Log in

Relevant bibliographies by topics / Brazilian forest ecology / Journal articles

To see the other types of publications on this topic, follow the link: Brazilian forest ecology.

Journal articles on the topic 'Brazilian forest ecology'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Brazilian forest ecology.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Marcondes, Carlos Brisola, Luiz Gonzaga Santos-Neto, and Ana Leuch Lozovei. "Ecology of Phlebotomine sandflies (Diptera, Psychodidae) in Brazilian Atlantic Forest." Revista da Sociedade Brasileira de Medicina Tropical 34, no. 3 (June 2001): 255–60. http://dx.doi.org/10.1590/s0037-86822001000300005.

Full text

Abstract:

The phlebotomine sandfly fauna of a primary forest reserve at Morretes (eastern Paraná State) was studied, using CDC-like light traps, one night per month, at canopy and ground level, between April 1995 and March 1996. A total of 3,106 insects were collected, identified as belonging to nine species. Lutzomyia ayrozai and Lu.geniculata were predominant, seven other species also being present. Monthly mean temperature, rainfall and the temperature of the collection night significantly influenced the numbers of Lu. ayrozai while the two first factors influenced the numbers of Lu. geniculata, besides the collected quantities of females of the two species. The influence of the factors on Lu. ayrozai numbers was more immediate than in those of Lu. geniculata. Numbers of both species and of the females of Lu. geniculata collected in different seasons, but not at the different heights, varied significantly. Differences between the behaviour of Lu. ayrozai in Morretes and in other regions could be attributed to environmental differences and/or to regional variations in the species, which could constitute species complexes. Hourly variations of collections were different in the species and seasons.

APA, Harvard, Vancouver, ISO, and other styles

2

LOPES, JENIFER DE CARVALHO, LUCAS VILELA, and DAVID M. JOHNSON. "Hornschuchia mellosilvae (Annonaceae) a new species endemic to the Brazilian Atlantic Forest." Phytotaxa 520, no. 3 (September 21, 2021): 273–78. http://dx.doi.org/10.11646/phytotaxa.520.3.6.

Full text

Abstract:

The Atlantic Forest is a biodiversity hotspot that includes different types of phytophysiognomies, mainly forests. Hornschuchia, Annonaceae, is one of its endemic genera. Eight Hornschuchia species are found in the tropical moist forest, three of them both occurring in tropical moist forest and tabuleiro forest, a semideciduous seasonal forest, one occurs in the coastal semideciduous seasonal forest and two inhabit the semideciduous seasonal forest and deciduous seasonal forest far from the coast in Bahia. Here we describe the twelfth species of Hornschuchia, which occurs in the Bahian semideciduous seasonal forest, and present a morphological description, illustration, distribution map and assessment of its conservation status.

APA, Harvard, Vancouver, ISO, and other styles

3

Ansolin, Roni Djeison, Ana Paula Donicht Fernandes, Marco Antônio Bento, Romano Timofeiczyk Junior, Vitor Afonso Hoeflich, and Samuel Alves da Silva. "DO FOREST CONCESSIONS BENEFIT EXTRACTIVIST COMMUNITIES? THE CASE OF THE JAMARI NATIONAL FOREST." FLORESTA 50, no. 2 (April 30, 2020): 1297. http://dx.doi.org/10.5380/rf.v50i2.62742.

Full text

Abstract:

The study aims to analyze the exploration potential of the main non-timber forest products in the Forest Management Unit number III by the communities around Jamari National Forest. Were used the açaí fruit and Brazilian nuts production data based on the sustainable management plan, as well the Brazilian nut crop production for 2015, 2016 and 2017 reported by traditional communities, "Américo Ventura" and "Linhas 113-119". The data were analyzed and interpreted using economic indicators. As the main results, the productive potential amount of açaí fruit and Brazilian nuts available for harvest in each annual crop is 426,86 tons and 124,13 tons, respectively, providing an estimate of annual income of R$ 79.794,64 and R$ 195.134,63, respectively. For Brazilian nuts, the annually demand raised by the community was approximately 8 tons, from 2015 to 2017. The amount harvested represents 44.77% of the productive capacity of the three units. In addition, the cost-benefit ratio indicates that for each Brazilian Real invested in production the producer receives, on average, R$ 5,72. The Brazilian nut extraction shows to be an interesting activity in terms of production and economic value in both communities, presenting a net annual gain of R$ 1.812,108 per collector, for a total group of 50 extractivists residing in the communities “Américo Ventura” and “Linhas 113-119”, between 2015 to 2017. Thus, it is concluded that there is a great potential for exploration of these products in partnership with the concession forest, contributing to the sustainable development of extractivist communities.

APA, Harvard, Vancouver, ISO, and other styles

4

Batista, Anderson, Paula Gomides Vitor Scolforo, Henrique Ferraço Scolforo, José Marcio de Mello, Marcelino Guedes, and José Roberto Soares Scolforo. "Modeling Tree Diameter Growth of Bertholletia excelsa Bonpl. in the Brazilian Amazon." Forests 11, no. 12 (December 8, 2020): 1309. http://dx.doi.org/10.3390/f11121309.

Full text

Abstract:

Modeling the growth of Bertholletia excelsa Bonpl. (B. excelsa) trees in natural forests is important for understanding the species’ ecology and for better defining site-specific management. In this sense, this study aimed to model the diameter growth rate of B. excelsa trees in contrasting forest environments in the Brazilian Amazon. This study was conducted in the Extractive Reserve Rio Cajari (RESEX Cajari). Growth models were fitted at species level to predict diameter growth rate in the two Amazonian forest environments. Subsequently, the age at which the B. excelsa tree in each forest environment reaches the minimum diameter for seed production was calculated by integrating the growth models. In each forest environment, the negative exponential behavior of the diametric growth rate of the tree species was fitted by an appropriate model. The time required for B. excelsa trees to reach the minimum diameter was shorter in the secondary forest environment when compared with that of the old growth terra firme forest (47 and 78 years to reach the diameter of 25 cm in the secondary and old growth terra firme forest, respectively). While the average growth pattern indicated higher diameter growth rates of B. excelsa in the secondary forest environment, the high level of uncertainty in the model’s estimation makes this inference complex. In conclusion, the secondary forest seems a favorable forest environment for the growth of B. excelsa trees, which may be an indicator of the potential for secondary forest environments to produce B. excelsa seeds in the future.

APA, Harvard, Vancouver, ISO, and other styles

5

de Toledo Castanho, Camila, and Alexandre Adalardo de Oliveira. "Relative effect of litter quality, forest type and their interaction on leaf decomposition in south-east Brazilian forests." Journal of Tropical Ecology 24, no. 2 (March 2008): 149–56. http://dx.doi.org/10.1017/s0266467407004749.

