Historical legacies and contemporary processes shape beta diversity in Neotropical montane streams

González‐Trujillo, Juan David; Saito, Victor S.; Petsch, Danielle Katharine; Muñoz, Isabel; Sabater, Sergi

doi:10.1111/jbi.13986

Cited by 13 publications

(9 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We found few studies from Asia, Africa, and South America, whose river ecosystems show specific differences (e.g. Dudgeon, 2008; Petsch et al ., 2020; González‐Trujillo et al ., 2021) compared with the temperate ecosystems that comprise most effect sizes in our study. Secondly, only a small number of studies provided initial conditions to be compared with data after disturbances (Peters et al ., 2011).…”

Section: Discussionmentioning

confidence: 95%

Extreme weather events threaten biodiversity and functions of river ecosystems: evidence from a meta‐analysis

et al. 2022

Self Cite

View full text Add to dashboard Cite

Both gradual and extreme weather changes trigger complex ecological responses in river ecosystems. It is still unclear to what extent trend or event effects alter biodiversity and functioning in river ecosystems, adding considerable uncertainty to predictions of their future dynamics. Using a comprehensive database of 71 published studies, we show that eventbut not trendeffects associated with extreme changes in water flow and temperature substantially reduce species richness. Furthermore, event effectsparticularly those affecting hydrological dynamicson biodiversity and primary productivity were twice as high as impacts due to gradual changes. The synthesis of the available evidence reveals that event effects induce regime shifts in river ecosystems, particularly affecting organisms such as invertebrates. Among extreme weather events, dryness associated with flow interruption caused the largest effects on biota and ecosystem functions in rivers. Effects on ecosystem functions (primary production, organic matter decomposition and respiration) were asymmetric, with only primary production exhibiting a negative response to extreme weather events. Our meta-analysis highlights the disproportionate impact of event effects on river biodiversity and ecosystem functions, with implications for the long-term conservation and management of river ecosystems. However, few studies were available from tropical areas, and our conclusions therefore remain largely limited to temperate river systems. Further efforts need to be directed to assemble evidence of extreme events on river biodiversity and functioning.

show abstract

Section: Discussionmentioning

confidence: 95%

Extreme weather events threaten biodiversity and functions of river ecosystems: evidence from a meta‐analysis

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…This spill-over part of the hypothesis is needed because we did not detect any significant three-way interactions of year, tenure, and region, which implies that both the remnants and reserves in the north followed similar trajectories. We emphasise this is a hypothesis for testing and acknowledge that our design does not allow us to exclude unknown and unobserved confounding factors between the north and south such as historical disturbance legacies (Gonzalez-Trujillo et al 2021).…”

Section: Proximity To Recently Burnt or Long Unburnt Conservation Parkmentioning

confidence: 99%

Traits influence reptile responses to fire in a fragmented agricultural landscape

2022

View full text Add to dashboard Cite

Context Habitat loss and fragmentation can interact with other threats, including altered fire regimes, and responses to these effects can be mediated by functional traits. Objectives To determine how richness and abundance of reptile trait groups respond to habitat fragmentation, patch isolation and fire. Methods We surveyed reptiles in 30 sites over 3 years. Sites in remnant patches in farmland were adjacent to a conservation park with either recently burnt or long-unburnt habitat. The remnant patches were stratified by distance from the reserve. Sites were spatially paired, and we experimentally burnt one of each pair in farmland. Trait groups included size, reproduction, habitat position, diet, and activity period. Results None of the trait groups benefited from experimental burns, while the burns reduced abundance of viviparous, small, and above-ground species. Species richness was lower in isolated sites than in sites close to the conservation park, while generalist trait groups appeared unaffected by patch isolation. Large-sized reptiles had higher abundance in remnants. There was not more rapid colonisation of burnt sites near recently burnt conservation park. Instead, low initial abundance may have been caused by fire in combination with drought, with high rainfall during the study allowing recovery and spill-over into adjacent remnants. Conclusions Landscape structure appears to interact with natural fires, restoration burns and longer-term climatic trends to influence the abundance and distribution of reptiles. Traits mediate responses, enabling us to formulate a set of testable mechanistic hypotheses, which illustrates a pathway to generalisation and prediction.

show abstract

“…past climate changes) and contemporary (e.g. environmental filtering) processes in shaping present‐day patterns of biodiversity (González‐Trujillo et al, 2021; Weinstein et al, 2014), and that within an evolutionary context.…”

Section: Introductionmentioning

confidence: 99%

Global patterns and drivers of beta diversity facets of reef fish faunas

Maxwell

Leprieur

Quimbayo

et al. 2022

Journal of Biogeography

View full text Add to dashboard Cite

Aim Exploring the relationships between the different facets of beta diversity and both past and current environmental conditions can unveil the processes that have shaped spatial patterns of biodiversity. In the marine realm, large‐scale patterns and processes of beta diversity have been less investigated. Our study aimed to investigate the patterns and drivers of multiple facets of beta diversity and its components, contrasting pairs of reef fish assemblages among marine realms. Location Tropical reefs. Taxon Reef fishes. Methods Based on trait data and phylogenetic relationships for 5182 tropical reef fish species, we calculated compositional differences between pairs of reef fish assemblages across the Atlantic, the Tropical Eastern Pacific (TEP) and the Indo‐Pacific realms. We also applied a partitioning approach to distinguish between the turnover and nestedness components. We then evaluated the relative importance of several variables related to historical and contemporary environmental conditions in shaping spatial patterns of beta diversity using Constrained Analysis of Principal coordinates (CAP) models. Results Both the turnover and the nestedness components contributed to total phylogenetic and taxonomic beta diversity in the TEP and Indo‐Pacific realms, while the turnover component was found to be more important in the Atlantic realm. In contrast, total trait beta diversity displayed very low values and was primarily explained by the nestedness component. Taxonomic and phylogenetic differences in the composition of tropical reef fish assemblages were influenced by both historical and contemporary factors or solely by historical variables. Main conclusions Our results suggest that past climate changes and historical contingency left an imprint in the present‐day composition of tropical reef fish assemblages. The very low levels of trait beta diversity indicate that reef fish assemblages display similar trait composition even among geographically distant assemblages with contrasting evolutionary histories, which may result from environmental filtering or evolutionary convergence, or the combination of both processes.

show abstract

Historical legacies and contemporary processes shape beta diversity in Neotropical montane streams

Cited by 13 publications

References 76 publications

Extreme weather events threaten biodiversity and functions of river ecosystems: evidence from a meta‐analysis

Extreme weather events threaten biodiversity and functions of river ecosystems: evidence from a meta‐analysis

Traits influence reptile responses to fire in a fragmented agricultural landscape

Global patterns and drivers of beta diversity facets of reef fish faunas

Contact Info

Product

Resources

About