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Rincón‐Aranguri M, Toro‐Cardona FA, Galeano SP, Roa‐Fuentes L, Urbina‐Cardona N. Functional diversity of snakes is explained by the landscape composition at multiple areas of influence. Ecol Evol 2023; 13:e10352. [PMID: 37502301 PMCID: PMC10369374 DOI: 10.1002/ece3.10352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/29/2023] [Accepted: 07/06/2023] [Indexed: 07/29/2023] Open
Abstract
Roadkill and landscape composition affect snakes at different spatial scales, depending on the functional trait value of the species, which is reflected in the functional diversity indices at the assemblage level. This study evaluated the effect of roads and landscape composition on snakes' functional diversity at different areas of influence (250, 500, 1000, and 2000 m buffer areas). We compared roadkill snake species with those assemblages inhabiting the adjacent vegetation in the Orinoco region, Colombia. We surveyed snakes using transects on the road and adjacent areas on 13 landscapes along the road. We evaluated the effect of 16 landscape metrics at six land cover classes on the snake's functional diversity at four different areas of influence (from 250 to 2000 m around the sampled sites). The functional redundancy index was higher for roadkill species, suggesting that roads eliminate species that play similar roles in the assemblage and ecosystem processes. Likewise, the low values of functional redundancy in the adjacent vegetation call attention to the fact that each species surviving in this transformed landscape has a crucial active role in ecosystem processes in snake assemblages. For roadkill snakes, forest metrics explained changes in functional richness and functional evenness at a 250 m area of influence. In comparison, transient crop and pasture metrics explained changes in functional evenness and divergence at 2000 m. For snakes inhabiting the adjacent vegetation, the cohesion of pasture explained changes in functional richness at 250 m, and forest metrics explained changes in functional redundancy and evenness at 2000 m. Anthropogenic landscape transformation may have a greater effect on snake functional diversity at local scales than roadkill. In savanna ecosystems, the presence of native forest at 2000 m radius around roads promotes the conservation of snake assemblages. However, within a 250 m radius, the risk of snake roadkill increases when the road borders native forest. Therefore, it is necessary to implement wildlife crossing in these sections of the road.
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Affiliation(s)
- Mónica Rincón‐Aranguri
- Departamento de Ecología y Territorio, Facultad de Estudios Ambientales y RuralesPontificia Universidad JaverianaBogotáColombia
- Grupo Herpetológico de Antioquia, Instituto de BiologíaUniversidad de AntioquiaMedellínColombia
| | - Felipe A. Toro‐Cardona
- Grupo de Ecología y Evolución de Vertebrados, Instituto de BiologíaUniversidad de AntioquiaMedellínColombia
| | - Sandra P. Galeano
- Centro de Colecciones y Gestión de EspeciesInstituto de Investigación de Recursos Biológicos Alexander von HumboldtVilla de LeyvaColombia
| | - Lilia Roa‐Fuentes
- Departamento de Ecología y Territorio, Facultad de Estudios Ambientales y RuralesPontificia Universidad JaverianaBogotáColombia
| | - Nicolás Urbina‐Cardona
- Departamento de Ecología y Territorio, Facultad de Estudios Ambientales y RuralesPontificia Universidad JaverianaBogotáColombia
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de Bello F, Lavorel S, Hallett LM, Valencia E, Garnier E, Roscher C, Conti L, Galland T, Goberna M, Májeková M, Montesinos-Navarro A, Pausas JG, Verdú M, E-Vojtkó A, Götzenberger L, Lepš J. Functional trait effects on ecosystem stability: assembling the jigsaw puzzle. Trends Ecol Evol 2021; 36:822-36. [PMID: 34088543 DOI: 10.1016/j.tree.2021.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 11/21/2022]
Abstract
Under global change, how biological diversity and ecosystem services are maintained in time is a fundamental question. Ecologists have long argued about multiple mechanisms by which local biodiversity might control the temporal stability of ecosystem properties. Accumulating theories and empirical evidence suggest that, together with different population and community parameters, these mechanisms largely operate through differences in functional traits among organisms. We review potential trait-stability mechanisms together with underlying tests and associated metrics. We identify various trait-based components, each accounting for different stability mechanisms, that contribute to buffering, or propagating, the effect of environmental fluctuations on ecosystem functioning. This comprehensive picture, obtained by combining different puzzle pieces of trait-stability effects, will guide future empirical and modeling investigations.
