Amphibian communities in two contrasting ecosystems: functional diversity and environmental filters

Álvarez-Grzybowska, Eliza; Urbina‐Cardona, J. Nicolás; Córdova-Tapia, Fernando; García, Andrés

doi:10.1007/s10531-020-01984-w

Cited by 19 publications

(17 citation statements)

References 97 publications

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“…Spatio-temporal changes in the structure of the assemblages of anurans in the larval stage point to some species as possible indicators of the state of conservation of the ecosystem (Welsh & Ollivier, 1998). Given their functional traits, those species could be sensitive to local changes in environmental variables (Álvarez-Grzybowska et al, 2020) due to its low dispersion capacity and high permeability of the skin being affected by changes in the vegetation cover (McDiarmid & Altig, 1999;Wells, 2007).…”

Section: Final Thoughts On the Conservation Of Anurans In Transformed Savanna Landscapesmentioning

confidence: 99%

Tadpoles Inhabiting Natural and Anthropogenic Temporary Water Bodies: Which Are the Environmental Factors that Affect the Diversity of the Assemblages?

Rozo

Urbina‐Cardona

2021

Front. Environ. Sci.

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The study of tadpole assemblages allows inferring habitat availability and using their occupation as a means of proxy for the effective reproduction of the species, contributing to complementary information for the study of their adult forms. Environmental variables, represented by abiotic variables, vegetation structure, matrix management, and landscape elements, affect species having reproductive modes associated with oviposition and development in bodies of water. In the Orinoco region, most amphibians have complex life cycles and deposit their eggs in highly dynamic lentic bodies of water. Therefore, it is important to know how larval assemblages change over short periods of water accumulation and their relationship with environmental variables. Fieldwork was conducted during 9 weeks of larval sampling, from the beginning of the rainy season. We evaluate changes in anuran assemblages associated with water accumulation in five temporary water bodies of anthropogenic (road or pasture) and natural (savanna or gallery forest) origin. Twenty environmental variables were evaluated and measured in the center of each water body. Of these, nine landscape variables were measured only once during the study. The other eleven variables, representing management practices, physicochemical and structural characteristics of the water bodies, were measured weekly during the 3 months of sampling. We explored differences in the structure and diversity of larval-stage anuran assemblages using statistical tests suitable for small sample sizes (i.e., permutational multivariate analysis of variance PERMANOVA and the distance-based linear modeling DistLM). Of the 14 species found, two species had remarkedly high abundances from which Rhinella humboldti (19% of the total tadpole abundance) was a generalist inhabiting the natural and anthropogenic water bodies, while Leptodactylus insularum (18% of the total tadpole abundance) was a specialist at a natural pond in the savanna. The natural water bodies contained the highest number of species (between 10 and 12) and a total abundance of larvae (between 847 and 485 individuals). In contrast, the anthropogenic water body tracks generated by tractors were only occupied by two species with 50 individuals in total, while the water body generated by the trampling of cattle in pastures had three species with 474 individuals. These three species that inhabited the anthropogenic puddles were also found in the natural ponds and none of the eight species of hylids inhabited the puddles. In each field trip, all the tadpoles were collected from the sampled bodies of water. However, a week later, we found that each of the water bodies had been recolonized by four species (Leptodactylus fuscus, Leptodactylus fragilis, Elachistocleis ovalis, and R. humbolti). The variables with the highest explanatory power on the variation of anuran assemblage structure throughout all the water bodies were height of plants, number of cattle, distance to the nearest native forest edge, distance to an anthropic lentic body of water, distance to a natural lentic body of water, and pH. The bodies of water immersed in the natural cover were more diverse and had a greater degree of spatial and temporal species turnover. Our study calls for the importance of understanding the turnover of larval stage anurans over short periods, associated with water accumulation, in highly dynamic systems such as natural ponds and anthropogenic puddles. The importance of species traits and local processes is also highlighted, from environmental variables to human management activities, in the conservation of amphibian assemblages.

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Section: Final Thoughts On the Conservation Of Anurans In Transformed Savanna Landscapesmentioning

confidence: 99%

Tadpoles Inhabiting Natural and Anthropogenic Temporary Water Bodies: Which Are the Environmental Factors that Affect the Diversity of the Assemblages?

Rozo

Urbina‐Cardona

2021

Front. Environ. Sci.

