science

Paraná flooded savanna

Paraná flooded savanna is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Paraná flooded savanna rather than just read about it. In short: The Paraná flooded savanna (NT0908) is an ecoregion that borders the southern Paraná River in Argentina. It has largely been converted to agriculture or occupied by urban development, but scattered patches of the original habitat remain along the river.

Key takeaways

Paraná flooded savanna belongs to science; place it in that map before memorising details.
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Reproduce the core statement of Paraná flooded savanna from memory before moving on to harder problems.

Reference excerpt

The Paraná flooded savanna (NT0908) is an ecoregion that borders the southern Paraná River in Argentina. It has largely been converted to agriculture or occupied by urban development, but scattered patches of the original habitat remain along the river.

Location The Paraná flooded savanna ecoregion has an area of 3,885,000 hectares (9,600,000 acres). It extends along the Paraná River valley from Resistencia, Chaco, south to Buenos Aires. It includes the middle and lower Paraná floodplains, and those of the Paraguay River, a major tributary of the Paraná. In the south it includes the Paraná delta and the basin of the Río de la Plata. The ecoregion consists of a strip of land that runs through the Humid Chaco ecoregion in the north. Further south it runs through the Espinal ecoregion and then the Humid Pampas ecoregion before reaching the Río de la Plata estuary.

Physical

The region contains wide coastal lowlands, and low islands subject to flooding between the channels of the rivers. The large bodies of water give high humidity and temper the daily and seasonal temperature extremes. The Köppen climate classification is "Cfa": warm temperate, fully humid, hot summer. At a sample location at coordinates 31.25°S 59.75°W / -31.25; -59.75 average annual temperature is 19 °C (66 °F). It is coolest in July with a mean temperature of 12.4 °C (54.3 °F) and warmest in January with a mean temperature of 25.4 °C (77.7 °F). Total rainfall averages about 1,100 millimetres (43 in). Monthly rainfall ranges from 30.1 millimetres (1.19 in) in July to 137.4 millimetres (5.41 in) in March.

Ecology The Paraná flooded savanna is in the Neotropical realm and in the flooded grasslands and savannas biome. At one time it was one of the largest areas of wetland and riverine habitat in South America.

Flora Vegetation is characteristic of the Argentina's northeastern humid subtropical regions. It includes narrow strips of forest and shrub on land emerging from the water, scrub and pasture on islands, hydrophilic and aquatic flora on the river banks and in the channels, and lagoons within the islands. Tree species include Salíx humboldtiana, Tessaria integrifolia and Erythrina crista-galli. Water plants include species of the Eichhornia and Paederia genera, Victoria cruziana, Cyperus giganteus, Typha latifolia, Typha domingensis and Pontederia lanceolata.

Fauna This ecoregion has considerable biodiversity. Mammals include agile gracile opossum (Gracilinanus agilis), coypu (Myocastor coypus) and Argentine swamp rat (Scapteromys aquaticus). Reptiles include the leopard keelback (Helicops leopardinus) and common green racer (Philodryas aestiva) snakes, Hilaire’s toadhead turtle (Phrynops hilarii) and Argentine snake-necked turtle (Hydromedusa tectifera). The Venezuela snouted treefrog (Scinax x-signatus) is present. Rare, endemic or endangered species include polka-dot tree frog (Hypsiboas punctatus), marsh deer (Blastocerus dichotomus), neotropical otter (Lontra longicaudis) and capybara (Hydrochoerus hydrochaeris). Endangered amphibians include blunt-headed salamander (Ambystoma amblycephalum) and red-spotted Argentina frog (Argenteohyla siemersi). Birds include biguá (Phalacrocórax olivaceus), rufescent tiger heron (Tigrisoma lineatum), striped owl (Pseudoscops clamator), green kingfisher (Chloroceryle americana), great black hawk (Buteogallus urubitinga), roadside hawk (Rupornis magnirostris), dusky-legged guan (Penelope obscura), checkered woodpecker (Veniliornis mixtus), greater thornbird (Phacellodomus ruber), rufous-bellied thrush (Turdus rufiventris) and straight-billed reedhaunter (Limnoctites rectirostris). Endangered birds include yellow cardinal (Gubernatrix cristata), Chaco eagle (Buteogallus coronatus) and Eskimo curlew (Numenius borealis). There are more than 300 species of fish, mostly Characiformes and catfish. Species of fish that attract tourists for sports fishing include spotted sorubim (Pseudoplatystoma corruscans), barred sorubim (Pseudoplatystoma fasciatum), paulicea Amazon catfish (Paulicea lutkeni), dorado (Salminus brasiliensis) and pirapitá (Brycon orbiginianus). Other economically valuable species include the streaked prochilod (Prochilodus lineatus) fish; pearly clams for ornaments; and the coypu, neotropical otter, capybara, caiman species and gold tegu (Tupinambis teguixi) for their skins and hides, and to a lesser extent their meat.

Status The World Wildlife Fund gives the ecoregion the status of "Critical/Endangered". The Paraná flooded savanna is now heavily populated and has mostly been converted to farmland or urban areas. There are scattered areas of the original habitat along the edge of the river in inaccessible area. Protected areas include the Cayastá Provincial Reserve, Del Medio-Los Caballos Provincial Reserve, Colonia Benitez Strict Natural Reserve and Vire-Pitá Provincial Reserve. The main threat comes from dams and levees. Urban growth, pollution and illegal commercial hunting for skins are also concerns.

Notes

Sources

External links Media related to Paraná Flooded Savanna Ecoregion at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Paraná flooded savanna

Start with the simplest possible case. Write down what Paraná flooded savanna claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Paraná flooded savanna before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Paraná flooded savanna ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Paraná flooded savanna

In research: Paraná flooded savanna appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Paraná flooded savanna in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Paraná flooded savanna is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ecoregions of Argentina, Ecoregions of Paraguay, Flooded grasslands and savannas, so understanding it makes those chapters shorter.
In everyday life: Look for Paraná flooded savanna outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Paraná flooded savanna in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Paraná flooded savanna means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
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Frequently asked questions

What is Paraná flooded savanna in simple terms?

Why does Paraná flooded savanna matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Paraná flooded savanna?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Paraná flooded savanna.