Avances en el Conocimiento de la Estratigrafía de la Mesopotamia Argentina, con Especial Referencia a la Provincia de Corrientes

Herbst, Rafael; Cruz, Jorge N. Santa; Zabert, Liliana L.

doi:10.14409/natura.v1i7.3292

Cited by 9 publications

(10 citation statements)

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“…Desde el punto de vista fitogeográfico los cerros pertenecen al Distrito del Ñandubay, dentro de la división biogeográfica de la Provincia del Espinal en el Dominio Chaqueño (Cabrera, 1971;Cabrera & Willink, 1980). Geológicamente, los afloramientos representan rocas de tipo arenisca cuarzosa pertenecientes a la formación estratigráfica Botucatú cuya edad data entre el Jurásico Superior y el Cretácico Inferior (Herbst & Santa Cruz, 1999;Aceñolaza, 2007). Estos cerros poseen una geomorfología de dunas con cumbres truncadas que forman una divisoria topográfica de orientación SE-NW, conformando una ladera norte y una ladera sur diferenciadas en sus unidades de paisaje.…”

Section: áRea De Estudiounclassified

Comunidades de aves de bosques y pastizales en los afloramientos rocosos aislados del Paraje Tres Cerros, Corrientes, Argentina

Fandiño¹,

Fernández

Thomann

et al. 2017

RBT

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Bird communities of forests and grasslands on isolated rocky outcrops in Paraje Tres Cerros, Corrientes, Argentina. Isolated rocky outcrops can act as patch habitats that host great biodiversity through the diversity of microhabitats, presence of restricted taxa and the high turnover of species in the patch matrix. The isolated rocky outcrops of Paraje Tres Cerros (ARPTC), Corrientes, Argentina, are a unique landscape in the region and biologically little explored. We conducted a study to describe for the first time the bird community of the forest and grassland of the ARPTC, using 136 lists following the ten species Mackinnon method from the breeding and non-breeding seasons. We evaluated the diversity, trophic guilds and phenology of the species, and compared attributes of grassland and forest communities. The total species richness was 107, with the forest being 1.3 times more diverse than the grassland. Completeness of inventories ranged from 83-90 % in the grassland and 88 to 99 % in the forest. The habitat complementarity was 62 %, indicating the presence of several species exclusive of forest and grassland habitats. The trophic structure of communities showed a good representation of insectivorous birds in both habitats. Frugivorous birds were more frequent in the forest and granivorous birds were more frequent in the grasslands. Due to the arrival of migrant species, both habitats had significantly higher richness in the breeding season than in the non-breeding season. Our results showed similar general aspects and patterns for bird communities and with specific studies for bird communities of rocky outcrops. The present study highlights the importance of the isolated rocky outcrops of Paraje Tres Cerros for the protection of local and regional bird biodiversity and represents a benchmark for the management and the protection of these ecosystems. Rev. Biol. Trop. 65 (2): 535-550. Epub 2017 June 01.

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Section: áRea De Estudiounclassified

Comunidades de aves de bosques y pastizales en los afloramientos rocosos aislados del Paraje Tres Cerros, Corrientes, Argentina

Fandiño¹,

Fernández

Thomann

et al. 2017

RBT

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“…This term was defined by De Alba (1953), accepted and subsequently used. However, it was Herbst (1971) and Herbst et al (1976) who characterized it lithologically, giving its vertical and horizontal extension, and who defined it as Formation.…”

Section: Stratigraphic and Sedimentological Setting Of The Fossil Floramentioning

confidence: 99%

Guadua zuloagae sp. nov., the First Petrified Bamboo Culm Record from the Ituzaingo Formation (Pliocene), Parana Basin, Argentina

Brea

Zucol

2007

Annals of Botany

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The new fossil bamboo culm constitutes the only fossil record, preserved as permineralized by silicification, in the world. This fossil record indicates that the genus Guadua was more widespread in the past than today. Discovery of G. zuloagae allows the presence of a Bambusoideae understorey in the mixed forests described for the Ituzaingó Formation to be inferred. The climatic conditions inferred from fossil bamboo and sedimentary deposits indicate a temperate-warm, humid climate.