Full text

Abstract:

Abstract:Decomposition was studied in a reciprocal litter transplant experiment to examine the effects of forest type, litter quality and their interaction on leaf decomposition in four tropical forests in south-east Brazil. Litterbags were used to measure decomposition of leaves of one tree species from each forest type:Calophyllum brasiliensefrom restinga forest;Guapira oppositafrom Atlantic forest;Esenbeckia leiocarpafrom semi-deciduous forest; andCopaifera langsdorffiifrom cerradão. Decomposition rates in rain forests (Atlantic and restinga) were twice as fast as those in seasonal forests (semi-deciduous and cerradão), suggesting that intensity and distribution of precipitation are important predictors of decomposition rates at regional scales. Decomposition rates varied by species, in the following order:E. leiocarpa>C. langsdorffii>G. opposita>C. brasiliense. However, there was no correlation between decomposition rates and chemical litter quality parameters: C:N, C:P, lignin concentration and lignin:N. The interaction between forest type and litter quality was positive mainly becauseC. langsdorffiidecomposed faster than expected in its native forest. This is a potential indication of a decomposer's adaptation to specific substrates in a tropical forest. These findings suggest that besides climate, interactions between decomposers and plants might play an essential role in decomposition processes and it must be better understood.

APA, Harvard, Vancouver, ISO, and other styles

6

Bernardi, Alison Paulo, Miguel Busarello Lauterjung, Tiago Montagna, Rafael Candido-Ribeiro, Marcia Patricia Hoeltgebaum, Adelar Mantovani, and Maurício Sedrez dos Reis. "Population dynamics of Podocarpus lambertii in southern Brazilian forest–grassland mosaics." Canadian Journal of Forest Research 49, no. 8 (August 2019): 884–91. http://dx.doi.org/10.1139/cjfr-2018-0531.

Full text

Abstract:

The grasslands conversion to forests is occurring globally and modifying the population dynamics of species. Here, we characterized the population dynamics of Podocarpus lambertii Klotzsch ex Endl. over four years in southern Brazilian forest–grassland mosaics. We asked (i) if the studied P. lambertii population would decrease or increase over time and (ii) what the role of forest patches is in the growth and recruitment of a P. lambertii population. Thus, we studied forest–grassland mosaics, stratified the population into four demographic classes, evaluated the population dynamics, and estimated the correlation between canopy cover and average number of individuals. All individuals of P. Lambertii occurred in forest patches. Density was high but decreased from seedlings to the reproductive stage. The population growth rate was λ = 1.025, and the recruitment of individuals was high and variable among years. The transition and mortality rates showed a pattern of reduction from seedlings to the reproductive stage. Mortality rate for seedlings and juveniles was low and concentrated at the smaller heights. The correlations between canopy cover and the average number of individuals were positive and significant. The ecological characteristics of this species and specific conditions provided by forest patches allow population growth and species conservation in the southern Brazilian forest–grassland mosaics.

APA, Harvard, Vancouver, ISO, and other styles

7

Oliveira, Laio Zimermann, and Alexander Christian Vibrans. "An approach to illustrate the naturalness of the Brazilian Araucaria forest." Canadian Journal of Forest Research 50, no. 1 (January 2020): 32–41. http://dx.doi.org/10.1139/cjfr-2019-0239.

Full text

Abstract:

The concept of “naturalness” can be associated with conservation status, resilience, and biodiversity. Its most common definition relates to the degree to which a resource is similar to its original state. Hence, we developed a naturalness assessment method for the Brazilian Araucaria forest. We used data collected within 145 systematically distributed plots over an area of ∼56 000 km2. We selected five indicators to compose a unified naturalness index: (i) evidence of human activities inside the forest stand; (ii) abundance of naturalness-indicator species; (iii) standard deviation of diameter at breast height (Sdbh); (iv) species diversity of the understory–natural regeneration layer; and (v) forest stand landscape metrics. We then calculated the Euclidean distance between the vector generated from the indicators of an ordinary forest stand and the vector generated from a theoretical reference forest (TRF) with maximum naturalness. The reduced Sdbh reflected the stands’ diminished structural diversity as result of historical logging and other ongoing human activities. Most stands presented average naturalness compared with the TRF. Besides the lack of data on undisturbed forests to thoroughly evaluate the naturalness index, evidence suggested that it summarized relevant forest attributes to the extent that protected areas presented greater naturalness than nonprotected areas.

APA, Harvard, Vancouver, ISO, and other styles

8

de Miranda, Evaristo Eduardo, and Cristina Mattos. "Brazilian rain forest colonization and biodiversity." Agriculture, Ecosystems & Environment 40, no. 1-4 (May 1992): 275–96. http://dx.doi.org/10.1016/0167-8809(92)90098-v.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

CAMELO, MEL C., MARCUS A. N. COELHO, and LÍVIA G. TEMPONI. "Anthurium narae—A new species of Araceae from a small forest fragment in southeastern Brazil." Phytotaxa 351, no. 1 (May 29, 2018): 81. http://dx.doi.org/10.11646/phytotaxa.351.1.7.

Full text

Abstract:

Anthurium narae is described from the state of Minas Gerais, in southeastern Brazil. It occurs in a small forest fragment of semideciduous seasonal montane forest, a component of Brazilian Atlantic Forest. Descriptions, illustrations, photographs and comparison with other similar species of Anthurium sect. Urospadix are provided together with comments about geographical distribution, ecology, phenology, and conservation status.

APA, Harvard, Vancouver, ISO, and other styles

10

Martinelli, Luiz A., Sílvia R. M. Lins, and Jéssica C. dos Santos-Silva. "Fine litterfall in the Brazilian Atlantic Forest." Biotropica 49, no. 4 (May 23, 2017): 443–51. http://dx.doi.org/10.1111/btp.12448.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Santos, Norlan de Jesus, Jacques Hubert Charles Delabie, Danilo Gonçalves Saraiva, Fernanda Aparecida Nieri-Bastos, Thiago Fernandes Martins, Marcelo Bahia Labruna, Ianei de Oliveira Carneiro, and Carlos Roberto Franke. "EFFECT OF FOREST COVER ON ECTOPARASITES OF SMALL MAMMALS IN THE BRAZILIAN ATLANTIC FOREST." Oecologia Australis 22, no. 03 (September 11, 2018): 279–90. http://dx.doi.org/10.4257/oeco.2018.2203.06.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

CAMELO, MEL C., MARCUS A. N. COELHO, and LÍVIA G. TEMPONI. "Anthurium narae—A new species of Araceae from a small forest fragment in southeastern Brazil." Phytotaxa 351, no. 1 (May 29, 2018): 81. http://dx.doi.org/10.11646/hytotaxa.351.1.7.

Full text

Abstract:

Anthurium narae is described from the state of Minas Gerais, in southeastern Brazil. It occurs in a small forest fragment of semideciduous seasonal montane forest, a component of Brazilian Atlantic Forest. Descriptions, illustrations, photographs and comparison with other similar species of Anthurium sect. Urospadix are provided together with comments about geographical distribution, ecology, phenology, and conservation status.

