scholarly journals Floristic composition in deciduous tropical forest to west of Irapuato, Guanajuato

2019 ◽  
pp. 36-43
Author(s):  
Victoria Hernández-Hernández ◽  
Luis Fernando Ramos-López ◽  
Juan Gualberto Colli-Mull
Keyword(s):  
New Species ◽  
Tropical Forest ◽  
Deciduous Forest ◽  
Conservation Status ◽  
Floristic Composition ◽  
Tropical Deciduous Forest ◽  
Sampling Effort ◽  
Cedrela Odorata ◽  
Three New Species ◽  
Floristic Affinity

The flora of Irapuato has been poorly explored, because it is an area dedicated to agriculture and there are few strains of tropical deciduous forest and subtropical scrubland. The objectives of the study were to know the floristic composition in Cerro del Veinte, compare the richness of species with other locations that have the same type of vegetation and determine the conservation status of the species according to NOM-059 SEMARNAT-2010. The sampling was through free transects of approximately 1 km in the Barrancas La Escondida and El Paiste. A total of 59 families, 137 genera, 171 species and four varieties were obtained. The best represented families are Asteraceae, Fabaceae and Pteridaceae. According to the Chao 2 estimator, the sampling effort in the study area was 87%. Floristic affinity in Cerro del Veinte was greater with the Hoya de Rincón de Parangueo (38%) and Sierra de Pénjamo (32%). In addition, there are three new species reported for Guanajuato, Govenia lagenophora and Sacoila lanceolata (Orchidaceae) and Solanum edmundoi (Solanaceae). The taxa Cedrela odorata and Erythrina coralloides are included in NOM-059-SEMARNAT-2010.

Paleoecological and archaeological implications of a Late Pleistocene/Early Holocene record of vegetation and climate from the Pacific coastal plain of Panama

2003 ◽  
Vol 59 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Dolores R. Piperno ◽  
John G. Jones
Keyword(s):  
Tropical Forest ◽  
Late Pleistocene ◽  
Coastal Plain ◽  
Deciduous Forest ◽  
Early Holocene ◽  
Tropical Deciduous Forest ◽  
Human Occupation ◽  
Core Sediment ◽  
The Pacific ◽  
Holocene Record

AbstractA phytolith record from Monte Oscuro, a crater lake located 10 m above sea level on the Pacific coastal plain of Panama, shows that during the Late Pleistocene the lake bed was dry and savanna-like vegetation expanded at the expense of tropical deciduous forest, the modern potential vegetation. A significant reduction of precipitation below current levels was almost certainly required to effect the changes observed. Core sediment characteristics indicate that permanent inundation of the Monte Oscuro basin with water occurred at about 10,500 14C yr B.P. Pollen and phytolith records show that deciduous tropical forest expanded into the lake’s watershed during the early Holocene. Significant burning of the vegetation and increases of weedy plants at ca. 7500 to 7000 14C yr B.P. indicate disturbance, which most likely resulted from early human occupation of the seasonal tropical forest near Monte Oscuro and the development of slash-and-burn methods of cultivation.

 A new genus of angraecoid orchids (Orchidaceae: Angraecinae) with highly distinctive pollinaria morphology, including three new species from tropical West and Central Africa

Phytotaxa ◽  
2018 ◽  
Vol 373 (2) ◽  
pp. 99
Author(s):  
PASCAL DESCOURVIÈRES ◽  
JOÃO N. M. FARMINHÃO ◽  
VINCENT DROISSART ◽  
JEAN-YVES DUBUISSON ◽  
MURIELLE SIMO-DROISSART ◽  
...  
Keyword(s):  
New Species ◽  
New Genus ◽  
Conservation Status ◽  
Central Africa ◽  
Iucn Red List ◽  
Valid Species ◽  
Preliminary Assessment ◽  
West And Central Africa ◽  
Three New Species ◽  
Angraecoid Orchids

A recent large phylogenetic tree for the angraecoid orchids has shown that the Afrotropical genus Diaphananthe is polyphyletic with a small group of four species sister to Aerangis and Eurychone. These species have diagnostic morphological features different from any other angraecoids, notably an erose to fringed surface of the stipes and a calceiform viscidium. Diaphananthe quintasii, which has been regarded as conspecific with D. rohrii, is reinstated as a valid species and lectotypified, and Diaphananthe alfredii and Rhipidoglossum magnicalcar are put in synonymy under D. quintasii. To accommodate this group of species, along with three new taxa from West and Central Africa, a new genus named Kylicanthe is here described. Four new combinations are thus proposed, and K. bueae is chosen as the type species of the new genus and neotypified. Additionally, K. arcuata, K. cornuata, and K. perezverae are described as new species. An identification key for Kylicanthe and allied genera is presented, as well as one for the seven species in the genus. Notes on ecology and distribution in addition to a preliminary assessment of conservation status following the IUCN Red List are also provided.

