoceanog and Paleoclimatol

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“…Location of conservation units of the Raso da Catarina Ecoregion, state of Bahia, Brazil (Varjão et al 2013, modified). , Gibbs & Semir 2003, Carvalho-Sobrinho 2006, Cristóbal 2006, Duarte 2006, Róndon & Campos 2006, Cruz & Esteves 2009, Rondón 2009and Carvalho-Sobrinho et al 2014, protologues and images of type specimens. Morphological descriptions followed Harris & Harris (2001) and Gonçalves & Lorenzi (2011).…”

Section: Methodsmentioning

confidence: 99%

“…Endemic to Brazil, Pachira endecaphylla is widely distributed in the states of Espírito Santo and Rio de Janeiro, where it occurs in seasonal forest environments. It has also been recorded in the states Alagoas, Bahia, Pernambuco, Rio Grande do Norte, Piauí, Sergipe and Tocantins (Carvalho-Sobrinho et al 2014, Duarte 2015b. In the RCE the species was encountered only in the municipality of Jeremoabo in an area of anthropized Caatinga.…”

Section: Pachira Aquaticamentioning

confidence: 95%

Bombacoideae, Byttnerioideae, Grewioideae and Helicterioideae (Malvaceae s.l.) in the Raso da Catarina Ecoregion, Bahia, Brazil

2019

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This work presents a floristic survey of the subfamilies Bombacoideae, Byttnerioideae, Grewioideae and Helicterioideae (Malvaceae s.l.) in the Raso da Catarina Ecoregion (RCE), Bahia, Brazil. The samples analyzed were collected from September 2013 to May 2015. The analyses were supplemented with dried collections kept in the herbaria: ALCB, HRB, HUEFS, HUNEB, HST, IPA, PEUFR, R and RB. The identifications were based mainly on specialized bibliographies, protologues, types and herbaria collections. Ten genera and 22 species of the subfamilies were recorded, nine endemic to Brazil. Waltheria L. was the most representative genus with five species, followed by Ceiba Mill. and Melochia L. with three species each, Helicteres L., Luehea Willd., Pachira Aubl. and Pseudobombax Dugand presented two species each and other genera were represented by one species each. Among the species recorded, Luehea candicans Mart. represents a new record for the Caatinga biome. The species most commonly found in the study area were Helicteres velutina K.Schum., Melochia tomentosa L., Waltheria brachypetala Turcz., W. indica L. and W. rotundifolia Schrank. The taxonomic treatment includes identification key, descriptions, illustrations, photos, geographical distribution, reproductive phenology and comments about all studied species. Keywords: biodiversity, Caatinga, morphology, semiarid, taxonomy.

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“…These analyses, however, also suggest that Eriotheca and Pachira as currently circumscribed are not monophyletic, and further molecular and taxonomic sampling is necessary to resolve the relationships between these two genera (Carvalho-Sobrinho et al 2016). Until such sampling is completed, it would be premature to place Eriotheca in synonymy with Pachira and as a consequence new species have been described in both genera while maintaining their traditional circumscriptions Carvalho-Sobrinho 2013;Carvalho-Sobrinho et al 2014b, 2015Macedo et al 2018).…”

Section: Introductionmentioning

confidence: 97%

A new species of Eriotheca (Malvaceae, Bombacoideae) from coastal areas in northeastern Brazil

Carvalho-Sobrinho¹,

Mota²,

Dorr³

2020

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A new species of Eriotheca (Malvaceae, Bombacoideae) from coastal areas in the northeastern Brazilian states of Alagoas and Bahia is described and illustrated. Eriotheca alversonii inhabits Atlantic coastal forest and is found principally on sandy soils in restinga vegetation. It is most similar morphologically to E. parvifolia. Both species have 3-foliolate leaves and short petioles on fertile branches, but the new species has smaller flowers, truncate to crenulate calyces, and smaller globose to subglobose capsules. The affinities of E. alversonii to morphologically similar species and its phenology are discussed. A distribution map and preliminary assessment of its conservation status are provided.

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A New Deciduous Species of <I>Pachira</I> (Malvaceae: Bombacoideae) from a Seasonally Dry Tropical Forest in Northeastern Brazil

Cited by 12 publications

References 14 publications

Global Changes in Terrestrial Vegetation and Continental Climate During the Paleocene‐Eocene Thermal Maximum

Global Changes in Terrestrial Vegetation and Continental Climate During the Paleocene‐Eocene Thermal Maximum

Bombacoideae, Byttnerioideae, Grewioideae and Helicterioideae (Malvaceae s.l.) in the Raso da Catarina Ecoregion, Bahia, Brazil

A new species of Eriotheca (Malvaceae, Bombacoideae) from coastal areas in northeastern Brazil

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