scholarly journals Traffic noise affects forest bird species in a protected tropical forest

2010 ◽  
Vol 0 (0) ◽  
Author(s):  
J. Edgardo Arévalo ◽  
Kimberly Newhard
Keyword(s):  
Tropical Forest ◽  
Traffic Noise ◽  
Bird Species ◽  
Forest Bird

scholarly journals Biological proliferation of 137Cs to forest bird species in a forest ecosystem

2015 ◽  
Vol 64 (1) ◽  
pp. 55-61
Author(s):  
Masashi MURAKAMI ◽  
Takao SUZUKI ◽  
Nobuhito OHTE ◽  
Nobumasa ISHII
Keyword(s):  
Forest Ecosystem ◽  
Bird Species ◽  
Forest Bird

scholarly journals Effects of traffic noise exposure on corticosterone, glutathione and tonic immobility in chicks of a precocial bird

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Romina Flores ◽  
Mario Penna ◽  
John C Wingfield ◽  
Elfego Cuevas ◽  
Rodrigo A Vásquez ◽  
...  
Keyword(s):  
Stress Response ◽  
Stress Responses ◽  
Noise Exposure ◽  
Tonic Immobility ◽  
Traffic Noise ◽  
Bird Species ◽  
Urban Environments ◽  
Acoustic Environment ◽  
Precocial Bird ◽  
Baseline Levels

Abstract Repeated exposure to traffic noise may be perceived as a succession of stressors, and therefore, noisy urban environments could lead to a state of chronic stress. In developing animals, glucocorticoids can have organizational effects on the hypothalamic–pituitary–adrenal axis in addition to the classic activation effects, so evaluating the effect of traffic noise during development is urgently needed. To our knowledge, to date six studies have investigated the effects of traffic noise on baseline corticosterone (CORT) and/or the stress response in birds during development; however, these studies were performed in nestling (altricial species), where confounding factors (e.g. communication between nestlings and parents) could mask the real impact of traffic noise on stress. In this study, we evaluated the effect of traffic noise (traffic noise group vs. rural noise group) on baseline levels of CORT and stress responses in chicks of a precocial bird species, the Japanese quail (Coturnix japonica). Because CORT can also decrease glutathione (GSH) levels (antioxidant and neurotransmitter/modulator), secondly by means of path analysis we investigated whether the strength of the association between CORT levels, GSH levels and tonic immobility (TI) varied in relation to treatment. We observed (i) similar baseline levels of CORT in both groups, (ii) a trend toward higher stress response in the traffic noise group (P = 0.08), (iii) similar TI duration in both groups, (iv) higher GSH levels in the traffic noise group and (v) differences in the strength and sign of the associations in relation to the treatment (traffic vs. rural). We conclude that the acoustic environment perceived during development has implications for physiology and behaviour; as more research is done on this topic, the need for sustainable urban planning will become clearer.

scholarly journals Evidence of change in a low-elevation forest bird community of Hawai'i since 1979

2003 ◽  
Vol 13 (3) ◽  
pp. 175-187 ◽  
Author(s):  
Michelle H. Reynolds ◽  
Richard J. Camp ◽  
Bonnie M. B. Nielson ◽  
James D. Jacobi
Keyword(s):  
Native Species ◽  
Bird Species ◽  
Bird Community ◽  
Natural Area ◽  
Present Evidence ◽  
Forest Bird ◽  
Bird Survey ◽  
Elevational Range ◽  
Abundance And Distribution ◽  
Avian Disease

We evaluated the abundance and distribution of low-elevation forest birds on windward Hawai'i Island during August 1993-February 1994, and present evidence of changes in the species composition of the forest bird community since 1979. Endemic Hawaiian birds occurred in native-dominated forests as low as 120 m elevation. Non-native species were detected at all survey locations. We observed non-native Saffron Finch Sicalis flaveola, previously unrecorded in Puna. Variable circular plot surveys of Kahauale'a Natural Area Reserve indicated the disappearance of two native species ('I'iwi Vestiaria coccinea and 'O'u Psittitostra psittacea), and two non-native additions (Red-billed Leiothrix Leiothrix lutea and Kalij Pheasant Lophura leucomelana) to the study area since the Hawai'i Forest Bird Survey conducted in 1979. We present evidence that native 'Elepaio Chasiempsis sandwichensis has experienced a decrease in population density and an elevational range contraction since 1979. Surveys indicate Puna's forest bird community has had increasing aliens and declining native species since 1979. The persistence of some native bird species within the range of avian disease vectors such as Culex quinquefasciatus in forests below 1,000 m elevation presents an important enigma that requires additional study.

scholarly journals Habitat and population estimates of some threatened lowland forest bird species in Tambopata, south-east Peru

2004 ◽  
Vol 14 (4) ◽  
pp. 261-277 ◽  
Author(s):  
HUW LLOYD
Keyword(s):  
Bird Species ◽  
Selective Logging ◽  
Floodplain Forest ◽  
Primary Forest ◽  
Population Estimates ◽  
Lowland Forest ◽  
Density Estimates ◽  
Forest Bird ◽  
Madre De Dios ◽  
Forest Habitats

