scholarly journals Dataset of occurrences and ecological traits of amphibians from Upper Paraguay River Basin, central South America

2020 ◽  
Vol 41 ◽  
pp. 71-89
Author(s):  
Matheus Oliveira Neves ◽  
Hugo Cabral ◽  
Mariana Pedrozo ◽  
Vanda Lucia Ferreira ◽  
Mário Ribeiro Moura ◽  
...  
Keyword(s):  
South America ◽  
River Basin ◽  
Breeding Strategy ◽  
Species Level ◽  
Species Occurrence ◽  
Amphibian Species ◽  
Biodiversity Knowledge ◽  
Paraguay River ◽  
Central South ◽  
Occurrence Records

There are many gaps in our biodiversity knowledge, especially in highly diverse regions such as the Neotropics. Basic information on species occurrence and traits are scattered throughout different literature sources, which makes it difficult to access data and ultimately delays advances in ecology, evolution, and conservation biology. We provide species occurrence and trait data for amphibian species in the Upper Paraguay River Basin, central South America. The compiled information is made available through two different datasets that hold (i) 17K species occurrence records and (ii) 30 species-level traits for 113 amphibian species. The first dataset includes the species occurrence records and informs specimen id, collection of housing, locality, geographical coordinates, geographic accuracy, collection date, and collector name. The second dataset covers species-level attributes on morphometry, diet, activity, habitat, and breeding strategy. These datasets improve accessibility to spatial and trait data for amphibian species in the Pantanal ecoregion, one of the largest wetlands on Earth.

scholarly journals The Early Triassic magmatism of the Alto Paraguay Province, Central South America: Paleomagnetic and ASM data

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Marcia Ernesto ◽  
Piero Comin-Chiaramonti ◽  
Celso de Barros Gomes
Keyword(s):  
South America ◽  
Lava Flows ◽  
Early Triassic ◽  
Paraguay River ◽  
Magnetic Components ◽  
Paleomagnetic Pole ◽  
Intrusive Rocks ◽  
Alkaline Complexes ◽  
Central South

AbstractA paleomagnetic studystudywork was carried out on the Alto Paraguay Province (APP), a belt of alkaline complexes that parallel the Paraguay river for more than 40 km at the border of Brazil and Paraguay. The province is well dated by 40Ar/39Ar method giving ages in the range 240–250 Ma with a preferred age of 241 Ma. Intrusive rocks are predominant but the stocks may be topped by lava flows and ignimbrites. Paleomagnetic work on stocks, dikes and flows of the APP identified normal and reversed magnetic components which are carried mainly by titanomagnetites. The calculated paleomagnetic pole located at 319ºE 78ºS (α

scholarly journals Impediments to Understanding Seagrasses’ Response to Global Change

2021 ◽  
Vol 8 ◽  
Author(s):  
Brianna M. Rock ◽  
Barnabas H. Daru
Keyword(s):  
Climate Change ◽  
Global Change ◽  
Computer Time ◽  
Species Level ◽  
Species Sensitivity ◽  
Species Occurrence ◽  
Computational Tools ◽  
Species Response ◽  
Evolutionary Distinctiveness ◽  
Occurrence Records

Uncertainties from sampling biases present challenges to ecologists and evolutionary biologists in understanding species sensitivity to anthropogenic climate change. Here, we synthesize possible impediments that can constrain research to assess present and future seagrass response from climate change. First, our knowledge of seagrass occurrence information is prevalent with biases, gaps and uncertainties that can influence inferences on species response to global change. Second, research on seagrass diversity has been focused on species-level metrics that can be measured with data from the present – but rarely accounting for the shared phylogenetic relationships and evolutionary distinctiveness of species despite species evolved and diversified from shared ancestors. Third, compared to the mass production of species occurrence records, computational tools that can analyze these datasets in a reasonable amount of time are almost non-existent or do not scale well in terms of computer time and memory. These impediments mean that scientists must work with incomplete information and often unrepresentative data to predict how seagrass diversity might change in the future. We discuss these shortfalls and provide a framework for overcoming the impediments and diminishing the knowledge gaps they generate.

scholarly journals Anurans of a threatened savanna area in western Brazil

2014 ◽  
Vol 14 (1) ◽  
Author(s):  
José Luiz Massao Moreira Sugai ◽  
Juliana de Souza Terra ◽  
Vanda Lúcia Ferreira
Keyword(s):  
South America ◽  
River Basin ◽  
Rainy Season ◽  
Conservation Priorities ◽  
Sampling Effort ◽  
Aquatic Habitats ◽  
Mato Grosso ◽  
Paraguay River ◽  
The World ◽  
Mato Grosso Do Sul

The Upper Paraguay River Basin is located in the center of South America and harbors one of the largest wetland in the world, known as Pantanal. This floodplain is surrounded by uplands, which presently have most of their area converted into pastures or monocultures, besides being poorly known scientifically. Also, most of these upland areas are considered conservation priorities. Here we present a list of anuran species from a savanna-like area (municipality of Camapuã, state of Mato Grosso do Sul, Brazil) inserted in the uplands surrounding the Pantanal floodplain, in the Upper Taquari River sub-basin, and evaluate the effectiveness of the sampling effort. Data were obtained through active searches in 22 plots in aquatic habitats, during the rainy season (from December 2009 to April 2010). We found 26 species, in four families. Although sampling effort was found to sufficiently represent the local anuran assemblage, future inventories in this region should ideally include samplings during the dry and early rainy seasons, and include both active and passive capturing methods.

