Nectar volume is positively correlated with flower size in hummingbird-visited flowers in the Brazilian Atlantic Forest

2016 ◽  
Vol 32 (4) ◽  
pp. 335-339 ◽  
Author(s):  
Davi Castro Tavares ◽  
Leandro Freitas ◽  
Maria Cristina Gaglianone
Keyword(s):  
Atlantic Forest ◽  
Generalized Least Squares ◽  
Flower Size ◽  
Floral Traits ◽  
Brazilian Atlantic Forest ◽  
Future Studies ◽  
Nectar Volume ◽  
Corolla Length ◽  
Phylogenetic Constraints ◽  
The Relationship

Abstract:We studied the relationship between flower size and nectar properties of hummingbird-visited flowers in the Brazilian Atlantic Forest. We analysed the nectar volume and concentration as a function of corolla length and the average bill size of visitors for 150 plant species, using the phylogenetic generalized least squares (PGLS) to control for phylogenetic signals in the data. We found that nectar volume is positively correlated with corolla length due to phylogenetic allometry. We also demonstrated that larger flowers provide better rewards for long-billed hummingbirds. Regardless of the causal mechanisms, our results support the hypothesis that morphological floral traits that drive partitioning among hummingbirds correspond to the quantity of resources produced by the flowers in the Atlantic Forest. We demonstrate that the relationship between nectar properties and flower size is affected by phylogenetic constraints and thus future studies assessing the interaction between floral traits need to control for phylogenetic signals in the data.

Trophic similarity and coexistence of Carollia perspicillata and Sturnira lilium (Phyllostomidae), two sympatric fruit bats from the Brazilian Atlantic forest

Mammalia ◽  
2016 ◽  
Vol 80 (4) ◽  
Author(s):  
Eduardo Ribeiro Sartore ◽  
Nelio Roberto dos Reis
Keyword(s):  
Atlantic Forest ◽  
Brazilian Atlantic Forest ◽  
Fruit Bats ◽  
Carollia Perspicillata ◽  
Trophic Similarity ◽  
The Relationship

AbstractThe objective of this study was to evaluate the relationship between availability and consumption of food for two species of Neotropical fruit bats

Thresholds in the relationship between functional diversity and patch size for mammals in the Brazilian Atlantic Forest

2015 ◽  
Vol 18 (6) ◽  
pp. 499-511 ◽  
Author(s):  
M. Magioli ◽  
M. C. Ribeiro ◽  
K. M. P. M. B. Ferraz ◽  
M. G. Rodrigues
Keyword(s):  
Functional Diversity ◽  
Atlantic Forest ◽  
Patch Size ◽  
Brazilian Atlantic Forest ◽  
The Relationship

The centipede genus Otostigmus Porat in Brazil: Description of three new species from the Atlantic Forest; a summary and an identification key to the Brazilian species of this genus (Chilopoda, Scolopendromorpha, Scolopendridae, Otostigminae)

Zootaxa ◽  
2012 ◽  
Vol 3280 (1) ◽  
pp. 1 ◽  
Author(s):  
AMAZONAS CHAGAS-JÚNIOR
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
The State ◽  
Junior Synonym ◽  
Identification Key ◽  
Nominal Species ◽  
Brazilian Atlantic Forest ◽  
Three New Species ◽  
First Time ◽  
New Distribution

Three new species of Otostigmus Porat, 1876 from Brazilian Atlantic Forest are described. Otostigmus beckeri sp. n. andO. lanceolatus sp. n. are described from the state of Bahia and O. giupponii sp. n. from the state of Espírito Santo. InBrazil, the otostigmine scolopendrid genus Otostigmus comprises 22 species. A summary of Brazilian Otostigmus speciesis presented with new distribution records, taxonomic remarks when appropriate and an identification key. Otostigmus sul-catus Meinert, 1886 is recorded for the first time from Brazil; the Andean Otostigmus silvestrii Kraepelin 1903, previouslyrecorded from Brazil, is here considered not to be present in this country. Eight nominal species are regarded here as newsynonyms. Five of them—Otostigmus pradoi Bücherl, 1939, O. longistigma Bücherl, 1939, O. longipes Bücherl, 1939,O. langei Bücherl, 1946 and O. dentifusus Bücherl, 1946—are based on females of O. tibialis Brölemann, 1902. O. latipesBücherl, 1954 is conspecific with and is considered a junior synonym of O. sulcatus Meinert, 1886; O. limbatus diminutusBücherl, 1946 is a junior synonym of O. limbatus Meinert, 1886 and O. fossulatus Attems, 1928 is a junior synonym of O. goeldii Brölemann, 1898. A lectotype is designated for O. goeldii.

