Revista de Biología Tropical
Revista de Biología Tropical / International Journal of Tropical Biology and Conservation, is a full open access journal from the University of Costa Rica focused on tropical biology and conservation. All issues, from 1953 to the present, are available for free download here.
OUR SCOPE (Objective)
Our journal publishes scientific articles that increase our understanding of biology, conservation, and biomedical life sciences in the tropics.
Selection criteria are the quantity and quality of new information and its potential interest to the general audience as well as to specialists. The studied ecosystems, or at least the organisms, must be tropical.
We give preference to feature articles that include testable study questions —for example, studies with an experimental design to evaluate factors that influence biological variables, or studies that explain the mechanisms underlying biological or biomedical phenomena such as, for example, behavior or physiology. Field studies should be extensive enough to identify temporal or spatial patterns. We also welcome systematic or phylogenetic studies above the species level, meta-analyses, and bibliometric studies that critically examine what is known and what remains to be done in any field of tropical biology.
Review articles are mostly published by invitation of the Editorial Board to recognized authorities. Other specialists interested in submitting a review must first send a titled outline to email@example.com. Accepted proposals receive the same evaluation as regular manuscripts.
All reviews and meta-analyses need to identify and fill gaps in knowledge, present methodological advances, and propose future research directions.
Note about old data: We encourage authors to compare old results with more recent data or to use the data within a meta-analysis. Studies based on data collected over six years ago must include a justification of why they are still of interest, and in the case of field studies, they need to present spatial patterns or temporal trends of historical significance. The Editorial Board evaluates the validity of methods and the relevance of results before sending the manuscript to reviewers.
The journal now has one issue per year (continuous publication from January 1st to December 31st) and publishes articles the same week that an edited version becomes available. Until 2021, it published four regular issues per year: issue 1 (January – March), issue 2 (April – June), issue 3 (July – September), and issue 4 (October – December).
We do not publish notes; short communications; species lists; single new species; range extensions; new records and other preliminary or short studies; or highly specialized technical reports based on protocols (e.g. agricultural, forestry, biochemical, microbiological, aquaculture, fishery or similar studies that only apply well known techniques to particular cases of local interest).
Special issues financed by research organizations are accepted after approval by the Editorial Board. They may contain a diversity of report types, including short papers, new records, new species descriptions, checklists, technical reports, etc. To publish a special issue, contact firstname.lastname@example.org for a cost estimate.
Researchers with an interest in studying all fields of tropical biology.
WHY PUBLISH IN REVISTA DE BIOLOGÍA TROPICAL?
- Fully indexed: Revista de Biología Tropical is included in Science Citation Index Expanded, REDIB Journals Ranking, Current Contents, Google Scholar, Biological Abstracts, and about 50 other international indices.
- Rapid decision and publication (7 days for first decision, 4-8 months from submission to publication).
- Fair: We use a double-blind system for a fair evaluation of manuscripts.
- High impact, not only because of its citation rate but also because it is widely read in countries with the highest tropical biodiversity, ensuring your article will have the most impact on the conservation of tropical biodiversity. Web of Science Impact Factor of 0.6. SJR Impact Factor of 0.28 (Q2).
- A personalized treatment by our dedicated staff.
- World Class Editorial and Scientific Boards.
- Open Access: All articles, since the first issue in 1953 to the present are freely available online (Archives) so they are more likely to be cited than articles behind pay-walls.
- FREE PUBLICATION: Each article receives 10 free pages of space in PDF format, which is enough for most scientific papers. Additional pages can be published in page layout format of the pdf at a cost of $50 each. Complementary material such as additional texts, figures, tables, graphics, and databases at a cost of $60. Contact email@example.com for more information.
