Potential effects of warming on the trophic structure of shallow lakes in South America: a comparative analysis of subtropical and tropical systems

Hydrobiologia ◽  
2021 ◽  
Author(s):  
José Luiz Attayde ◽  
Rosemberg F. Menezes ◽  
Sarian Kosten ◽  
Gissell Lacerot ◽  
Erik Jeppesen ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
South America ◽  
Shallow Lakes ◽  
Trophic Structure ◽  
Tropical Systems

Synchrony and diachrony of postverbal negation in Jodï-Sáliban

2021 ◽  
Author(s):  
Jorge Emilio Rosés Labrada
Keyword(s):  
Comparative Analysis ◽  
South America ◽  
Language Family ◽  
Depth Analysis ◽  
The Family ◽  
Comparative Treatment

Abstract This article proposes a detailed comparative treatment of negation in the Jodï-Sáliban language family (Venezuela-Colombia, Northwest Amazonia, South America), which consists of four languages: Jodï [yau], Sáliba [slc], Piaroa [pid] and Mako [wpc]. This comparative analysis of negation strategies across the four languages in the family not only offers an overview of negation strategies in this language family but also allows for conclusions to be drawn on the cognacy of the different constructions and markers as well as on the sources of the main negation strategies. Specifically, I show that, even though certain markers are not cognate, negation in these languages has – as far back as the documentation goes – always been postverbal and suggest that postverbal negation can be diachronically stable. This research thus offers an in-depth analysis of negation in Jodï-Sáliban, a language family that remains underdescribed, and, crucially, contributes to our understanding of postverbal negation and its sources.

scholarly journals Consequences of Fish Kills for Long-Term Trophic Structure in Shallow Lakes: Implications for Theory and Restoration

Ecosystems ◽  
2016 ◽  
Vol 19 (7) ◽  
pp. 1289-1309 ◽  
Author(s):  
Carl D. Sayer ◽  
Thomas A. Davidson ◽  
Ruth Rawcliffe ◽  
Peter G. Langdon ◽  
Peter R. Leavitt ◽  
...  
Keyword(s):  
Shallow Lakes ◽  
Trophic Structure ◽  
Fish Kills

Comparative analysis of spores of Alsophila (Cyatheaceae) species from southern South America

2009 ◽  
Vol 156 (1-2) ◽  
pp. 165-176 ◽  
Author(s):  
Gonzalo J. Marquez ◽  
Marta A. Morbelli ◽  
Gabriela E. Giudice
Keyword(s):  
Comparative Analysis ◽  
South America ◽  
Southern South America

scholarly journals COMPARATIVE ANALYSIS OF VAT REFUNDS SYSTEMS TO FOREIGN TOURISTS IN ARGENTINA, COLOMBIA, ECUADOR, AND URUGUAY. THE CASE OF THE TAX-FREE SHOPPING

2020 ◽  
Author(s):  
Shirley Consuelo Honajzrová Banús ◽  
Keyword(s):  
Comparative Analysis ◽  
South America ◽  
Value Added ◽  
The State ◽  
Primary Reason ◽  
Value Added Tax ◽  
Private Companies ◽  
Tourism Sector ◽  
Practical Analysis ◽  
Competitiveness Index

The presented contribution focuses on describing the Value Added Tax refund to foreign tourists, specifically the Tax-Free Shopping incentive, that increases tourists’ propensity to buy retail goods where shopping can even sometimes be the primary reason for traveling. To have a practical analysis and comparison, four economies from South America were chosen. Colombia and Ecuador whose tax-refund system is entirely operated by the State and Argentina and Uruguay whose governments have decided to outsource their VAT refund service to tourists having private companies operate them. Adding to this, an evaluation of the main characteristics of these countries regarding the competitiveness of their tourism sector was gathered with data obtained from the Travel & Tourism Competitiveness Index (TTCI) Report (2019). The findings of this research provide a benchmark to tourism policymakers interested in assessing changes overtime on this type of incentive.

