scholarly journals La vegetación de Isla Socorro, Archipiélago de Revillagigedo, México

2019 ◽  
Vol 84 ◽  
pp. 13 ◽  
Author(s):  
Alejandro Flores Palacios ◽  
Juan E. Martínez Gómez ◽  
Robert L. Curry
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
Vegetation Type ◽  
Cloud Forest ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Future Studies ◽  
Montane Cloud Forest ◽  
Socorro Island ◽  
Insular Region

Based on physiognomic criteria and a cluster analysis based on 90 plots (14 in prairie and grassland, 35 in shrubs, 38 in forest and 3 in secondary vegetation) we classified the vegetation of Socorro Island. In addition to coastal halophytes, we found evidence supporting eight primary vegetation types: <em>Conocarpus </em> shrubby vegetation, grassland, prairie, <em>Croton masonii </em> shrubby vegetation, <em>Pteridium-Dodonaea </em> shrub, tropical dry forest, tropical rain forest and lower montane cloud forest. Prairie and grassland associations are clearly associated with altitude. Depending on the dominant tree species, three different units could be identified within the tropical rain forest of the island. Our analysis resolved differences with previous classifications of the vegetation on Socorro Island and indicated that some shrubby vegetation, sometimes considered as a different vegetation type, represented instead early succession stages of the lower montane cloud forest. The classifi cation presented constitutes a tool to aid future studies of the flora and fauna of this insular region.

scholarly journals Madrigueras de Liomys pictus en dos selvas tropicales del Pacífico mexicano.

2009 ◽  
Vol 13 (1) ◽  
pp. 63 ◽  
Author(s):  
Yolanda Domínguez-Castellanos ◽  
Beatriz Hernandez Meza ◽  
Angeles Mendoza D. ◽  
Gerardo Ceballos González
Keyword(s):  
Seed Production ◽  
Tropical Forests ◽  
Plant Species ◽  
Deciduous Forest ◽  
Vegetation Type ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Mexican Pacific ◽  
La Selva

Resumen: Se determinó la estructura y el contenido de las madrigueras de Liomys pictus por tipo de vegetación y temporada del año, en dos selvas tropicales del Pacífico Mexicano. Se encontraron 24 madrigueras: en la selva baja la mayoría son complejas, mientras que  en la selva mediana son lineales, por consiguiente y de acuerdo a la clasificación de las madrigueras, en selva baja se presentaron madrigueras múltiples y en selva mediana madrigueras simples. De acuerdo al contenido, las de selva baja tienen en promedio una mayor cantidad de materiales en comparación a las de selva mediana. Se catalogaron un total de 248 especies de plantas de estas 50 se comparten en ambos sitios, del total de las especies se llegaron a identificar sólo 77. Las familias más representativas fueron Leguminoseae, Euphorbiaceae y Convolvulaceae. La estructura de las madrigueras no esta determinada por la temporalidad, sin embargo el contenido esta determinado con la cantidad de material almacenado aunque la producción de semillas esta definido por el patrón de fructificación que esta dado a lo largo del año.Palabras clave: Madrigueras, estructura, contenido, Liomys pictus, Jalisco, México.Abstract: We determined the structure and contents of burrows of Liomys pictus by vegetation type and season in two tropical forests of the Mexican Pacific. 24 burrows were found in the tropical dry forest and most complex, in the semi deciduous forest is linear, and therefore according to the classification of the burrows in the tropical dry forest are more numerous and simple in the semi deciduous forest. According to the content, of the tropical dry forest have on average a greater amount of material compared to the semi deciduous forest. Were categorized a total of 248 plant species of these 50 sites are shared in both the total number of species is to determine 77. The most representative families were Leguminoseae, Euphorbiaceae and Convulvolaceae. The structure of the burrows is not affected by the timing, but the content is determined with the amount of stored material but seed production is defined by the pattern of fruit that is given throughout the year.Key words: Burrows, structure, food hoarding, Liomys pictus, Jalisco, Mexico.

scholarly journals Inventario florístico del Cerro El Cebú y zonas adyacentes en la Reserva de la Biosfera El Triunfo (Polígono V), Chiapas, México

2017 ◽  
pp. 21
Author(s):  
Jorge Martínez-Meléndez ◽  
Miguel Ángel Pérez-Farrera ◽  
Oscar Farrera-Sarmiento
Keyword(s):  
Plant Communities ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Deciduous Forest ◽  
Cloud Forest ◽  
Biosphere Reserve ◽  
Red List ◽  
Tropical Deciduous Forest ◽  
Oak Forest

A total of 502 species that belong to 115 families and 301 genera were recorded for Mt. El Cebu and adjacent zones in Polygon V of the El Triunfo Biosphere Reserve. The most speciose families were Orchiclaceae, Fabaceae, Asteraceae, Bromeliaceae and polypodiaceae with 58, 29, 28, 17, and 17 species, respectively. Six plant communities were recognized in the area, among which the cloud forest was the most diverse with 234 species, followed by pine-oak fore st with 150 species, and the tropical rain forest with 127. The oak forest and the tropical deciduous forest were less diverse, with 71 and 39 species, respectively. Only 13 species are included in the Mexican red list of endangered taxa.

