scholarly journals A comunidade de Apoidea (Hymenoptera) da Reserva Passa Dois (Lapa, Paraná, Brasil): 1. Diversidade, abundância relativa e atividade sazonal

1993 ◽  
Vol 22 ◽  
Author(s):  
Ivana Dem Freitas Bárbola ◽  
Sebastião Laroca
Keyword(s):  
Grand Nombre ◽  
Southern Brazil ◽  
Wild Bees ◽  
Number Of Species ◽  
Il Y A ◽  
Species Activity ◽  
Flower Visiting ◽  
Number Of Individuals ◽  
Made In

A comunidade de abelhas silvestres (Hymenoptera, Apoidea) da reserva Passa Dois (Lapa, Paraná, Brasil) foi estudada quanto aos aspectos de diversidade, abundância relativa e fenologia. As coletas de abelhas em flores foram realizadas em intervalos de 10 dias, de maio de 1990 a maio de 1991. Um total de 2.361 indivíduos, pertencentes a 158 espécies das seis famílias que ocorrem no Brasil foram amostrados. Destas, Apidae foi a mais abundante em número de indivíduos (41,7 %), seguida de Halictidae (34,3 %), Anthophoridae (10,0 %), Megachilidae (6,3 %), Andrenidae (6,0 %) e Colletidae (1,7 %). Halictidae (5 %) foi a família mais rica em espécies, seguida de Anthophoridae (25,9 %), Megachilidae (12,6 %), Andrenidae (8,9 %), Colletidae (6,3 %) e Apidae (5,7 %). Observou-se uma elevada proporção de espécies representadas por um ou dois indivíduos e um número reduzido de espécies abundantes, o que concorda com levantamentos realizados em outras áreas. Como tendência fenológica geral, verificou-se um decréscimo na atividade de indivíduos e de espécies durante a época mais fria (inverno). Halictidae, Xylocopinae e Apidae mantiveram-se ativas o ano todo, enquanto que Anthophoridae e Megachilidae interromperam suas atividades no período de inverno. Em Colletidae e Andrenidae não foi possível detectar uma clara sazonalidade, devido ao baixo número de exemplares.AbstractThe community of wild bees (Hymenoptera. Apoidea) in the reserva Passa Dois (Lapa, Paraná, Southern Brazil); was studied. Species diversitv. relalive abundance and phenology were examined. Flower visiting bees were sampled at each ten davs, from May 1990 to May 1991. A total of 2.361 individuaIs of 158 species of six families occurring in Brazil, were captured. The results show the predominance of Apidae in individuals (with 41.7 %), followed by Halictidae (34.3 %). Anthophoridae (10 %), Megachilidae (6.3 %) Andrenidae (6.0 %) and Colletidae (1.7 %). Halictidae was the richest family in species (40.5 % of the tolal), followed by Anthophoridae (25.9 %). Megachilidae (12.6 0%), Andrenidae (8,9 %). Colletidae (6,3 %) and Apidae (5,7 %). Most of the species were uncommon. represented by one or two individuals and a reduced number of species were abundante, similarly to some surveys made in other areas in the southern Brazil. As a general phenologic tendency, a decrease of individuals and species activity during the colder season (Winter) was observed. Halictidae, Xylocopinae and Apidae remained atives the whole year, while Anthophoridae and Megachilidae were absent in the Winter. Due to the small number of individuals it was impossible to detect any phenological trend in Colletidae and Andrenidae.RésuméIls sont etudiés à reserva Passa Dois, Lapa. Paraná. sud du Brésil, l’activités sazonales. diversité et abondance relatif d’Apoidea, pendant le periode de mai 1990 à mai 1991. Ces échantillons sont constitués de 2.361 individus qu’appartienent à 158 espàces et montrent la predominance de Halictidae (40,5 %), suivi par Anthophoridae (25,9 %). Megachilidae (12,6 %) Andrenidae (8,9 %). Colletidae (6,3 %) et Apidae (5,7 %). La distríbution des fréquences montrent un grand nombre d’espêces rares, comme est observé en les échantillons des autres localités du sud du Brésil, Comme une tendance phénologique générale, il y a une dépression des activités pendant l’hiver. Halictidae, Xylocopinae et Apidae sont actives tout l’année, pendant qu’Anthophoridae et Megachilidae n’ont pas activité pendant l’hiver. A cause de petit nombre des Colletidae et Andrenidae collectés n’est pas possible montres quelconque tendance phénologique dans ces groups.

