Contribution of River-Created Habitats to Bird Species Richness in Amazonia

Remsen, J. V.; Parker, Theodore A.

doi:10.2307/2387833

Cited by 265 publications

(222 citation statements)

References 10 publications

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“…So, the flooding periods in the Brazilian Atlantic forest would not increase significantly the number of microhabitats, as occurs in the larger Amazonian rivers, where flooding periods take several months and cover large areas (KARR & ROTH 1971, REMSEN & PARKER 1983. However, the pulses of nutrients and energy may have impacts on the food supply.…”

Section: Discussionmentioning

confidence: 99%

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The importance of riparian forest for the maintenance of bird species richness in an Atlantic Forest remnant, southern Brazil

et al. 2007

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We compared the composition and guild structure of bird communities of riparian and upland forest in an Atlantic forest reserve, the Godoy State Park (GP), in northern Paraná State, southern Brazil. Unlimited distance point counts were sampled monthly from September-December 2001, along four trails. Two trails in upland forest (TA and TB) were parallel to each other and about 300 m apart. Two trails in riparian forest (TC and TD) were along the Apertados River, about 100 m away from the river. A total of 145 species were recorded: 81 species were recorded in both upland and riparian forests, 19 species were recorded only in upland forest and 45 species were recorded exclusively in riparian forest. Among the 81 species occurring in both forest types, 18 species had significantly higher numbers of contacts in the riparian forest while only 8 species had significantly higher numbers of contacts in the upland forest. Taking into account the contacts numbers of the species the large frugivores guild was closely associated to the upland forest, while bamboo and vine-tangles insectivore, canopy insectivores, edge omnivores, ground omnivore and midstory insectivores were those more closely related to the riparian forest.

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Section: Discussionmentioning

confidence: 99%

“…ing to the unrivaled avian richness observed in Amazonian lowlands (REMSEN & PARKER 1983, ROBINSON & TERBORGH 1997. However, the importance of surrounding forest of streams and rivers for bird communities and abundance in Brazilian Atlantic Forest has received less attention.…”

Section: Resumo Amentioning

confidence: 99%

The importance of riparian forest for the maintenance of bird species richness in an Atlantic Forest remnant, southern Brazil

et al. 2007

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“…5). For example, dispersion fields in Amazonia are significantly influenced by the distributions of Ϸ70 nonaquatic species that are restricted to riverine habitats in the Amazon-Orinoco-Guiana lowlands (45). In general, the asymmetry of dispersion fields increases from the center to the perimeter of spatially extensive biomes as a result of nonrandom sampling of the regional species pool.…”

Section: Assemblage Dispersion Fields Are Asymmetrical and Exhibit Comentioning

confidence: 99%

Source pool geometry and the assembly of continental avifaunas

Graves

Rahbek²

2005

Proc. Natl. Acad. Sci. U.S.A.

124

154

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Classical niche-assembly models propose that the composition of biotic communities in continental landscapes is determined chiefly by the autecology of species, interspecific competition, and the diversity of resources and habitats within a region. In contrast, stochastic models propose that simulation algorithms can replicate the macroecological patterns, if not the mechanisms, of community assembly. Despite fundamental differences in assumptions, both categories of models assume that species are drawn from regional source pools. We explored the implications of source pool geometry on the assembly of avian communities with an analysis of assemblage dispersion fields, which can be visualized by overlaying the geographic ranges of all species that occur in an assemblage. Contours of species richness surrounding focal quadrats illustrate the decay rate of assemblage similarity with distance and the probable geometry of assemblage source pools. We used a geographic database for 2,891 species of South American birds to characterize dispersion fields for assemblages sampled by 1°l atitude-longitude quadrats (n ϭ 1,676). We show that the median range size of dispersion fields varies by an order of magnitude across the continent. Because abundance generally correlates with geographic range size within taxonomic groups, the number of individuals per species in avifaunal source pools must also vary by an order of magnitude. Most significantly, dispersion field geometry was surprisingly asymmetrical and exhibited complex geographical patterns that were associated with the distribution of biomes. These results are broadly consistent with the predictions of niche-assembly models but offer little support for stochastic assembly models.assemblage dispersion fields ͉ birds F ew subjects in ecology have garnered as much attention or evoked as much debate as the assembly of biotic communities (1-7). The principal axis of controversy concerns the role of deterministic and stochastic processes in structuring local and regional assemblages of species (4,8,9). The classical Gleasonian explanation holds that species are adapted to particular environments (10-12), whereas geographic range size and the composition of plant and animal communities are largely determined by the autecology of species (10), the distribution of resources and habitats, and historical factors that mold the species pool (13-15). On the other hand, competition-assembly models implicitly acknowledge the importance of habitat but argue that interspecific competition and resource exploitation (16-18) along with priority effects during colonization (19) are the primary determinates of community assembly. Because macroecological patterns generated by Gleasonian processes and those resulting from interspecific competition may be indistinguishable at coarse grain sizes in continental landscapes, these ecological mechanisms may be combined in an omnibus niche-assembly model.At the opposite end of the theoretical continuum, the proponents of stochastic assembly models hy...

