Ring Species: A Catalyst for Speciation After spending time on the Galapagos Islands studying the origin of various species‚ former divinest Charles R. Darwin proposed the evolutionary theory of natural selection‚ a mechanism by which advantageous variations in a population are preserved while unfavorable variations are lost (Berkeley‚ 2008). As a result of these variations‚ some individuals are better acclimated to their environment than others. This results in the better-suited individuals outcompeting
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Loss of Species Every year a new species gets placed on the endangered species list‚ extinction is a natural process but due to human activity there has been a rapid decline in the wild species population. Loss of habitat or alteration‚ hunting‚ introduction of foreign species‚ and disease are major culprits in the extinction rate. The protection of species is an important element to the survival of biodiversity as well as human sustainability. The loss of a species means humans will lose out
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The European Green Crab The European Green Crab‚ also scientifically known as carcinus maenas‚ is an invasive species. It ha so invaded numerous coastal shores including South Africa‚ Australia‚ and both coasts of North America. The European Green Crab arrived on the eastern seaboard over 150 years ago. It is one of the most successful aquatic invaders. In 1879‚ the Green Crab found susceptible A Green Crab’s niche is as an omnivore. They eat clams‚ mussels‚ small crabs‚ algae and many other small
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Keystone species play a large role in each ecosystem‚ they have the ability to alter their ecosystem or be the reason they completely collapse. Keystone species are the reason that many different species exist‚ these other species highly depend on the keystone species for survival‚ if a single keystone species were to go extinct‚ it is likely for other species populations to decrease. Other species benefit from keystone species in a variety of ways‚ such as food supply‚ shelter‚ or a water source
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KEYSTONE SPECIES-BEES Elliott Chang Keystone Species are species that would affect our lifestyle and how we live if they were to die out. There called Keystone Species because in an arch‚ there is one stone that keeps the 2 halves of the arch in place and if you were to take it out‚ everything would collapse. Bees are like that. Bees contribute to our society economically‚ ecologically and biologically. They are the species that really make everything the way it is for us. Bees contribute
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it was introduced to Florida in the late 1800s for “ornamental purposes” (3B). Today‚ however‚ it is considered to be a nuisance growing up to “36 feet‚ with upright‚ thick and dense branches” (3B). This small tree is a fast growing‚ invasive‚ and seed producing species that is shading out other vegetation. In addition‚ people who are allergic suffer from rash like symptoms called dermatitis and respiratory problems. In comparison to the United States‚ South America’s Schinus Molle‚ also known as Brazilian
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family. CLADE: Eudicot CLADE: Asterids ORDER: Asterales FAMILY: Compositae SUB-FAMILY: Asteraceae (herbaceous mat forming spreading plant with round stems rooting at nodes with a fibrous root system) (Leaves are tri-lobed GENUS: Sphagneticola SPECIES: S. Trilobata - It has a very wide ecological tolerance range. - Grows best in sunny areas with well-drained‚ moist soil at low elevations. - Listed in
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GROWN-UP’S ARE A DIFFERENT SPECIES Understanding grown-up’s is never easy. They hold on to things that were. They wonder what’s to come... and then they think they know everything just because they have experience! Really!! Antoine de Saint said: “Grown-ups never understand anything for themselves‚ and it’s tiresome for children to be forever explaining things to them”. For example: Have you ever seen a grown-up just after they got a new cell phone? They’re too scared to explore the menu options
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LAB #3 TITLE: SPECIES DIVERSITY AIM: To determine how moisture content of sand influences the distribution of fauna along a sandy beach. MATERIALS: 100m transect‚1m x 1m quadrat‚shovel‚30cm ruler‚40cm x40cm sieve‚ digital probe‚ sweep net PROCEDURE: 1. The area was selected for the 100m transect to be laid. 2. The transect was carefully placed ensuring that the end of the transect was in the moist part of sand. 3. The quadrat was placed along the transect on either sides. 4
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oysters‚ scallops‚ and clams. In 1988 Zebra mussel were first detected or found in Canada. In 1990 zebra mussels covered every surface they could grow on. They have become an invasive species in North America‚ and as such they are the target of Federal policy to control them‚ for instance in the national invasive species act (1996).As zebra mussels have also been known to attach themselves to the crayfish bait‚ this is one of the ways they have spread to different waterways. Zebra mussels got in
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