scholarly journals Patterns of richness, diversity and abundance of an odonate assemblage from a tropical dry forest in the Santiago Dominguillo Region, Oaxaca, México (Insecta: Odonata)

2021 ◽  
Vol 9 ◽  
Author(s):  
Enrique González-Soriano ◽  
Felipe Noguera ◽  
Cisteil Pérez-Hernández ◽  
Santiago Zaragoza-Caballero ◽  
Leonardo González-Valencia
Keyword(s):  
Tropical Dry Forest ◽  
Temporal Patterns ◽  
The State ◽  
Dry Forest ◽  
Monthly Precipitation ◽  
Taxonomic Distinctness ◽  
Shannon Diversity ◽  
Positive Correlations ◽  
Phylogenetic Divergence ◽  
First Time

A study on the patterns of richness, diversity and abundance of the Odonata from Santiago Dominguillo, Oaxaca is presented here. A total of 1601 specimens from six families, 26 genera and 50 species were obtained through monthly samplings of five days each. Libellulidae was the most diverse family (21 species), followed by Coenagrionidae (19), Gomphidae (4) and Calopterygidae (3). The Lestidae, Platystictidae and Aeshnidae families were the less diverse, with only one species each. Argia was the most speciose genus with 11 species, followed by Enallagma, Hetaerina, Erythrodiplax and Macrothemis with three species each and Phyllogomphoides, Brechmorhoga, Dythemis, Erythemis and Orthemis with two species each. The remaining 17 genera had one species each. Argia pipila Calvert, 1907 and Leptobasis vacillans Hagen in Selys, 1877 were recorded for the first time for the state of Oaxaca. We also analysed the temporal patterns of taxonomic and phylogenetic divergence for the Santiago Dominguillo Odonata assemblage: the Shannon diversity value throughout the year was 21.07 effective species, while the Simpson diversity was 13.17. In general, the monthly phylogenetic divergence was higher than expected for taxonomic distinctness, and lesser for average taxonomic distinctness. Monthly diversity, evenness and taxonomic divergence showed significant positive correlations (from moderate to strong) with monthly precipitation values. The analysis of our results, however, indicates that an increase in rainfall not only influences the temporal diversity of species, but also the identity of supraspecific taxa that constitute those temporal assemblages, i.e. there is an increase in temporal phylogenetic divergence.

scholarly journals New Occurrences of Social Wasps (Hymenoptera: Vespidae) in Semideciduous Seasonal Montane Forest and Tropical Dry Forest in Minas Gerais and in the Atlantic Forest in the State of Rio de Janeiro

2015 ◽  
Vol 8 (1) ◽  
pp. 65-68 ◽  
Author(s):  
Marcos Magalhães Souza ◽  
Epifânio Porfiro Pires ◽  
Rafael Eugênio ◽  
Reinildes Silva-Filho
Keyword(s):  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Tropical Dry Forest ◽  
Montane Forest ◽  
Social Wasps ◽  
Minas Gerais ◽  
The State ◽  
Dry Forest ◽  
First Time ◽  
New Occurrences

The occurrence of Mischocyttarus consimilis Zikán, Mischocyttarus ignotus Zikán, Mischocyttarus nomurae Richards and Mischocyttarus paraguayensis Zikán for the state of Minas Gerais and Mischocyttarus garbei Zikán for the state of Rio de Janeiro are registered for the first time, collected through active search and attractive traps. Novos Registros de Vespas Sociais (Hymenoptera: Vespidae) em Floresta Estacional Semidecidual Montana e Mata Seca em Minas Gerais e na Mata Atlântica no Estado do Rio de Janeiro Resumo. Neste trabalho é registrado pela primeira vez a ocorrência de Mischocyttarus consimilis Zikán, Mischocyttarus ignotus Zikán, Mischocyttarus nomurae Richards e Mischocyttarus paraguayensis Zikán para o estado de Minas Gerais e Mischocyttarus garbei Zikán para o estado do Rio de Janeiro coletadas por meio de busca ativa e armadilhas atrativas.

scholarly journals Camerobiid mites (Acariformes: Raphignathina: Camerobiidae) inhabiting epiphytic bromeliads and soil litter of tropical dry forest with analysis of setal homology in the genus Neophyllobius

2016 ◽  
Author(s):  
Ricardo Paredes-León ◽  
Angélica María Corona-López ◽  
Alejandro Flores-Palacios ◽  
Víctor Hugo Toledo-Hernández
Keyword(s):  
New Species ◽  
Forest Floor ◽  
Tropical Dry Forest ◽  
Morphological Characters ◽  
Dry Forest ◽  
The Third ◽  
Adult Females ◽  
Three New Species ◽  
First Time ◽  
Epiphytic Bromeliads

