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Tytuł:
First ? cimolodontan multituberculate mammal from South America
Autorzy:
Kielan-Jaworowska, Z
Ortiz-Jaureguizar, E.
Vieytes, C.
Pascual, R.
Goin, F.J.
Powiązania:
https://bibliotekanauki.pl/articles/20688.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Argentina
mammal
Cretaceous
Argentodites coloniensis
new species
new genus
La Colonia Formation
South America
Multituberculata
paleontology
Cimolodonta
Opis:
We describe a Cretaceous ?cimolodontan multituberculate p4 from South America, for which we erect the new genus and species Argentodites coloniensis. This new taxon is represented by an isolated ?left p4 from the Upper Cretaceous (?Campanian or Maastrichtian) La Colonia Formation of Patagonia (Fig. 1). It has a strongly convex anterior margin and prismatic enamel, which attest to its cimolodontan nature, while the previously known p4 (MACN−RN 975) from the Late Cretaceous Los Alamitos Formation is roughly rectangular, suggesting “plagiaulacidan” affinity. The presence of normal prismatic enamel in Argentodites suggests similarities to Ptilodontoidea. However, it differs from the Late Cretaceous and Paleocene Laurasian cimolodontans (including Ptilodontoidea) in having a long, straight posterior margin, a nearly straight dorsal margin, characteristic of some “Plagiaulacida”, and in having the lingual side close to the mirror image of the labial side, the character that poses difficulties in establishing whether it is a right or left tooth. Because of these differences we assign Argentodites to ?Cimolodonta, tentatively only, superfamily and family incertae sedis.
Źródło:
Acta Palaeontologica Polonica; 2007, 52, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Juncus bulbosus [Juncaceae] a species new to South America [Chile]
Autorzy:
Prockow, J
Powiązania:
https://bibliotekanauki.pl/articles/57906.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Juncus bulbosus
Juncaceae
new species
South America
locality
plant distribution
climate condition
taxonomy
Chile
bulbous plant
Opis:
The first localities of Juncus bulbosus (Juncaceae) for South America (Chile) and for the whole south-western part of the world (S latitude and E longitude) are described, including precise geographical location and climatic conditions. General remarks on the invasiveness of the species and on the possibility of finding it in other parts of the world are given. The distribution of the species world-wide requires further studies, since the bulbous rush has become an invasive plant in areas where it did not occur before.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 3; 225-227
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fishes as definitive or intermediate hosts of opisthorchioid trematodes in South America
Autorzy:
Ostrowski, de Nunez M
Powiązania:
https://bibliotekanauki.pl/articles/838642.pdf
Data publikacji:
1999
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
fish
opisthorchioid trematode
Opisthorchioidea
intermediate host
life cycle
trematode
South America
host
Źródło:
Annals of Parasitology; 1999, 45, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fishes as definitive or intermediate hosts of opisthorchioid trematodes in South America
Autorzy:
Ostrowski de Núñez, M.
Powiązania:
https://bibliotekanauki.pl/articles/2148834.pdf
Data publikacji:
1999
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
fish
opisthorchioid trematode
Opisthorchioidea
intermediate host
life cycle
trematode
South America
host
Źródło:
Wiadomości Parazytologiczne; 1999, 45, 3; 329-336
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Uruguay River: A Permeable Border in South America
The Uruguay River
Autorzy:
Nodari, Eunice
Gerhardt, Marcos
Powiązania:
https://bibliotekanauki.pl/articles/2076949.pdf
Data publikacji:
2021-09-30
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Biodiversity
forests
Uruguay River
parks
landscapes
South America
Opis:
The Uruguay River basin in South America has held a social, cultural, environmental, and economic relevance for many centuries. The river flows for about 2,000 km, linked to an important remnant of native forest, the Selva Misionera in Argentina, and to a Brazilian conservation unit for biodiversity, the Turvo State Park. The Uruguay River is fed by several other important rivers, forming a basin region in which thousands of people live and work. The history of the Uruguay River is intensively linked to the permeable borders between Brazil, Argentina, and Uruguay where different social groups circulated in diverse historical time periods. Forests along the river played a very important role with emphasis on the extraction and trade of yerba mate (Ilex paraguariensis, Saint-Hilaire), a forest product widely consumed in southern America, and also the timber extraction from native forests, during the nineteenth and twentieth centuries. As a result, a profound socio-environmental transformation took place with the reconstruction of regional landscapes shaped by the Uruguay River basin.