APA, Harvard, Vancouver, ISO, and other styles

13

Montade, Vincent, Marie-Pierre Ledru, Thomas Giesecke, Suzette GA Flantua, Hermann Behling, and Odile Peyron. "A new modern pollen dataset describing the Brazilian Atlantic Forest." Holocene 29, no. 8 (May 13, 2019): 1253–62. http://dx.doi.org/10.1177/0959683619846981.

Full text

Abstract:

To improve our understanding of the Atlantic Forest responses to climate changes in space and time, it is essential to explore how the Brazilian Atlantic rain forest is structured as observed in modern pollen assemblages and which climate parameters determine these patterns. In this context, we compiled 196 modern pollen samples including 125 from the Atlantic Forest biome and assigned each sample to one or more eco-physiognomies. We identified seven eco-physiognomies of which four clusters of one or two eco-physiognomies were clearly distinguished, namely (1) Araucaria forest with high elevation grassland, (2) lowland rain forest, (3) semi-deciduous with riverine forests and (4) northeastern Atlantic rain forest. Climatically distinct, these clusters reflect a general temperature increase and precipitation increase from the first to the fourth cluster. Furthermore, comparison of the modern pollen dataset with the Côlonia pollen record from southeastern Brazil revealed that vegetation attributed to Araucaria forest with high elevation grassland showed an important variability with several shifts towards the lowland rain forest. As illustrated by comparison with the long fossil pollen record of Côlonia, developing such a modern training set is crucial for the understanding of responses of Atlantic Forest to environmental changes. However, additional samples are still necessary to improve characterization of different eco-physiognomies at a local scale following a defined floristic and climatic gradient. This sampling effort is becoming increasing urgent as a result of strong biodiversity loss and habitat destruction in this region.

APA, Harvard, Vancouver, ISO, and other styles

14

Braz Carvalho Delitti, Welington, Juli Garcia Pausas, and Deborah Moreira Burger. "Belowground biomass seasonal variation in two Neotropical savannahs (Brazilian Cerrados) with different fire histories." Annals of Forest Science 58, no. 7 (October 2001): 713–21. http://dx.doi.org/10.1051/forest:2001158.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Miettinen, Jukka, Yosio E. Shimabukuro, René Beuchle, Rosana C. Grecchi, Marcela Velasco Gomez, Dario Simonetti, and Frédéric Achard. "On the extent of fire-induced forest degradation in Mato Grosso, Brazilian Amazon, in 2000, 2005 and 2010." International Journal of Wildland Fire 25, no. 2 (2016): 129. http://dx.doi.org/10.1071/wf15036.

Full text

Abstract:

In this paper we analyse the extent of fire-induced forest degradation in Mato Grosso State, Brazil. We utilise a sample based approach used in a previous pan-tropical deforestation survey to derive information on land cover and burned areas in the two major biomes of Mato Grosso: Amazon and Cerrado. Land cover and burned area are mapped for three years (2000–2005–2010) over 77 sample sites (10 000 ha each) distributed systematically throughout the state which covers 90.337 Mha. Our results indicate continuing forest degradation by fires in the state and potentially increasing fire susceptibility of the Amazon forests, regardless of the decrease in deforestation. 2010 witnessed the most extensive fire-induced forest degradation (~300 000 ha) in the forests of the Amazon biome among the study years, regardless of the fact that the fire season was less severe than in 2005. Deforestation in the Amazon biome in Mato Grosso dropped from 590 000 ha year–1 in the 2000–2005 period to 190 000 ha year–1 in the second half of the decade. The findings of this study advocate the inclusion of forest fire effects into carbon accounting initiatives.

APA, Harvard, Vancouver, ISO, and other styles

16

LEÃO, TARCISO C. C., CARLOS R. FONSECA, CARLOS A. PERES, and MARCELO TABARELLI. "Predicting Extinction Risk of Brazilian Atlantic Forest Angiosperms." Conservation Biology 28, no. 5 (March 25, 2014): 1349–59. http://dx.doi.org/10.1111/cobi.12286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Campos, F. S., G. A. Llorente, L. Rincón, R. Lourenço-de-Moraes, and M. Solé. "Protected areas network and conservation efforts concerning threatened amphibians in the Brazilian Atlantic Forest." Web Ecology 16, no. 1 (February 1, 2016): 9–12. http://dx.doi.org/10.5194/we-16-9-2016.

Full text

Abstract:

Abstract. One of the most common conservation strategies used to preserve threatened species is the establishment of protected areas (PAs), providing a maximum representation of biodiversity with the smallest possible cost. The Brazilian Atlantic Forest is one of the 35 global biodiversity hotspots for conservation priorities, having high rate of habitat loss, which is one of the main factors driving threatened amphibians to extinction. Considering that amphibians are the vertebrate group with the largest number of species geographically excluded from global PAs, gap analysis was employed to evaluate whether or not the PAs of the Brazilian Atlantic Forest safeguard the threatened amphibian species in this region. Species status were compared through the official list of threatened species of the Brazilian Fauna and occurrence maps were obtained from the IUCN (International Union for Conservation of Nature) Red List database. Thirty-eight threatened amphibian species were found, accounting for 17 critically endangered (CR), 10 endangered (EN), and 11 vulnerable (VU). The PAs distributed in the Brazilian Atlantic Forest corresponds to only 9 % of the region's entire area. This protected network covers only 30 % of the total geographical range of the assessed species. Besides, a shift in Brazil's environmental policy has led to PAs downgrading. Therefore, the maintenance of PAs integrity is essential, as well as further investment is necessary for the creation of new reserves, avoiding species loss and reducing the extinction risk of the threatened amphibian species in the Brazilian Atlantic Forest.

APA, Harvard, Vancouver, ISO, and other styles

18

Thompson, Cristiane Carneiro, Érica Lourenço da Fonseca, Ana Carolina Paulo Vicente, Fábio de Oliveira Pedrosa, Emanuel Maltempi de Souza, and Helisson Faoro. "Verrucomicrobia in Brazilian Atlantic Forest SoilAuthors' Reply." Applied and Environmental Microbiology 77, no. 11 (May 23, 2011): 3903–4. http://dx.doi.org/10.1128/aem.02838-10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Valdemarin, Karinne Sampaio, Jair Eustáquio Quintino Faria, Fiorella Fernanda Mazine, and Vinicius Castro Souza. "A New Species of Eugenia subg. Pseudeugenia (Myrtaceae, Myrteae) from Brazilian Atlantic Forest." Systematic Botany 45, no. 3 (September 11, 2020): 537–43. http://dx.doi.org/10.1600/036364420x15935294613518.