A survey of the camerobiid mites living on epiphytic bromeliads and the forest floor of a Mexican tropical dry forest was carried out. We found three new species of the genus Neophyllobius, which are described in this paper; the first two, namely N. cibyci sp. nov. and N. tepoztlanensis sp. nov., were both found inhabiting bromeliads (Tillandsia spp.) and living on two tree species (Quercus obtusata and Sapium macrocarpum); the third, N. tescalicola sp. nov., was found in soil and litter under Q. obtusata. These three new species can be differentiated from other species in the genus by a combination of morphological characters in adult females, mainly those setae on femora and genua I. The idiosoma and leg setal ontogeny of a camerobiid mite is presented for the first time in this paper, illustrating chaetotaxic notations and their relative positions in N. cibyci sp. nov. larva, protonymph and adults (female and male), and establishing setal homologies among instars. Setal homology with other species in the cohort Raphignathina is briefly discussed. Additionally, a compilation and an identification key to all known species of camerobiid mites in Mexico is provided.

Revised morphological descriptions of Otatea nayeeri and O. transvolcanica (Poaceae: Bambusoideae: Guaduinae) and a reproductive key to Otatea

Phytotaxa ◽  
2019 ◽  
Vol 422 (1) ◽  
pp. 1-8
Author(s):  
EDUARDO RUIZ-SANCHEZ ◽  
ARTURO CASTRO-CASTRO ◽  
JUAN PABLO ORTIZ-BRUNEL
Keyword(s):  
Geographical Distribution ◽  
Cloud Forest ◽  
Tropical Dry Forest ◽  
First Record ◽  
The State ◽  
Dry Forest ◽  
Oak Forest ◽  
Flowering Pattern ◽  
Herbarium Material ◽  
Eleven Species

Otatea, with 12 described species, is the second most diverse genus in the subtribe Guaduinae. Eleven species of Otatea occur in Mexico, of which 10 are endemic. The Mexican Otatea species grow in tropical dry forest, the ecotone between tropical dry forest and oak forest, cloud forest, humid oak-pine forest, and xerophilous scrubs. Here, we describe the synflorescence and flowers of Otatea nayeeri and O. transvolcanica, based on newly collected specimens and review of existing herbarium material. We present a key based on the flowering characters of the Mexican Otatea species, and provide expanded morphological descriptions and illustrations of O. nayeeri and O. transvolcanica. Otatea nayeeri and O. transvolcanica do not exhibit the gregarious monocarpic flowering pattern that has been recorded for other Otatea species. A flowering individual of O. transvolcanica was observed being visited by a Lasioglossum (Dialictus) sp. (Halictidae) bee. This is the first record for Otatea being visited by bees. The geographical distribution of O. nayeeri is extended northwards to the state of Durango in Mexico.

scholarly journals New records of Tropical Dry Forest´s mammals from the State of Mexico

2004 ◽  
Vol 6 (1) ◽  
pp. 90
Author(s):  
Cuauhtémoc Chávez Tovar ◽  
Gerardo Jorge Ceballos González
Keyword(s):  
New Records ◽  
Tropical Dry Forest ◽  
The State ◽  
Dry Forest ◽  
Palabras Clave

Palabras clave: Estado de México, registros, murciélagos, roedores, Myotis carteri.Key words: State of Mexico, records, bats, rodents, Myotis carteri.

scholarly journals La flora arbórea de Michoacán, México

2017 ◽  
pp. 47 ◽  
Author(s):  
Eva M. Cué-Bär ◽  
José Luis Villaseñor ◽  
Libertad Arredondo-Amezcua ◽  
Guadalupe Cornejo-Tenorio ◽  
Guillermo Ibarra-Manríquez
Keyword(s):  
Tree Species ◽  
Deciduous Forest ◽  
Coniferous Forest ◽  
Tropical Dry Forest ◽  
The State ◽  
Dry Forest ◽  
Tropical Deciduous Forest ◽  
Oak Forest ◽  
Vegetation Types ◽  
Geologic History