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 Wedding biodiversity inventory of a large and complex Lepidoptera fauna with DNA barcoding

2005 ◽  
Vol 360 (1462) ◽  
pp. 1835-1845 ◽  
Author(s):  
Daniel H Janzen ◽  
Mehrdad Hajibabaei ◽  
John M Burns ◽  
Winnie Hallwachs ◽  
Ed Remigio ◽  
...  
Keyword(s):  
Dna Barcoding ◽  
Cloud Forest ◽  
Tropical Dry Forest ◽  
Sympatric Species ◽  
Dry Forest ◽  
Full Potential ◽  
Resource Base ◽  
Biodiversity Inventory ◽  
Large Numbers ◽  
Identification Of Species

By facilitating bioliteracy, DNA barcoding has the potential to improve the way the world relates to wild biodiversity. Here we describe the early stages of the use of cox1 barcoding to supplement and strengthen the taxonomic platform underpinning the inventory of thousands of sympatric species of caterpillars in tropical dry forest, cloud forest and rain forest in northwestern Costa Rica. The results show that barcoding a biologically complex biota unambiguously distinguishes among 97% of more than 1000 species of reared Lepidoptera. Those few species whose barcodes overlap are closely related and not confused with other species. Barcoding also has revealed a substantial number of cryptic species among morphologically defined species, associated sexes, and reinforced identification of species that are difficult to distinguish morphologically. For barcoding to achieve its full potential, (i) ability to rapidly and cheaply barcode older museum specimens is urgent, (ii) museums need to address the opportunity and responsibility for housing large numbers of barcode voucher specimens, (iii) substantial resources need be mustered to support the taxonomic side of the partnership with barcoding, and (iv) hand-held field-friendly barcorder must emerge as a mutualism with the taxasphere and the barcoding initiative, in a manner such that its use generates a resource base for the taxonomic process as well as a tool for the user.

scholarly journals Pollen-based biome reconstructions for Latin America at 0, 6000 and 18 000 radiocarbon years

2009 ◽  
Vol 5 (1) ◽  
pp. 369-461 ◽  
Author(s):  
R. Marchant ◽  
S. P. Harrison ◽  
H. Hooghiemstra ◽  
V. Markgraf ◽  
J. H. van Boxel ◽  
...  
Keyword(s):  
South America ◽  
Latin American ◽  
Rain Forest ◽  
Tropical Dry Forest ◽  
Mixed Forest ◽  
Dry Forest ◽  
Pollen Data ◽  
Temperate Rain Forest ◽  
Cool Temperate ◽  
Tropical Seasonal Forest

Abstract. The biomisation method is used to reconstruct Latin American vegetation at 6000±500 and 18 000±1000 radiocarbon years before present (14C yr BP) from pollen data. Tests using modern pollen data from 381 samples derived from 287 locations broadly reproduce potential natural vegetation. The strong temperature gradient associated with the Andes is recorded by a transition from high altitude cool grass/shrubland and cool mixed forest to mid-altitude cool temperate rain forest, to tropical dry, seasonal and rain forest at low altitudes. Reconstructed biomes from a number of sites do not match the potential vegetation due to local factors such as human impact, methodological artefacts and mechanisms of pollen representivity of the parent vegetation. At 6000±500 14C yr BP 255 samples are analysed from 127 sites. Differences between the modern and the 6000±500 14C yr BP reconstruction are comparatively small. Patterns of change relative to the modern reconstruction are mainly to biomes characteristic of drier climate in the north of the region with a slight more mesic shift in the south. Cool temperate rain forest remains dominant in western South America. In northwestern South America a number of sites record transitions from tropical seasonal forest to tropical dry forest and tropical rain forest to tropical seasonal forest. Sites in Central America also show a change in biome assignment to more mesic vegetation, indicative of greater plant available moisture, e.g. on the Yucatán peninsula sites record warm evergreen forest, replacing tropical dry forest and warm mixed forest presently recorded. At 18 000±1000 14C yr BP 61 samples from 34 sites record vegetation that reflects a generally cool and dry environment. Cool grass/shrubland prevalent in southeast Brazil, Amazonian sites record tropical dry forest, warm temperate rain forest and tropical seasonal forest. Southernmost South America is dominated by cool grass/shrubland, a single site retains cool temperate rain forest indicating that forest was present at some locations at the LGM. Some sites in Central México and lowland Colombia remain unchanged in their biome assignments, although the affinities that these sites have to different biomes do change between 18 000±1000 14C yr BP and present. The "unresponsive" nature of these sites results from their location and the impact of local edaphic influence.