scholarly journals La représentation syndicale au-delà de l'entreprise

2005 ◽  
Vol 35 (3) ◽  
pp. 419-466
Author(s):  
Gregor Murray ◽  
Pierre Verge
Keyword(s):  
Formation Professionnelle ◽  
Grand Nombre ◽  
Il Y A

L'actuel régime juridique de représentation syndicale perçoit le syndicat primordialement comme un agent local de négociation collective et l'investit à cette fin d'un pouvoir de représentation exclusif d'une collectivité particulière de salariés. Privilégiant la représentation sur le plan de l'entreprise, il ne prend en considération la réalité syndicale que partiellement. La réalité de la représentation syndicale est en effet plus riche et plus variée. L'action syndicale s'exerce sur un grand nombre de plans à l'égard d'une variété d'objets. Le présent texte traite de la représentation syndicale au-delà de l'entreprise sous ses diverses formes et, plus particulièrement, de la participation des syndicats au sein de différentes instances étatiques au Québec. A partir d'une distinction entre la représentation du salarié en tant que salarié et du salarié en tant que citoyen, il veut d'abord établir généralement les différentes dimensions de la représentation syndicale au-delà de l'entreprise. Il s'attarde ensuite aux manifestations de cette représentation au Québec pour tenter d'en dégager les traits significatifs. Au Québec, l'appréhension du rôle des groupements syndicaux ne saurait être complète sans aller au-delà de l'entreprise. Dans ces sphères plus vastes, plusieurs d'entre eux exercent des actions ou, à tout le moins, une influence qui concernent aussi bien le salarié en tant que tel que le salarié-citoyen. Saisie globalement, la représentation syndicale est toutefois loin d'équivaloir à une intégration des mouvements syndicaux à la gouverne de l'État. Au Québec, sans doute peut-on aller jusqu'à parler d'une certaine « inclusion », dans la mesure où les groupements syndicaux sont appelés à participer, à titre consultatif, à diverses institutions à vocation particulière, sans pour autant avoir part à la détermination des orientations de l'État. Au fédéral, la reconnaissance étatique de la représentativité des groupements syndicaux paraît relativement marginale, surtout depuis l'abolition de certains grands organismes étatiques de consultation. En sens inverse, il y a toutefois lieu de tenir compte de l'émergence de nouveaux organismes dont la mission s'étend à certains aspects de la restructuration économique, particulièrement la formation professionnelle, et qui se caractérise par une forte participation syndicale. Lorsqu'il s'agit du salarié-citoyen, la représentation syndicale subit la concurrence de la part de divers autres groupements établis en fonction de nouvelles identités. La composition des organismes établis par la loi devient alors franchement multipartite. De surcroît, les critères de représentativité des groupements appelés à participer, dont ceux de nature syndicale, sont absents, ce qui affaiblit leur légitimité. D'importants courants d'opinion contemporains favorisent même la représentation directe et exclusive du citoyen-individu, par rapport à l'État, aux dépens de toute intermédiation fonctionnelle. Les acquis de la représentation syndicale, quoique perfectibles, témoignent cependant déjà de façon significative de la présence de divers intérêts collectifs dans la société québécoise, ainsi que de la vocation des groupements syndicaux à participer à leur expression.

Effects of rare arable plants on flower-visiting wild bees in agricultural fields

2022 ◽  
Vol 323 ◽  
pp. 107685
Author(s):  
Alina Twerski ◽  
Harald Albrecht ◽  
Jochen Fründ ◽  
Michaela Moosner ◽  
Christina Fischer
Keyword(s):  
Agricultural Fields ◽  
Wild Bees ◽  
Flower Visiting

Temporal patterns in the macrobenthic communities of the Hawkesbury estuary, New South Wales

1987 ◽  
Vol 38 (5) ◽  
pp. 607
Author(s):  
AR Jones
Keyword(s):  
Community Composition ◽  
Temporal Patterns ◽  
Single Species ◽  
Species Number ◽  
Community Patterns ◽  
Low Salinity ◽  
Number Of Species ◽  
South Wales ◽  
Physicochemical Factors ◽  
Number Of Individuals

