Landsat 8 TIRS-derived relative temperature and thermal heterogeneity predict winter bird species richness patterns across the conterminous United States

2020 ◽  
Vol 236 ◽  
pp. 111514 ◽  
Author(s):  
Paul R. Elsen ◽  
Laura S. Farwell ◽  
Anna M. Pidgeon ◽  
Volker C. Radeloff
2006 ◽  
Vol 274 (1607) ◽  
pp. 165-174 ◽  
Author(s):  
Carsten Rahbek ◽  
Nicholas J Gotelli ◽  
Robert K Colwell ◽  
Gary L Entsminger ◽  
Thiago Fernando L.V.B Rangel ◽  
...  

The causes of global variation in species richness have been debated for nearly two centuries with no clear resolution in sight. Competing hypotheses have typically been evaluated with correlative models that do not explicitly incorporate the mechanisms responsible for biotic diversity gradients. Here, we employ a fundamentally different approach that uses spatially explicit Monte Carlo models of the placement of cohesive geographical ranges in an environmentally heterogeneous landscape. These models predict species richness of endemic South American birds (2248 species) measured at a continental scale. We demonstrate that the principal single-factor and composite (species-energy, water-energy and temperature-kinetics) models proposed thus far fail to predict ( r 2 ⩽0.05) the richness of species with small to moderately large geographical ranges (first three range-size quartiles). These species constitute the bulk of the avifauna and are primary targets for conservation. Climate-driven models performed reasonably well only for species with the largest geographical ranges (fourth quartile) when range cohesion was enforced. Our analyses suggest that present models inadequately explain the extraordinary diversity of avian species in the montane tropics, the most species-rich region on Earth. Our findings imply that correlative climatic models substantially underestimate the importance of historical factors and small-scale niche-driven assembly processes in shaping contemporary species-richness patterns.


2020 ◽  
Vol 195 (5) ◽  
pp. 802-817 ◽  
Author(s):  
Matthew Schumm ◽  
Alexander E. White ◽  
K. Supriya ◽  
Trevor D. Price

2006 ◽  
Vol 33 (4) ◽  
pp. 683-693 ◽  
Author(s):  
Tzung-Su Ding ◽  
Hsiao-Wei Yuan ◽  
Shu Geng ◽  
Chao-Nien Koh ◽  
Pei-Fen Lee

2019 ◽  
Author(s):  
Federico Morelli ◽  
Yanina

ContextThe negative association between elevation and species richness is a well-recognized pattern in macro-ecology. ObjectivesThe aim of this study was to investigate changes in functional evenness of breeding bird communities along an elevation gradient in Europe. MethodsUsing the bird data from the EBCC Atlas of European Breeding Birds we estimated an index of functional evenness which can be assumed as a measure of the potential resilience of communities.ResultsOur findings confirm the existence of a negative association between elevation and bird species richness in all European eco regions. However, we also explored a novel aspect of this relationship, important for conservation: Our findings provide evidence at large spatial scale of a negative association between the functional evenness (potential community resilience) and elevation, independent of the eco region. We also found that the Natura2000 protected areas covers the territory most in need of protection, those characterized by bird communities with low potential resilience, in hilly and mountainous areas.ConclusionsThese results draw attention to European areas occupied by bird communities characterized by a potential lower capacity to respond to strong ecological changes, and, therefore, potentially more exposed to risks for conservation.


2021 ◽  
Vol 127 ◽  
pp. 107774
Author(s):  
Martina L. Hobi ◽  
Laura S. Farwell ◽  
Maxim Dubinin ◽  
Dmitrij Kolesov ◽  
Anna M. Pidgeon ◽  
...  

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