scholarly journals Accidental capture of the arboreal rodent Rhipidomys cf. macrurus in a mist-net in Silvânia National Forest, Brazil

2021 ◽  
Vol 7 (1) ◽  
pp. 202
Author(s):  
Marcelino Benvindo-Souza ◽  
Acácio Arlem-Tomaz ◽  
Daiany Folador-Sotero ◽  
Daniela De Melo e Silva ◽  
Wellington Hannibal

We describe a bycatch event of an individual of Rhipidomys cf. macrurus in a mist-net during a chiroptera survey carried out in the Conservation Unit National Forest Silvânia, Silvânia municipality, Goiás, Brazil. Catching animals other than birds and bats in mist-nets is exceptional, so our record is one of the few reported in the literature and involving a rodent. Presumable the individual became entangled while foraging in the vegetation surrounding the mis-net.

Author(s):  
Lucieta Guerreiro Martorano ◽  
Wanny Barbosa Soares ◽  
José Reinaldo da Silva Cabral de Moraes ◽  
Werlleson Nascimento ◽  
Lucas Eduardo de Oliveira Aparecido ◽  
...  

Abstract The Tapajós National Forest (Flona Tapajós) has been providing important ecosystem services to society since the creation of this Conservation Unit in the Amazon. This study analyzed two climatic series from Belterra to identify possible effects on the thermal regime in the municipality as a function of the proximity of the Flona Tapajós and the consolidated grain production center in western Pará. Two climatological normal datasets from the National Institute of Meteorology (INMET) were analyzed (1961-1990 and 1981-2010). Analysis of variance was used to compare averages, extremes (minimums and maximums), and thermal amplitudes. Average temperature was 24.6 °C in the first semester (1961-1990) and 25.2 °C (1981-2010), with maximums of 29.4 °C and 29.9 °C, and minimums of 20.6 and 21.2 °C, respectively. There were no statistical differences in these comparisons. In the second semester the averages increased to 25.2 °C and 26.0 °C, and were statistically different, with maximums of 31.2 °C and 31.6 °C and minimums of 20.4 °C and 21.2 °C, indicating different thermal regimes during 1981-2010. Additionally, from October to December the nights were warmer. The Flona Tapajós may have experienced a reduction in provision of ecosystem services, and the increase in minimum temperatures could be associated with grain production activities in the region.


Rodriguésia ◽  
2016 ◽  
Vol 67 (4) ◽  
pp. 1093-1100 ◽  
Author(s):  
José Herlânio de Lima ◽  
Lucia Helena Soares-Silva

Abstract This study presents the first records of Vriesea friburgensis and Tillandsia polystachia for the central-west region of Brazil. The two species were found in gallery forests of the National Forest of Brasília, Distrito Federal. This conservation unit is located in the core region of the Cerrado domain. This finding extends the number of species of flora of this locality and of the Central-west Region, and also increases the area of distribution of the two species, previously restricted to the northeast, southeast and south of Brazil.


2017 ◽  
Vol 63 (2-3) ◽  
pp. 113-125 ◽  
Author(s):  
Ján Merganič ◽  
Katarína Merganičová ◽  
Bohdan Konôpka ◽  
Miloš Kučera

AbstractSince forests can play an efficient role in the mitigation of greenhouse gas emissions, objective information about the actual carbon stock is very important. Therefore, the presented paper analysed the carbon stock in the living merchantable trees (with diameter at breast height above 7 cm) of the Czech forests with regard to groups of tree species and tree compartments (wood under bark with diameter above 7 cm, wood under bark with diameter below 7 cm, bark, green twigs, foliage, stump and roots). We examined its regional distribution and relationship to the number of inhabitants and the gross domestic product. The data used for the analysis originated from 13,929 forest plots of the first Czech National Forest Inventory performed between 2001 and 2004. The total tree carbon stock was obtained as a sum of the carbon stock in the individual tree compartments estimated from the biomass amount in the compartments multiplied by the relative carbon content. Wood biomass amount was calculated by multiplying a particular part of tree volume with species-specific green wood density. The total amount of carbon stored in forest trees in the Czech Republic was over 327 mill. t, which is about 113 t of carbon per ha of forests. The highest carbon amount (160 mill. t, i.e. 49.0% of the total amount) was fixed in spruce. The minimum carbon amount fixed in the forest cover (14.35 mill. t) was calculated for Ústecký kraj (region), while the maximum carbon amount (51.51 mill. t) was found in Jihočeský kraj.