New records of Neogene Xenarthra (Mammalia) from eastern Puna (Argentina): diversity and biochronology

2019 ◽  
Vol 93 (06) ◽  
pp. 1258-1275
Author(s):  
Sofía I. Quiñones ◽  
Ángel R. Miño-Boilini ◽  
Alfredo E. Zurita ◽  
Silvina A. Contreras ◽  
Carlos A. Luna ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
South America ◽  
Late Miocene ◽  
New Records ◽  
The Other ◽  
South American ◽  
Sister Clade ◽  
Cenozoic Era ◽  
Climatic Optimum ◽  
High Diversity

AbstractXenarthra is an endemic South American lineage of mammals, probably the sister clade of the other placental mammals. The oldest records of Xenarthra are from the latest Paleocene, although its current diversity is much lower than that recorded in some intervals of the Cenozoic Era. A new Neogene Xenarthra (Pilosa and Cingulata) assemblage from two localities of the Argentine Eastern Puna (Calahoyo and Casira) is described. The newly recorded taxa—Cingulata, Dasypodidae, Eutatini: Stenotatus sp. indet. and Eutatini indet., Euphractini: Macrochorobates scalabrinii (Moreno and Mercerat, 1891), and Tardigrada, Mylodontinae: cf. Simomylodon sp. indet. and Simomylodon cf. S. uccasamamensis Saint-André et al., 2010—and those already published from Calahoyo—Cingulata: Macrochorobates chapadmalensis (Ameghino, 1908), Eosclerocalyptus sp. indet., and Tardigrada, Megatheriidae: Pyramiodontherium bergi (Moreno and Mercerat, 1891)—suggest a middle–late Miocene age for the fossil-bearing levels. In Calahoyo, the presence of Stenotatus sp. indet., in addition to some rodents currently under study in the lower levels, suggest a closer similarity with the palaeofauna of Cerdas (southern Bolivia), probably involving the last part of the Miocene Climatic Optimum. The Xenarthra recorded in the middle and upper levels of Calahoyo and Casira suggest a late Miocene–Pliocene age. A comparative analysis between Calahoyo and Casira highlights the absence of Cingulata in the latter and a high diversity in the former. This situation probably indicates different paleoenvironmental conditions. Finally, we present the first certain record of the genus Simomylodon Saint-André et al., 2010 in Argentina, which includes the oldest record of dermal ossicles for sloths in South America.

Comparative analysis of vocalizations of guans (Galliformes, Cracidae, Penelope) from Brazil (South America)

Gaia Scientia ◽  
2016 ◽  
Vol 10 (4) ◽  
pp. 173-181
Author(s):  
Dimitri de Araujo Costa ◽  
Martin Lindsey Christoffersen
Keyword(s):  
Comparative Analysis ◽  
South America ◽  
Red Sea ◽  
Global Distribution ◽  
Posterior Region ◽  
Type Material ◽  
Nominal Species ◽  
Diagnostic Characters ◽  
The World ◽  
Soft Bottoms

The genus Hesione includes many nominal species throughout the world, of which the first described was the species Hesione splendida, from the Red Sea. Subsequently, during the last eighty years, some polychaetes researchers have been proposed many synonyms for this taxon. We revised all synonyms of H. splendida based on type material, Brazilian specimens and original descriptions. We confirmed the synonyms established for researchers and we are proposing that the species H. ehlersi syn. n. and H. steenstrupii syn. n. are synonyms of H. splendida. We are also providing the current global distribution for this hesionid polychaete. H. splendida groups several nominal species that exhibit few morphological and color polymorphisms. The main diagnostic characters are the color of dorsum (transversal narrow ivory colored lines, and median circular white-yellowish patches); absence of palps; two papilliform lateral antennae; and a tubercle on the middle-posterior region of proboscis. The species H. splendida inhabits hard and soft bottoms, in intertidal and infralittoral zones, in Africa, America, Asia and Europe.

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