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Portal:Ecology/Selected picture

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<Portal:Ecology

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Grasslands are found in mostecoregions of theEarth. Above are grasslands near Elsrickle, South Lanarkshire, Great Britain.

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Credit: PLoS, Image Credit: (A, C, E, and F) by Rob Knell; (B and D) by Tom Ings
Waspmimicry - A and B show real wasps; the rest are mimics: threehoverflies and one beetle. Mimicry is part of theevolutionary process ofadaptation.

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Credit: Lynn Betts, USDA Natural Resources Conservation Service
Topsoil is the upper, outermost layer ofsoil, usually the top 2 inches (5.1 cm) to 8 inches (20 cm). It has the highest concentration oforganic matter andmicroorganisms and is where most of theEarth'sbiological soil activity occurs. Pictured: Terraces, conservation tillage, and conservation buffers save soil,control erosion and improve water quality on this Iowa farm. 1999.

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AVenus Flytrap (Dionaea muscipula) closing after receiving a stimulus. Venus Flytraps arecarnivorous plants that catch and digest animal prey—mostlyinsects andarachnids.

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Credit: Composite image created byUser:Medeis
There are manydiverseanimalspecies on theplanet.

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Credit: U.S. Fish and Wildlife Service
Drawing of anAmerican paddlefish (Polyodon spathula). Also called theMississippi paddlefish orspoonbill, they live in slow-flowing waters of theMississippi River drainage system and may grow to 7 feet (220 cm) and weigh up to 220 pounds (100 kg). They appear to have been extirpated fromLake Erie and its tributaries.

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Ocellaris clownfish often livesymbiotically with theHeteractis magnificasea anemone, using them for shelter and protection.

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SomeHydrothermal ventssupport peculiar ecosystems, based on dissolved minerals. Hydrothermal vent communities are able to sustain such vast amounts of life because vent organisms depend onchemosyntheticbacteria for food. The water that comes out of the hydrothermal vent is rich in dissolved minerals and supports a large population of chemo-autotrophic bacteria.

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Credit: Nicolas Pourcelot
Alimule (Horseshoe crab) in theHạ Long Bay,Quảng Ninh province,Vietnam. Horseshoe crabs arearthropods that live primarily in shallowocean waters on soft sandy or muddy bottoms.

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Credit: Andrew Dunn (User:Solipsist)
Mold growth covering a decayingpeach. The frames were taken approximately 12 hours apart over a period of six days. Molds arefungi that grow in the form ofmulticellular filaments calledhyphae. Molds are considered to bemicrobes but microscopic fungi that grow as single cells are calledyeasts.

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Threepolar bears approach theUSS Honolulu (SSN-718), 280 miles from theNorth Pole. Polar bears haveadapted through the process ofevolution to have white fur that matches the white, icyarctic tundra.

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Credit: Jon Sullivan
Abee collectingpollen. Bees are flyinginsects closely related towasps andants, and are known for their role inpollination and for producinghoney andbeeswax.

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Sunflowers weredomesticated by humans, and are native toCentral America. The evidence thus far is that it was first domesticated inMesoamerica|, present dayMexico, by at least 2600 BC. It may have been domesticated a second time in the middleMississippi Valley, or been introduced there from Mexico at an early date, asmaize was. Sunflower leaves can be used as a cattle feed, while the stems contain afiber which may be used in paper production.

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Thecarbon cycle is thebiogeochemical cycle by whichcarbon is exchanged between thebiosphere,geosphere,hydrosphere, andatmosphere of theEarth. Burningfossil fuels leads to the addition of extra carbon into the cycle over what naturally occurs and is a major cause ofclimate change.

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Credit: U.S. Geological Survey
An animation of theEarth's hypothesizedPangaea separation. Pangaea is hypothesized as asupercontinent that existed during thePaleozoic andMesozoic eras about 250 million years ago, before the componentcontinents were separated into their current configuration.

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Credit: Sebastien D'ARCO
Lightning is anatmosphericelectrostatic discharge (spark) accompanied bythunder, which typically occurs duringthunderstorms, and sometimes duringvolcanic eruptions ordust storms. The study of the atmosphere and atmospheric variables that affect variousecoregions andecosystems is a significant part of the discipline of Ecology.

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Credit: User:Krokodild
Termite mounds inTanzania with varied heights of chimneys regulate gas exchange, temperature and other environmental parameters that are needed to sustain the internal physiology of the entire termitecolony.

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A rockystream inHawaii, an example of ariparian zone. A riparian zone or riparian area is the interface between land and ariver or stream.

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Credit: Phil P Harris
An area of theAmazon Rainforest inBrazil. Thetropical rainforests ofSouth America contain the largestdiversity of species onEarth.

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Schoolingbigeye trevally. Inbiology, any group offish that stay together for social reasons are said to be shoaling and if the group is swimming in the same direction in a coordinated manner, they are said to be schooling.

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TheIguazu Falls, on the border ofBrazil andArgentina arewaterfalls of theIguazu River located on the border of the Brazilian State ofParaná and the Argentine Province ofMisiones.

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Abee swarm ofApis mellifera ligustica (theItalian bee), a sub-species of thewestern honey bee (Apis mellifera), on a fallen log

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Plantbiodiversity—"Green wall", inLille, northernFrance

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