scholarly journals Post-fire reproduction of herbs at a savanna-gallery forest boundary in Distrito Federal, Brazil

2017 ◽  
Vol 77 (4) ◽  
pp. 876-886 ◽  
Author(s):  
K. G. Massi ◽  
C. U. O. Eugênio ◽  
A. C. Franco
Keyword(s):  
Reproductive Activity ◽  
Ground Layer ◽  
Vegetation Recovery ◽  
Herbaceous Species ◽  
Gallery Forest ◽  
Short Term ◽  
Fire Event ◽  
Central Brazil ◽  
Distrito Federal ◽  
Forest Boundary

Abstract In Cerrado, studies of post-fire vegetation recovery show that some herbaceous species are able to flower shortly after fires. However, these were mainly short-term studies that focused on grasslands and savannas. Little is known about the effects of fire on ground layer of forests that border the savannas in Central Brazil. Thus, an accidental burning gave us the opportunity to describe the reproductive activity of the ground layer vegetation after a fire event along a savanna-forest boundary at the IBGE Ecological Reserve, Brasília, Brazil. During the 16-month of the inventory, we registered 170 herbaceous species flowering or fruiting, of which 52 species (31%) may have been influenced by fire that changed their times of reproduction. In the savanna plots reproduction peaked at the end of the rainy season. Of the total number of reproducing species, 90 species occurred only in the savanna and four in the forest. Five herbs were recorded in the forest, savanna and border environments. Late dry season fire probably lead the majority of herbaceous species to have their reproduction spread throughout the study time.

scholarly journals Diet of two sympatric insectivores bats (Chiroptera: Vespertilionidae) in the Cerrado of Central Brazil

2008 ◽  
Vol 25 (1) ◽  
pp. 28-31 ◽  
Author(s):  
Ludmilla M. S. Aguiar ◽  
Yasmine Antonini
Keyword(s):  
Biological Control ◽  
Food Habits ◽  
Sensu Stricto ◽  
Gallery Forest ◽  
Biological Control Agents ◽  
Fecal Analysis ◽  
Agricultural Ecosystems ◽  
Central Brazil ◽  
Gallery Forests ◽  
Distrito Federal

We examined food habits of Vespertilionidae bats Myotis nigricans (Schinz, 1821) and Eptesicus furinalis (d'Orbigny, 1847) by fecal analysis in cerrado sensu stricto and gallery forests, within APA - Gama-Cabeça-de-Veado, Brasília, Distrito Federal, Brazil. Out of 20 fecal samples collected, seven were of Eptesicus furinalis and 13 of Myotis nigricans. The diet of E. furinalis included six orders of insects: Coleoptera (5/7 by items presence), Lepidoptera and Hymenoptera (3/7), Diptera, Hemiptera and Homoptera (1/7). The diet of M. nigricans included all the main orders consumed by E. furinalis (6/13, 4/13, 4/13, 3/13, 1/13, and 4/13 respectively) and one other order: Orthoptera (1/13). Homoptera, Diptera and Orthoptera were collected only in bats captured in gallery forest. There is 80% of overlap in the diet of these two species. Predation on species of Scarabeidae, Hesperiidae, Sphingidae and Saturniidae families confirms bats potential as biological control agents of pests in agricultural ecosystems.

Short-term effects of timber harvest and forest edges on ground-layer mosses and liverworts

2005 ◽  
Vol 83 (6) ◽  
pp. 610-620 ◽  
Author(s):  
Cara R Nelson ◽  
Charles B Halpern
Keyword(s):  
Forest Management ◽  
Edge Effects ◽  
Management Practices ◽  
Timber Harvest ◽  
Ground Layer ◽  
Limited Information ◽  
Short Term ◽  
Before And After ◽  
Logging Effects ◽  
Structural Retention

Limited information exists on the effects of forest management practices on bryophytes, despite their importance to forest ecosystems. We examined short-term responses of ground-layer bryophytes to logging disturbance and creation of edges in mature Pseudotsuga forests of western Washington (USA). The abundance and richness of species were measured in four 1-ha forest aggregates (patches of intact forest) and in surrounding logged areas before and after structural retention harvests. One year after treatment, species richness, total cover, and frequency of most moss and liverwort taxa declined within harvest areas. Within forest aggregates, mosses did not show significant edge effects; however, richness and abundance of liverworts declined with proximity to the aggregate edge. Our results suggest that, over short time frames, 1-ha-sized aggregates are sufficient to maintain most common mosses through structural retention harvests but are not large enough to prevent declines or losses of liverworts. Thus, current standards for structural retention, which allow for aggregates as small as 0.2 ha, may be inadequate to retain the diversity and abundance of species found in mature, undisturbed forests.Key words: bryophyte, edge effects, forest borders, forest management, logging effects, structural retention harvest.

scholarly journals Observations of rapid-fire event tremor at Lascar volcano, Chile