Full text

Abstract:

Abstract—A new species of Eugenia from the Atlantic forest of Brazil is described and illustrated. Eugenia flavicarpa is restricted to the Floresta de Tabuleiro (lowland forests) of Espírito Santo state and is nested in Eugenia subg. Pseudeugenia. Considering all other species of the subgenus that occur in forest vegetation types of the Atlantic forest phytogeographic domain, Eugenia flavicarpa can be distinguished mainly by the combination of smooth leaves with indumentum on both surfaces, with two marginal veins, usually ramiflorous inflorescences, pedicels 4.5‐9.7 mm long, flower buds 3.5‐4 mm in diameter, and by the calyx lobes that are 2‐3 mm long with rounded to obtuse apices. Morphological analyses were performed to explore the significance of quantitative diagnostic features between the new species and the closely related species, Eugenia farneyi. Notes on the habitat, distribution, phenology, and conservation status of Eugenia flavicarpa are provided, as well as a key for all species of Eugenia subg. Pseudeugenia from forest vegetation of the Atlantic forest phytogeographic domain.

APA, Harvard, Vancouver, ISO, and other styles

20

Scaranello, Marcos A. S., Michael Keller, Marcos Longo, Maiza N. dos-Santos, Veronika Leitold, Douglas C. Morton, Ekena R. Pinagé, and Fernando Del Bon Espírito-Santo. "Estimation of coarse dead wood stocks in intact and degraded forests in the Brazilian Amazon using airborne lidar." Biogeosciences 16, no. 17 (September 13, 2019): 3457–74. http://dx.doi.org/10.5194/bg-16-3457-2019.

Full text

Abstract:

Abstract. Coarse dead wood is an important component of forest carbon stocks, but it is rarely measured in Amazon forests and is typically excluded from regional forest carbon budgets. Our study is based on line intercept sampling for fallen coarse dead wood conducted along 103 transects with a total length of 48 km matched with forest inventory plots where standing coarse dead wood was measured in the footprints of larger areas of airborne lidar acquisitions. We developed models to relate lidar metrics and Landsat time series variables to coarse dead wood stocks for intact, logged, burned, or logged and burned forests. Canopy characteristics such as gap area produced significant individual relations for logged forests. For total fallen plus standing coarse dead wood (hereafter defined as total coarse dead wood), the relative root mean square error for models with only lidar metrics ranged from 33 % in logged forest to up to 36 % in burned forests. The addition of historical information improved model performance slightly for intact forests (31 % against 35 % relative root mean square error), not justifying the use of a number of disturbance events from historical satellite images (Landsat) with airborne lidar data. Lidar-derived estimates of total coarse dead wood compared favorably with independent ground-based sampling for areas up to several hundred hectares. The relations found between total coarse dead wood and variables quantifying forest structure derived from airborne lidar highlight the opportunity to quantify this important but rarely measured component of forest carbon over large areas in tropical forests.

APA, Harvard, Vancouver, ISO, and other styles

21

RIBEIRO, MICHEL, SCOTT A. MORI, ANDERSON ALVES-ARAÚJO, and ARIANE L. PEIXOTO. "A new species of Eschweilera (Lecythidaceae) from the Brazilian Atlantic Forest." Phytotaxa 255, no. 3 (April 11, 2016): 267. http://dx.doi.org/10.11646/phytotaxa.255.3.8.

Full text

Abstract:

Eschweilera sphaerocarpa (Lecythidaceae) is described here as a new species for science. It is closely related to Eschweilera complanata. Due to an area of occupancy of less than 10 km² this species is regarded as endangered according to the standards of the IUCN. This paper provides a description, illustration and, comments on geographic distribution and ecology. Additionally, a diagnostic key to the species of Eschweilera section Tetrapetala is provided.

APA, Harvard, Vancouver, ISO, and other styles

22

Ströher, Patrícia R., Andreas L. S. Meyer, Eugenia Zarza, Whitney L. E. Tsai, John E. McCormack, and Marcio R. Pie. "Phylogeography of ants from the Brazilian Atlantic Forest." Organisms Diversity & Evolution 19, no. 3 (July 16, 2019): 435–45. http://dx.doi.org/10.1007/s13127-019-00409-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Metzger, Jean Paul. "Conservation issues in the Brazilian Atlantic forest." Biological Conservation 142, no. 6 (June 2009): 1138–40. http://dx.doi.org/10.1016/j.biocon.2008.10.012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Bruce, Thiago, Ivana B. Martinez, Oswaldo Maia Neto, Ana Carolina P. Vicente, Ricardo H. Kruger, and Fabiano L. Thompson. "Bacterial Community Diversity in the Brazilian Atlantic Forest Soils." Microbial Ecology 60, no. 4 (October 1, 2010): 840–49. http://dx.doi.org/10.1007/s00248-010-9750-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Costa-Lima, James Lucas, and MARCCUS ALVES. "A new species of Erythroxylum (Erythroxylaceae) from the Brazilian Atlantic Forest." Phytotaxa 141, no. 1 (October 30, 2013): 55. http://dx.doi.org/10.11646/phytotaxa.141.1.4.

Full text

Abstract:

Erythroxylum umbrosum, a new species of Erythroxylum sect. Archerythroxylum (Erythroxylaceae) of the Brazilian Atlantic Forest, which occurs in submontane forests in the states of Alagoas and Pernambuco, northeastern Brazil, is described and illustrated. It is characterized by having non-striated, reduced stipules that are shortly 3–setose at the apex, a staminal cup longer than the calyx lobes, and an endocarp with cylindrical cross-section. The morphological differences of the new species with related and sympatric species are discussed.

APA, Harvard, Vancouver, ISO, and other styles

26

Vanderlei, Renato Soares, Maria Fabíola Barros, Arthur Domingos-Melo, Gilberto Dias Alves, Ana Beatriz Silva, and Marcelo Tabarelli. "Extensive clonal propagation and resprouting drive the regeneration of a Brazilian dry forest." Journal of Tropical Ecology 37, no. 1 (January 2021): 35–42. http://dx.doi.org/10.1017/s0266467421000079.

Full text

Abstract:

AbstractWoody plant resprouting has received considerable attention in the last two decades as human disturbances continue to encroach on terrestrial ecosystems globally. We examined the regeneration mechanisms of a Caatinga dry forest in the context of slash-and-burn agriculture and resprouting ability of the local flora. We excavated two old fields (from 32) experiencing early forest regeneration dominated by the tree Pityrocarpa moniliformis (Fabaceae) to map clonal propagation and, in parallel, submitted 260 seedlings from 13 woody plant species to experimental clipping. What seemed to be ‘seedlings’ popping up around P. moniliformis stumps and remaining adults actually were condensed sets of root suckers connected via complex networks of long, ramified shallow horizontal roots without taproots. We mapped respectively 39 and 783 connected root suckers, which summed 96 m and 910 m in root length. Regarding the seedlings, 33% resprouted across nine species with resprouting rates varying between 5–100%. Seedling height before clipping positively influenced resprouting vigour. Our preliminary results suggest that the Caatinga dry forest supports a relatively high proportion of resprouting species, some of them able to clonally propagate and playing an ecosystem-level role by responding to early forest regeneration and high abundance/biomass across both regenerating and old-growth forests.