Surveys of threatened lowland forest bird species and forest habitats were conducted during a 21-month census of lowland bird communities in Tambopata, Department of Madre de Dios, south-east Peru. A combination of distance sampling census methods and direct counts was used for the census in five sites located along the Rio Madre de Dios and Rio Tambopata. All five sites consisted of different forest types with significantly different habitat components. Three of these sites were classified as primary forest habitats whilst the remaining two were classified as disturbed forests. Population densities were calculated for eight of the threatened species recorded during the census. Density estimates of non-bamboo specialists were higher in primary forest habitats than in disturbed forest habitats. Density estimates of most bamboo specialists were higher in primary Old Floodplain forest with extensive bamboo understorey than in primary Middle/Upper Floodplain forest with smaller, patchy areas of bamboo understorey. Calculation of regional population estimates based on the amount of forest cover from satellite photographs shows that only two of the threatened bird species have substantial populations currently protected by the Parque Nacional Bahuaja-Sonene and Reservada Nacional de Tambopata. Selective logging operations that reduce overall tree biomass and remove a large proportion of palm tree species from primary forest habitats will have an adverse affect on local populations of four of the threatened bird species in the region.

scholarly journals The birds of Korup National Park and Korup Project Area, Southwest Province, Cameroon

1994 ◽  
Vol 4 (1) ◽  
pp. 1-68 ◽  
Author(s):  
Paul G. Rodewald ◽  
Pierre-André Dejaifve ◽  
Arthur A. Green
Keyword(s):  
National Park ◽  
Bird Species ◽  
Montane Forest ◽  
Lowland Forest ◽  
Separate Species ◽  
Forest Reserve ◽  
Project Area ◽  
Forest Bird ◽  
Korup National Park ◽  
First Time

A total of 390 bird species are known to occur in the Korup National Park (KNP) and the surrounding Korup Project Area (KPA). Although the avifauna of KNP is incompletely known, it is already among the most ornithologically diverse lowland forest sites i n Africa. The avian diversity of the KPA is increased by the montane forest bird species of the Rumpi Hills Forest Reserve (RHFR) and the Nta Ali Forest Reserve (NAFR). The lowland and montane forests of the KNP/KPA are very important to the conservation of African forest birds. Four species found in the Korup area are considered globally threatened, and four are considered near-threatened. In addition, 40 species were considered for threatened status, some of which are likely future additions to the threatened list. Twelve of Korup's 36 montane forest bird species are endemic to the montane areas of western Cameroon, eastern Nigeria, and Bioko (Fernando Po). The RHFR is especially important as a refuge for montane birds because much of the montane forest elsewhere in western Cameroon has been cleared for agriculture. Breeding phenology data are provided for many lowland forest species. Additionally, this report provides information on many rarely recorded species for western Cameroon, including several species not previously documented in the region. Kemp's Longbill Macrosphenus ketnpi was recorded for the first time in Cameroon. Because it is sympatric with the Yellow Longbill M. flavicans in Korup, additional evidence now exists for the contention that M. ketnpi and M.flavicans are separate species. The Yellow-chested Apalis Apalisflavidawas also documented for the first time in Cameroon.

scholarly journals Effectiveness of protected areas in conserving tropical forest birds

2020 ◽  
Author(s):  
Victor Cazalis ◽  
Karine Princé ◽  
Jean-Baptiste Mihoub ◽  
Joseph Kelly ◽  
Stuart H.M. Butchart ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Protected Areas ◽  
Bird Species ◽  
Biodiversity Loss ◽  
Forest Birds ◽  
Bird Diversity ◽  
Bird Species Richness ◽  
Positive Effects ◽  
Global Biodiversity ◽  
Underlying Mechanisms

AbstractProtected areas are the cornerstones of global biodiversity conservation efforts1,2, but to fulfil this role they must be effective at conserving the ecosystems and species that occur within their boundaries. This is particularly imperative in tropical forest hotspots, regions that concentrate a major fraction of the world’s biodiversity while also being under intense human pressure3–5. But these areas strongly lack adequate monitoring datasets enabling to contrast biodiversity in protected areas with comparable unprotected sites6,7. Here we take advantage of the world’s largest citizen science biodiversity dataset – eBird8 – to quantify the extent to which protected areas in eight tropical forest biodiversity hotspots are effective at retaining bird diversity, and to understand the underlying mechanisms. We found generally positive effects of protection on the diversity of bird species that are forest-dependent, endemic to the hotspots, or threatened or Near Threatened, but not on overall bird species richness. Furthermore, we show that in most of the hotspots examined this is driven by protected areas preventing both forest loss and degradation. Our results support calls for increasing the extent and strengthening the management efforts within protected areas to reduce global biodiversity loss9–11.

scholarly journals Avifauna of the upper Purus River: relevant records for an area lacking ornithological surveys

2021 ◽  
Vol 61 ◽  
pp. e20216121
Author(s):  
Fernando Igor de Godoy ◽  
Edson Guilherme ◽  
Diego Pedroza ◽  
Ricardo Antônio de Andrade Plácido
Keyword(s):  
Tropical Forest ◽  
Amazon Basin ◽  
Bird Species ◽  
Field Trips ◽  
The State ◽  
Knowledge Gaps ◽  
Number Of Species ◽  
Local Environments ◽  
The World ◽  
High Diversity

Birds are the best-known vertebrate group, although many localities in the world are considered to be knowledge gaps. This is the case of many little-known environments in the Amazon biome, the world’s largest tropical forest. Here, we present a survey of birds in the upper Purus basin, comprising the municipalities of Manoel Urbano and Feijó in the Brazilian state of Acre, and Boca do Acre and Pauini in the state of Amazonas. In this region, poorly-studied habitats, such as open rainforest dominated by palms or bamboo, still predominate. We recorded 452 bird species during 45 field trips between May and July in 2016, and June to August in 2017. Twenty-four of these species are associated with bamboo habitat, 28 are endemic to the southwestern Amazon basin, and seven are threatened with extinction. This high diversity is typical of the western Amazon basin, one of the richest regions in the world in the number of species, due to the heterogeneity of the local environments. The data presented here highlight the importance of the region for the conservation of birds, including species typical of the western Amazon, some of which are still poorly-known.

Sign in / Sign up

Export Citation Format

Share Document