INCT-APA Annual Activity Report最新文献

{"title":"TOPOGRAPHICAL CHARACTERISTICS USED BY S OUTHERN GIANT PETREL Macronectes giganteus AT STINKER POINT, ELEPHANT ISLAND","authors":"M. Petry, L. Krüger, R. G. Moura","doi":"10.4322/APA.2014.030","DOIUrl":"https://doi.org/10.4322/APA.2014.030","url":null,"abstract":"The choice of breeding site is important for a seabird with consequences on the successful raising of its chicks. Seabirds may choose a breeding site taking into account many environmental and biological factors. This study aims to test the association of Southern Giant Petrel nests with topographical parametersat Stinker Point, Elephant Island. 33 Southern Giant Petrel nests were identified using a GPS receptor, and generated 33 random points. The points were plotted on a raster DEM and variables were extracted. We verified the nests were associated with terrain slope and altitude, and that Petrels were using the intermediary elevations (below 90 m) in plain terrains at Stinker Point. As there are also other variables that can influence habitat use, further analysis is needed to establish the exact role of topography on nesting habitat selection.","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124193769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methodology of thermal performance ­assessment of Comandante Ferraz Antarctic Base (Brazil)","authors":"Fernando Boechat Fanticele, C. Álvarez","doi":"10.4322/APA.2014.052","DOIUrl":"https://doi.org/10.4322/APA.2014.052","url":null,"abstract":"The studies on thermal comfort establish the conditions required to evaluate and form an idea concerning a thermal environment appropriate for activities and human occupancy, in addition to the institution of methods and principles for a detailed thermal analysis of an environment. The inhospitable climatic conditions in the Antarctic environment (low temperatures, high wind speeds, isolation and the need for conservation of the natural environment) demand a deep study of several fields comprising the environmental comfort of the buildings, since the observance of national and international regulations related to this subject means an additional connection with personal safety, as well as assuring the health and well-being of the users. The purpose of this research is to assess the level of thermal insulation efficiency of the envelopment of the Comandante Ferraz Brazilian Antarctic Base (EACF, acronym in Portuguese) by means of measurements of thermal comfort indices in pre-selected environments, using for this proper equipment in accordance with international standards. The results showed differences in temperature in evaluated environments and reflect inefficiency in the insulating material.","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121244316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Climatology of the ozone layer and the impact of uv radiation in the environment","authors":"N. Leme, D. Pinheiro, C. Casiccia, E. Quel, E. Wolfran, F. Zaratti","doi":"10.4322/APA.2014.002","DOIUrl":"https://doi.org/10.4322/APA.2014.002","url":null,"abstract":"1Laboratorio de Variaveis Ambientais Tropicais – LAVAT, Instituto Nacional de Pesquisas Espaciais – INPE, Centro Regional do Nordeste – CRN, Natal, Brazil 2Laboratorio Espacial Sul – LASCESM, Universidade Federal de Santa Maria – UFSM, Rio Grande do Sul, Brazil 3Laboratorio de Ozono, Universidad de Magallanes – UMAG, Punta Arenas, Chile 4CEILAP (CITEFA-CONICET), Buenos Aires, Argentina 5Universidad Mayor de San Andres, Laboratorio de Ozono e RUV, La Paz, Bolivia *e-mail: neusa_paesleme@yahoo.com.br","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128738353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Population Fluctuation of Pygoscelis Papua and Pygoscelis Antarctica, Elephant Island, South Shetlands, Antarctica","authors":"R. Piuco, Jaqueline Brummelhaus, M. Petry, M. Sander","doi":"10.4322/apa.2014.068","DOIUrl":"https://doi.org/10.4322/apa.2014.068","url":null,"abstract":"Reproductive population size of both the Gentoo penguin (Pygoscelis papua) and Chinstrap penguin (Pygoscelis antarctica) has changed over the last decades in many sites in the South Shetlands Islands. We evaluated the population sizes of these species on Stinker Point, Elephant Island, South Shetlands, Antarctic, during the breeding season 2009, 2010 and 2011, and we compared with preterit studies. Over the last 40 years, the number of breeding pairs here have shown uctuations, with changes of up to 32%. It is possible that these uctuations are related to the variation in prey availability and/or climate change. However, additional census and demographic surveys in Elephant Island are clearly needed to determine whether the decline represents a long-term trend or random circumstantial uctuations.","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129094543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Your Neighbor is an Enemy: The Relation Between Consumption Frequency and the Distance from