Rosamond Ione Coates

Rosamond Ione Coates
Universidad Nacional Autónoma de México | UNAM · Estacion de Biologia Tropical Los Tuxtlas, Instituto de Biologia

BSc.

About

87
Publications
24,321
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5,584
Citations
Citations since 2016
27 Research Items
1923 Citations
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
Additional affiliations
May 1982 - May 1983
Universidad Nacional Autónoma de México
Position
  • Technician

Publications

Publications (87)
Article
Insect life cycles are short-term and therefore sensitive to immediate changes triggered by climate, vegetation structure, or land use management; hence, the insect populations shape the communities and functional relationships in tropical forests. In this study, we hypothesized that seasonal variations of the dipteran families respond in different...
Article
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Background: Lianas are an important woody component of tropical rain forests. We described and compared the composition, structure, and diversity of the liana community in one of the northernmost neotropical rain forests. Question: How much does this liana community differ in attributes with global patterns documented in other tropical and subtrop...
Article
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Background and Research One noteworthy element found throughout the tropical anthropogenic mosaic is the live fence, which is established within agricultural matrices and its structure within the landscape retains ecological processes, but few are recognized as elements of biological and cultural conservation. Methods In this study, we have resear...
Article
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Background and Research Aims Forest loss and fragmentation have a negative impact on large-sized predators and prey, whose populations are reduced or extirpated locally. We explored the spatiotemporal coexistence of the mesopredators (< 15 kg) coyote, ocelot, and white-nosed coati, with their potential prey (< 15 kg) Mexican agouti, lowland paca, a...
Article
en Dung beetle activity causes many changes in the soil when they remove feces from the surface. In temperate grasslands and in greenhouse experiments, these changes have been found to positively affect established plants, but information about these effects under natural conditions in tropical forests is practically nonexistent. In a tropical rain...
Article
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Grasses are recognized as a critical regeneration barrier in tropical pastures, yet the effects of rodents and rodent–grass interactions are not well understood. As selective foragers, rodents could shape tree communities, moderating biodiversity in regenerating tropical landscapes. We utilized a fully crossed two-way factorial design to examine th...
Article
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Tropical ecosystems have been transformed at alarming rates provoking their transformation mainly into agricultural and pasturelands for cattle. This has drastically modified landscapes, the provision of ecosystem services, and thus human livelihoods. As a response to the need to preserve and study tropical forests, the National Autonomous Universi...
Article
Seed priming increases the vigor of seeds and seedlings through metabolic and biochemical processes occurring during controlled hydration, followed by dehydration. In the field, seeds are exposed to hydration-dehydration events in and on the soil after dispersal, as in seed priming. Nevertheless, seed priming has been sparsely tested on desiccation...
Article
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A team of 79 scientists from more than 50 institutions partnered to gather all available information regarding Mexican ants since 1894, the year in which the first geographical record of an ant is known for the country. In this new study, including more than 21,000 records, we showed that there are ~900 species of ants in Mexico, which are distribu...
Article
A team of 79 scientists from more than 50 institutions partnered to gather all available information regarding Mexican ants since 1894, the year in which the first geographical record of an ant is known for the country. In this new study, including more than 21,000 records, we showed that there are ~900 species of ants in Mexico, which are distribu...
Article
A team of 79 scientists from more than 50 institutions partnered to gather all available information regarding Mexican ants since 1894, the year in which the first geographical record of an ant is known for the country. In this new study, including more than 21,000 records, we showed that there are ~900 species of ants in Mexico, which are distribu...
Article
Full-text available
Dung beetles are secondary seed dispersers, incidentally moving many of the seeds defecated by mammals vertically (seed burial) and/or horizontally as they process and relocate dung. Although several studies have quantified this ecological function of dung beetles, very few have followed seed fate until seedling establishment, and most of these hav...
Article
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The main effects of habitat loss and fragmentation have been addressed through changes in diversity patterns at different spatial levels. Species richness and diversity are the most used descriptors to assess the effect of changes in land use on tropical communities. However, other biological responses such as richness and diversity of trophic guil...
Article
Dung beetles relocate vertebrate feces under the soil surface, and this behavior has many ecological consequences. In tropical forests, for example, seeds defecated by mammals that are subsequently buried by dung beetles are less likely to suffer predation. While the effects of dung beetles on the fate of defecated seeds have been relatively well s...
Article
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The chemical composition of the floral scent released by Pachira aquatica was analyzed in situ using standard dynamic headspace and Gas Chromatography- Mass Spectroscopy. A total of 34 compounds were found in the scent, 31 of which were identified and classified as terpenoids, benzenoids, fatty acid derivatives or nitrogen containing compounds. The...
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Resumen Se presenta una lista actualizada de los mamíferos nativos no voladores de Los Tuxtlas, región ambientalmente compleja y notable por su biodiversidad. Las selvas de Los Tuxtlas han perdido gran parte de su vegetación original y enfrentan presiones negativas que afectan a las especies y sus comunidades, modificando los patrones de diversidad...