New and noteworthy species of Begonia (Begoniaceae) from Vietnam and Laos

Phytotaxa ◽  
2021 ◽  
Vol 522 (2) ◽  
pp. 75-93
Author(s):  
LEONID V. AVERYANOV ◽  
MAXIM S. NURALIEV ◽  
EUGENE L. KONSTANTINOV ◽  
TATIANA V. MAISAK ◽  
YURY O. KOPYLOV-GUSKOV ◽  
...  
Keyword(s):  
New Species ◽  
New Records ◽  
Conservation Status ◽  
Lao Pdr ◽  
Three New Species

The paper provides additions to the known diversity of Begonia in Vietnam and Laos. One species new to science from Lao PDR (B. vivipara) and three new species from Vietnam (B. aspersa, B. gracilifolia, B. maculifolia) are described. Three species (B. rotundilimba, B. versicolor, B. wenshanensis) are reported as new records for the flora of Vietnam. For each species, the information on ecology, phenology, estimated conservation status and distribution is presented, as well as the relevant taxonomic notes and analytical photographic illustrations.

Three new species of Aulonemia (Poaceae: Bambusoideae) from the Brazilian Atlantic rainforest

Phytotaxa ◽  
2014 ◽  
Vol 156 (4) ◽  
pp. 235 ◽  
Author(s):  
Pedro Lage Viana ◽  
Tarciso S. Filgueiras
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Unusual Feature ◽  
Atlantic Rainforest ◽  
Habitat Distribution ◽  
Brazilian Species ◽  
In The Wild ◽  
Three New Species ◽  
Brazilian Atlantic Rainforest

Three new Brazilian species of Aulonemia, a Neotropical woody bamboo genus, are described and illustrated: Aulonemia cincta, with its distinctive corky girdles; Aulonemia prolifera, characterized, among other Brazilian congeners, by its fimbriate leaf sheaths; and Aulonemia soderstromii, with its conspicuous cluster of spreading fimbriae. These new species all propagate by amphipodial rhizomes, an unusual feature shared with the Brazilian species A. aristulata, with which they are morphologically compared. Comments about habitat, distribution, phenology, and conservation status for each species are provided, as well as photographs taken in the wild.

Two new species of Myxomycetes from a tropical deciduous forest of Mexico

Mycologia ◽  
2001 ◽  
Vol 93 (4) ◽  
pp. 744-750 ◽  
Author(s):  
Arturo Estrada-Torres ◽  
Carlos Lado ◽  
Mercedes Rodríguez-Palma
Keyword(s):  
New Species ◽  
Deciduous Forest ◽  
Tropical Deciduous Forest ◽  
Two New Species

Accessing cryptic diversity in Neotropical rattlesnakes (Serpentes: Viperidae: Crotalus) with the description of two new species

Zootaxa ◽  
2020 ◽  
Vol 4729 (4) ◽  
pp. 451-481 ◽  
Author(s):  
RUBÉN ALONSO CARBAJAL-MÁRQUEZ ◽  
JOSÉ ROGELIO CEDEÑO-VÁZQUEZ ◽  
ARELY MARTÍNEZ-ARCE ◽  
EDGAR NERI-CASTRO ◽  
SALIMA C. MACHKOUR- M’RABET
Keyword(s):  
New Species ◽  
Species Complex ◽  
Deciduous Forest ◽  
Sequence Data ◽  
Strong Support ◽  
Nuclear Gene ◽  
Tropical Deciduous Forest ◽  
Morphological Evidence ◽  
Two New Species ◽  
Crotalus Durissus

Members of the Crotalus durissus species complex are widely distributed from Mexico to Argentina in areas with mainly seasonally dry tropical deciduous forest. Although four species (C. culminatus, C. durissus, C. simus and C. tzabcan) are currently recognized, species limits remain to be tested. Previous genetic studies suggest that C. durissus and C. simus may be paraphyletic and that at least one cryptic species may be present. We analyzed 2596 bp of DNA sequence data from three mitochondrial and one nuclear gene to infer phylogenetic relationships in the Neotropical rattlesnakes. We also examined museum and wild specimens as well as captive animals to analyze morphological characters. Our results suggest that the current taxonomy of the Crotalus durissus species complex does not reflect evolutionary history. We found strong support for five independent lineages within Crotalus simus (sensu lato), with genetic and morphological evidence for three previously recognized taxa and two new species, as well as three major lineages within C. durissus that each represent species hypothesis to be tested with additional evidence. We also found support to retain C. totonacus in the Crotalus molossus species complex. We suggest conservative taxonomic changes to the complex and related species, but more evidence is needed (e.g., morphology, ecology and venom composition) to clarify relationships among species. 