APA, Harvard, Vancouver, ISO, and other styles

27

SEBAIO, FABIANE, ÉRIKA MARTINS BRAGA, FELIPE BRANQUINHO, LILIAN TONELLI MANICA, and MIGUEL ÂNGELO MARINI. "Blood parasites in Brazilian Atlantic Forest birds: effects of fragment size and habitat dependency." Bird Conservation International 20, no. 4 (March 9, 2010): 432–39. http://dx.doi.org/10.1017/s0959270910000110.

Full text

Abstract:

SummaryDeforestation, fragmentation and habitat disturbance may alter the relationship between pathogens and hosts. We tested, apparently for the first time, whether habitat fragmentation and degree of dependence on forests affect the prevalence of avian blood parasites. We estimated the prevalence of Plasmodium, Haemoproteus and Trypanosoma through the inspection of 925 blood smears from 109 species captured in six pairs of small (< 30 ha) and large (> 1,000 ha) Brazilian Atlantic Forest fragments. Prevalence of the three types of parasites did not differ between small and large forest patches. Forest-independent birds were usually more infected with Plasmodium and Haemoproteus than other birds, but forest-dependent birds were more infected with Trypanosoma. Parasite richness on birds was not affected by patch size.

APA, Harvard, Vancouver, ISO, and other styles

28

Santos, Jeangelis Silva, Catherine Cristina Claros Leite, Julyana Cristina Cândido Viana, Alexandre Rosa dos Santos, Milton Marques Fernandes, Vítor de Souza Abreu, Timóteo Paladino do Nascimento, et al. "Delimitation of ecological corridors in the Brazilian Atlantic Forest." Ecological Indicators 88 (May 2018): 414–24. http://dx.doi.org/10.1016/j.ecolind.2018.01.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Huber, Bernhard A. "Revision and cladistic analysis of the spider genus Carapoia González-Sponga (Araneae : Pholcidae), with descriptions of new species from Brazil's Atlantic forest." Invertebrate Systematics 19, no. 6 (2005): 541. http://dx.doi.org/10.1071/is05038.

Full text

Abstract:

The pholcid genus Carapoia is revised and interspecific relationships are analysed cladistically. Five new species from the Brazilian Atlantic forest are described (C. ubatuba, C. brescoviti, C. una, C. crasto, C. rheimsae), and new records are given for the four previously described species. Cladistic analysis reveals a biogeographic split between a northern clade (Amazon, Venezuela, Guyana) and a southern clade (Brazilian Atlantic forest). While each of the three northern species is widely distributed, the six Atlantic forest species seem to be restricted to much smaller areas of forest remnants along the Atlantic coast.

APA, Harvard, Vancouver, ISO, and other styles

30

Dalloz, Matheus Fernandes, Renato Crouzeilles, Mauricio Almeida-Gomes, Bernardo Papi, and Jayme Augusto Prevedello. "Incorporating landscape ecology metrics into environmental impact assessment in the Brazilian Atlantic Forest." Perspectives in Ecology and Conservation 15, no. 3 (July 2017): 216–20. http://dx.doi.org/10.1016/j.pecon.2017.07.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Colombo, Patrick, Caroline Zank, Daniel Bühler, Martin Schossler, Rafael Lucchesi Balestrin, Raquel Rocha Santos, Simone Baratto Leonardi, Márcio Borges-Martins, and Laura Verrastro. "Anura, Hylidae, Dendropsophus nahdereri (Lutz and Bokermann, 1963): distribution extension and new state record." Check List 6, no. 3 (August 1, 2010): 429. http://dx.doi.org/10.15560/6.3.429.

Full text

Abstract:

Dendropsophus nahdereri is included in the Dendropsophus marmoratus group. Its distribution is known from the Brazilian states of Paraná and Santa Catarina. Here we report new records of this species and briefly describe the habitat of calling males. We found new localities of occurrence of D. nahdereri in Brazilian states of Santa Catarina and Rio Grande do Sul. We collected calling males in temporary lentic water bodies surrounded by arboreal vegetation, inside and on the border of native forest, and inside Pinus plantations near native forest.

APA, Harvard, Vancouver, ISO, and other styles

32

Felberg Jacobsen, Raquel Helena, Marta Silvana Volpato Sccoti, Suelen Thaina Silva Fagundes, João Fideles de Brito Junior, and Scheila Cristina Biazatti. "IMPACTS ON VEGETATION AFTER SELECTIVE CUTTING IN FOREST CONCESSION AREA IN THE SOUTHWESTERN BRAZILIAN AMAZON." FLORESTA 50, no. 4 (September 29, 2020): 1778. http://dx.doi.org/10.5380/rf.v50i4.65680.

Full text

Abstract:

The forest monitoring after exploration activities is an important tool for forest management, helping to plan the use of forest resources. This research aimed to evaluate the impacts on tree vegetation after one year of the end of forest harvesting in concession area in the Jamari National Forest, RO. The vegetation was evaluated before and after the exploitation in an Annual Production Unit (APU) with cutting rate of 14.14 m³ ha-1. In total, seven permanent plots of 0.5 ha were divided and randomly distributed, where all individuals with diameter at breast height (DBH) ≥ 10 cm were evaluated. Impact evaluation was based on two criteria, the diversity and structure of vegetation (phytosociological, parametric, diametric, and internal). There was a reduction of 2% in plant density and loss of two species. The volumetric supply decreased in the classes above 80 cm of DBH and the diametric structure maintained the largest supply of plants in the lower classes. The exploration activities collaborated in 3.57% to increase the mortality rate, besides causing slight and severe damages in 15 ind.ha-1. The quality of the stem was predominantly straight (82.36%). The damage observed is within the expected limits for areas with low cut rates and subjected to reduced impact exploration techniques. We suggest the continuous monitoring in the medium- and long- term in order to describe the patterns of regeneration and growth of species, mainly logging, projecting the future supply of cutting.Keywords: Management in natural forests; Forest dynamics; Forest concession.

APA, Harvard, Vancouver, ISO, and other styles

33

Lourenço‐de‐Moraes, Ricardo, Felipe S. Campos, Rodrigo B. Ferreira, Karen H. Beard, Mirco Solé, Gustavo A. Llorente, and Rogério P. Bastos. "Functional traits explain amphibian distribution in the Brazilian Atlantic Forest." Journal of Biogeography 47, no. 1 (October 17, 2019): 275–87. http://dx.doi.org/10.1111/jbi.13727.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

de Lima, Marcos Silva, Fernanda dos Santos Silva, Luiz Ricardo Lopes Simone, Rodrigo Brincalepe Salvador, and Edson Guilherme. "Terrestrial gastropods of Humaitá Forest Reserve, southwestern Brazilian Amazon." Check List 17, no. 1 (February 22, 2021): 269–81. http://dx.doi.org/10.15560/17.1.269.