2011 ◽  
Vol 2 (1) ◽  
pp. 112-116 ◽  
Author(s):  
Roger W. Perry

Abstract Although site fidelity to permanent roost structures by bats is generally known, long-term fidelity to areas such as foraging or drinking sites is unknown. Furthermore, mist-net recaptures of bats over multiple years are rarely reported. Extensive mist-net surveys were conducted over the course of 8 y in the Ouachita National Forest of central Arkansas, United States to investigate long-term site fidelity and recapture rates of individually marked forest bats. Among eight species that were captured, five species were recaptured over spans ≥1 y, including eastern red bats Lasiurus borealis, Seminole bats L. seminolus, evening bats Nycticeius humeralis, tri-colored bats Lasiurus borealis, and northern long-eared bats Myotis septentrionalis. Some individuals were recaptured multiple times over multiple years, and the maximum span over which an individual was recaptured was 1 y for Seminole bats, 2 y for tri-colored bats, 3 y for evening bats, 4 y for eastern red bats, and 5 y for northern long-eared bats. These results indicate long-term site fidelity by multiple bat species to particular forest sites, primarily pools along small intermittent streams. Proximity to these sites should be considered when conducting management activities.


Zootaxa ◽  
2018 ◽  
Vol 4531 (4) ◽  
pp. 554
Author(s):  
EDISON ZEFA ◽  
RIULER CORRÊA ACOSTA ◽  
VITOR FALCHI TIMM ◽  
NEUCIR SZINWELSKI ◽  
MARCO ANTONIO TONUS MARINHO ◽  
...  

In this paper we improve the morphological description of the tree cricket Neoxabea brevipes Rehn, 1913 and a new occurrence record for the species at the São Francisco de Paula National Forest Conservation Unit, State of Rio Grande do Sul, southern Brazil. Morphological characterization is provided together with illustrations emphasizing the most significant diagnostic features, such as the metanotal gland, abdominal specializations and phallic sclerites. The calling song was field recorded, comprising a continuous trill with dominant frequency of 3.6 kHz (19.7°C). The karyotype was described for the first time to Neoxabea Kirby, 1906, including diploid number of 2n=26, with two sexual chromosomes. 


Author(s):  
C.N. Sun

The present study demonstrates the ultrastructure of the gingival epithelium of the pig tail monkey (Macaca nemestrina). Specimens were taken from lingual and facial gingival surfaces and fixed in Dalton's chrome osmium solution (pH 7.6) for 1 hr, dehydrated, and then embedded in Epon 812.Tonofibrils are variable in number and structure according to the different region or location of the gingival epithelial cells, the main orientation of which is parallel to the long axis of the cells. The cytoplasm of the basal epithelial cells contains a great number of tonofilaments and numerous mitochondria. The basement membrane is 300 to 400 A thick. In the cells of stratum spinosum, the tonofibrils are densely packed and increased in number (fig. 1 and 3). They seem to take on a somewhat concentric arrangement around the nucleus. The filaments may occur scattered as thin fibrils in the cytoplasm or they may be arranged in bundles of different thickness. The filaments have a diameter about 50 A. In the stratum granulosum, the cells gradually become flatted, the tonofibrils are usually thin, and the individual tonofilaments are clearly distinguishable (fig. 2). The mitochondria and endoplasmic reticulum are seldom seen in these superficial cell layers.


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