Additions to the Flora of China: three new species of Elatostema (Urticaceae) from Guangxi

Phytotaxa ◽  
2013 ◽  
Vol 147 (1) ◽  
pp. 1 ◽  
Author(s):  
YI-GANG WEI ◽  
Alex Monro ◽  
WEN-TSAI WANG
Keyword(s):  
New Species ◽  
Endemic Species ◽  
Conservation Status ◽  
Guangxi Province ◽  
Flora Of China ◽  
Three New Species ◽  
Rare Endemic

Three new species are described and illustrated and their conservation status assessed: Elatostema laevicaule W.T. Wang, A.K. Monro & Y.G. Wei, E. androstachyum W.T. Wang, A.K. Monro & Y.G. Wei and E. heterocladum W.T. Wang, A.K. Monro & Y.G. Wei. All are rare endemic species from Guangxi Province, China, and are only known only from their type localities. E. laevicaule is most similar to E. filipes and is assessed as Vulnerable (VU), E. androstachyum is most similar to E. parvum and is assessed as Vulnerable (VU); E. heterocladum is most similar to both E. androstachyum and E. luxiense and is assessed as Vulnerable (VU).

Three new species of Xyris (Xyridaceae) from the Espinhaço Range, Brazil

Phytotaxa ◽  
2015 ◽  
Vol 204 (3) ◽  
pp. 213 ◽  
Author(s):  
Maria das Graças Lapa Wanderley ◽  
Nara F. O. Mota
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Similar Species ◽  
Habitat Distribution ◽  
Espinhaço Range ◽  
Acuminate Apex ◽  
Three New Species

Three new species of Xyris from Brazil are described and illustrated. Xyris nevata is characterized by bracts with conspicuous veins and a reddish androecium and gynoecium; X. pulchella also exhibits a reddish androecium and gynoecium, and is further characterized by its small size and terete to subterete leaf blades; X. rostrata has a turbinate spike and bracts with a rostrate-acuminate apex. Commentary is provided for each species on habitat, distribution, phenology and conservation status, and the new species are compared with morphologically similar species.

The amazing diversity of the genus Monospilus Sars, 1862 (Crustacea: Branchiopoda: Aloninae) in South America

Zootaxa ◽  
2017 ◽  
Vol 4242 (3) ◽  
pp. 467 ◽  
Author(s):  
FRANCISCO DIOGO R. SOUSA ◽  
LOURDES M. A. ELMOOR-LOUREIRO ◽  
ELIANA A. PANARELLI
Keyword(s):  
New Species ◽  
South America ◽  
Morphological Traits ◽  
Conservation Status ◽  
Gallery Forest ◽  
Aquatic Habitats ◽  
Food Handling ◽  
Hydromorphic Soil ◽  
Three New Species ◽  
Short Spine

The main goal of this paper is to describe three new species of the genus Monospilus Sars, 1862 (Crustacea: Cladocera). Monospilus macroerosus sp. nov. differs from other species of the genus in several peculiar morphological traits, the most striking being the presence of a saw-shaped pecten of teeth on the postabdominal claw. This species inhabits semiterrestrial habitats (wet leaf litter on hydromorphic soil from gallery forest), exhibiting adaptations related to movement and food handling in this type of habitat. Monospilus brachyspinus sp. nov. inhabits truly aquatic habitats, where lives being associated with macrophytes and submerged leaves. It may be recognized by the postabdominal claw, which is armed with proximal spinulae modified in a short spine. In Monospilus sp., the proximal spinulae are modified in a long and slender spine. So far, Monospilus sp. occurs in southern South America, while Monospilus macroerosus sp. nov. and Monospilus brachyspinus sp. nov. occur in the Cerrado biome in Brazil, in the central portion of South America. Some conclusions about the conservation status of new species also are made. 

Three new species of Peltaea (Malvaceae, Malvoideae) from the cerrado of Brazil

Phytotaxa ◽  
2016 ◽  
Vol 255 (1) ◽  
pp. 75 ◽  
Author(s):  
ALUISIO J. FERNANDES-JÚNIOR ◽  
GERLENI L. ESTEVES
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Minas Gerais ◽  
The State ◽  
Taxonomic Relationships ◽  
Distrito Federal ◽  
Three New Species

Three new species of Peltaea are described from the cerrado of Brazil: P. brasiliana from Distrito Federal, P. rupestris from the state of Minas Gerais and P. stellata from the state of Tocantins. Illustrations, comments on morphology, taxonomic relationships, and phenology are provided, as well as assessments of conservation status of the new species.

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