The Uruguay River basin in South America has held a social, cultural, environmental, and economic relevance for many centuries. The river flows for about 2,000 km, linked to an important remnant of native forest, the Selva Misionera in Argentina, and to a Brazilian conservation unit for biodiversity, the Turvo State Park. The Uruguay River is fed by several other important rivers, forming a basin region in which thousands of people live and work. The history of the Uruguay River is intensively linked to the permeable borders between Brazil, Argentina, and Uruguay where different social groups circulated in diverse historical time periods. Forests along the river played a very important role with emphasis on the extraction and trade of yerba mate (Ilex paraguariensis, Saint-Hilaire), a forest product widely consumed in southern America, and also the timber extraction from native forests, during the nineteenth and twentieth centuries. As a result, a profound socio-environmental transformation took place with the reconstruction of regional landscapes shaped by the Uruguay River basin
Źródło:
Review of International American Studies; 2021, 14, 1; 201-227
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Australasian muricid gastropod Lepsiella as Pleistocene visitor to southernmost South America
Autorzy:
Gordillo, S.
Nielsen, S.N.
Powiązania:
https://bibliotekanauki.pl/articles/22559.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Six shells belonging to a muricid gastropod species were recovered from a Pleistocene marine raised beach located on Navarino Island, in southern South America. None of the living species in the Beagle Channel or in the area is close, and none of the fossil species in the vicinity regions shows the diagnostic characters of the Navarino Pleistocene fossils. Our material resembles Lepsiella baileyana from southern Australia, although some differences in the suture and in the spire outline are recognized. Haustrinae were previously confined geographically to New Zealand and to the temperate coast of Australia, now extending its range of distribution to southern South America. This finding of Lepsiella ukika sp. nov. is best explained on the basis of transoceanic migration from Australasia by means of the Antarctic Circumpolar Current perhaps during a Quaternary glacial period. The presence of this Pleistocene visitor in southern South America is important because it clearly demonstrates that transcontinental traverse of taxa with direct (non−planktonic) development might have happened by rafting on kelp that served as transport platforms.
Źródło:
Acta Palaeontologica Polonica; 2013, 58, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ameryka Południowa w pozyskiwaniu cywilizacyjnej tożsamości
South America in Acquiring Civilizational Identity
Autorzy:
Kłosiński, Kazimierz A.
Powiązania:
https://bibliotekanauki.pl/articles/30145482.pdf
Data publikacji:
2014
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
Ameryka Południowa
cywilizacja
integracja gospodarcza
South America
civilization
economic integration
Opis:
Tekst przedstawia podstawowy proces (integrację) oraz główne gospodarki (Argentynę, Brazylię, Chile) Ameryki Południowej, źródła i siły współczesnej transformacji tego kontynentu ku własnej cywilizacyjnej tożsamości.
The text presents the basic process (integration) and major economies (Argentina, Brazil, Chile) of the South America, the source and the strength of the modern transformation of this continent towards own civilizational identity.
Źródło:
Roczniki Ekonomii i Zarządzania; 2014, 6, 2; 115-130
2081-1837
2544-5197
Pojawia się w:
Roczniki Ekonomii i Zarządzania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distinguishing Quaternary glyptodontine cingulates in South America: How informative are juvenile specimens?
Autorzy:
Luna, C.A.
Cerda, I.A.
Zurita, A.E.
Gonzalez, R.
Prieto, M.C.
Mothe, D.
Avila, L.S.
Powiązania:
https://bibliotekanauki.pl/articles/20747.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
The subfamily Glyptodontinae (Xenarthra, Cingulata) comprises one of the most frequently recorded glyptodontids in South America. Recently, the North American genus Glyptotherium was recorded in South America, in addition to the genus Glyptodon. It has been shown that both genera shared the same geographic distribution in central-north and eastern areas of South America (Venezuela and Brazil, respectively). Although some characters allow differentiation between adult specimens of both genera, the morphological distinction between these two genera is rather difficult in juvenile specimens. In this contribution, a detailed morphological, morphometric and histological survey of a juvenile specimen of Glyptodontinae recovered from the Late Pleistocene of northern Brazil is performed. The relative lower osteoderms thickness, the particular morphology of the annular and radial sulci and the distal osseous projections of the caudal osteoderms suggest that the specimen belongs to the genus Glyptotherium. In addition, the validity of some statistical tools to distinguish between different ontogenetic stages and in some cases between genera is verified. The osteoderm microstructure of this juvenile individual is characterized by being composed of a cancellous internal core surrounded by a compact bone cortex. Primary bone tissue mostly consists of highly vascularized, woven-fibered bone tissue. Unlike that observed in adult Glyptodontinae, both the Sharpey fibers and the fibrous and laminar parallel bone tissue as secondary bone are absent. This study enhances our knowledge about those morphological and histological changes that occur through the ontogeny in glyptodonts.