scholarly journals Ecology of Plant Communities in Central Mexico

2021 ◽  
Author(s):  
Joaquín Sosa-Ramírez ◽  
Vicente Díaz-Núñez ◽  
Diego R. Pérez-Salicrup
Keyword(s):  
Plant Communities ◽  
Management Practices ◽  
Diversity Index ◽  
Vegetation Type ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Mountain Forest ◽  
Central Mexico ◽  
Wiener Diversity Index ◽  
Biogeographic Provinces

In Central Mexico converge three biogeographic provinces: Altiplano sur, Sierra Madre Occidental and Costa del Pacífico. Each one of them is composed by different plant communities: Thorn Forest, Temperate Mountain Forest and Dry Tropical Forest respectively. Our objective is to show, through phytoecological analysis, the species richness, diversity and the structure of the plant communities from the Temperate Mountain Forest and from the Tropical Dry Forest. In the Temperate Mountain Forest, 50 forest species were recorded, with a Shannon Wiener diversity index H´ = 1.63 on altitudes from 2400 to 2600 m. The Whittaker β index is Bw = 7.22. In the tropical dry forest, we identified 79 plants species with a mean diversity index H´ = 3.49 on altitudes from 1951 to 2100 m. In this ecosystem the Bw index is 8.12. This study offers important information for the establishment of management practices, considering the protection status from the areas in which this vegetation type is distributed.

scholarly journals La familia Lauraceae en el sur de México: Diversidad, distribución y estado de conservación

2017 ◽  
pp. 59
Author(s):  
Francisco G. Lorea-Hernández
Keyword(s):  
Endemic Species ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Cloud Forest ◽  
Conservation Status ◽  
Nature Reserves ◽  
Southern Mexico ◽  
The Family

A survey of the diversity, distribution, and conservation status of the family Lauraceae in southern Mexico was conducted. The diversity account resulted in a list of 120 species representing 10 genera: Aiouea, Beilschmiedia, Cassytha, Cinnamomum, Licaria, Litsea, Mocinnodaphne, Nectandra, Ocotea and Persea. The states of Chiapas, Oaxaca, and Veracruz have the largest numbers of species, particularly for the cloud forest and the tropical rain forest. Endemic species account for 47.5% of the surveyed taxa, which concentrate in Chiapas, Oaxaca, and Veracruz. Only 58 of the species considered in the study are present in the system of nature reserves in southern Mexico. The general implications of these findings for the persistence of this component of the Mexican flora are discussed.

scholarly journals THE LICHENS DIVERSITY IN TRIANGULATION OF ALAS PURWO NATIONAL PARK, EAST JAVA

2015 ◽  
Vol 2 (1) ◽  
pp. 265
Author(s):  
Iin Supartinah Noer ◽  
Joko Kusmoro ◽  
Erwan Yudiar Darussalam ◽  
Dwi Nur Laksono ◽  
Aan Abdul Hakim
Keyword(s):  
Forest Ecosystem ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
National Park ◽  
Cloud Forest ◽  
Usnic Acid ◽  
Lowland Rain Forest ◽  
Tropical Lowland ◽  
Green Algal ◽  
Lowland Tropical Rain Forest