Temporal patterns in number of species, number of individual animals and community composition of the soft-sediment zoobenthos of the Hawkesbury estuary are described and related to physicochemical factors. Replicate grabs were taken at 3-month intervals over 3 years (1977-1979) from sites located in three zones: the lower, middle and upper reaches. The number of species and number of individuals showed significant seasonal and annual differences in all zones. However, the pattern of these differences varied among sites and seasonal differences were not repeatable over years. Similarly, differences in community composition as revealed by classification were not seasonal. In the middle and lower reaches, these differences were apparently caused by the over- riding influence of non-seasonal climatic events, i.e. a major flood in 1978 and a drought throughout 1979. In the first two sampling following the flood, sample values for the numbers of both species and individuals were usually lowest and community composition was distinct from pre-flood and drought times. During the drought, the number of species was usually high and community composition relatively distinct. Whereas the number of species and community composition groupings were both significantly related to river discharge, the number of individuals was significantly correlated with temperature. All community variables were sometimes significantly related to salinity. The identity of numerically dominant species, as determined by Fager rankings, varied among times in both the lower and middle reaches. However, the polychaete Nephtys australiensis and the bivalve mollusc Notospisula trigonella were highest ranked overall in both zones. Community patterns in the low-salinity upper reaches differed from those further downstream by showing little change in numbers of species and community composition following the flood. Only the number of species was significantly correlated with any of the measured physicochemical variables, this being partly due to an influx of species during the drought. Furthermore, the upstream community was always dominated by the polychaete Ceratonereis limnetica and was thus the only community that could be characterised by a single species.

scholarly journals Comparing on site human and video counts at Igarapava fish ladder, south eastern Brazil

2006 ◽  
Vol 4 (2) ◽  
pp. 291-294 ◽  
Author(s):  
Mark D. Bowen ◽  
Simone Marques ◽  
Luiz G. M. Silva ◽  
Volney Vono ◽  
Hugo P. Godinho
Keyword(s):  
Fish Species ◽  
Accurate Method ◽  
Fish Passage ◽  
Southeastern Brazil ◽  
Human Observer ◽  
Full Spectrum ◽  
Prochilodus Lineatus ◽  
Number Of Species ◽  
Fish Ladder ◽  
Number Of Individuals

On site human observations and video images were collected and compared at the window of the Igarapava Dam fish ladder (IDFL), rio Grande , Southeastern Brazil, between March 1st and June 30th, 2004. We conducted four experiments with two humans (Observer 1 and Observer 2) observing fish passage in the IDFL window while a Sony 3CCD video camera (Observer 3) recorded fish passage at the same time. Experiments, each one hour in length, were distributed throughout the diel cycle using full spectrum lights. We identified fish species, the number of individuals for each species, and the real time that they passed. Counts from each human observer were compared to the video counts. The fish species most commonly observed in the window were - curimba (Prochilodus lineatus), mandi-amarelo (Pimelodus maculatus), piau-três-pintas (Leporinus friderici) and ferreirinha (Leporinus octofasciatus). The number of species and individuals were indistinguishable for the three observers. But, the number of species and individuals were significantly different among experiments. Thus, the three observers register the same number of species and count the same number of individuals even when these two response variables differ significantly among experiments. Based on these results, we concluded that the video count was an accurate method to assess fish passage at the IDFL.

scholarly journals Studies on the moss flora of the Bío-Bío region of Chile

2006 ◽  
Vol 28 (1) ◽  
pp. 63-77 ◽  
Author(s):  
Robert R. Ireland ◽  
Gilda Bellolio ◽  
Roberto Rodríguez ◽  
Juan Larraín
Keyword(s):  
South America ◽  
New Taxa ◽  
New Records ◽  
Recent Literature ◽  
Extensive Study ◽  
Central Chile ◽  
Number Of Species ◽  
South Central ◽  
Made In

An extensive study was made on the moss flora of the Bío-Bío Region (VIII Región) in south-central Chile in 2001-2003. Collections were made in all four provinces of the region: Arauco, Bío-Bío, Concepción and Ñuble. Approximately 265 localities in the region were explored with over 6,000 mosses collected in the four provinces. The mosses of this region had not previously been studied to any great extent and with part of the region’s environment being destroyed by the construction of several dams on one of the major rivers, the Bío-Bío, the study of this area seemed of utmost importance. Thus far, a total of 20 taxa were found which are new to Chile, making a total of 877 known for the country, with four new taxa known for South America. An additional 87 taxa are reported new only to the Bío-Bío Region. That number, together with some new records from the recent literature, increases the total for the Region from 190 to 300. It was determined from the 87 new taxa for the Bío-Bío Region that the majority (41) represent northern extensions of taxa, while a much smaller number (10) represent southern extensions. The remainder (36) fill in a gap in the distribution of the taxa between the northern and southern parts of the country. Many difficult species still remain to be identified and the number of species new to science, to Chile and to the Bío-Bío Region, is certain to increase when the remaining specimens are identified.