Źródło:
Acta Palaeontologica Polonica; 2018, 63, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First record of an extinct marabou stork in the Neogene of South America
Autorzy:
Noriega, J.I.
Cladera, G.
Powiązania:
https://bibliotekanauki.pl/articles/21259.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
first record
marabou stork
Neogene
South America
Leptoptilos patagonicus
Ciconiiformes
Ciconiidae
Leptoptilini
Late Miocene
Miocene
Puerto Madryn Formation
Chubut province
Argentina
wing bone
leg bone
Opis:
We describe a new large species of marabou stork, Leptoptilus patagonicus(Ciconiiformes, Ciconiidae, Leptoptilini), from the late Miocene Puerto Madryn Formation, Chubut Province, Argentina. The specimen consists mainly of wing and leg bones, pelvis, sternum, cervical vertebrae, and a few fragments of the skull. We provisionally adopt the traditional systematic scheme of ciconiid tribes. The specimen is referred to the Leptoptilini on the basis of similarities in morphology and intramembral proportions with the extant genera Ephippiorhynchus, Jabiru, and Leptoptilos. The fossil specimen resembles in overall morphology and size the species of Leptoptilos, but also exhibits several exclusive characters of the sternum, humerus, carpometacarpus, tibiotarsus, and pelvis. Additionally, its wing proportions differ from those of any living taxon, providing support to erect a new species. This is the first record of the tribe Leptoptilini in the Tertiary of South America.
Źródło:
Acta Palaeontologica Polonica; 2008, 53, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efekty dolaryzacji oficjalnej w Ameryce Południowej
The effects of official dollarization in South America
Autorzy:
Walerysiak, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/570056.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
official dollarization
monetary policy
economic development
Opis:
Official dollarization is a strategy for monetary and exchange rate policy, which means resignation from national currencies. It is a solution which can be used for different purposes, both offensive and defensive, as evidenced by the examples of Ecuador, El Salvador and Panama. The description of the meaning and effects of dollarization may be important both in the context of developing countries as well as in terms of the issue of global monetary order, an element of which is among others monetary integration in the form of the euro area. The official dollarization literature includes Berg and Borensztein’s work [2000] about the pros and cons of official dollarization, Chang and Velasco’s [2002] on the consequences of dollarization for prosperity, Barro’s [1999] which is the official dollarization recommendation for South America countries, Edwards’ [2002] and Edwards and Magendzo’s [2003] containing empirical testing of the effects of official dollarization for the economic growth. The description and assessment of the effects of monetary policy is an important issue which fits into a much larger current issues of global monetary order determining the significance of currencies of particular countries and currency areas and thus their economies in the international division of labor. Official dollarization and the entry to the euro zone despite their differences contain common elements, such as the abandonment of the exchange rate policy and the reduction of the importance of monetary policy, which confirms the usefulness of this study.
Źródło:
Ekonomia XXI Wieku; 2014, 1(1); 133-150
2353-8929
Pojawia się w:
Ekonomia XXI Wieku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Psammophaga fuegia sp. nov., a New Monothalamid Foraminifera from the Beagle Channel, South America
Autorzy:
Gschwend, Florian
Majda, Aneta
Majewski, Wojciech
Pawlowski, Jan
Powiązania:
https://bibliotekanauki.pl/articles/763595.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Foraminifera, Monothalamea, taxonomy, molecular phylogeny, eDNA
Opis:
Psammophaga fuegiais a new monothalamid foraminifera discovered in surface sediment samples in the Beagle Channel, South America. The species is a member of the important, globally distributed genus Psammophaga, which has the ability to ingest and store mineral particles inside the cytoplasm. Its shape is ovoid to pyriform, the size varies from 250 to 600 µm in length and from 200 to 400 µm in width. Like other Psammophaga species P. fuegia has a single aperture. It was found in multiple samples across the Beagle Channel area at water depths of 4 to 220 meters and in environments as variable as fjords, the main channel, and the harbour of Puerto Williams (Chile). The occurrences of the new species in environmental DNA and RNA samples correspond well to its distribution inferred from the microscopic study.
Źródło:
Acta Protozoologica; 2016, 55, 2
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From paradigm to paradox – contemporary mainstream theoretical reflections for fieldwork in lowland South America
Autorzy:
Bomfil Neto, Virgílio
Powiązania:
https://bibliotekanauki.pl/articles/694207.pdf
Data publikacji:
2019-12-30
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Opis:
This essay intends to address perspectives and reflections on nature and culture in the contemporary anthropological literature . Dialogically engaging with Ingold, Wag- ner, Viveiros de Castro, Descola and Strathern, I aim to demonstrate the implications of understanding culture as an axiomatic point of differentiation of human nature, or as re-elaboration of materiality through human action . This reflection calls us to rethink the Western scientific epistemology, along with its presupposed ontological order . Such questioning unfolds in the elaboration of the ethnographic text, which in turn is the result of a dialectical process that speaks not only of one culture, but of two, and especially of our gaze on the Other . In the ethnographic text, an anthropologist and a native are the potential locus of reproduction of their culture . Through this approach we extend the implications of epistemological concerns to fieldwork practices and to the art of under- standing other knowledge systems .
