Impacts of changing rainfall regime on the demography of tropical birds

Brawn, Jeffrey D.; Benson, Thomas J.; Stager, Maria; Sly, Nicholas; Tarwater, Corey E.

doi:10.1038/nclimate3183

Cited by 84 publications

(78 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Species might originate by dispersal across barriers but community structure and range expansion might be controlled by landscape ecological features promoting high species turnover. Evidence is increasing that long-term changes in precipitation can cause changes in forest bird populations (Blake & Loiselle, 2015;Brawn, Benson, Stager, Sly, & Tarwater, 2017). Such high complexity would promote high turnover, explaining why northern Colombia is the most bird diverse region in the world despite its low alpha diversity (Jenkins, Pimm, & Joppa, 2013).…”

Section: Discussionmentioning

confidence: 99%

The biotic interactions hypothesis partially explains bird species turnover along a lowland Neotropical precipitation gradient

Gómez

Ponciano

Londoño

et al. 2019

Global Ecol Biogeogr

View full text Add to dashboard Cite

Aim:We evaluated the influence of climate on the structure of bird communities along precipitation gradients. We hypothesize that mechanisms responsible for community turnover along precipitation gradients are similar to mechanisms operating along temperature and latitudinal gradients. We tested the hypothesis that environmental conditions affect community composition in dry forests, whereas biotic interactions affect community composition in wet forests.Location: Low-elevation forests along a precipitation gradient in Colombia where precipitation ranges from 700-4,000 mm annually but elevation and temperature remain constant. Time period: Present day.Major taxa studied: Neotropical forest birds. Methods:We sampled at 291 points in nine study areas (localities) across the c. 3,000-mm precipitation range. In each locality, we obtained climatic characteristics and phylogenetic, morphological and physiological proxy data to test predictions about the evolutionary relationships and distribution of traits.Results: Bird communities changed abruptly along the precipitation gradient and differed between dry and wet forests. Analyses of phylogenetic relationships, trait space, and observations at nests suggested that environmental filtering is more important in dry than in wet forests, especially for breeding. In contrast, we found little evidence that competition was more important in wet than in dry forests. Nest predation or competition for nest space, however, may be more critical in wetter forests. Conclusions:The two distinct bird communities we documented suggest that lowland precipitation gradients, across which temperature is constant, can be as important as temperature gradients in generating high beta diversity. We conclude that breeding in bird communities might be crucial for determining community assembly along environmental gradients. Given that recent population declines in tropical birds have been attributed to changes in precipitation, by understanding the mechanisms underlying community assembly along precipitation gradients our study may improve

show abstract

Section: Discussionmentioning

confidence: 99%

The biotic interactions hypothesis partially explains bird species turnover along a lowland Neotropical precipitation gradient

Gómez

Ponciano

Londoño

et al. 2019

Global Ecol Biogeogr

View full text Add to dashboard Cite

show abstract

“…Therefore, if the fledgling-to-1-yr survival estimate for Black-crowned Antshrikes is broadly representative of Panamanian understory birds, it gives us no reason to suspect that juvenile survival is higher in Manaus than in Panama. We are reassured that our estimates offer a reasonable representation of the Manaus (Karr et al 1990); (F) birds of any age, transient or not (Karr et al 1990), and adult birds (Brawn et al 2017) in Panama; (G) adult birds in the Nouragues field station, French Guiana (Jullien and Clobert 2000); (H) nontransient birds in the Tiputini Biodiversity Station, Ecuador (Blake and Loiselle 2013); (I) nontransient birds (Wolfe et al 2014) and adult birds in a random-effects model (present study) at the Biological Dynamics of Forest Fragments Project, near Manaus, Brazil; and (J) nontransient birds in the Cocha Cashu research station, Manu National Park, Peru (Francis et al 1999). Text inside each panel shows latitude in degrees, site name, average survival probability for the site without the effect of latitude (ls), and number of estimates (n) used in the meta-analysis.…”

Section: Discussionmentioning

confidence: 99%

“…The BCRs were selected on the basis of latitudinal coverage along the north-south line and the presence of forest habitat, which makes them relatively comparable with our study site. Next, we obtained data from mature forest in the Limón Province of Costa Rica (Wolfe et al 2015) and from Parque Nacional Soberanía, in Panama, an area of old-growth forest at~098N (Karr et al 1990, Brawn et al 2017. In South America, apart from our site at~028S (Wolfe et al 2014, present study), we obtained tropicalforest bird survival estimates from 1 site in French Guiana (Jullien and Clobert 2000), 2 sites in Ecuador Loiselle 2008, Ryder andSillett 2016), and 1 site in Peru (Francis et al 1999).…”

Section: Analysis Of Survival In Relation To Latitudementioning

confidence: 99%

Age effects on survival of Amazon forest birds and the latitudinal gradient in bird survival

Munoz

Kéry

Martins

et al. 2018

The Auk

View full text Add to dashboard Cite

“…This means continuing the movement away from assuming that climate change will act as a linear process that can solely be described by changes in temperature means (Ebi et al 2016), and undertaking more studies that assess the effects of not only asynchronous regimes, but also changes in the occurrence of extreme weather events (Senner et al 2015), temperature extremes rather than temperature means (Long et al 2016), and precipitation regimes (Brawn et al 2016). It also means working towards a mechanistic framework that explains why species respond to climate change the way they do and further developing our understanding of eco-evolutionary dynamics within the context of life-history trade-offs (Ellner 2013).…”

Section: Discussionmentioning

confidence: 99%

Spatial and temporal heterogeneity in climate change limits species' dispersal capabilities and adaptive potential

2017

Self Cite

View full text Add to dashboard Cite

Global climate change has already caused local declines and extinctions. These losses are generally thought to occur because climate change is progressing too rapidly for populations to keep pace. Based on this hypothesis, numerous predictive frameworks have been developed to project future range shifts and changes in population dynamics resulting from global climate change. However, recent empirical work has demonstrated that seasonally asynchronous climate change regimes -when a region is warming during some parts of the year, but cooling in others -are constraining species' responses to climate change more strongly than rapid warming, leading to intra-specific variation in responses to climate change and local population declines. Here, we couple a review of the literature related to asynchronous climate change regimes with meta-population simulations and an analysis of long-term North American climate trends to show that seasonally asynchronous regimes are occurring throughout most of North America and that their current spatial distribution may be a strong barrier to dispersal and gene flow across many species' ranges. Thus, even though adaptation to climate change may potentially be more common and rapid than previously thought, species whose ranges overlap with asynchronous regimes will likely succumb to local declines that may be difficult to mitigate via dispersal. Future climate-related predictive frameworks should therefore incorporate asynchronous regimes as well as more traditional measures of climate velocity in order to fully capture the array of potential future climate change scenarios.

show abstract

Impacts of changing rainfall regime on the demography of tropical birds

Cited by 84 publications

References 49 publications

The biotic interactions hypothesis partially explains bird species turnover along a lowland Neotropical precipitation gradient

The biotic interactions hypothesis partially explains bird species turnover along a lowland Neotropical precipitation gradient

Age effects on survival of Amazon forest birds and the latitudinal gradient in bird survival

Spatial and temporal heterogeneity in climate change limits species' dispersal capabilities and adaptive potential

Contact Info

Product

Resources

About