Food Source","authors":"Suzana Seibert, M. Petry","doi":"10.4322/APA.2014.102","DOIUrl":"https://doi.org/10.4322/APA.2014.102","url":null,"abstract":"e Brown skua is a top predator seabird. During the breeding season it feeds mainly on terrestrial resources, where the most recorded are penguins. e presence of Cape petrel in Brown skua chicks regurgitations was evaluated in relation to nesting distance to the Cape petrel colony at Elephant Island. A 45% rate of spontaneous regurgitations of Cape petrels was registered and this frequency was signi cantly related to nesting distance from the Cape petrel colony. Pygoscelis sp. remains were registered in just 15% of samples. Two hypotheses can be accepted, either it indicates that brown skuas are selecting nesting sites that are closer to Cape petrel colonies, or they are just acting opportunistically. An important observation is that penguins were not the most consumed seabird. Food consumption patches were di erent than expected, reinforcing the importance of more diet investigations.","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115778861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conservation Status of Moss Species in Northern Maritime Antarctic Based on the Index of Ecological Significance","authors":"F. Victoria, M. P. D. Albuquerque, Cristiane Barbosa D Oliveira, A. Pereira","doi":"10.4322/apa.2014.063","DOIUrl":"https://doi.org/10.4322/apa.2014.063","url":null,"abstract":"e aim of this work was to verify moss conservation status on ice-free areas of northern Maritime Antarctic, including data of Elephant Island, King George Island and Deception Island. e study started with the classi cation and description of the plant communities based primarily on phytosociological and biodiversity data. All records were obtained from 1991-1992 to 2003-2004 austral summers. e coverage degree and frequency of each species found was used to calculate the index of ecological signi cance. 22 most frequent species based on all island records were found. e most important species in both studied areas were Sanionia uncinata (Hedw.) Loeske, Polytrichastrum alpinum (Hedw.) G. L. Smith, Bartramia patens Brid., respectively, occurring in all the studied islands. ese results demonstrate the fragility of plant communities in Maritime Antarctic, based on the low frequency and coverage of most species known to this area. Keyword: Bryophyta, ice-free areas, plant communities http://dx.doi.org/10.4322/apa.2014.063","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114533351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aspects of population structure of nacella concinna (Strebel, 1908) (Gastropoda Nacellidae) at Admiralty Bay, King George Island, Antarctica","authors":"M. Figueiredo, H. P. Lavrado","doi":"10.4322/APA.2014.044","DOIUrl":"https://doi.org/10.4322/APA.2014.044","url":null,"abstract":"Antarctic intertidal zones are extremely stressful environments, and the Antarctic limpet Nacella concinna is one of the most conspicuous components of the megafauna, colonizing these areas at Admiralty Bay. This species has the potential to be a biomonitor, since it suffers the direct effects of environmental variations and anthropic impacts. In the summer 2010, specimens of N. concinna were collected at 6 sites in Admiralty Bay, in order to investigate population variability. Most individuals were larger than 20 mm, with positive allometric growth. Females were smaller and usually outnumbered males in the population. The preliminary results showed that limpets near the Brazilian station did not present any atypical values, so it seems that human activities do not significantly affect the population structure. Differences found should be considered a response to natural physical or biological factors.","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125359328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDIES OF GRAVITY WAVES AT FERRAZ STATION (62° S) A ND RECENT OBSERVATIONS","authors":"J. Bageston, P. Batista, C. M. Wrasse, D. Gobbi, N. Leme, R. Hibbins, D. Fritts","doi":"10.4322/APA.2014.019","DOIUrl":"https://doi.org/10.4322/APA.2014.019","url":null,"abstract":"In this study we will present a brief review of mesospheric gravity waves that have been observed at Comandante Ferraz Antarctica Station, EACF (62.1° S and 58.4° W). First, we will show the main results of a campaign conducted from April to October of 2007, with more than 230 events. The main characteristics of the gravity waves are presented as follows: horizontal wavelengths between 10 and 65 km; periods between 5 and 35 minutes, and phase speed ranging from 5 to 120 m/s. Later, we will show the recent advances related to the observations of temperature, winds and gravity waves in the Mesosphere and Lower Thermosphere (MLT) over Ferraz station. In this sense, examples of temperature and wind data will be presented. Finally, we will show the partial conclusions and future