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González-M R, Posada JM, Carmona CP, Garzón F, Salinas V, Idárraga-Piedrahita Á, Pizano C, Avella A, López-Camacho R, Norden N, Nieto J, Medina SP, Rodríguez-M GM, Franke-Ante R, Torres AM, Jurado R, Cuadros H, Castaño-Naranjo A, García H, Salgado-Negret B. Diverging functional strategies but high sensitivity to an extreme drought in tropical dry forests. Ecol Lett 2020; 24:451-463. [PMID: 33316132 PMCID: PMC9292319 DOI: 10.1111/ele.13659] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/09/2020] [Accepted: 11/15/2020] [Indexed: 01/13/2023]
Abstract
Extreme drought events have negative effects on forest diversity and functioning. At the species level, however, these effects are still unclear, as species vary in their response to drought through specific functional trait combinations. We used long-term demographic records of 21,821 trees and extensive databases of traits to understand the responses of 338 tropical dry forests tree species to ENSO2015 , the driest event in decades in Northern South America. Functional differences between species were related to the hydraulic safety-efficiency trade-off, but unexpectedly, dominant species were characterised by high investment in leaf and wood tissues regardless of their leaf phenological habit. Despite broad functional trait combinations, tree mortality was more widespread in the functional space than tree growth, where less adapted species showed more negative net biomass balances. Our results suggest that if dry conditions increase in this ecosystem, ecological functionality and biomass gain would be reduced.
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Affiliation(s)
- Roy González-M
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia.,Department of Biology, Faculty of Natural Sciences, Universidad del Rosario, Cr. 24 # 63C-69, Bogotá, Colombia
| | - Juan M Posada
- Department of Biology, Faculty of Natural Sciences, Universidad del Rosario, Cr. 24 # 63C-69, Bogotá, Colombia
| | - Carlos P Carmona
- Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, Tartu, 51005, Estonia
| | - Fabián Garzón
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia
| | - Viviana Salinas
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia
| | - Álvaro Idárraga-Piedrahita
- Fundación Jardín Botánico de Medellín, Herbario "Joaquín Antonio Uribe" (JAUM), Cll. 73 # 51D-14, Medellín, Colombia
| | - Camila Pizano
- Departamento de Biología, Facultad de Ciencias Naturales, Universidad Icesi, Cll. 18 # 122-135 Pance, Cali, Colombia
| | - Andrés Avella
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia.,Facultad del Medio Ambiente y Recursos Naturales, Universidad Distrital Francisco José de Caldas, Cr. 5 Este # 15-82, Bogotá, Colombia
| | - René López-Camacho
- Facultad del Medio Ambiente y Recursos Naturales, Universidad Distrital Francisco José de Caldas, Cr. 5 Este # 15-82, Bogotá, Colombia
| | - Natalia Norden
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia
| | - Jhon Nieto
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia
| | - Sandra P Medina
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia
| | - Gina M Rodríguez-M
- Fundación Ecosistemas Secos de Colombia, Cll. 5A, Bogotá, # 70C-31, Colombia
| | - Rebeca Franke-Ante
- Dirección Territorial Caribe, Parques Nacionales Naturales de Colombia, Cll. 17 # 4-06, Santa Marta, Colombia
| | - Alba M Torres
- Departamento de Biología, Facultad de Ciencias, Universidad de Valle, Cll. 13 # 100-00, Cali, Colombia
| | - Rubén Jurado
- Asociación GAICA, Cll. 11A # 32-21, Pasto, Colombia
| | - Hermes Cuadros
- Programa de Biología, Universidad del Atlántico, Km. 7 vía Puerto, Barranquilla, Colombia
| | | | - Hernando García
- Programa Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Cr. 1 # 16-20, Bogotá, Colombia
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