Article
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To design conservation strategies, the extent of plant richness of tropical forests needs to be characterized in terms of their seed longevity. In this study, we examined the potential seed longevity, that is, storage ex situ, of species from south-eastern Mexico: Chamaedorea glaucifolia, Cymbopetalum baillonii, Magnolia mexicana, Nectandra coriace...
Poster
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An assessment of diversity and seasonal dynamics of the Dipteran families of the understory was conducted, in a fragment of Tropical Rainforest of Mexico (in spanish).
Article
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Bat species in Neotropical regions are known to reach a high diversity. The Chiropteran fauna contributes significantly to the ecological dynamics of tropical forests and are excellent indicators of the state of conservation. The Los Tuxtlas, Veracruz has suffered severe habitat degradation and forest fragmentation in the last four decades, mostly...
Article
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Los murciélagos representan un componente clave en la dinámica de ecosistemas terrestres y alcanzan altos niveles de abundancia y diversidad en el neotrópico. Las transformaciones medioambientales modulan la diversidad alfa, beta y gamma de una región, donde algunas especies se ven favorecidas y otras no, reduciendo o ampliando su presencia regiona...
Article
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Although there is a large diversity of plant species with extrafloral nectaries, histological detail of these glands is poorly documented in tropical rain forest species. We characterized extrafloral nectaries using digital photographs, scanning electron microscopy and histological methods for eight plant species belonging to the Costaceae, Euphorb...
Article
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Contemporary defaunation of fragmented forests potentially alters patterns of seed predation and dispersal. Alternatively, the remaining fauna may compensate for missing animals, resulting in equivalent rates of seed dispersal and predation. In the Los Tuxtlas region of southern Mexico, populations of large terrestrial fruit-eating mammals are dimi...
Article
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Recruitment success of individual plants is limited by an array of biotic and abiotic factors. Seedling survival may experience high mortality due to negative density dependence or altered microclimatic conditions. This study reports regeneration of Poulsenia armata (Moraceae), in the fragmented landscape of the Los Tuxtlas region in south-eastern...
Article
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A revision of the bibliography, as well as an analysis on the data from the specimen labels of Scena propylea (Druce) (Erebidae: Arctiinae: Euchromiina) deposited in different scientific collections, was carried out and included information from 1894 to 2010. Its geographical distribution is restricted to the Trans-Mexican Volcanic Belt which deter...
Article
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The rapid disruption of tropical forests probably imperils global biodiversity more than any other contemporary phenomenon. With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to hu...
Article
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Here we present the first known records for Mexico and the Neotropics of arthropods associated with the terrestrial bromeliad Greigia juareziana. The site locality for the collection of the host species is the southeast portion of the San Martín Tuxtla volcano in the state of Veracruz, Mexico. Four species of arthropods were detected within the lea...
Article
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Here we present the first known records for Mexico and the Neotropics of arthropods associated with the terrestrial bromeliad Greigia juareziana. The site locality for the collection of the host species is the southeast portion of the San Martín Tuxtla volcano in the state of Veracruz, Mexico. Four species of arthropods were detected within the lea...
Article
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Habitat, abundance and conservation perspectives of parrots at Los Tuxtlas Bio-sphere Reserve, Veracruz, Mexico. – During the years of 2008–2010, we assessed the conservation status of parrot species in Los Tuxtlas, Veracruz, southeast Mexico, obtaining data on abundance, habi-tat use and date of pet trade. During our field studies, we visited site...
Article
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During the years of 2008-2010, we assessed the conservation status of parrot species in Los Tuxtlas, Veracruz, southeast Mexico, obtaining data on abundance, habitat use and date of pet trade. During our field studies, we visited sites that included all the terrestrial habitats in the region, from the mangrove forest at sea level to montane rain fo...
Article
This article describes a web-based data entry and GIS-driven mapping system designed for an ethnographic and entomological survey of Chagas’ disease, an emerging zoonotic disease, and Triatoma dimidiata, a primary vector, in the Los Tuxtlas region of Veracruz, Mexico. To better understand this disease in the region, a collaborative, multi-disciplin...
Article
To improve the restoration of tropical rain forests, we tested the germination of seeds of Omphalea oleifera collected from soil (S) and from trees (T) in the 2001 dry season (Spring), at the beginning of a dry season (2005a, winter) and in the rainy season (2005b, winter). All seeds had high water content (WC, 31–33%), and the lipid content varied...
Article
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We investigated the presence of Neotropical migratory landbirds in a 90-km2 landscape in the region of Los Tuxtlas, Veracruz, Mexico. Using the fixed-radius count point procedure, migratory landbirds were surveyed in 21 forest fragments and in four replicates of shaded (coffee, cacao and mixed) and unshaded (citrus and allspice) plantations, live f...
Article
Predation rates of artificial nests were investigated in a fragmented landscape in the lowlands of Los Tuxtlas in southern Mexico. Hen and plasticine eggs were used to assess predation pressure in four habitats: the interior of forest fragments, the forest–pasture edge, corridors of residual forest vegetation and linear strips of live fences across...
Article