Full text

Abstract:

The molluscan fauna of southwestern Brazilian Amazonia is poorly known due to the lack of focused collection areas in the region since the early 20th century. The present study provides an inventory of the terrestrial gastropods from a forest fragment in the eastern Acre state, Brazil: the Humaitá Forest Reserve (“Reserva Florestal Humaitá”). Live specimens and empty shells were collected between August 2018 and January 2019. A total of 20 species were identified, distributed in 11 families. Most (13) of these species were recorded in Acre for the first time. Furthermore, we confirm the occurrence of Systrophia helicycloides (d’Orbigny, 1835) in Brazil, reiterate the synonymy of Plekocheilus pentadinus (d’Orbigny, 1835) with P. floccosus (Spix in Wagner, 1827), and synonymize Solaropsis peruviana Haas, 1951 with S. juruana Ihering, 1905.

APA, Harvard, Vancouver, ISO, and other styles

35

Metzger, Jean Paul. "Effects of deforestation pattern and private nature reserves on the forest conservation in settlement areas of the Brazilian Amazon." Biota Neotropica 1, no. 1-2 (2001): 1–14. http://dx.doi.org/10.1590/s1676-06032001000100003.

Full text

Abstract:

The effects of deforestation patterns, private nature-reserve extents and agricultural fallow periods on forest conservation were simulated for settlement projects in the Brazilian Amazon that produce a fish-bone pattern of occupation and where slash-and-burn agriculture is predominantly used. Data for simulation was obtained from previous work at the Bragantina region, the oldest agricultural frontier in the Brazilian Amazon. Forest conservation was evaluated using the size of remnant forest fragments, the amount of interior habitat, the connectivity among fragments and the extent of fragmentation. Results showed that the best scenario for forest conservation is the maintenance of 80% of the lot as privatereserve using deforestation pattern that allow to group the reserves from different farmers at the end of the lot. When private-reserve coverage is bellow 80% of the landscape, forest conservation status will be influenced by the deforestation pattern. Some patterns (e.g. random location of deforestation plots) will then be particularly deleterious, producing a highly fragmented landscape, while other patterns (e.g., progressive deforestation from one edge) can allow the maintenance of large forest fragments. To get forest conservation in these cases, private-reserve extent and deforestation pattern should be considered together. Considering both forest conservation and agricultural use, progressive patterns of deforestation (or land use) in a lot of 2,000m by 500m, with private nature-reserves covering 50% of the landscape seems to be the best compromise. To guarantee the private forest preservation, these forests should be pre-established when settlements are planned and grouped at the end of the lots.

APA, Harvard, Vancouver, ISO, and other styles

36

Oliveira-Filho, A. T., and J. A. Ratter. "A study of the origin of central Brazilian forests by the analysis of plant species distribution patterns." Edinburgh Journal of Botany 52, no. 2 (July 1995): 141–94. http://dx.doi.org/10.1017/s0960428600000949.

Full text

Abstract:

The floristic nature of central Brazilian forests, as well as their links to other main forest formations of eastern tropical South America, is assessed by means of multivariate analyses of 106 existing floristic checklists and by the analysis of a series of dot-maps showing the distribution of 55 woody species. Most species of central Brazilian forests seem to conform to two main distribution patterns: (1) species of deciduous and semideciduous forests are dependent essentially on the occurrence of patches of soils of intermediate to high fertility within the cerrado domain and tend to be distributed mostly along a northeast-southwest arch connecting the caatingas to the chaco boundaries; (2) considerable numbers of gallery forest species are dependent on high soil moisture and many appear to link the Amazonian and Atlantic rainforests by crossing the cerrado region in a northwest-southeast route via the dendritic net of gallery forests. Many gallery forest species are habitat generalists, some even occurring in the cerrado vegetation. Nevertheless, significant numbers of gallery endemics are also present. Galleries of the west and north of the Cerrado Province show stronger floristic links to the Amazonian rainforests, while those of the centre and south show stronger affinity with the montane semideciduous forests of southeastern Brazil. Present-day distribution patterns are discussed in the light of the current knowledge of palaeoenvironmental changes in the Neotropics.

APA, Harvard, Vancouver, ISO, and other styles

37

Nepstad, Daniel, Adriana Moreira, Adalberto Verissimo, Paul Lefebvre, Peter Schlesinger, Christopher Potter, Carlos Nobre, et al. "Forest Fire Prediction and Prevention in the Brazilian Amazon." Conservation Biology 12, no. 5 (October 1998): 951–53. http://dx.doi.org/10.1046/j.1523-1739.1998.00004.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

DA COSTA-LIMA, JAMES LUCAS, and EARL CELESTINO DE OLIVEIRA CHAGAS. "Two new Myrciaria (Myrtaceae) from the Brazilian Atlantic Forest." Phytotaxa 399, no. 1 (March 25, 2019): 37. http://dx.doi.org/10.11646/phytotaxa.399.1.4.

Full text

Abstract:

We herein describe two new species of Myrciaria (Myrtaceae) from the Brazilian Atlantic Forest, Myrciaria cambuca and M. una. The two species have long rusty trichomes on the branches and leaves, and were, for a long time, identified as Myrciaria ferruginea. Both are morphologically similar and can be separated by habit (Myrciaria cambuca is a small shrub vs. treelet or tree in M. una), internode length (0.8–2 vs. 3–6 cm long), leaf blade size (1.1–3.5 vs. 3.5–11.5 cm long) and shape (ovate vs. elliptic to elliptic-lanceolate), indumentum on the midrib (long trichomes abaxially vs. on both surfaces), number of secondary veins (8–12 vs. 11–22), number of flowers per inflorescence (2 vs. up to 5 flowers), flower bud shape (obovate vs. ovate), and fruit color (reddish vs. blackish) and indumentum (glabrous vs. pubescent) when ripe. Morphological differences between new species and other congeneric species also are provided. Myrciaria cambuca and M. una occur in coastal forests and are already under threat according to the criteria of the International Union for the Conservation of Nature—IUCN.

APA, Harvard, Vancouver, ISO, and other styles

39

Foerster, S. I. A., A. M. DeSouza, and A. F. A. Lira. "Macroecological approach for scorpions (Arachnida, Scorpiones): β-diversity in Brazilian montane forests." Canadian Journal of Zoology 97, no. 10 (October 2019): 914–21. http://dx.doi.org/10.1139/cjz-2019-0008.

Full text

Abstract:

The montane forests of northeastern Brazil are patches of rainforests, surrounded by xeric vegetation, that originated during the expansion of rainforests in the Pleistocene epoch. Their historical processes make these areas ideal for biogeographical investigations of organisms, particularly in groups with low dispersion and habitat specificity, such as scorpions. We perform a macroecological investigation of the community assembly process of scorpions, disentangling the pattern of β-diversity to test the hypothesis that the similarity in the composition of scorpion fauna in areas of montane forests and coastal rainforests is greater when these localities are geographically close. We also investigated if larger patches of montane forests exhibit a positive species–area relationship. Our results state that species replacement accounts for 71% of the total scorpion β-diversity in montane forest remnants. Additionally, scorpion assemblages were influenced by the spatial arrangement, with a higher similarity between the fauna of montane forests and coastal forests when these areas were geographically close. We did not find a species–area relationship in montane forest patches. The expressive contribution of species replacement to the overall β-diversity may reflect both the high environmental heterogeneity and the historical and independent colonization events that took place in these areas.

