scholarly journals The influence of Eucalyptus plantations on the macrofauna associated with Salvinia auriculata in Southeast Brazil

2002 ◽  
Vol 62 (1) ◽  
pp. 63-68 ◽  
Author(s):  
M. CALLISTO ◽  
F. A. R. BARBOSA ◽  
P. MORENO
Keyword(s):  
High Altitude ◽  
Atlantic Forest ◽  
Littoral Zone ◽  
Macroinvertebrate Communities ◽  
Vegetation Types ◽  
Aquatic Fern ◽  
Eucalyptus Plantations ◽  
Major Controlling Factor ◽  
High Altitude Lake ◽  
Macroinvertebrate Fauna

The influence of Eucalyptus plantations on the structure and composition of macroinvertebrate communities associated with the aquatic fern Salvinia auriculata Aublet were investigated in a high altitude lake bordered by either secondary Atlantic forest or Eucalyptus plantations. Comparisons of the diversity of Chironomidae (Diptera, Insecta) larvae in the littoral zone between these two vegetation types showed higher diversity of larvae in waters bordered by Eucalyptus. The results demonstrated that the predominance of carnivorous taxa among the macroinvertebrate fauna appears to be the major controlling factor for limiting diversity in lake areas bordered by Eucalyptus.

A New Species of Eugenia subg. Pseudeugenia (Myrtaceae, Myrteae) from Brazilian Atlantic Forest

2020 ◽  
Vol 45 (3) ◽  
pp. 537-543
Author(s):  
Karinne Sampaio Valdemarin ◽  
Jair Eustáquio Quintino Faria ◽  
Fiorella Fernanda Mazine ◽  
Vinicius Castro Souza
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Conservation Status ◽  
Forest Vegetation ◽  
Vegetation Types ◽  
Flower Buds ◽  
Diagnostic Features ◽  
Closely Related Species ◽  
Lowland Forests ◽  
A New Species

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.

Rickettsia rickettsii infecting Rhipicephalus sanguineus sensu lato (Latreille 1806), in high altitude atlantic forest fragments, Ceara State, Brazil

Acta Tropica ◽  
2017 ◽  
Vol 173 ◽  
pp. 30-33 ◽  
Author(s):  
Arannadia Barbosa Silva ◽  
Myrian Morato Duarte ◽  
Robson da Costa Cavalcante ◽  
Stefan Vilges de Oliveira ◽  
Vinicius Figueiredo Vizzoni ◽  
...  
Keyword(s):  
High Altitude ◽  
Atlantic Forest ◽  
Rhipicephalus Sanguineus ◽  
Forest Fragments ◽  
Rickettsia Rickettsii ◽  
Rhipicephalus Sanguineus Sensu Lato

Atlantic Forest recovery after long-term eucalyptus plantations: The role of zoochoric and shade-tolerant tree species on carbon stock

2022 ◽  
Vol 503 ◽  
pp. 119789
Author(s):  
Alex Josélio Pires Coelho ◽  
Pedro Manuel Villa ◽  
Fabio Antônio Ribeiro Matos ◽  
Gustavo Heringer ◽  
Marcelo Leandro Bueno ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Tree Species ◽  
Carbon Stock ◽  
Forest Recovery ◽  
Eucalyptus Plantations

scholarly journals First record of Ceratium furcoides (Dinophyta), an invasive species, in a temporary high-altitude lake in the Iron Quadrangle (MG, Southeast Brazil)

2015 ◽  
Vol 75 (1) ◽  
pp. 98-103 ◽  
Author(s):  
RA. Moreira ◽  
O. Rocha ◽  
RM. Santos ◽  
R. Laudares-Silva ◽  
ES. Dias ◽  
...  
Keyword(s):  
Invasive Species ◽  
High Altitude ◽  
First Record ◽  
Mining District ◽  
Aquatic Communities ◽  
Rainy Period ◽  
Southeast Brazil ◽  
Iron Quadrangle ◽  
Global Connections ◽  
High Altitude Lake

Dinoflagellates of the genus Ceratium are generally marine organisms, but rare occurrences in freshwater have been observed in Brazil. In this paper we are recording for the first time the presence of Ceratium furcoides, an invasive species, in a shallow, natural intermittent pool formed at a high-altitude at the southern end of the Iron Quadrangle, an iron-mining district of Minas Gerais State (Southeast Brazil). Samples were collected in October and November of 2010 (rainy period). The population density of this organism observed in Lagoa Seca (“Dry Pool”) was very low, at most 4 ind L–1. Mountain lakes are extremely vulnerable to atmospheric deposition of organisms, making them valuable witnesses both of the many forms of impact arising from human activities and of the extended global connections that facilitate the dispersion and introduction of new species over great distances. Studies on the population dynamics of C. furcoides in natural tropical systems are still rare and very recent to the brazilian scenario and hence the monitoring of its dynamics and the potential impact on aquatic communities of its becoming established are essential to an understanding of the process of bioinvasion by this species.