In order to document the responses of bats to destruction and fragmentation of their natural habitat and the value of different types of man-made vegetation for bat conservation in the Neotropics, bats were sampled with mist nets to compare species richness and species composition in a tract of continuous forest, forest fragments and a habitat-isla...
Article
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With the aim of determining what kind of landscape mosaics might sustainmaximum diversity and minimum species loss, dung beetles were sampled withbaited pitfall traps to compare species richness and species composition in atract of continuous forest, forest fragments and a habitat island consisting ofa mosaic of forest and arboreal crops in Los Tux...
Article
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The structure, composition and reproductive phenology of a bat assemblage were investigated in the tropical region of Los Tuxtlas, Mexico. A 90-km 2 landscape, originally occupied by rain forest, consisted of forest fragments and natural corridors of vegetation surrounded by pasturelands. Artificial strips of vegetation also were present as live fe...
Article
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Fragmentation of lowland tropical rain forests has resulted in loss of animal and plant species and isolation of remaining populations that puts them at risk. At Los Tuxtlas, Mexico, lowland rain forests are particularly diverse in the bat fauna they contain and while most of the forests have been fragmented by human activity, many of the fragments...
Article
Fragmentation of the lowland tropical rain forest has resulted in loss of animal and plant species and isolation of remaining populations that puts them at risk. At Los Tuxtlas, Mexico, lowland rain forests are particularly diverse in the avian fauna they contain and while most of the forests have been fragmented by human activity, many of the frag...
Article
In Neotropical rain forests, fresh mammal dung, especially that of howler monkeys, constitutes an important resource used by dung beetles as food and for oviposition and further feeding by their larvae. Tropical rain forest destruction, fragmentation, and subsequent isolation causing reductions in numbers of and the disappearance of howler monkeys...
Article
The feeding behavior and general activity patterns of a howler monkey troop living in a 3.6 ha forest fragment were studied at Los Tuxtlas, Mexico, for an annual cycle. Monthly samples of their feeding behavior indicated that they used 52 species of 24 plant families as sources of food. Of these, 67% were trees, which accounted for 96% of total fee...
Article
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At Los Tuxtlas, Mexico, presence of dung and carrion beetles, were sampled using baited pitfall traps, at the following habitats: isolated forest fragments, forest edges, plantations (coffee, cacao, mixed, citrus and allspice), live fences and pastures. A total of 14,269 beetles representing 36 species were captured. Onthophagus batesi, Canthon fem...
Article
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Faced with rapid and extensive conversion of tropical rain forests to a landscape consisting of pasture lands, and with the need to preserve the avian diversity of tropical regions, it is imperative to determine how different species have responded to anthropogenic alterations of their natural habitats. We sampled birds in undisturbed and disturbed...
Article
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In view of the extensive destruction, fragmentation, and conversion of primate habitats to anthropogenic vegetation, information on Neotropical primate ability to use a landscape consisting of forest fragments and agricultural habitats is necessary to understand the ecological flexibility of the species involved and it is of relevance to the design...
Article
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The rapid and extensive conversion of Neotropical rain forests to a landscape consisting of pasture lands and other agricultural habitats has meant the local disappearance fragmentation and isolation of vertebrate populations To avoid further losses in biodiversity in Neotropical rain forests, it is imperative to determine how the different species...
Article
Full-text available
Faced with the rapid and extensive conversion of tropical rain forests to pasture lands and agricultural fields and with the need to preserve the remaining mammalian fauna, it is imperative to determine how the different species that form the mammalian community have responded to the anthropogenic alterations of their natural habitats To provide da...
Article
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Destruction and fragmentation of tropical rain forest result in a loss of species and of generating capacity of the ecosystem via animal vectors such as seed dispersal agents. To gather quantitative data regarding this ecological problem, birds and mammals were censused in 30 forest fragments, 15 agricultural islands representing five types of vege...
Article
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Dung beetles attracted to howler monkey (Alouatta palliata) and coati (Nasua narica) dung were studied for an annual cycle in the tropical rain forest of Los Tuxtlas, Mexico. Pitfall traps set for 24 h month−1 captured 1567 dung beetles of 21 species. The species Canlhidium martinto, Deltochilum pseudoparile and Canthon femoralis accounted for 62%...
Article
Quantitative data on predispersal seed predation by avian non-dispersers are few for tropical plants (but see Howe 1990, Janzen 1983). Parrots (Psittacidae) are ubiquitous in Neotropical rain forests, but published data on seed predation by these seed-eating birds exist only for a few plant species such as Brosimznun utile (H.B.K.) Pittier (Higgins...
Article
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Howlers consumed the fruits of 35 species of plants; seeds of 28 of these were dispersed by the monkeys. The majority (≥90%) of the seeds dispersed by monkeys were destroyed by rodents. Rapid relocation and burial of dung by dung beetles resulted in accidental relocation and burial of large numbers of seeds shortly after deposition. Faecal clumps (...
Article
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Foraging and attendance of birds at army-ant swarm raids were studied in the tropical rain forest of Los Tuxtlas, Mexico. Sixty-eight raiding swarms were intercepted over a four-year period of which 57% were Eciton burchelli and 43% Labidus praedator. A total of 461 birds (37 species/12 families) were recorded at swarms of E. burchelli and 208 bird...