scholarly journals Hide-and-Seek with Tiny Neotenic Beetles in One of the Hottest Biodiversity Hotspots: Towards an Understanding of the Real Diversity of Jurasaidae (Coleoptera: Elateroidea) in the Brazilian Atlantic Forest

Biology ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 420
Author(s):  
Gabriel Biffi ◽  
Simone Policena Rosa ◽  
Robin Kundrata
Keyword(s):  
Atlantic Forest ◽  
Field Research ◽  
Transitional Zone ◽  
Biodiversity Hotspot ◽  
Biodiversity Hotspots ◽  
Brazilian Atlantic Forest ◽  
Life Stages ◽  
Adult Males ◽  
Undescribed Species ◽  
First Time

Jurasaidae are a family of neotenic elateroid beetles which was described recently from the Brazilian Atlantic Forest biodiversity hotspot based on three species in two genera. All life stages live in the soil, including the larviform females, and only adult males are able to fly. Here, we report the discovery of two new species, Jurasai miraculum sp. nov. and J. vanini sp. nov., and a new, morphologically remarkable population of J. digitusdei Rosa et al., 2020. Our discovery sheds further light on the diversity and biogeography of the group. Most species of Jurasaidae are known from the rainforest remnants of the Atlantic Forest, but here for the first time we report a jurasaid species from the relatively drier Atlantic Forest/Caatinga transitional zone. Considering our recent findings, minute body size and cryptic lifestyle of all jurasaids, together with potentially high numbers of yet undescribed species of this family from the Atlantic Forest and possibly also other surrounding ecoregions, we call for both field research in potentially suitable localities as well as for a detailed investigation of a massive amount of already collected but still unprocessed materials deposited in a number of Brazilian institutes, laboratories and collections.

Sharing sound: Avian acoustic niches in the Brazilian Atlantic Forest

Biotropica ◽  
2021 ◽  
Author(s):  
Tristan Kleyn ◽  
Mariane Cruz Kaizer ◽  
Luiza F. Passos
Keyword(s):  
Atlantic Forest ◽  
Brazilian Atlantic Forest

scholarly journals Growing and Flowering in a Changing Climate: Effects of Higher Temperatures and Drought Stress on the Bee-Pollinated Species Impatiens glandulifera Royle

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 988
Author(s):  
Charlotte Descamps ◽  
Najet Boubnan ◽  
Anne-Laure Jacquemart ◽  
Muriel Quinet
Keyword(s):  
Climate Change ◽  
Drought Stress ◽  
Floral Traits ◽  
Limited Resources ◽  
Plant Growth And Development ◽  
Impatiens Glandulifera ◽  
Nectar Volume ◽  
Resistance Strategies ◽  
Physiological Resistance ◽  
Impatiens Glandulifera Royle

Drought and higher temperatures caused by climate change are common stress conditions affecting plant growth and development. The reproductive phase is particularly sensitive to stress, but plants also need to allocate their limited resources to produce floral traits and resources to attract pollinators. We investigated the physiological and floral consequences of abiotic stress during the flowering period of Impatiens glandulifera, a bee-pollinated species. Plants were exposed to three temperatures (21, 24, 27 °C) and two watering regimes (well-watered, water stress) for 3 weeks. Not all parameters measured responded in the same manner to drought and/or heat stress. Drought stress induced leaf senescence, decreasing leaf number by 15–30% depending on growth temperature. Drought also reduced photosynthetic output, while temperature rise affected stomatal conductance. The number of flowers produced dropped 40–90% in response to drought stress, while higher temperatures shortened flower life span. Both stresses affected floral traits, but flower resources diminished in response to higher temperatures, with lower nectar volume and pollen protein content. We conclude that increased temperatures and drought stress, which are becoming more frequent with climate change, can negatively affect flowering, even if plants deploy physiological resistance strategies.

