Speciation in amazonian forest birds
WebHere we assess whether this form of sensory drive-often termed "acoustic adaptation"-can generate signal divergence across ecological gradients. By studying avian communities in two Amazonian forest types, we show that songs of 17 "bamboo-specialist" bird species differ in predictable ways from their nearest relatives in adjacent terra firme ... WebOur Foresters for the Birds program trains foresters to assess the existing bird habitat in a forest, make recommendations for improvement, and plan out bird-friendly management …
Speciation in amazonian forest birds
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WebThe majority of the Amazonian forest birds that reached the trans-Andean lowlands came around the Andes from the north. However, a small group seems to have followed the …
WebAmazonian rivers have been proposed to act as geographic barriers to species dispersal, either driving allopatric speciation or defining current distribution limits. The strength of the barrier varies according to the species' ecological … WebFirst, bamboo forest and terra firme forest are relatively similar in structure, both having tall trees and a dense understory. Moreover, phylogenetic data confirm that Amazonian “bamboo-specialist” birds evolved from terra firme species (e.g., Brumfield et al. 2007; Irestedt et al. 2009). We can therefore be certain that we are focusing on ...
WebJul 17, 2024 · In recent years, carbon dioxide emissions have been potentiated by several anthropogenic processes that culminate in climate change, which in turn directly threatens biodiversity and the resilience of natural ecosystems. Tropical rainforests are among the most impacted biological realms. The Belém endemism center, which is one of the … WebIn close communication with evolutionary biologist Ernst Mayr since the early 1960s, Haffer formulated his ideas on the diversification of birds and the effects of barriers. In 1978 …
WebApr 14, 2024 · The regional biota has been assembled over time because of speciation in situ and biotic exchanges with other rainforest regions and the adjacent ecoregions. Currently, there are 485 bird...
WebJul 8, 2009 · Available at ABC’s Climate Change and Birds web page. Nores M (1992) Bird speciation in subtropical South America in relation to forest expansion and retraction. Auk 109:346–357. Google Scholar Nores M (1999) An alternative hypothesis for the origin of Amazonian bird diversity. J Biogeogr 24:475–485 lawrence county erWebRecent studies suggest that speciation in terrestrial vertebrates occurs primarily by allopatric speciation, with high species richness in the Amazon representing the outcome of repeated cycles of geographic isolation, speciation, and range expansions ( 18 ). lawrence county ems tennesseeWebIn Amazonian birds, habitat association is an important component of ecological diversity. Here, we examine the link between habitat association and genetic parameters using 20 … lawrence county engineer ohioWebSpatial and environmental correlates of intraspecific morphological variation in three species of passerine birds from the Purus–Madeira interfluvium, Central Amazonia karcher steam cleaner de4002WebHybridization in headwater regions, and the role of rivers as drivers of speciation in Amazonian birds Evolution. 2015 Jul;69 ... that the wide river courses in the heart of Amazonia may have driven interfluvial divergence during episodes of wet forest retraction away from headwater regions. Taxa as old as 4 Ma in our Amazonian dataset continue ... lawrence county fair lawrenceburg tnWebApr 8, 2024 · Large Amazonian rivers have long been recognized as strong dispersal barriers for vertebrates of upland forests (Capparella, 1991;Moraes et al., 2016;Wallace, 1852), and are an especially strong... lawrence county facebook breaking newsWebLarge Amazonian rivers impede dispersal for many species, but lowland river networks frequently rearrange, thereby altering the location and effectiveness of river barriers through time. These rear... lawrence county fair 2022 new castle pa