Źródło:
Etnografia. Praktyki, Teorie, Doświadczenia; 2019, 5; 209-222
2392-0971
2543-9537
Pojawia się w:
Etnografia. Praktyki, Teorie, Doświadczenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three Models of Presidential Impeachment in South America
Trzy modele impeachmentu prezydenta w Ameryce Południowej
Autorzy:
Fijałkowska-Myszyńska, Alicja
Lisińska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2197725.pdf
Data publikacji:
2023-04-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
Impeachment
South America
President
impeachment
Ameryka Południowa
prezydent
Opis:
This article systematises procedures for dismissing a Head of State in the countries of South America. We look at the genesis of introducing impeachment to the constitutions of countries in this part of the world, paying close attention to the specific historical background of the Western Hemisphere, then focusing on the categorization and systematisation of the procedure itself. We present three models of the presidential impeachment in South America: Judicial, Bicameral and Unicameral. Using a contextual approach, doctrinal research, comparative method and theory-building strategy, we discuss the general features of these models and the specificities of use in each country of the continent.
Niniejszy artykuł podejmuje temat procedury odwołania głowy państwa w krajach Ameryki Południowej. Autorki przyglądają się genezie wprowadzenia impeachmentu do konstytucji państw leżących w tej części świata, zwracając uwagę na szczególne uwarunkowania historyczne zachodniej półkuli, a następnie skupiają się na kategoryzacji i systematyzacji samej procedury. W oparciu o kryterium dotyczące tego jakie ciało wnosi oskarżenie a jakie odpowiada za proces i decyzję o ewentualnym pozbawieniu urzędu, autorki wyróżniają trzy modele impeachmentu prezydenta w Ameryce Południowej: sądowniczy, dwuizbowy oraz jednoizbowy. Wykorzystując podejście kontekstualne, metodę dogmatyczno-prawną, metodę porównawczą oraz strategię budowania teorii, autorki omawiają ogólne cechy każdego z modeli, jak również jego specyfikę w krajach kontynentu.
Źródło:
Przegląd Prawa Konstytucyjnego; 2023, 2(72); 287-296
2082-1212
Pojawia się w:
Przegląd Prawa Konstytucyjnego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isospora dendrocinclae n. sp. (Apicomplexa: Eimeriidae) from the Whitechinned Woodcreeper (Dendrocincla merula) from South America
Autorzy:
McQuistion, Thomas E.
Galewsky, Samuel
Capparella, Angelo P.
Rebling, Fredrick
Powiązania:
https://bibliotekanauki.pl/articles/763497.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Isospora dendrocinclae, Passeriformes, Dendrocolaptidae, phylogenetics, ribosomal RNA, molecular systematics
Opis:
A new species of Isospora is described from the fecal contents of the white-chinned woodcreeper, Dendrocincla merula merula from Guyana and Dendrocincla merula barletti from Peru. Sporulated oocysts are subspherical to ovoid, 19.2 × 16.5 (15–23 × 14.5–19) μm, with a smooth, colorless, bilayered wall. The average shape index is 1.2. No micropyle or oocyst residuum are present, but the oocysts contain one polar granule. Sporocysts are ovoid, 12.9 × 8.3 (12–14 × 7–10) μm, average shape index of 1.7 with a smooth, single layered wall and composed of a small, knoblike Stieda body and a slightly larger, bubble shaped substieda body. The two sporocysts each contain a compact residuum composed of coarse, non-uniform granules and four randomly arranged, vermiform sporozoites each with a terminal refractile body and a centrally located nucleus. DNA sequences representing ITS-1 and ITS-4 regions of the 5.8S rDNA gene from the two isolates were amplified and compared. In addition to the two isolates showing similar morphological characteristics, they also had identical nucleotide sequences for the ITS-1 and ITS-4 regions of the 5.8S ribosomal gene.
Źródło:
Acta Protozoologica; 2010, 49, 2
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isospora mimusi n. sp. (Apicomplexa: Eimeriidae) from the Tropical Mockingbird Mimus gilvus in South America
Autorzy:
Coelko, Cleide D.
Berto, Bruno P.
Neves, Daniel M.
de Oliveira, Vinícius M.