- Elaeis guineensis (Arecaceae) residue as a fuel sorbent for passive application in fire-fighting engineeringpor Hazel Aragón el febrero 14, 2024 a las 6:00 am
Introduction: Spills of flammable liquids can lead to serious accidents, mainly in industrial plants and on roads. To prevent the spread of spills, various forms of collection are used, such as absorption with porous solids. Agroindustrial waste can be used as sorbent materials for flammable liquids. Objective: To determine the sorption capacity of the residual empty-fruit bunch of oil-palm (Elaeis guineensis) and the macaw palm (Acrocomia sp.) nutshell for four organic flammable liquids. Methods: The residual biomasses of E. guineensis and Acrocomia sp. were assessed as sorbents for spilled fuels (diesel, jet fuel, commercial kerosene, and gasoline). Volumetric measurement of liquid-fuel absorption at 24 ºC was taken during a week. Desorption was measured at 50 ºC as the drying kinetics, by using moisture scales. Results: The sorption capacity of the Acrocomia sp. material was not satisfactory, compared to the E. guineensis residual material, due to differences in the residual architecture of the organic material. This last can absorb 2.4 ± 0.2 cm3 g-1 at 24 ºC, during a one-week period. Diatomite absorbs greater quantities of the organic liquids but, the fluids diffusion at 50 ºC is 0.26 ± 0.09 times more slowly in the mineral matrix, because of the greater pore tortuosity in this mineral matrix. Conclusions: The oil-palm empty fruit bunch of E. guineensis, showed lesser but adequate performance than the sorbing behavior for fire hazard mitigation of diatomite. The nutshell of macaw palm (Acrocomia sp.) did not prove to be useful for this recovery operation.
- Precipitation explains Wood Thrush (Hylocichla mustelina) occupancy patterns in Northern Costa Ricapor Natalie Viviana Sánchez el febrero 13, 2024 a las 6:00 am
Introduction: The Wood Thrush is a migratory bird that experiencing dramatic declines of its populations in recent decades. This species over-winter in forest fragments with intermediate levels of habitat modification in Central America. However, more studies detailing the use of remnant forests through time are needed to elucidate the threats in the wintering grounds. Objective: The goal of this study was to understand the effects of climate on the distribution of Wood Thrush in Northern Costa Rica. Methods: The study was carried out in the Área de Conservación Guanacaste (ACG), located in Northern Costa Rica, in December 2016, and in the 2018-2019 migration season. Wood Thrush occupancy and detection probability for four locations of ACG were estimated using single season occupancy models. On the other hand, we estimated Wood Thrush occupancy in different months in each vegetation type in the wet forest using a multi-season occupancy models approach. Results: Wood Thrush occupancy was best described by precipitation in the four locations at the ACG, as precipitation increases, the probability of occupancy increases. The occupancy of Wood Thrushes in the wet forest was higher in the open area (with dense understory), followed by the old-growth forest, and then the secondary forest. Conclusion: Wood Thrush occupancy was better predicted by variation in precipitation. The probability of persistence can be also explained by precipitation, however, there was an unexpected increase in persistence in the last period (January-February) that was not related to precipitation. This may be due to the start of the breeding season for many resident birds, causing Wood Thrushes to remain in the same areas to avoid territorial conflicts with other bird species. Our data suggest that Wood Thrushes may be less mobile during this time, conserving energy before the spring migration. The preservation of wet forests in Northern Costa Rica is of paramount importance for the conservation of Wood Thrushes in their wintering grounds.
- Diversity of Leptohyphidae (Ephemeroptera) nymphs in the Quenane-Quenanito river, Colombian plain foothillspor Sara Velásquez-López el febrero 6, 2024 a las 6:00 am
Introduction: Various anthropic pressures affect the aquatic ecosystems of the foothills of Colombia. The response to environmental stressors is still unknown in bioindicator organisms such as Leptohyphidae. Objective: To determine the diversity of Leptohyphidae nymphs of the Quenane-Quenanito river, in two contrasting hydrological periods and its relationship with some physicochemical variables. Methods: In December (2014) and February (2015), organisms were collected with a Surber net at six stations along the current. Alpha and beta diversity was analyzed and redundancy analysis and generalized linear model were applied to establish the relationship between taxa and environmental variables. Results: Were identified 369 organisms belonging to four genera (Amanahyphes, Traverhyphes, Tricorythopsis, and Tricorythodes), two species, and eight morphospecies. Amanahyphes saguassu is reported for the first time for the Meta department. High diversity of Leptohyphidae nymphs was recorded in the transition to drought season and greater abundance in drought. Beta diversity indicated that the configuration of the assemblage changes spatially and temporally. Conclusions: Leptohyphidae organisms prefer fast habitats, particularly in the dry period where they find food (leaf litter, detritus) and shelter to establish themselves successfully; anthropic activities such as urbanization notably affect diversity. The high diversity recorded in this small stream in the foothills of the plains reflects the need to increase this type of works and collection efforts of study material in the region.