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“…Los anfibios son un excelente modelo de estudio para medir los efectos de la transformación antropogénica de los paisajes sobre la DF, ésto a partir de sus respuestas morfológicas y fisiológicas ante los filtros ambientales naturales (Álvarez-Grzybowska et al, 2020) y antropogénicos (Nowakowski et al, 2017). En ese sentido, los rasgos funcionales, tales como piel altamente permeable, respiración pulmocutánea, bajas tasas metabólicas, baja movilidad, alta diversidad de modos reproductivos y requerimientos puntuales de microhábitat, ayudan a entender la respuesta de las especies ante el manejo de matrices antropogénicas (Dixo y Metzger, 2010;Ernst et al, 2006;Ribeiro et al, 2017) y su papel amphibian species were recorded, with the greatest richness occurring in the interior zone of the forest.…”

Section: Introductionunclassified

“…Respecto al agrupamiento funcional, Trimble y Van Aarde (2014) encontraron que los grupos funcionales de anfibios de talla pequeña y hábito fosorial se ven más afectados por cambios en el uso del suelo, disminuyendo su abundancia en coberturas como cultivos y plantaciones. Otros estudios han identificado las relaciones que tienen las facetas de la diversidad funcional de los anfibios con la precipitación y la temperatura en áreas montañosas (Ochoa-Ochoa et al, 2019), con los filtros ambientales que diferencian ecosistemas naturales (Álvarez-Grzybowska et al, 2020), con la estructura del paisaje como la disponibilidad de hábitats acuáticos (Ribeiro et al, 2017), con las alteraciones del hábitat en paisajes fragmentados (Riemann et al, 2017), con el éxito de la restauración ecológica (Díaz-García et al, 2017), con los estadios sucesionales generados por el abandono de selvas (Hernández-Ordóñez et al, 2019) y con la interacción entre la sucesión ecológica del bosque seco y los disturbios naturales causados por el régimen de huracanes (Suazo-Ortuño et al, 2018).…”

Section: Introductionunclassified

“…Sin embargo, hasta el momento solamente el estudio de Álvarez-Grzybowska et al (2020) ha comparado el cambio en la diversidad funcional de anfibios entre temporadas de lluvias y seca, por lo que se convierte en un marco de referencia para el presente estudio. Los autores encontraron que los valores en los índices de diversidad funcional no cambian entre temporadas, pero si hubo un recambio temporal en los grupos funcionales para el bosque de pino-encino.…”

Section: Introductionunclassified

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Respuestas de la diversidad taxonómica y funcional a la transformación del paisaje: relación de los ensamblajes de anfibios con cambios en el uso y cobertura del suelo

Zabala-Forero¹,

Urbina‐Cardona

2021

Rev.Mex.Biodiv.

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“…Limiting similarity may have a strong role in the local community structure by eliminating poor competitors (Huston 1999). The relative importance of environmental filtering and limiting similarity depends on multiple factors, such as environmental context (Echevarria & Rodriguez 2017, Álvarez-Grzybowska et al 2020 and spatial scale (Araújo & Rozenfeld 2014, Boet et al 2020. For example, environmental conditions may filter most of the functional traits of fish communities, while limiting similarity may be stronger on traits related to trophic partitioning if the competition for trophic resources is important (Ford & Roberts 2020).…”

Section: Introductionmentioning

confidence: 99%

Environmental conditions promote local segregation, but functional distinctiveness allow aggregation of catfishes in the Amazonian estuary

Soares¹,

Benone²,

Barthem³

et al. 2020

Preprint

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Cooccurrence patterns of species can appear through niche-related processes such as (i) environmental filtering matching specific sets of traits to a given environment, and (ii) limiting similarity selecting divergent functional traits to reduce niche overlap. Locally, both processes should act together to shape the distribution of species. We evaluated the importance of environmental variables and functional distinctiveness to the co-occurrence patterns of nine marine catfishes in the inner estuary of the Amazon River mouth. Sampling was carried out in the dry seasons of 1996 and 1997, and the rainy season of 1996 by nearly 120 standardized bottom trawls per expedition. We observed 13 significant pairs of segregated species and two pairs of aggregated species, which sum 41.7% of all combinations. Amphiarius phrygiatus and Sciades couma segregated from all the remaining marine catfishes by occupying shallower areas with lower salinity levels. Aggregated pairs were strongly associated with higher functional distinctiveness. We concluded that environmental filtering is the main force structuring the co-occurrence patterns by promoting spatial segregation, but functional distinctiveness allowed some species to aggregate.

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Amphibian communities in two contrasting ecosystems: functional diversity and environmental filters

Cited by 19 publications

References 97 publications

Tadpoles Inhabiting Natural and Anthropogenic Temporary Water Bodies: Which Are the Environmental Factors that Affect the Diversity of the Assemblages?

Tadpoles Inhabiting Natural and Anthropogenic Temporary Water Bodies: Which Are the Environmental Factors that Affect the Diversity of the Assemblages?

Respuestas de la diversidad taxonómica y funcional a la transformación del paisaje: relación de los ensamblajes de anfibios con cambios en el uso y cobertura del suelo

Environmental conditions promote local segregation, but functional distinctiveness allow aggregation of catfishes in the Amazonian estuary

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