Flausino, Walter
Lopes, Carlos W. G.
Powiązania:
https://bibliotekanauki.pl/articles/763581.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Isospora mimusi, oocysts, coccidiosis, Passeriformes, Mimidae, illegal trade, CETAS, Seropédica, Brazil.eus
Opis:
This current study reports a new isosporoid (Apicomplexa: Eimeriidae) species parasitizing tropical mockingbirds Mimus gilvus recovered from illegal trade in Brazil. Isospora mimusi n. sp. oocysts are spherical to sub-spherical, 20.6 × 19.6 μm, with smooth, bilayered wall, ~1.2 μm. Micropyle, oocyst residuum and polar granule are absent. Sporocysts are ovoidal, 13.4 × 9.8 μm. Stieda and substieda bodies are present. Sporocyst residuum composed of diffuse granules of various sizes, sporozoites have one refractile body.
Źródło:
Acta Protozoologica; 2011, 50, 2
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
"Salary Ameryki Południowej" - sprawozdanie z wyprawy naukowej PSGS
"Salars of South America" - report of PSMA scientific expedition
Autorzy:
Urbańczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/183399.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
salary
Ameryka Południowa
geologia złóż
salars
South America
geology of deposits
Opis:
Wyprawa "Salary Ameryki Południowej" odbyła się w dniach 24.08-17.09.2011 roku. Salary to miejsca, w których można zobaczyć, jak współcześnie powstają złoża soli. Dla osób związanych z geologią soli i eksploatacją jej złóż są to obserwacje bezcenne. Wyprawa miała też, obok celu ściśle naukowego, aspekt turystyczny.
Źródło:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2011, 37, 2; 323-334
0138-0974
Pojawia się w:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Predation by drilling gastropods and asteroids upon mussels in rocky shallow shores of southernmost South America: Paleontological implications
Autorzy:
GORDILLO, SANDRA
ARCHUBY, FERNANDO
Powiązania:
https://bibliotekanauki.pl/articles/945760.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
predation
drilling gastropod
gastropod
Trophon geversianus
Xymenopsis muriciformis
Acanthina monodon
asteroid
Cosmasterias lurida
Anasterias antarctica
mussel
Mytilus chilensis
Brachidontes purpuratus
Aulacomya atra
rocky shore
shallow shore
South America
Bivalvia
Gastropoda
Asteroidea
prey selection
taphonomy
Tierra del Fuego
Argentina
Opis:
To achieve a better understanding of predation pattern recorded in the fossil record it is essential to study predator−prey interactions in the modern seas. It includes the data collected from the field observations as well as from the experiments in captivity. Such an approach allows recognition of the bioeroders, its description and also provides quantification of these interactions. This work offers a case study of the traces of predation resulting from the predator−prey interactions between three mussels: Mytilus chilensis, Brachidontes purpuratus, and Aulacomya atra; and their five natural enemies: the gastropods Trophon geversianus, Xymenopsis muriciformis, and Acanthina monodon, and the asteroids Cosmasterias lurida and Anasterias antarctica living along the intertidal and/or subtidal rocky shores in Tierra del Fuego. The predatory damage to mussel shells varies according to the predator and prey species and techniques for attacking prey are highly specialized. A. monodon drills a hole in B. purpuratus but uses the outer lip of its shell as a wedge to open the valves of M. chilensis and A. atra. T. geversianus always makes holes, but while it drills the valve walls of M. chilensis, it prefers to drill the valve edges of A. atra and B. purpuratus, with different characteristic patterns. Usually the shells of mussels killed by C. lurida do not suffer from any mechanical damage, but some other shells were crushed or fractured along the margins. Comparatively, time required to successfully attack a prey was shorter in C. lurida (24 hours), followed by A. monodon (36 hours), and longer in T. geversianus (9 to 10 days). Traces of predation are not randomly distributed across size classes of mussel prey, reflecting selectivity for a particular size class. Also, drill holes are usually placed at specific sectors of the shell, indicating site selectivity. These observations offer some paleontological implications for investigating the pattern of predation in fossil record. They show that different patterns of shell damage can be due to different predator species (e.g., wall vs. edge drillings), although the same predator species can leave different marks when consuming different prey (e.g., T. geversianus). Most disconcerting for paleontologists are cases of predation which do not leave any marks on the prey shell detectable in the fossil record (e.g., predation by asteroids), or leave ambiguous marks (A. monodon when preying with the spine). In conclusion, besides the opportunity to identify some traces of predation by drilling gastropods in fossil mussels, this work gives criteria to address predation in some particular paleontological cases that would otherwise be dismissed by researchers.