Based on the review of floristic and taxonomic literature, as well as on the examination of specimens housed at the herbaria of the Centro Regional del Bajío (IEB) and the Instituto de Biología (MEXU), we recorded 845 species, 352 genera and 100 families of trees for the state of Michoacán, Mexico. The largest numbers of species per family were recorded for Asteraceae (82), Fabaceae (74), Mimosaceae (67), Caesalpiniaceae (39) and Burseraceae (38), while at the genus level Bursera (37), Quercus (35), Lonchocarpus (19), Senna (18), and Acacia (16) are the most speciose. The genus Beiselia (Burseraceae) and 14 species (1.8 %) are strict endemics to the state. A total of 28 families (28%) and 210 genera (60%) are represented in the state only by one tree species each. The most important vegetation types according to their species richness are tropical deciduous forest (593, 70.2%), coniferous forest (336, 39.8%) and oak forest (332, 39.3%). A high proportion (69.9%) of Michoacán’s tree species is located in 2-4 vegetation types; 173 species (21.5%) have been found just in one type, mainly in the tropical dry forest (87 species, 10.3%). The floristic richness of Michoacán is largely explained by its complex geologic history, its rugged physiography, its diverse climate, and its multiple vegetation types, as well as by its location at the confluence of the Holartic and Neotropical floristic kingdoms. Counties and species on which to focus conservation efforts for trees in the state are pinponted.

Leaf-cutting ant populations profit from human disturbances in tropical dry forest in Brazil

2017 ◽  
Vol 33 (5) ◽  
pp. 337-344 ◽  
Author(s):  
Felipe F. S. Siqueira ◽  
José Domingos Ribeiro-Neto ◽  
Marcelo Tabarelli ◽  
Alan N. Andersen ◽  
Rainer Wirth ◽  
...  
Keyword(s):  
Vegetation Cover ◽  
Native Species ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Tropical Rain Forests ◽  
Rain Forests ◽  
Human Disturbances ◽  
Reverse Pattern ◽  
Leaf Cutting ◽  
First Time

Abstract:Anthropogenic disturbance often results in the proliferation of native species of particular groups that leads to biotic homogenization. Leaf-cutting ants are an example of such winner organisms in tropical rain forests, but their response to disturbance in dry forests is poorly known. We investigated Atta colony density in areas of tropical dry forest in Brazil with different distance to roads and vegetation cover. Atta colonies were surveyed in 59 belt transects of 300 × 20 m, covering a total area of 35.4 ha. We found 224 Atta colonies, 131 of which were active and belonged to Atta opaciceps (87 colonies, 2.45 ha−1), A. sexdens (35 colonies, 0.98 ha−1) and A. laevigata (9 colonies, 0.25 ha−1). The density of active colonies sharply decreased from 15 ± 2.92 ha−1 in the 50-m zone along roads to only 2.55 ± 1.65 ha−1 at distances up to 300 m. The reverse pattern was observed for inactive colonies. Active Atta colonies preferentially occur in areas with low vegetation cover, while inactive colonies prefer areas with high vegetation cover. We demonstrate for the first time that anthropogenic disturbances promote the proliferation of leaf-cutting ants in dry forest in Brazil, which may affect plant regeneration via herbivory and ecosystem engineering as demonstrated for rain forests.

scholarly journals Pollen Resources Used by Two Species of Stingless Bees (Meliponini) in a Tropical Dry Forest of Southern Ecuador

2019 ◽  
Vol 19 (6) ◽  
Author(s):  
Fernando P Gaona ◽  
Anthony Guerrero ◽  
Elizabeth Gusmán ◽  
Carlos Iván Espinosa
Keyword(s):  
Plant Species ◽  
Stingless Bees ◽  
Tropical Dry Forest ◽  
Stingless Bee ◽  
Dry Forest ◽  
Southern Ecuador ◽  
Pollen Types ◽  
Plant Families ◽  
First Time

Abstract Pollinators are crucial for ecosystem functionality; however, little is known about the plant species used by some of these, such as stingless bees. In this study, for the first time, pollen resources used by Melipona mimetica Cockerell (Hymenoptera: Apidae: Meliponini) and Scaptotrigona sp. Moure (Hymenoptera: Apidae: Meliponini) were identified through analysis of corbicular pollen found on worker bees in a dry forest in southern Ecuador. In total, 68 pollen types were identified belonging to 31 botanical families. The most represented plant families were Fabaceae (16%), Malvaceae (7%), and Boraginaceae (7%). Both stingless bee species exhibited a polylectic behavior, with an average of 16 pollen types collected by individual bees. Differences in abundances of pollen types collected by each species indicated distinct uses for these two bee species.

scholarly journals La selva baja caducifolia en una corriente de lava volcánica en el centro de Veracruz: lista florística de la flor vascular

2017 ◽  
pp. 77
Author(s):  
Gonzalo Castillo-Campos ◽  
Patricia Dávila-Aranda ◽  
José Alejandro Zavala-Hurtado
Keyword(s):  
Volcanic Activity ◽  
Vascular Plants ◽  
Growth Form ◽  
Tropical Dry Forest ◽  
The State ◽  
Dry Forest ◽  
La Selva ◽  
Diverse Families ◽  
Forest Flora ◽  
Rock Formations