The Meyrick Types of Scopariinae (Lepidoptera: Pyralidae) in the British Museum (Natural History), Exclusive of Hawaiian Species

1960 ◽  
Vol 92 (12) ◽  
pp. 891-897
Author(s):  
Eugene Munroe
Keyword(s):  
Natural History ◽  
British Museum ◽  
Type Material ◽  
Number Of Species ◽  
Hawaiian Species ◽  
Lepidoptera Pyralidae ◽  
Made In

The purposes of this paper are: (1) to validate a considerable number of lectotype selections made in the course of a revisional study of the Scopariinae, and (2) to give, for the convenience of students, a list of Meyrick holotypes and lectotypes in the collection of the British Museum (Natural History), which now contains the types of all but five of the large number of species described by Meyrick in this group. The Hawaiian species have been omitted as volume 8 of Zimmerman's Insects of Hawaii gives full particulars of the type material of Hawaiian Scopariinae, including Zimmerman's lectotype selections.

Notes on the Life-history of Cheiloneurus noxius, Compere (Hym.)

1937 ◽  
Vol 28 (2) ◽  
pp. 181-183 ◽  
Author(s):  
Richard H. Le Pelley
Keyword(s):  
Life History ◽  
Southern California ◽  
World Wide ◽  
Wide Distribution ◽  
Economic Importance ◽  
Number Of Species ◽  
History Of ◽  
Made In

A number of species of this genus of Encyrtid parasites are known to be, and others are suspected to be, secondary parasites ; but apparently the complete life-history has not been observed in any one case. As the genus has an almost world-wide distribution and is doubtless of considerable economic importance, the following observations made in Southern California in part of 1935 and 1936 are recorded.

scholarly journals Species composition of climbers in seasonal semideciduous forest fragments of Southeastern Brazil

2009 ◽  
Vol 9 (4) ◽  
pp. 175-188 ◽  
Author(s):  
Karin dos Santos ◽  
Luiza Sumiko Kinoshita ◽  
Andréia Alves Rezende
Keyword(s):  
Floristic Composition ◽  
Southeastern Brazil ◽  
Forest Site ◽  
Forest Fragments ◽  
Semideciduous Forest ◽  
Number Of Species ◽  
Forest Sites ◽  
Forest Remnants ◽  
Mean Similarity ◽  
Made In

In this study we evaluated floristic composition patterns of communities of climbers within ten inventories carried out in semideciduous forest fragments of southeastern Brazil. One of the inventories is original, being carried out for the present study in Ribeirão Cachoeira forest, Campinas, São Paulo State, Southeastern Brazil. This inventory was then pooled together to other nine climbers' inventories made in other forests of Southeastern Brazil to form a data base, which was examined regarding species richness, similarity, species distribution and climbing methods. The total number of species obtained was 355, belonging to 145 genera and 43 families. The ten most diverse families Bignoniaceae (45 species), Fabaceae (42), Malpighiaceae (36), Asteraceae (31), Apocynaceae (29), Sapindaceae (28), Convolvulaceae (21), Cucurbitaceae (14), Passifloraceae (10), and Euphorbiaceae (8) contributed to 74.4% of the total number of species recorded. The commonest climbing method in the studied sites was main stem or branch twining, accounting for 178 species or 50.1% of the total, the second commonest was tendril climbing (121 species, 34.1%), and the least, scrambling (56 species, 15.8%). We found a high percentage of exclusive species i.e., those occurring in only one forest site, which accounted for 49.3% of the total recorded. The mean similarity among forest sites (30%) may be considered low. The climbing species contribution to the total wood plant richness recorded on the forests sites was very high in some of the sites (up to 52.5%). These results indicated the importance of climber communities to plant diversity for semideciduous forests in Southeastern Brazil, enhancing the regional diversity and the conservation value of these forest remnants.