Źródło:
Acta Palaeontologica Polonica; 2012, 57, 3; 633-646
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sojusz Pacyfiku. Nowy biegun integracji gospodarczej w Ameryce Południowej
Pacific Alliance. A New Pole of Economic Integration in South America
Autorzy:
Piłka, Robert
Powiązania:
https://bibliotekanauki.pl/articles/509054.pdf
Data publikacji:
2017
Wydawca:
Akademia Finansów i Biznesu Vistula
Tematy:
integracja gospodarcza
instytucjonalizacja
Ameryka Południowa
Sojusz Pacyfiku
Mercosur
economic integration
institutionalisation
South America
Pacific Alliance
Opis:
Przedmiotem pracy jest analiza procesów integracji gospodarczej w Ameryce Południowej. Celem przeprowadzonych badań jest próba dokonania oceny, w jakim stopniu utworzenie ugrupowania Sojuszu Pacyfiku może wpłynąć na kształt procesów integracyjnych na tym kontynencie oraz stanowić alternatywę dla istniejących już ugrupowań, w szczególności największego ugrupowania integracyjnego w Ameryce Południowej, którym jest Wspólny Rynek Południa (Mercosur). W pracy przeprowadzono analizę porównawczą modelu integracji oraz polityki gospodarczej państw tworzących Sojusz Pacyfiku oraz Mercosur, a także analizę danych jakościowych i ilościowych w stosunku do wskaźników ekonomicznych badanych państw. Na bazie przeprowadzonej analizy, wykazane zostały zależności między polityką gospodarczą oraz poziomem rozwoju gospodarczego analizowanych państw, ocen w zakresie konkurencyjności gospodarek oraz stanu wolności gospodarczej. Przeprowadzone badania wykazały, że wspólną cechą polityki gospodarczej państw Sojuszu Pacyfiku jest stosunkowo duże, w porównaniu z innymi państwami regionu, otwarcie na zewnętrzną konkurencję oraz instytucjonalizacja współpracy gospodarczej z państwami wysoko rozwiniętymi. Badania wykazały ponadto, że zastosowana przez te państwa polityka gospodarcza oraz otwarty model integracji gospodarczej miały pozytywny wpływ na ich rozwój gospodarczy, wysokość wymiany handlowej oraz poziom napływu inwestycji zagranicznych.
The subject matter of the study is an analysis of the processes of economic integration in South America. The aim of the carried out research is an attempt to assess to what degree the setting up the Pacific Alliance formation may affect the shape of the integration processes on this continent and be an alternative for the already existing formations, particularly the biggest integration bloc in South America, i.e. the Southern Common Market (Mercosur). In his study, the author carried out a comparative analysis of the model of integration and the economic policy of the states forming the Pacific Alliance and Mercosur, as well as an analysis of quantitative and qualitative data related to the economic indicators of the states in question. Based on the carried out analysis, the author pointed out to the relationships between the economic policy and the level of economic development of the states being analysed, evaluations related to competitiveness of economies and the condition of economic freedom. The carried out research have demonstrated that the common feature of the economic policy of the Pacific Alliance member states is a relatively large, compared to other states of the region, openness to external competition and institutionalisation of economic cooperation with economically advanced states. The research also have shown that the economic policy applied by these states and the open model of economic integration have had a positive impact on their economic development, volume of trade, and the level of foreign investment inflow.
Źródło:
Zeszyty Naukowe Uczelni Vistula; 2017, 55(4) Ekonomia XIV; 163-175
2353-2688
Pojawia się w:
Zeszyty Naukowe Uczelni Vistula
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Interatheriinae notoungulates from the middle Miocene Collon Cura Formation in Argentina
Autorzy:
VERA, BÁRBARA
REGUERO, MARCELO
GONZÁLEZ-RUIZ, LAUREANO
Powiązania:
https://bibliotekanauki.pl/articles/945958.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
mammalia
notoungulata
interatheriidae
neogene
south america
patagonia
argentina
Opis:
he Interatheriinae (Notoungulata, Interatheriidae) from the Collón Curá Formation (Colloncuran South American Land Mammal Age, SALMA) are revised here, based on old and new collections from western Neuquén, Río Negro, and Chubut provinces where this geologic unit crops out. After a detailed study of the holotype of Icochilus endiadys, we conclude that its cranial and dental morphology are diagnostic of the genus Protypotherium, and as a result we include I. endiadys in this genus (P. endiadys comb. nov.). Deciduous dentition and postcranial remains are also ascribed to P. endiadys, which allows us to determine its pattern of dental eruption and describe part of its limbs, expanding its diagnosis. In addition, we describe a new species of Protypotherium, P. colloncurensis sp. nov., which differs from P. endiadys in having larger size, a more robust mandible, strongly imbricate upper molars, a well-developed parastyle on P1, a subcircular and non-overlapping p1, a much reduced p2, and a smaller talonid on p3–4. Based on the revision, we identified only one genus of Interatheriinae in the Collón Curá Formation (i.e., Protypotherium). Protypotherium endiadys extends its distribution from Neuquén to Chubut provinces, including Río Negro; the new species, in turn, was only recognized in Río Negro Province, appearing together with P. endiadys in Estancia El Criado, Comallo, and Chico River localities. Discriminant and cladistic analyses were performed including P. endiadys, the new taxon, and other middle Miocene interatheres, and yielded strong support for our systematic conclusions. A thorough phylogenetic analysis of Protypotherium is provided for the first time. Based on this analysis, Protypotherium and Miocochilius form a monophyletic group supported by four synapomorphies.