prospects.","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125674903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meiofauna and microphytobenthos of Martel Inlet (Admiralty Bay, King George Island, Antarctica)","authors":"T. N. Corbisier, R. S. P. Skowronski, P. F. Gheller, M. Petti","doi":"10.4322/APA.2014.012","DOIUrl":"https://doi.org/10.4322/APA.2014.012","url":null,"abstract":"Studies on the meiofauna community in Admiralty Bay started in 1991, when samples were collected through SCUBA diving in front of the Brazilian Station “Comandante Ferraz” (Martel Inlet) at depths ranging from 6 to 25 m. The dominant groups were Nematoda and Harpacticoida, followed by nauplii and Polychaeta. The density of meiofauna in Martel Inlet, excluding the ice scour affected areas, was high, and varied from 3,523±2,117 to 7,641±388 ind.10 cm-2 (mean ± SD) at 6-11 m depth, and from 3,479±1,205 to 8,216±3,030 ind.10 cm-2 at 18-25 m depth (Skowronski et al., 1998). Further samplings, including measurement of microphytobenthic biomass, were done at 15-20 m depth in seven areas of Martel Inlet: in front the Brazilian Station (CF), Yellow Point (YP), Rock O Connor (RO), Ullman Point (UP), Botany Point (BP), Hennequin Point (HP) and Plaza Point (PP) (Figure 1). The sampling was undertaken during two consecutive summers (1996/97 and 1997/98) and the results revealed that high meiofaunal densities are characteristic of this whole inlet, varying between 1,952±326 and 6,738±1542 ind.10 cm-2 and were correlated with the percentage of gravel, silt and clay (Skowronski & Corbisier, 2002). In both summers, the areas with the highest densities were CF and UP and also HP in the first summer and PP in the second (Figure 1). There was no significant difference in the densities between the two summers, although the higher value of microphytobenthic biomass, the potential food for the meiofauna, was recorded in the first summer. Horizontal differences were found in the microphytobenthic biomass throughout the inlet and seemed to be more related to the sediment characteristics, but no clear pattern of microphytobenthic distribution could be distinguished. An inter-summer variation was observed: the first summer showed the highest microphytobenthic biomass apparently related to more hydrodynamic conditions, which causes the deposition of allochthonous material (Skowronski et al., 2009). A positive correlation between the microphytobenthos biomass and the meiofaunal densities was observed during the second summer, when the microphytobenthos biomass was approximately 25% lower than in the first summer (Skowronski et al., 2009). This might have acted as a limiting factor to the meiofauna in some of the areas (Skowronski & Corbisier 2002). It may be supposed that the stronger hydrodynamic conditions of the first summer led to a high deposition of phytodetritus (phaeopigments), which masked the interaction between the meiofauna and the microphytobenthos. The bathymetric variation of the meiofauna and the microphytobenthos was also evaluated along transects (10 to 60 m depth) in five areas (CF, YP, RO, UP and BP) in Martel Inlet during the summer of 1997/98 and 2004/05 (Gheller, 2007; Skowronski et al., 1998; 2009). Concerning the microphytobenthos, mean biomass values were inversely related to the depth gradient. The highest values were found at 10 to 20 m (mean ± SD","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126989616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global patterns in soil bacterial community composition across a continental scale","authors":"L. N. Lemos, A. K. Suleiman, A. Pereira, L. Roesch","doi":"10.4322/APA.2014.025","DOIUrl":"https://doi.org/10.4322/APA.2014.025","url":null,"abstract":"Although patterns of variation regarding macroorganisms have been studied extensively, the links between microbial biogeography and the environmental factors that shape microbial communities are largely unexplored. Here we tested the Baas Becking hypothesis for microbial community distribution by analysing the soil bacterial community from the Brazilian Pampa and King George Island, Antarctica. The genetic community structure was assessed by automated ribosomal intergenic spacer analysis (ARISA fingerprint). Bacterial patterns were quantified by using hierarchical clustering and by the detection of the shared taxonomic unities between the environments. Geographical patterns in bacterial community structure were detected by broad-spectrum (between samples from different geographic locations) and specific-spectrum (within samples from different geographic locations), suggesting that microbial communities exhibit biogeographic patterns at different scales and that, at least, some taxonomic unities have a wide distribution. These preliminary results support the idea that “everything is everywhere, but, the environment selects”.","PeriodicalId":169975,"journal":{"name":"INCT-APA Annual Activity Report","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126669755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}