APA, Harvard, Vancouver, ISO, and other styles

40

Melo, Arthur Tavares de Oliveira, and Edivani Villaron Franceschinelli. "Gene flow and fine-scale spatial genetic structure in Cabralea canjerana (Meliaceae), a common tree species from the Brazilian Atlantic forest." Journal of Tropical Ecology 32, no. 2 (March 2016): 135–45. http://dx.doi.org/10.1017/s0266467416000067.

Full text

Abstract:

Abstract:The Atlantic forest is the biome most severely affected by deforestation in Brazil. Cabralea canjerana spp. canjerana is a dioecious tree species with widespread distribution in the Neotropical region. This species is considered a model to ascertain population ecology parameters for endangered plant species from the Atlantic forest. Fine-scale spatial genetic structure and pollen-mediated gene flow are crucial information in landscape genetics and evolutionary ecology. A total of 192 adults and 121 offspring were sampled in seven C. canjerana populations in the Southern Minas Gerais State, Brazil, to assess whether pollen-mediated gene flow is able to prevent spatial genetic structure within and among Atlantic forest fragments. Several molecular ecology parameters were estimated using microsatellite loci. High levels of genetic diversity (HE = 0.732) and moderate population structure (θ = 0.133) were recorded. No significant association between kinship and spatial distance amongst individuals within each population (Sp = 0.000109) was detected. Current pollen-mediated gene flow occurs mainly within forest fragments, probably due to short-distance flights of the pollinator of C. canjerana, and also the forest fragmentation may have restricted flight distance. The high levels of genetic differentiation found amongst the seven sites sampled demonstrated how habitat fragmentation affects the gene flow process in natural areas.

APA, Harvard, Vancouver, ISO, and other styles

41

Morellato, Patricia C., and Hermogenes F. leitao-Filho. "Reproductive Phenology of Climbers in a Southeastern Brazilian Forest." Biotropica 28, no. 2 (June 1996): 180. http://dx.doi.org/10.2307/2389073.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Nelson, Bruce W., Valerie Kapos, John B. Adams, Wilson J. Oliveira, and Oscar P. G. Braun. "Forest Disturbance by Large Blowdowns in the Brazilian Amazon." Ecology 75, no. 3 (April 1994): 853–58. http://dx.doi.org/10.2307/1941742.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Fanin, T., and G. R. van der Werf. "Relationships between burned area, forest cover loss and land use change in the Brazilian Amazon based on satellite data." Biogeosciences Discussions 12, no. 11 (June 3, 2015): 8235–63. http://dx.doi.org/10.5194/bgd-12-8235-2015.

Full text

Abstract:

Abstract. Fires are used as a tool in the deforestation process. Yet, the relationship between fire and deforestation may vary temporally and spatially depending on the type of deforestation and climatic conditions. This study evaluates spatiotemporal dynamics of deforestation and fire represented by burned area over the 2002–2012 period in the Brazilian Legal Amazon. As a first step, we compared newly available Landsat-based maps of gross forest cover loss from the Global Forest Change (GFC) project with maps of deforestation extent from the Amazon Deforestation Monitoring Project (PRODES) produced by the Brazilian National Institute for Space Research (INPE). As a second step, we rescaled the Landsat-based data to the 500 m resolution of the Moderate Resolution Imaging Spectroradiometer (MODIS) burned area data (MCD64A1) and stratified this using MODIS land cover data to study the role of burned area in forest cover loss and deforestation. We found that while GFC forest cover loss and PRODES deforestation generally agreed on spatial and temporal dynamics, there were several key differences between the datasets. Both showed a decrease in the extent of forest cover loss or deforestation after 2004, but the drop was larger and more continuous in PRODES than in GFC. The observed decrease in forest cover loss or deforestation rates over our study period was mainly due to lower clearing rates in the evergreen broadleaf forests in the states of Mato Grosso, Pará and Rondônia. GFC indicated anomalous high forest cover loss in the years 2007 and 2010 not reported by PRODES. The burned area data showed that this was predominantly related to increased fire activity occurring outside of the tropical forest area during these dry years, mainly in Pará. This indicates that fire and forest loss dynamics in woodlands or secondary forests may be equally important as deforestation in regulating atmospheric CO2 concentrations. In addition to the decrease in forest cover loss rates, we also found that post-deforestation fire use declined; burned area within 5 years after forest cover loss decreased from 54 to 39% during our study period.

APA, Harvard, Vancouver, ISO, and other styles

44

Piñeiro-Passos, Francisca, Alessandra Rodrigues Santos de Andrade, Felipe Augusto Trindade Gondim-Silva, Tércio Da Silva Melo, and Marcelo César Lima Peres. "Distribution extension of Flirtea picta Perty, 1832 (Opiliones: Cosmetidae) to Brazilian Atlantic Forest with notes on ecology." Check List 12, no. 1 (February 18, 2016): 1843. http://dx.doi.org/10.15560/12.1.1843.

Full text

Abstract:

Herein we report the first record of the Flirtea picta Perty, 1832, harvestmen from the Atlantic Rainforest (Michelin Ecological Reserve – Igrapiúna – Bahia, Brazil). In Brazil, this study extends the distribution of the species, previously known only in Amazonas and Pará states. We collected 157 individuals in three environments: tree-fall gaps, inner forest and edge forest. A brief comment on some ecological aspects of this species is also presented.

APA, Harvard, Vancouver, ISO, and other styles

45

Góes-Neto, Luiz Armando de Araújo, and Alexandre Salino. "First record of Selaginella conduplicata Spring (Selaginellaceae) in the Brazilian Atlantic Forest, Northeastern Brazil." Check List 16, no. 5 (September 29, 2020): 1283–87. http://dx.doi.org/10.15560/16.5.1283.

Full text

Abstract:

This is the first voucher-based record of Selaginella conduplicata Spring in the Brazilian Atlantic Forest and the Brazilian Northeast. This species was considered restricted to the Amazon Basin, and here we report its occurrence beyond the Amazonian limits, expanding its distribution. Illustrations of the diagnostic characters of the species, information of geographic distribution and conservation status are presented. Besides, we present description as well as taxonomic and nomenclatural comments.

APA, Harvard, Vancouver, ISO, and other styles

46

STADNIK, ALINE, MARCELO DA COSTA SOUZA, EVE LUCAS, and NÁDIA ROQUE. "A new species of Plinia (Myrtaceae) from the Bahia Atlantic Forest." Phytotaxa 450, no. 1 (June 24, 2020): 102–8. http://dx.doi.org/10.11646/phytotaxa.450.1.8.