Źródło:
Acta Palaeontologica Polonica; 2017, 62, 4; 845-863
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative bone microstructure of three archosauromorphs from the Carnian, Late Triassic Chanares Formation of Argentina
Autorzy:
Marsa, J.A.G.
Agnolin, F.L.
Novas, F.E.
Powiązania:
https://bibliotekanauki.pl/articles/2082158.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Archosauromorpha
Lagerpeton
Tropidosuchus
paleobiology
paleohistology
Mesozoic
South America
Opis:
The Chañares Formation exhibits one of the most important archosauriform records of early Carnian ecosystems. Here we present new data on the palaeohistology of Chañares archosauriforms and provide new insights into their paleobiology, as well as possible phylogenetically informative traits. Bone microstructure of Lagerpeton chanarensis and Tropidosuchus romeri is dominated by fibro-lamellar tissue and dense vascularization. On the other hand, Chanaresuchus bonapartei is more densely vascularized, but with cyclical growth characterized by alternate fibro-lamellar, parallel-fibered and lamellar-zonal tissues. Dense vascularization and fibro-lamellar tissue imply fast growth and high metabolic rates for all these taxa. These histological traits may be tentatively interpreted as a possible adaptative advantage in front of Chañares Formation environmental conditions.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 2; 387-398
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early steps in the radiation of notoungulate mammals in southern South America: A new henricosborniid from the Eocene of Patagonia
Autorzy:
Bauza, N.
Gelfo, J.N.
Lopez, G.M.
Powiązania:
https://bibliotekanauki.pl/articles/22004.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Here we describe a new notoungulate mammal from the early Eocene (Itaboraian SALMA) of Chubut, Argentinian Patagonia, from the localities of Las Flores and Las Violetas Farm, represented by fragments of maxilla and isolated teeth. The specimens were found in the Las Flores Formation, Río Chico Group, and assigned to the Henricosborniidae, a primitive family within the order Notoungulata. Orome deepi gen. et. sp. nov. differs from other henricosborniids in a less developed metacone column in the upper molars, a larger metaloph in the third upper molar and a larger mean size. The morphometric analysis does not show any difference between the individuals of the two studied localities. The new addition to the henricosborniid diversity in Patagonia allows to provide a better understanding of the early radiation of notoungulates in South America.
Źródło:
Acta Palaeontologica Polonica; 2019, 64, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remote sensing techniques for tracking changes caused by illegal gold mining in Madre de Dios, Peru
Autorzy:
Adamek, Katarzyna
Lupa, Michał
Zawadzki, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/1955015.pdf
Data publikacji:
2021-12-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
environmental monitoring
geospatial analysis
South America
remote sensing
Peru
Opis:
Illegal extraction of gold has grown to be a problem in many countries, causing the degradation of the environment. The main purpose of this paper is to investigate changes in tree cover and surface pollution. The development of a mine site has been observed and analysed with images acquired from Landsat and the Sentinel missions. The results of the study showed changes in the state of the environment, strongly suggesting the possibility of ongoing pyrite weathering processes and the transportation of clay materials down watercourses, which can cause not only the further deterioration of the environment but also slow down the natural regeneration of the forest. In addition, research has found disturbing changes in vegetation, showing a loss of tree cover in the Amazon Rainforest as high as 17%. The validity of using remote sensing methods to observe the development of individual mining sites and their characteristics was confirmed.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2021, 25, 4; 205-212
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Triassic eucynodont Candelariodon barberenai revisited and the early diversity of stem prozostrodontians
Autorzy:
MARTINELLI, AGUSTÍN G.
BENTO SOARES, MARINA
DE OLIVEIRA, TÉO VEIGA
RODRIGUES, PABLO G.
SCHULTZ, CESAR L.