- Environmental sympatry through time: spatio-temporal distribution and conservation status of two sympatric anuran species (Leptodactylidae) in South Americapor Rebeca Acosta el enero 29, 2024 a las 6:00 am
Introduction: Leptodactylus latinasus and Physalaemus cuqui are sympatric anuran species with similar environmental requirements and contrasting reproductive modes. Climatic configuration determines distribution patterns and promotes sympatry of environmental niches, but specificity/selectivity determines the success of reproductive modes. Species distribution models (SDM) are a valuable tool to predict spatio-temporal distributions based on the extrapolation of environmental predictors. Objectives: To determine the spatio-temporal distribution of environmental niches and assess whether the protected areas of the World Database of Protected Areas (WDPA) allow the conservation of these species in the current scenario and future. Methods: We applied different algorithms to predict the distribution and spatio-temporal overlap of environmental niches of L. latinasus and P. cuqui within South America in the last glacial maximum (LGM), middle-Holocene, current and future scenarios. We assess the conservation status of both species with the WDPA conservation units. Results: All applied algorithms showed high performance for both species (X̅TSS = 0.87, X̅AUC = 0.95). The L. latinasus predictions showed wide environmental niches from LGM to the current scenario (49 % stable niches, 37 % gained niches, and 13 % lost niches), suggesting historical fidelity to stable climatic-environmental regions. In the current-future transition, L. latinasus would increase the number of stable (70 %) and lost (20 %) niches, suggesting fidelity to lowland regions and a possible trend toward microendemism. P. cuqui loses environmental niches from the LGM to the current scenario (25 %) and in the current-future transition (63 %), increasing the environmental sympathy between both species; 31 % spatial overlap in the current scenario and 70 % in the future. Conclusion: Extreme drought events and rainfall variations, derived from climate change, suggest the loss of environmental niches for these species that are not currently threatened but are not adequately protected by conservation units. The loss of environmental niches increases spatial sympatry which represents a new challenge for anurans and the conservation of their populations.
- Species distribution models and conservation status of threatened bats in the Tumbesian region of Ecuador and Perúpor Carlos Avila el enero 29, 2024 a las 6:00 am
Introduction: Biodiversity is being lost at an accelerating rate as a result of global change. In regions where human disturbance is widespread and ecological research limited, tools such as species distribution models (SDMs) have been widely used to improve knowledge about species’ conservation status and help develop management strategies. SDMs are especially important for species with restricted distributions, such as endemic species. Objectives: Our objectives were to (i) determine the extent to which the potential distribution predicted by SDMs for eight threatened bat species differed from the distribution maps reported by the IUCN; (ii) infer the area of distribution and state of endemism of each species; and (iii) evaluate the importance of the Tumbesian region for the conservation of these species. Methods: Based on global range presence records for the species, we used SDMs to assess the conservation status of these eight threatened bat species in the Tumbesian region of Ecuador and Peru. Results: Our results showed that the areas estimated by SDMs were 35–78 % smaller for four species (Eptesicus innoxius, Lophostoma occidentale, Platalina genovensium and Lonchophylla hesperia), and 26–1600 % larger for three species (Amorphochilus schnablii, Promops davisoni and Rhogeessa velilla) than those reported by IUCN. In the case of Tomopeas ravus, the area estimated by the SDM and IUCN was similar but differed in spatial distribution. SDMs coincided with the areas of endemism reported by previous authors for E. innoxius, R. velilla and T. ravus, but were different for A. schnablii, P. genovensium, P. davisoni and L. hesperia, due in part to projected distributions for most of these species in dry inter-Andean valleys according to the SDMs. Conclusions: The Tumbesian region represents a significant portion (40–96 %) of the predicted distributions of seven of the species studied, underscoring the importance of this region for bat conservation. Our results show likely distributions for these species and provide an important basis for identifying research gaps and proposing conservation measures for threatened bats of this little studied region.