Full text

Abstract:

The Brazilian Atlantic Forest is one of the most diverse biomes in the world. The state of Bahia includes an important portion of the central corridor of Atlantic Forest that runs along the Brazilian coast. Myrtaceae is a dominant family of trees in this biome, and among its genera, Plinia is a genus notable for high number of endangered species in the Bahia Atlantic Forest. Plinia ybotyrype is here described, discussed and illustrated. An identification key for related species is also provided.

APA, Harvard, Vancouver, ISO, and other styles

47

Callisto, Marcos, Adriano Sanches Melo, Darcilio Fernandes Baptista, José Francisco Gonçalves Junior, Manuel Augusto Simões Graça, and Fernanda Gaudio Augusto. "Future ecological studies of Brazilian headwater streams under global-changes." Acta Limnologica Brasiliensia 24, no. 3 (January 8, 2012): 293–302. http://dx.doi.org/10.1590/s2179-975x2012005000047.

Full text

Abstract:

This paper results from discussions triggered during the "Stream Ecology Symposium" that took place at the XIII Congress of the Brazilian Society of Limnology in September of 2011 in Natal, Brazil. Based on our experiences, we have raised several questions regarding ecological studies of headwater streams facing threats under global-changes and proposed numerous subjects to be addressed in future studies in Brazil. These studies deal with the necessity of knowing species biology and the elaboration of models to assess changes (which implies the availability of time-series or large-scale data sets); the ecology of riparian zones and the interchange of materials and energy across the land-water boundaries; forest conversions and standardized sampling strategies and data treatment to assess global change.

APA, Harvard, Vancouver, ISO, and other styles

48

Heckenberger, Michael J., J. Christian Russell, Joshua R. Toney, and Morgan J. Schmidt. "The legacy of cultural landscapes in the Brazilian Amazon: implications for biodiversity." Philosophical Transactions of the Royal Society B: Biological Sciences 362, no. 1478 (January 8, 2007): 197–208. http://dx.doi.org/10.1098/rstb.2006.1979.

Full text

Abstract:

For centuries Amazonia has held the Western scientific and popular imagination as a primordial forest, only minimally impacted by small, simple and dispersed groups that inhabit the region. Studies in historical ecology refute this view. Rather than pristine tropical forest, some areas are better viewed as constructed or ‘domesticated’ landscapes, dramatically altered by indigenous groups in the past. This paper reviews recent archaeological research in several areas along the Amazon River with evidence of large pre-European ( ca 400–500 calendar years before the present) occupations and large-scale transformations of forest and wetland environments. Research from the southern margins of closed tropical forest, in the headwaters of the Xingu River, are highlighted as an example of constructed nature in the Amazon. In all cases, human influences dramatically altered the distribution, frequency and configurations of biological communities and ecological settings. Findings of historical change and cultural variability, including diverse small to medium-sized complex societies, have clear implications for questions of conservation and sustainability and, specifically, what constitutes ‘hotspots’ of bio-historical diversity in the Amazon region.

APA, Harvard, Vancouver, ISO, and other styles

49

Fanin, T., and G. R. van der Werf. "Relationships between burned area, forest cover loss, and land cover change in the Brazilian Amazon based on satellite data." Biogeosciences 12, no. 20 (October 22, 2015): 6033–43. http://dx.doi.org/10.5194/bg-12-6033-2015.

Full text

Abstract:

Abstract. Fires are used as a tool in the deforestation process. Yet, the relationship between fire and deforestation may vary temporally and spatially depending on the type of deforestation and climatic conditions. This study evaluates spatiotemporal dynamics of deforestation and fire represented by burned area over the 2002–2012 period in the Brazilian Legal Amazon. As a first step, we compared newly available Landsat-based maps of gross forest cover loss from the Global Forest Change (GFC) project with maps of deforestation extent from the Amazon Deforestation Monitoring Project (PRODES) produced by the Brazilian National Institute for Space Research (INPE). As a second step, we rescaled the Landsat-based data to the 500 m resolution of the Moderate Resolution Imaging Spectroradiometer (MODIS) burned area data (MCD64A1) and stratified this using MODIS land cover data to study the role of burned area in forest cover loss and deforestation. We found that while GFC forest cover loss and PRODES deforestation generally agreed on spatial and temporal dynamics, there were several key differences between the data sets. Both showed a decrease in the extent of forest cover loss or deforestation after 2004, but the drop was larger and more continuous in PRODES than in GFC. The observed decrease in forest cover loss or deforestation rates over our study period was mainly due to lower clearing rates in the evergreen broadleaf forests in the states of Mato Grosso, Pará, and Rondônia. GFC indicated anomalously high forest cover loss in the years 2007 and 2010, which was not reported by PRODES. The burned area data indicated that this was predominantly related to increased burned area occurring outside of the tropical forest area during these dry years, mainly in Pará. This indicated that fire and forest loss dynamics in woodlands or secondary forests may be equally important as deforestation in regulating atmospheric CO2 concentrations. In addition to the decrease in forest cover loss rates, we also found that post-deforestation fire use declined; burned area within 5 years after forest cover loss decreased from 54 to 39 % during our study period.

APA, Harvard, Vancouver, ISO, and other styles

50

Giroux, Aline, Zaida Ortega, Luiz Gustavo Rodrigues Oliveira-Santos, Nina Attias, Alessandra Bertassoni, and Arnaud Léonard Jean Desbiez. "Sexual, allometric and forest cover effects on giant anteaters’ movement ecology." PLOS ONE 16, no. 8 (August 18, 2021): e0253345. http://dx.doi.org/10.1371/journal.pone.0253345.

Full text

Abstract:

Knowing the influence of intrinsic and environmental traits on animals’ movement is a central interest of ecology and can aid to enhance management decisions. The giant anteater (Myrmecophaga tridactyla) is a vulnerable mammal that presents low capacity for physiological thermoregulation and uses forests as thermal shelters. Here, we aim to provide reliable estimates of giant anteaters’ movement patterns and home range size, as well as untangle the role of intrinsic and environmental drivers on their movement. We GPS-tracked 19 giant anteaters in Brazilian savannah. We used a continuous-time movement model to estimate their movement patterns (described by home range crossing time, daily distance moved and directionality), and provide an autocorrelated kernel density estimate of home range size. Then, we used mixed structural equations to integratively model the effects of sex, body mass and proportion of forest cover on movement patterns and home range size, considering the complex net of interactions between these variables. Male giant anteaters presented more intensive space use and larger home range than females with similar body mass, as it is expected in polygynous social mating systems. Males and females increased home range size with increasing body mass, but the allometric scaling of intensity of space use was negative for males and positive for females, indicating different strategies in search for resources. With decreasing proportion of forest cover inside their home ranges, and, consequently, decreasing thermal quality of their habitat, giant anteaters increased home range size, possibly to maximize the chances of accessing thermal shelters. As frequency and intensity of extreme weather events and deforestation are increasing, effective management efforts need to consider the role of forests as an important thermal resource driving spatial requirements of this species. We highlight that both intrinsic and environmental drivers of animal movement should be integrated to better guide management strategies.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!