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“…It has been suggested that local variations in the forest structure may be important ecological factors affecting their habitat use (ORIANS 1969, WILLIS 1977, REMSEN & PARKER 1983, TERBORGH 1985, KARR et al 1990, TERBORGH et al 1990, CINTRA 1997, BORGES et al 1999, CINTRA et al 2006, BANKS & CINTRA 2008.…”

Section: Discussionmentioning

confidence: 99%

“…Studies on habitat use by birds in tropical rainforests have also focused on factors affecting richness and abundance of species and most of the studies on effects of vegetation on birds have concentrated on habitat partitioning by species (REMSEN & PARKER 1983, TERBORGH 1985, and on the effects of vegetation structure on bird guilds or communities (PEARSON 1975, HOWE & SMALLWOOD 1982, TERBORGH et al 1990, LOISELLE & BLAKE 1991. However, few studies have investigated how micro-habitat structure and resource availability affect individual species (but see TERBORGH 1985, CINTRA 1997.…”

Section: Resumo Efmentioning

confidence: 99%

Effects of forest heterogeneity on occurrence and abundance of the scale-backed antbird, Hylophylax poecilinotus (Aves: Thamnophilidae), in the Amazon forest

Cintra

Cancelli

2008

Rev. Bras. Zool.

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Recently, a significant number of studies on neotropical forest bird communities have focused on factors influencing their richness, abundance, and habitat selection. However, few of them have considered populations or individual species, and how habitat structure affects their distribution and abundance. In this study, we investigated how the combined effects of some forest structure components affect the occurrence and abundance of a resident bird species, the scale-backed antbird Hylophylax poecilinotus (Cabanis, 1847). We tested the null hypothesis of no difference between the variation in forest structure components at locations where birds occurred and at locations where they did not. In a pristine Terra Firme forest at the Ducke Reserve, Manaus, we recorded bird occurrence and abundance using mist nets in 56 transects (1 km long each) within a 9 x 9 km trail grid covering 6400 ha. Also in the same 56 transects, we set 50 x 50 m plots and recorded the following seven components of forest structure and landscape: 1) canopy opening, 2) leaf litter, 3) tree abundance, 4) logs, 5) snags, 6) streams, and 7) elevation. We evaluated their effects on avian occurrence and abundance by using models of Multiple Logistic Regression (for bird occurrence) and Multiple Linear Regression (for bird abundance). The results suggested that H. poecilinotus occurred significantly more often in lowland areas, in areas located farther away from streams, and in areas bearing thicker leaf litter. Hylophylax poecilinotus was also more abundant in lowland areas and in areas located further away from streams. Overall, the results indicated that environmental heterogeneity produced by variation in forest structure components affects habitat use by this bird species in the Amazon forest.

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Contribution of River-Created Habitats to Bird Species Richness in Amazonia

Cited by 265 publications

References 10 publications

The importance of riparian forest for the maintenance of bird species richness in an Atlantic Forest remnant, southern Brazil

The importance of riparian forest for the maintenance of bird species richness in an Atlantic Forest remnant, southern Brazil

Source pool geometry and the assembly of continental avifaunas

Effects of forest heterogeneity on occurrence and abundance of the scale-backed antbird, Hylophylax poecilinotus (Aves: Thamnophilidae), in the Amazon forest

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