<p>The lichen flora of tropical areas is still much underworked Java in general and Alas Purwo in East Java for specially is no exception. Alas Purwo National Park is representative of a typical lowland tropical rain forest ecosystem in Java. . It is famous with peculiar and endemic species of plant include sawo kecik (Manilkara kauki) and manggong bamboo (Gigantochloa manggong). , beside among the other plants also ketapang (Terminalia cattapa), nyamplung (Calophyllum inophyllum), kepuh (Sterculia foetida), and keben (Barringtonia asiatica). Moreover, in lowland tropical rain forest ecosystem have reported the lichens species diversity is very high and may include over 200 species in 1 ha. There is no reported have found concerning the lichens richness in Alas Purwo. Recently preliminary study of Lichens diversity have been done at triangulation Zone Alas Purwo National Park , East Java. The lichens of the study area have not been treated comprehensively. We explored the lichenological characteristics of putative”tropical lowland cloud forest” (LCF) in a lowland area (0–20ma.s.l.) near Triangulation using macrolichens (cortocoulous species) as indicator taxa We analyzed lichen diversity on 20 trees in two 0,25 ha plots. In tropical lowland forests, corticolous green algal lichens are abundant and highly diverse. This may be related to adaptation to prevailing microenvironmental conditions including, for example, high precipitation and low light intensities. In the understory of a tropical lowland rain forest in Alas Purwo , we studied the morphology and anatomy of corticolous lichens and microcristal test. We found that from Tetrasigma sp , Serbella otodans, Hemandia feltata Baringtonia aciatika Pandanaceae Manilcara cauci Swetinia mahagoni trees there are 30 species of lichens, dominated by Dyorigma sp Graphis and Glyphis from familia of Graphidaceae and Dirinaria Physcia Pyxine Ramalina from familia of Parmeliaceae. The thallus calour was variety from Green-grey, Green-bllue, green, light green, grey, brown, dark green to orange. They have vegetative as wel as generative reproduction such as isidia, soralia, soredia, chypellae, histerothecia, perithecia,and apothecia. The lichenic acids contain such as gyrophoric acid, barbatic acid, usnic acid, atranorin, acid, divaricatic acid and lecanoric acid, </p><p><strong>Keywords</strong>: Alas Purwo, lichens and lichenic acid.</p>

New records of Ascomycetes from the Tropical Montane Cloud Forests of eastern Mexico

Phytotaxa ◽  
2020 ◽  
Vol 454 (3) ◽  
pp. 161-185
Author(s):  
TANIA RAYMUNDO ◽  
RICARDO VALENZUELA ◽  
JULIO CESAR RAMÍREZ-MARTÍNEZ ◽  
MICHELLE MARTÍNEZ-PINEDA ◽  
AURORA COBOS VILLAGRÁN ◽  
...  
Keyword(s):  
New Records ◽  
Vegetation Type ◽  
Cloud Forest ◽  
Tropical Montane Cloud Forest ◽  
Ecological Studies ◽  
Cloud Forests ◽  
Montane Cloud Forest ◽  
Tropical Montane Cloud Forests

The tropical montane cloud forest is an important reservoir of the diversity of Mexican ascomycetes. We cite and describe 17 species that had not been recorded in this vegetation type. Fifteen of them are new records for Mexico. Some of these species are associated with angiosperms and some with other fungi. Ongoing efforts are required to carry out floristic, taxonomic, phylogenetic and ecological studies of this group of fungi in such a diverse ecosystem that is cataloged as threatened.

Spatiotemporal variation in phyllostomid bat assemblages over a successional gradient in a tropical dry forest in southeastern Brazil

2014 ◽  
Vol 30 (2) ◽  
pp. 123-132 ◽  
Author(s):  
Luiz Alberto Dolabela Falcão ◽  
Mário Marcos do Espírito-Santo ◽  
Lemuel Olívio Leite ◽  
Raphael Neiva Souza Lima Garro ◽  
Luis Daniel Avila-Cabadilla ◽  
...  
Keyword(s):  
Tropical Dry Forest ◽  
Spatiotemporal Variation ◽  
Dry Forest ◽  
Southeastern Brazil ◽  
Successional Stage ◽  
Future Studies ◽  
Eastern Brazil ◽  
Successional Gradient ◽  
Successional Stages ◽  
Landscape Level

Abstract:The aim of this study was to investigate the spatiotemporal variation in richness, abundance, structure and composition of phyllostomid bats over a successional gradient in a tropical dry forest in south-eastern Brazil. Four successional stages (pasture, early, intermediate and late) were sampled in the northern part of the state of Minas Gerais. Bats were sampled using mist nets at three sites for each of the four successional stages (12 sites in total) during eight periods between 2007 and 2009. A total of 537 individuals were captured (29 recaptured), distributed among four families and 22 species. Bat abundance and richness varied in space, being higher in the late-successional stage, and over time, being significantly lower during the dry season. When compared between guilds, only the abundance of omnivores varied significantly during the sampled months. Our results demonstrate that areas of late-successional stages showed higher bat richness and abundance in comparison with areas undergoing secondary succession. Our results also suggest the use of early-successional areas as flying routes by bats can lead to failure to detect differences in bat composition within successional gradients. We suggest future studies should assimilate landscape-level analyses into their studies to better evaluate the effects of successional gradients on bat assemblages.

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