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“…The Ituzaingó Formation was first defined by De Alba (1953) and formalized by Herbst (1971) and Herbst et al (1976). This formation has been interpreted as consisting of fluvial deposits (Herbst, 1971(Herbst, , 2000Iriondo & Rodríguez, 1973;Herbst et al, 1976;Iriondo, 1979Iriondo, , 1980Herbst & Santa Cruz, 1985;Jalfin, 1988;Anis et al, 2005;Iriondo & Kröhling, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…This formation has been interpreted as consisting of fluvial deposits (Herbst, 1971(Herbst, , 2000Iriondo & Rodríguez, 1973;Herbst et al, 1976;Iriondo, 1979Iriondo, , 1980Herbst & Santa Cruz, 1985;Jalfin, 1988;Anis et al, 2005;Iriondo & Kröhling, 2009). In 1846, D´Orbigny recognized these deposits as "Tertiare Guaranien" or "grès ferrugineux".…”

Section: Introductionmentioning

confidence: 99%

Microlobiusxylon paranaensis gen. et sp. nov. (Fabaceae, Mimosoideae) from the Pliocene-Pleistocene of Ituzaingó Formation, Paraná Basin, Argentina

Franco¹,

Brea²

2010

Rev. bras. paleontol.

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-A fossil wood with Fabaceae affinity from the Pliocene-Pleistocene sediments of Ituzaingó Formation is described. The silicified wood was collected at the Toma Vieja fossil locality, Paraná Basin, Argentina. The relationship and comparison with the nearest living relatives (NLRs) are discussed. Wood anatomical characters suggest an affinity with the genus Microlobius C. Presl. In South America, the genus Microlobius occurs in Brazil, Bolivia (Santa Cruz), Argentina (Chaco and Formosa) and Paraguay and is an important extant element of the Paraguay-Paraná system. The presence of this fossil in the Ituzaingó Formation supports the idea that the morphogenus Microlobiusxylon might have been an important component of seasonally dry tropical forests (SDTFs) during the Pliocene-Pleistocene. Today, this forest type has a relict distribution, occurring in isolated localities in the north of Argentina, southeast of Bolivia and Brazil, but in the past were more widespread to the east and south in South America. The presence of Microlobiusxylon paranaensis gen. et sp. nov. would indicate a temperate-warm climate during the Pliocene-Pleistocene.Key words: fossil wood, Fabaceae, Mimosoideae, Microlobiusxylon, Ituzaingó Formation, Argentina.RESUMO -É descrita uma madeira fóssil afim à família Fabaceae em sedimentitos plio-pleistocênicos da Formação Ituzaingó. A madeira silicificada foi coletada na localidade fossilífera Toma Vieja (Paraná, Argentina). O lenho fóssil foi comparado com seu parente atual mais próximo. Sua estrutura anatômica sugere afinidade com o gênero Microlobius C. Presl. Na América do Sul, o gênero Microlobius aparece no Brasil, Bolívia (Santa Cruz), Argentina (Chaco e Formosa) e Paraguai, e é um gênero importante do sistema Paraguai-Paraná. A presença deste fóssil na Formação Ituzaingó avaliza a ideia de que o morfogênero Microlobiusxylon foi um membro importante das florestas tropicais sazonais (SDTFs) durante o Plio-Pleistoceno. Estas florestas são relictos em localidades isoladas no norte da Argentina e no sudeste da Bolívia e do Brasil, mas no passado estendeu-se mais para o leste e o sul da América do Sul. Microlobiusxylon paranaensis gen. et sp. nov. sugere a vigência de um clima temperado-cálido ao longo do Plio-Pleistoceno.Palavras-chave: madeira fóssil, Fabaceae, Mimosoideae, Microlobiusxylon, Formação Ituzaingó, Argentina.

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Avances en el Conocimiento de la Estratigrafía de la Mesopotamia Argentina, con Especial Referencia a la Provincia de Corrientes

Cited by 9 publications

References 0 publications

Comunidades de aves de bosques y pastizales en los afloramientos rocosos aislados del Paraje Tres Cerros, Corrientes, Argentina

Comunidades de aves de bosques y pastizales en los afloramientos rocosos aislados del Paraje Tres Cerros, Corrientes, Argentina

Guadua zuloagae sp. nov., the First Petrified Bamboo Culm Record from the Ituzaingo Formation (Pliocene), Parana Basin, Argentina

Microlobiusxylon paranaensis gen. et sp. nov. (Fabaceae, Mimosoideae) from the Pliocene-Pleistocene of Ituzaingó Formation, Paraná Basin, Argentina

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