Powiązania:
https://bibliotekanauki.pl/articles/945630.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
cynodontia
probainognathia
prozostrodontia
dinodontosaurus assemblage zone
south america
brazi
Opis:
The dental anatomy of Candelariodon barberenai from the Dino donto saurus Assemblage Zone (Pinheiros-Chiniquá Sequence, Santa Maria Supersequence, late Ladinian–early Carnian) of south Brazil, is redescribed. Candelariodon was originally classified as Eucynodontia incertae sedis and our analysis recovered this taxon deeply nested within Probainognathia, as the sister taxon of Potheriodon plus Prozostrodontia. The lower postcanine dentition of Candelariodon has several apomorphies shared with Prozostrodon, Santacruzgnathus, Brasilodon/Brasilitherium, and some basal mammaliaforms (Morganucodon, Megazostrodon), such as a lingual cingulum with discrete cusps e and g and two distinct morphologies in the tooth row. The reinterpretation of Candelariodon as a probainognatian cynodont more derived than Probainognathus and the rich Brazilian fossil record document an important adaptive radiation of non-mammaliaform prozostrodontians and closely related forms prior to the origin of the mammaliaform clade.
Źródło:
Acta Palaeontologica Polonica; 2017, 62, 3; 527-542
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recurrent volcanic activity recorded in araucarian wood from the Lower Cretaceous Springhill Formation, Patagonia, Argentina: Palaeoenvironmental interpretations
Autorzy:
Del Fueyo, G.M.
Carrizo, M.A.
Poire, D.G.
Lafuente Diaz, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/2082290.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Araucariaceae
Agathoxylon
volcanic eruptions
wood
Berriasian
Valanginian
South America
Opis:
This paper describes a petrified trunk collected from a conglomerate bed of the Springhill Formation (Berriasian– Valanginian) in the Estancia El Álamo locality, Santa Cruz Province, Argentina. The fossil trunk is classified within the ubiquitous genus Agathoxylon and the wood anatomy shows a close affinity to that of Araucariaceae. This Patagonian wood has a distinct combination of anatomical characteristics unique among all known species from the Jurassic and Cretaceous of Western Gondwana allowing to diagnose a new fossil taxon Agathoxylon mendezii sp. nov. Sedimentological and megafloristic proxies of the Springhill Formation suggest that Agathoxylon mendezii sp. nov. grew under a warm and wet climate, which indicates a subtropical to temperate palaeoenvironment. However, the large number of frost rings in the earlywood of this araucarian tree suggests that the palaeoenvironment at Estancia El Álamo was subjected to recurrent disturbances, most likely caused by regional continuous volcanic activity originating from volcanoes located far away to the west. This activity would have produced periodic stratospheric veils that promoted rapid decreases in surface air temperature; the wood response to such stressful conditions would have been the formation of numerous (at least five) frost rings. Although recurrent eruptions in Patagonia during the Early Cretaceous are well recorded, this study is the first to register eruptions recorded in a coniferous wood.
Źródło:
Acta Palaeontologica Polonica; 2021, 66, 1; 231-253
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inflacja i stopy procentowe w krajach ameryki południowej – konwergencja czy odrębność
Inflation and interest rates in south america countries – convergence or distinctness
Autorzy:
Tomczak, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/591552.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Ameryka południowa
Inflacja
Integracja gospodarcza
Polityka pieniężna
Economic integration
Inflation
Monetary policy
South America
Opis:
Kraje Ameryki Południowej przeszły w ostatniej dekadzie XX w. proces dezinflacji i budowy zaufania do własnych walut. Większość z nich przyjęła strategię celu inflacyjnego. Gospodarka kontynentu jest włączona w procesy globalizacji przez eksport surowców i żywności, a także przepływy kapitału, co sprawia, że poziomy inflacji i stóp procentowych są determinowane nie tylko przez czynniki wewnętrzne. Celem badania jest uzyskanie odpowiedzi na pytanie, czy decyzje dotyczące stóp procentowych w politykach monetarnych krajów Ameryki Południowej są powiązane z polityką pieniężną kluczowych gospodarek spoza regionu, jak również, czy daje się zauważyć ich wspólny trend w ramach kontynentu.
During the last decade of the 20th century South America countries underwent the process of disinflation and reestablishment of confidence in their own currencies. Most of them adopted the strategy of inflation target. The economy of the continent is involved in the globalization processes through export of raw materials and food, as well as through capital flows what determines the fact that the inflation and interest rates are shaped not only by the internal factors. The purpose of the research is to answer the question whether the decisions concerning the interest rates in the monetary policies of the South America countries are connected with the monetary policy of key economies from outside of the region and also if it is possible to observe a common trend within the continent.
Źródło:
Studia Ekonomiczne; 2016, 266; 223-234
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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