Currently, the tropical dry forest found on rock formations originating from volcanic activity are the best preserved, but also the least studied in the State of Veracruz, Mexico. We recorded 104 families comprising 394 genera and 666 species and subspecies of vascular plants. These latter taxa were classified in the following growth form categories: 88 trees, 126 shrubs, 342 herbs, 80 vines and 30 epiphytes. The richest families, considering the recorded species, were Fabaceae, Poaceae, Asteraceae and Euphorbiaceae. The presence of a rich succulent component in the tropical dry forest flora was noticeable. It is conformed by 204 species and subspecies, corresponding to 30.4% of the total for such vascular taxa recorded in the study area. The highest ichness of succulent species was found in the most diverse families, such as Euphorbiaceae, Orchidaceae, Cactaceae, and Bromeliaceae.

scholarly journals Hymenochaete liliae (Agaricomycetes, Fungi), a new species from the state of Oaxaca, Mexico

2021 ◽  
Author(s):  
Magdalena Contreras Pacheco ◽  
Tania Raymundo ◽  
Leticia Pacheco ◽  
Silvia Bautista-Hernández ◽  
Ricardo Valenzuela
Keyword(s):  
New Species ◽  
Tropical Dry Forest ◽  
Optical Microscope ◽  
The State ◽  
Dry Forest ◽  
Fresh Material ◽  
The Family ◽  
Thin Walled ◽  
A New Species

Background and Aims: Hymenochaete is the genus with the highest number of species of the family Hymenochaetaceae in Mexico; 25 species have been described. It is characterized by its mainly resupinate basidiome, although it may be pileate and stipitate, of brown colors, with presence of setae and xanthocroid reaction. The objective of this study is to describe a new species of Hymenochaete.Methods: The fresh material was studied and described macro and micromorphologically, using a stereoscopic and optical microscope, taking photos in situ. Vouchers of the herbaria ENCB y FCME were studied, and specialized literature was reviewed for its description.Key results: Hymenochaete liliae sp. nov. is characterized by a resupinate, adnate, fleshy basidiome, smooth hymenophore, with numerous setae, determinate margin, abrupt, with monomitic hyphal system, simple septae; abundant subfusiform setae in the hymenium, 69-80 × 6-8 µm, acute, with crystals; and ellipsoid basidiospores, thin-walled, 5-8 × 2-3 µm. Although it resembles H. rhabarbarina, it can be differentiated by setae covered with crystals and spores of 4.8-6 × 2.3-3.3 µm. It could also be confused with H. minuscula due to its basidiome color; however, the setae are smaller (40-60 µm), as well as the basidia (15-20 µm). It can be separated from H. cinnamomea because it does not present a stratose basidiome; setae with crystals, 69-80 × 6-8 µm; basidiospores 5-8 × 2-3 µm, ellipsoidal.Conclusions: Hymenochaete liliae is proposed as a new species, which is distributed in the tropical dry forest of the state of Oaxaca, and until now only reported from the type locality.

scholarly journals Changes in forest structure and composition in a successional tropical dry forest

2017 ◽  
Vol 14 (35) ◽  
pp. 12 ◽  
Author(s):  
Sofía Calvo-Rodriguez ◽  
Julio Calvo-Alvarado ◽  
Mario M Do Espírito-Santo ◽  
Yule R. F. Nunes
Keyword(s):  
Forest Structure ◽  
Diversity Index ◽  
Tropical Dry Forest ◽  
Floristic Composition ◽  
Dry Forest ◽  
Shannon Diversity Index ◽  
Jaccard Similarity ◽  
Shannon Diversity ◽  
Complexity Index ◽  
Successional Stages

We describe changes in forest structure and floristic composition of three successional stages for Mata Seca State Park, in Minas Gerais, Brazil, through the measurement of all trees greater than 5 cm of diameter at breast height (DBH) of 18 permanent plots (6 per stage) for early, intermediate, and late successional stages of a tropical dry forest during a 5-year period. Using this information, we calculated the Importance Value Index (IVI), Holdridge Complexity Index, Jaccard Similarity Coefficient, and Shannon Diversity Index for each stage of succession. The floristic composition and structure of the successional stages expressed by the Holdridge Complexity Index, showed that complexity increases gradually as we advance through the successional stages, while the Shannon Diversity Index indicated that species diversity was higher in the intermediate stage of succession. The Jaccard Similarity Coefficients showed that the intermediate and late successional stages had high similarity, whereas the early successional stage had low similarity with these two successional stages. Mortality rates were higher in the early stage, especially in stems with smaller diameters (5-10cm). This information contributes to the dissemination of important knowledge for the conservation of the tropical dry forests of Brazil, which are the most threatened ecosystems in this country and, at the same time, the least studied.

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