scholarly journals Handling uncertainty through Bayesian inference for Species Distribution Modelling in the Amazon Basin region

2021 ◽  
Author(s):  
Renato O. Miyaji ◽  
Pedro L. P. Corrêa

Uma das ferramentas mais utilizadas para o monitoramento da biodiversidade é a modelagem de distribuição de espécies. Para a sua aplicação, é necessário possuir uma grande base de dados confiáveis a respeito da ocorrência de espécies. Entretanto, essa condição não é satisfeita quando existem poucos registros de ocorrência. Nesse contexto, podem ser aplicadas técnicas de tratamento de incertezas. Assim, este trabalho buscou utilizar a abordagem Bayesiana para permitir a modelagem de distribuição de espécies na região da Bacia Amazônica próxima a Manaus (AM), com base em dados coletados pelo projeto GoAmazon 2014/15. Os resultados foram comparados com os resultantes de técnicas clássicas, obtendo desempenhos semelhantes.

2018 ◽  
Vol 373 (1761) ◽  
pp. 20170446 ◽  
Author(s):  
Scott Jarvie ◽  
Jens-Christian Svenning

Trophic rewilding, the (re)introduction of species to promote self-regulating biodiverse ecosystems, is a future-oriented approach to ecological restoration. In the twenty-first century and beyond, human-mediated climate change looms as a major threat to global biodiversity and ecosystem function. A critical aspect in planning trophic rewilding projects is the selection of suitable sites that match the needs of the focal species under both current and future climates. Species distribution models (SDMs) are currently the main tools to derive spatially explicit predictions of environmental suitability for species, but the extent of their adoption for trophic rewilding projects has been limited. Here, we provide an overview of applications of SDMs to trophic rewilding projects, outline methodological choices and issues, and provide a synthesis and outlook. We then predict the potential distribution of 17 large-bodied taxa proposed as trophic rewilding candidates and which represent different continents and habitats. We identified widespread climatic suitability for these species in the discussed (re)introduction regions under current climates. Climatic conditions generally remain suitable in the future, although some species will experience reduced suitability in parts of these regions. We conclude that climate change is not a major barrier to trophic rewilding as currently discussed in the literature.This article is part of the theme issue ‘Trophic rewilding: consequences for ecosystems under global change’.


2019 ◽  
Vol 392 ◽  
pp. 179-195 ◽  
Author(s):  
Sacha Gobeyn ◽  
Ans M. Mouton ◽  
Anna F. Cord ◽  
Andrea Kaim ◽  
Martin Volk ◽  
...  

Plant Biology ◽  
2018 ◽  
Vol 21 (2) ◽  
pp. 248-258
Author(s):  
A. López-Caamal ◽  
L. F. Ferrufino-Acosta ◽  
R. F. Díaz-Maradiaga ◽  
D. Rodríguez-Delcid ◽  
P. Mussali-Galante ◽  
...  

2021 ◽  
Author(s):  
Gabriel Dansereau ◽  
Pierre Legendre ◽  
Timothée Poisot

Aim: Local contributions to beta diversity (LCBD) can be used to identify sites with high ecological uniqueness and exceptional species composition within a region of interest. Yet, these indices are typically used on local or regional scales with relatively few sites, as they require information on complete community compositions difficult to acquire on larger scales. Here, we investigate how LCBD indices can be used to predict ecological uniqueness over broad spatial extents using species distribution modelling and citizen science data. Location: North America. Time period: 2000s. Major taxa studied: Parulidae. Methods: We used Bayesian additive regression trees (BARTs) to predict warbler species distributions in North America based on observations recorded in the eBird database. We then calculated LCBD indices for observed and predicted data and examined the site-wise difference using direct comparison, a spatial autocorrelation test, and generalized linear regression. We also investigated the relationship between LCBD values and species richness in different regions and at various spatial extents and the effect of the proportion of rare species on the relationship. Results: Our results showed that the relationship between richness and LCBD values varies according to the region and the spatial extent at which it is applied. It is also affected by the proportion of rare species in the community. Species distribution models provided highly correlated estimates with observed data, although spatially autocorrelated. Main conclusions: Sites identified as unique over broad spatial extents may vary according to the regional richness, total extent size, and the proportion of rare species. Species distribution modelling can be used to predict ecological uniqueness over broad spatial extents, which could help identify beta diversity hotspots and important targets for conservation purposes in unsampled locations.


Sign in / Sign up

Export Citation Format

Share Document