Vegetation trends in a protected area of the Brazilian Atlantic forest

2021 ◽  
Vol 162 ◽  
pp. 106180
Author(s):  
Rosane Gomes da Silva ◽  
Alexandre Rosa dos Santos ◽  
João Batista Esteves Pelúzio ◽  
Nilton César Fiedler ◽  
Ronie Silva Juvanhol ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Protected Area ◽  
Brazilian Atlantic Forest

scholarly journals Implications of Autonomous Vehicles for Accessibility and Transport Equity: A Framework Based on Literature

2021 ◽  
Vol 13 (8) ◽  
pp. 4448
Author(s):  
Alberto Dianin ◽  
Elisa Ravazzoli ◽  
Georg Hauger
Keyword(s):  
Conceptual Model ◽  
Transport System ◽  
Urban Areas ◽  
Autonomous Vehicles ◽  
Scientific Literature ◽  
Social Groups ◽  
Future Studies ◽  
Social Accessibility ◽  
The Relationship

Increasing accessibility and balancing its distribution across space and social groups are two fundamental goals to make transport more sustainable and equitable. In the next decades, autonomous vehicles (AVs) could significantly transform the transport system, influencing accessibility and transport equity. In particular, depending on the assumed features of AVs (e.g., private or collective) and the considered spatial, social, and regulative context (e.g., rural or urban areas), impacts may be very different. Nevertheless, research in this field is still limited, and the relationship between AV assumptions and accessibility impacts is still partially unclear. This paper aims to provide a framework of the key and emerging aspects related to the implications of AVs for accessibility and transport equity. To set this framework, we perform an analysis of the scientific literature based on a conceptual model describing the implications of AVs for the distribution of accessibility across space and social groups. We recognize four main expected impacts of AVs on accessibility: (1) accessibility polarization, (2) accessibility sprawl, (3) exacerbation of social accessibility inequities, and (4) alleviation of social accessibility inequities. These impacts are described and analyzed in relation to the main AV assumptions expected to trigger them through different mechanisms. Based on the results, some recommendations for future studies intending to focus on the relation between AVs, accessibility, and transport equity are provided.

scholarly journals Combining regional to local restoration goals in the Brazilian Atlantic forest

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Cassia M.G. Lemos ◽  
Pedro R. Andrade ◽  
Ricardo R. Rodrigues ◽  
Leticia Hissa ◽  
Ana P. D. Aguiar
Keyword(s):  
Cost Effectiveness ◽  
Atlantic Forest ◽  
Natural Regeneration ◽  
Regional Level ◽  
Target Area ◽  
Brazilian Atlantic Forest ◽  
Regeneration Potential ◽  
Allocation Model ◽  
Alternative Scenarios ◽  
The Cost

AbstractTo achieve regional and international large-scale restoration goals with minimum costs, several restoration commitments rely on natural regeneration, a passive and inexpensive strategy. However, natural regeneration potential may vary within the landscape, mainly due to its historical context. In this work, we use spatially explicit restoration scenarios to explore how and where, within a given region, multiple restoration commitments could be combined to achieve cost-effectiveness outcomes. Our goal is to facilitate the elaboration of forest restoration plans at the regional level, taking into consideration the costs for active and passive restoration methods. The approach includes (1) a statistical analysis to estimate the natural regeneration potential for a given area based on alternative sets of biophysical, land cover, and/or socioeconomic factors and (2) the use of a land change allocation model to explore the cost-effectiveness of combining multiple restoration commitments in a given area through alternative scenarios. We test our approach in a strategic region in the Brazilian Atlantic Forest Biome, the Paraiba Valley in São Paulo State. Using the available data for 2011, calibrated for 2015, we build alternative scenarios for allocating natural regeneration until 2025. Our models indicate that the natural regeneration potential of the region is actually very low, and the cost-effectiveness outcomes are similar for all scenarios. We believe our approach can be used to support the regional-level decision-making about the implementation of multiple commitments aiming at the same target area. It can also be combined with other approaches for more refined analysis (e.g., optimization models).

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