Spatiotemporal change of water level in ungauged high-altitude tropical lakes: a DInSAR approach

2021 ◽  
Author(s):  
Sebastián Palomino-Ángel ◽  
Raúl F. Vázquez ◽  
Henrietta Hampel ◽  
Jesús A. Anaya-Acevedo ◽  
Pablo V. Mosquera ◽  
...  
Keyword(s):  
High Altitude ◽  
Water Level ◽  
Mountain Range ◽  
Similar Data ◽  
Water Level Change ◽  
Level Change ◽  
Water Level Changes ◽  
Basin Scale ◽  
High Altitude Lake ◽  
Lake Systems

<p>Spatiotemporal characteristics of physical responses of lakes to external and environmental changes are still largely unknown due to the consistent lack of monitoring of water level and corresponding changes in water storage in lakes. Understanding these changes is a fundamental step in advancing regional management of natural and anthropogenic systems that depend on the water resources of lakes. As an illustrative example, we here report a case study involving lakes of the headwater topical Andes mountain range, which, despite guaranteeing water security to millions of downstream inhabitants, still remain significantly ungauged. We present a novel evaluation of the potential of Differential Interferometric Synthetic Aperture Radar DInSAR techniques for the spatiotemporal analysis of patterns of water level change in lakes such as the ones comprising these ungauged high-altitude lake systems. Time series of Sentinel-1B data for the years 2017 and 2018 were used to generate continuous interferograms representing water level changes in twenty-four lakes of the Cajas National Park, Ecuador. The relation of these water level changes with climatic and topographical factors were analyzed to validate the methodology, and determine any patterns of change and response to climatic drivers. We found relatively high Pearson correlation coefficients between regional precipitation and water level change as estimated from the interferograms. Furthermore, we found an important negative relationship between water level change, as obtained from the DInSAR phase, and lake surface area. The study revealed a spatial trend of this correlation in terms of the altitude of the lakes at the basin scale; that is, lower correlation values were found in the headers of the basins, whilst higher correlation values were found at lower basin altitudes. The results of the present study demonstrate the potential of DInSAR techniques based on Sentinel-1 data for the monitoring of hydrologic changes in open water surfaces, and the possible validation of the DInSAR results with precipitation when gauged water level data is missing. These results are a basis to propose monitoring strategies in ungauged high-altitude lake systems in regions with similar data gauging constraints. Future work will encompass the integration of ongoing water level gauging for further validation of the herein depicted lake water level estimation approach.</p>

Satellite-measured water properties in high altitude Lake Tahoe

2020 ◽  
Vol 178 ◽  
pp. 115839 ◽  
Author(s):  
Menghua Wang ◽  
Wei Shi ◽  
Shohei Watanabe
Keyword(s):  
High Altitude ◽  
Lake Tahoe ◽  
Water Properties ◽  
High Altitude Lake ◽  
Measured Water

scholarly journals Richness and abundance of the cardini group of Drosophila (Diptera, Drosophilidae) in the Caatinga and Atlantic Forest biomes in northeastern Brazil

2014 ◽  
Vol 86 (4) ◽  
pp. 1711-1718 ◽  
Author(s):  
CLÁUDIA ROHDE ◽  
DIVA MARIA IZABEL O. SILVA ◽  
GEÓRGIA F. OLIVEIRA ◽  
LIV S. MONTEIRO ◽  
MARTÍN A. MONTES ◽  
...  
Keyword(s):  
High Altitude ◽  
Atlantic Forest ◽  
Northeastern Brazil ◽  
High Abundance ◽  
Northeastern Region ◽  
Mangrove Swamps ◽  
Historical Relationship ◽  
First Time ◽  
High Diversity

Brazil has a high diversity of flies of the genus Drosophila, and part of this richness is represented by the cardini group. We analyzed the fluctuations in the richness and abundance of this group, in environments that had never previously been studied in the northeastern region of Brazil. Among the 28,204 drosophilids sampled, 1,294 belonged to the cardini group and were represented by D. polymorpha, D. cardini, D. neocardini and D. cardinoides. Occurrences of D. neocardini and D. cardinoides were registered for the first time in the Caatinga. In this biome, D. cardini stood out as having the highest abundance, and D. polymorpha was not observed. In the coastal Atlantic Forest, D. cardini was not registered, but D. polymorpha was found in all the localities investigated. Mangrove swamps were the environment with the lowest abundance and richness of the cardini group. The High-altitude Forest presented the highest richness of this group. We suggest that the high abundance of D. polymorpha in the High-altitude Forest and in the coastal Atlantic Forest may be a reflection of the historical relationship between these two environments.

Rickettsia(Rickettsiales: Rickettsiaceae) Vector Biodiversity in High Altitude Atlantic Forest Fragments Within a Semiarid Climate: A New Endemic Area of Spotted-Fever in Brazil

2016 ◽  
Vol 53 (6) ◽  
pp. 1458-1466 ◽  
Author(s):  
Leonardo Moerbeck ◽  
Vinícius F. Vizzoni ◽  
Erik Machado-Ferreira ◽  
Robson C. Cavalcante ◽  
Stefan V. Oliveira ◽  
...  
Keyword(s):  
High Altitude ◽  
Atlantic Forest ◽  
Endemic Area ◽  
Spotted Fever ◽  
Forest Fragments ◽  
Semiarid Climate
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