scholarly journals Temporal Comparative Analysis of Industrial Symbiosis in a Business Network: Opportunities of Circular Economy

2020 ◽  
Vol 12 (5) ◽  
pp. 1832
Author(s):  
Fabiane Florencio de Souza ◽  
Mariane Bigarelli Ferreira ◽  
Adriana Valélia Saraceni ◽  
Leozenir Mendes Betim ◽  
Tafael Lucas Pereira ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Circular Economy ◽  
Positive Relationship ◽  
Organizational Factors ◽  
Significant Advance ◽  
Industrial Symbiosis ◽  
Southern Brazil ◽  
Business Network ◽  
Factors Influencing ◽  
Made In

The objective of this work is to perform a temporal comparative analysis in a network of companies in the furniture sector, in Santa Catarina, southern Brazil, presenting drivers through circular economy modeling. The study was performed applying the model proposed by Saraceni et al. (2017) in a network of Furniture companies in Concórdia, Brazil. The model diagnoses the presence of industrial symbiosis practices in five domains variables involving Technical, Economic, Political, Information and Organizational Factors, influencing three spheres: by-product exchange, service sharing, and managerial cooperation. The study addressed the positive relationship aspects of the circular economy as guidelines for improving the industrial symbiosis of the network. The results of data collection in 2019 were compared with the results of the application made in 2014. The comparison revealed a significant advance from 2014 to 2019 towards Industrial Symbiosis, highlighting that corrective actions and circular economy strategies may lead this business network to be the first Industrial Symbiosis case in Brazil in the next few years, meanwhile fostering the ecological network’s process to the country.

CHEVRON MAIN PASS BLOCK 41 OIL SPILL: CHEMICAL AND BIOLOGICAL INVESTIGATIONS

1975 ◽  
Vol 1975 (1) ◽  
pp. 555-566 ◽  
Author(s):  
Clayton D. McAuliffe ◽  
Alfred E. Smalley ◽  
Robert D. Groover ◽  
W. Marvin Welsh ◽  
W. Stewart Pickle ◽  
...  
Keyword(s):  
Mississippi River ◽  
Water Surface ◽  
River Delta ◽  
Mississippi River Delta ◽  
Benthic Organisms ◽  
Water Emulsion ◽  
Number Of Species ◽  
Extractable Organic Matter ◽  
Number Of Individuals ◽  
Spilled Oil

ABSTRACT During a three-week period in 1970 an estimated 65,000 barrels of 34° API gravity crude oil were discharged from the Chevron Main Pass Block 41C Platform, 11 miles east of the Mississippi River Delta. Two thousand barrels of chemical dispersants were sprayed on the platform and surrounding water surface. It is estimated that between 25–30% of the oil evaporated during the first 24 hours, 10–20% was recovered from the water surface, less than 1% dissolved, and less than 1% of the oil was identified in sediments within a 5-mile radius of the platform. The remaining oil emulsified and dispersed to undetectable levels, biodegraded, or photooxidized. The highest measured concentrations in water at the platform and at 1 mile were: oil-in-water emulsion, 70 to 1 ppm; dissolved hydrocarbons, 0.2 to 0.001 ppm; dispersant 1–3 to unmeasurable (<0.2ppm). Total extractable organic matter was highest in sediments near the Mississippi River Delta and in the inland bays. Spilled oil, identified in bottom sediments by gas chromatography, showed rapid weathering after 1 week to 1 month and at the end of 1 year was reduced to a few percent of the amount after the spill. Spilled oil was not found in the sediment below 1.5 inches. Over 550 species of benthic organisms were identified in 233 benthic samples. The number of species and number of individuals of benthic organisms showed low values in some samples near the platform. However, seasonal variations, bottom sediment type, and possibly other environmental parameters made it impossible to determine whether these locations had been affected by the spilled oil. There was no correlation of number of species, number of individuals, or other biological parameters with the hydrocarbon content of the sediments for samples from within a 10-mile radius of the platform. This lack of correlation suggests lack of significant effect of oil on benthic organisms. Extensive trawl samples showed no alteration in the annual life cycle of commercially important shrimp. Blue crabs were observed throughout the area, and the number of species of fish collected were comparable to a prior survey.

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