1996 ◽  
Vol 39 (2) ◽  
Author(s):  
G. Asch ◽  
K. Wylegalla ◽  
M. Hellweg ◽  
D. Seidl ◽  
H. Rademacher
Keyword(s):  
Fractal Structure ◽  
Seismic Station ◽  
Active Volcano ◽  
Short Term ◽  
Fire Event ◽  
Local Seismicity ◽  
Short Period ◽  
Wide Range ◽  
Lascar Volcano

During the Proyecto de Investigaciòn Sismològica de la Cordillera Occidental (PISCO '94) in the Atacama desert of Northern Chile, a continuously recording broadband seismic station was installed to the NW of the currently active volcano, Lascar. For the month of April, 1994, an additional network of three, short period, three-component stations was deployed around the volcano to help discriminate its seismic signals from other local seismicity. During the deployment, the volcanic activity at Lascar appeared to be limited mainly to the emission of steam and SO2. Tremor from Lascar is a random, «rapid-fire» series of events with a wide range of amplitudes and a quasi-fractal structure. The tremor is generated by an ensemble of independent elementary sources clustered in the volcanic edifice. In the short-term, the excitation of the sources fluctuates strongly, while the long-term power spectrum is very stationary.

scholarly journals Pisces, Teleostei, Characiformes, Characidae, Hasemania crenuchoides Zarske and Géry, 1999, Hyphessobrycon balbus Myers, 1927 and Oligosarcus planaltinae Menezes and Géry, 1983: new records in Distrito Federal, Central Brazil

Check List ◽  
2010 ◽  
Vol 6 (4) ◽  
pp. 594 ◽  
Author(s):  
Pedro De Podestà Uchôa de Aquino ◽  
Thiago Belisário d'Araújo Couto
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
New Records ◽  
Freshwater Fish Species ◽  
Central Brazil ◽  
Distrito Federal ◽  
Santa Maria

Herein we present new records of three freshwater fish species (Hasemania crenuchoides, Hyphessobrycon balbus and Oligosarcus planaltinae) considered restricted to Central Brazil and previously known only for the upper Rio São Bartolomeu sub-basin. Our data expand their range to other sub-basins in the Distrito Federal, including Sobradinho, Bananal, Santa Maria-Torto, Gama and Ribeirão Santana sub-basins.

scholarly journals An important site for conservation of bats in Brazil: Passa Três cave, São Domingos karst area, with an updated checklist for Distrito Federal (DF) and Goiás state

2018 ◽  
Vol 28 ◽  
pp. 39-51 ◽  
Author(s):  
Maria Elina Bichuette ◽  
Eliana do Amaral Gimenez ◽  
Ives Simões Arnone ◽  
Eleonora Trajano
Keyword(s):  
Rare Species ◽  
Abundant Species ◽  
Karst Area ◽  
Central Brazil ◽  
Distrito Federal ◽  
Threatened Fauna ◽  
Important Site

A checklist of bats from Distrito Federal (DF) and Goiás state (GO) and, particularly a single cave (Passa Três cave), located in São Domingos karst area (GO), central Brazil, is presented. Data is based on literature and surveys carried out during 2,000 years. In total, 66 species were recorded, with 30 using caves as shelters. Passa Três cave harbors nine Phyllostomidae species; the most abundant species werePlatyrrhinuslineatus, Lonchorhinaaurita,DesmodusrotundusandCarolliaperspicillata; and the less abundantsTrachopscirrhosus,AnouracaudiferandGlossophagasoricina. Besides, the cave is shelter of two threatened bats -Lonchophylladekeyseri(Endangered category) andLonchorhinaaurita(Vulnerable category), included at Brazilian List of Threatened Fauna, and of a rare species,Lionycterisspurrelli. Passa Três cave shows enough attributes to be considered as a SICOM (Sites of Importance for Conservation of Bats), which would ensure its protection.

Out-of-Season Breeding in Adult Suffolk Ewes following Light and Melatonin Treatment

1987 ◽  
Vol 1987 ◽  
pp. 88-88
Author(s):  
Sandra J. Ward ◽  
H.LI. Williams
Keyword(s):  
Effective Means ◽  
Reproductive Activity ◽  
Early Spring ◽  
Light Treatment ◽  
Short Term ◽  
Melatonin Treatment ◽  
June July ◽  
Conventional Type

Photostimulation is an effective means of manipulating reproductive activity in most British breeds of sheep. Short term light treatment can initiate oestrus cycles during June/July and thus provides the opportunity for autumn lambing (Williams, 1977). The most effective light treatments comprise a period of supplementary light followed by a period of long nights which requires controlled environmental housing. Recent investigations have demonstrated that melatonin treatment may replace the long night phase thus simplifying management (Williams, 1985). Attempts to dispense with the period of supplementary light by transferring Spring lambing Welsh Mountain ewes abruptly to long nights during early Spring were not as successful as the conventional type of light treatment (Williams, 1967). This investigation was undertaken to compare the response of adult Suffolk crossbred ewes given melatonin in the Spring with or without a priming period of supplementary light.

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