scholarly journals Kinosternon scorpioides scorpioides Linnaeus, 1766: range extension and first records in the upper Paraguay River basin and Mato Grosso do Sul, Brazil

Check List ◽  
2015 ◽  
Vol 11 (3) ◽  
pp. 1631
Author(s):  
Walfrido Moraes Tomas ◽  
Rafael Morais Chiaravalotti ◽  
André Restel Camilo ◽  
Gabriel Oliveira de Freitas
Keyword(s):  
South America ◽  
River Basin ◽  
Species Distribution ◽  
New Records ◽  
Range Extension ◽  
Mato Grosso ◽  
Paraguay River ◽  
Disjunct Populations ◽  
Mud Turtle ◽  
Mato Grosso Do Sul

The Scorpion mud turtle (Kinosternon scorpioides) is the chelonian species with the largest distribution range in the Neotropics. The species is reportedly distributed as two disjunct populations in South America: the Amazonian and the Chacoan populations. We present new records of K. s. scorpioides which represent an expansion of the species distribution, with the first records for the Upper Paraguay River basin, the first records for the Mato Grosso do Sul state, Brazil, as well as an evidence that the two previously documented populations area not disjunct.

The conservation of migratory fishes in the second largest river basin of South America depends on the creation of new protected areas

2021 ◽  
Author(s):  
Dayani Bailly ◽  
Valéria Flavia Batista‐Silva ◽  
Fernanda A. Silva Cassemiro ◽  
Priscila Lemes ◽  
Weferson Junio Graça ◽  
...  
Keyword(s):  
South America ◽  
Protected Areas ◽  
River Basin ◽  
The Creation ◽  
Migratory Fishes

Taxonomy of Ctenomys (Rodentia: Ctenomyidae) in northwestern Patagonia, Argentina: the occurrence of the “mendocinus” lineage

Mammalia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mauro N. Tammone ◽  
Ulyses F.J. Pardiñas
Keyword(s):  
South America ◽  
Molecular Data ◽  
Species Level ◽  
Subterranean Rodents ◽  
Mammalian Fauna ◽  
Southern South America ◽  
Monte Desert ◽  
Desert Shrub ◽  
Northern Patagonia ◽  
Northern Portion

Abstract Subterranean rodents Ctenomys are iconic representatives of the mammalian fauna from southern South America. Based on molecular data, eight lineages have been identified within the genus, although species-level identifications and relationships are still debated. Until now, the “magellanicus” clade has been the only lineage mentioned from arid, extra-Andean portions of Patagonia. Here, we report the presence of a Ctenomys population from northern Patagonia that is unambiguously associated with the Central Argentinean “mendocinus” lineage. Most of the 160,000 km2 comprising the northern portion of Patagonia – an area consisting primarily of Monte Desert shrub-land – are inhabited by Ctenomys populations of unknown taxonomy.

The heat wave of October 2020 in central South America

2021 ◽  
Author(s):  
Jose A. Marengo ◽  
Tercio Ambrizzi ◽  
Naurinete Barreto ◽  
Ana Paula Cunha ◽  
Andrea M. Ramos ◽  
...  
Keyword(s):  
South America ◽  
Heat Wave ◽  
Central South

Fish fauna in low-order streams of the Piquiri River, Upper Paraná River basin, Brazil

2021 ◽  
Vol 21 (4) ◽  
Author(s):  
Mariele P. Camargo ◽  
Sandra C. Forneck ◽  
Fabrício M. Dutra ◽  
Leonardo B. Ribas ◽  
Almir M. Cunico
Keyword(s):  
South America ◽  
River Basin ◽  
Native Species ◽  
Fish Fauna ◽  
Neotropical Streams ◽  
The World ◽  
Upper Paraná River ◽  
Upper Paraná River Basin ◽  
Electric Fishing ◽  
Low Order

Abstract The South America ichthyofauna encompasses the highest diversity of the world, however is highly threatened by anthropogenic actions. The fish fauna of nine low-order streams, tributaries of the Piquiri River and impacted by aquaculture, agriculture and urbanization were sampled in the present study. Samplings were done quarterly from December 2017 to September 2018 at three sites in each stream, using a portable electric fishing device in 50-meter segments. A total of 14,507 individuals were collected, belonging to six orders, 20 families, 46 genera, and 70 species. The highest richness and abundance were found for the orders Characiformes and Siluriformes. In this study, nine species that had not been recorded were found, totaling 163 for the basin. In addition, 14 non-native species were captured. The presented list of species contributes to the existing database of ichthyofauna distribution in Neotropical streams, denoting that it is underestimated in the region, mainly in low-order tributaries. The present study reinforces the importance of inventories and monitoring in environments with high biodiversity and sensitive to anthropogenic actions.

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