Especies en peligro de extinción [completo]Presentation Transcript
Presentation Name Silvia Paola Fiorin Number 21 Ticher Wendy Quesada Topic Wildlife in Extinction Date 07-03-2013
A species is considered endangered,whether plant or animal, when all theliving members of that taxon are indanger of disappearing. This may be dueto both direct predation on the speciesand the disappearance of resources uponwhich their lives, both human action, dueto changes in habitat, due to acts of God(such as natural disasters) or gradualchanges in climate.+
This large global problem can be caused by both direct deforestation of the species or the disappearance of some resource it depends on, human action often produces changes in the habitat of plants and trees, there is the threat of endangered plant extinction on our planet also climate changes (% minority) where his percentage is not very high.Living plants important to our habitat, provide air to humans, drinking water, food, fuel and medicines especially. However, a large percentage of plants are on the verge of extinction, join groups threatened the planet beings.
A study by the International Union for Conservation of Nature (IUCN), the total number of threatened plants amounted to 380,000 worldwide. Rainforests are the worlds most endangered regions and seedlings most endangered species. The main culprits for this are humans.In areas of flora destruction threaten our planet has reached the Americas is one of the most affected. Mexico, Argentina, Brazil, Colombia, Chile are among the most affected by the extinction of endangered flora.
ENDANGERED PLANTS IN THE DOMINICAN REPUBLIC Many of the endemic species is threatened or endangered, the most susceptible are those whose distribution is restricted to small areas and reviews. Some of which are threatened with extinction are:- Pereskia quisqueyana (Cactaceae), present in Bayahibe.- Montecristina Salvia (Lamiaceae) in the Morro de Montecristi.- Firefly Acacia (Mimosaceae), Sierra Martín García.- Goetzea ekmanii (Goetzeaceae) in Cumayasa riverbank.- Reinhardtia paiewonskiana (Palmae), Sierra de Bahoruco.- Pseudophoenix ekmanii (Palmae), in Oviedo.- Chacueyana Eugenia (Myrtaceae), in the river Chacuey.- Pimenta haitiensis (Myrtaceae) in Oviedo - Pedernales.- Caesalpinia barahonensis (Caesalpiniaceae), Sierra Martín García - Barahona.- Talisia jimenezii (Sapindaceae), on the beach of Bayahibe.There are also pine (Pinus occidentalis), royal palm (Roystonea hispaniolana), palm or coconut catey macaque (Bactris plumeriana) and guano (Coccothrinax montana).
Recently the Alliance for Zero Extinctionprepared a report on the 595 sites in theworld where 794 species are concentratedendangered, as many of these species aresmall with little mobility and are inhabitedaerial restricted distribution.
The populations of American crocodiles, Ricord iguana and turtles are among the endangered species in the Dominican Republic, as a red list released today by the Ministry of Environment and Natural Resources local.The agency also reported that orchids and bromeliads are among the most endangered species of flora in the Caribbean nation.The species of fauna and flora in critical conditions in the country have been subjected to various threats, which are habitat destruction, fragmentation of ecosystems, species and hunting
THE PEREGRINE FALCON ENDANGERED The Peregrine Falcon is in danger of extinction, is a bird that lives in South America, North America, Canada, Mexico and Baja California, and also nests on offshore islands california Gulf.This bird of medium size, has great flying skills, and chopped can reach a speed of around 180 km / h, their food consists of meat from other smaller birds that hunt in flight.The population of this bird species was very strong, but is now endangered and rarely seen a copy, the causes are poisoning are caused by a toxic substance called restricted use DDT.For this in Mexico and other countries, the Peregrine Falcon became part lists endangered animals to raise public awareness and try to save this species.
THE ENDANGERED TAPIR It was common to see a tapir in the rainforests of southern Mexico and Central America, it is very difficult to find a copy, which is astonishing to researchers seeking this kind to try to preserve it, so that extinction seems to be the fate of this species.The main cause of this tragedy is the man who is about to wipe out a species that has existed for many centuries.The tapir is endangered, is an animal stout, with short legs and elongated nose, similar to a small tube, the Tapirus bairdii is the only species that lives in southeastern Mexico, and just may be the odd copy after a search of several months.The indiscriminate hunting, destruction of their habitat, their low reproductive potential and their docility, have been the causes of the threat of extinction. Pronatura currently performs a number of activities to protect this species from extinction, but its implementation will take some time.
HAWKSBILL ENDANGERED The hawksbill turtle is a species of medium size, not measuring up to one meter in length, has the most narrow and elongated head of all sea turtles, its beak is horny sharp, narrow, no mountains at its edges and sharp as a hawk.This turtle feeds on sponges, jellyfish, snails, crustaceans, sea urchins, starfish, shellfish, seaweed and fish, can also include in your diet to crabs, urchins and red crab.? Inhabits the Pacific side from Baja California, Mexico to southwestern Peru and northeastern Atlantic from the United States, this is one of the most beautiful sea in the world and has been so strongly captured to get their eggs, their meat, skin and above the shell for use in the manufacture of various ornamental objects such as combs, jewelry and eyeglasses frames, so it is threatened and endangered.
THE MANATEE ENDANGERED The manatee is a species that is in critical danger of extinction, food for several centuries the imagination of sailors mistook as the sirens due to sea mist, now this beautiful species is about to disappear from the planet.? the main culprit of this crime is the man, because their meat and trade, especially because it is an extremely easy to hunt prey. The manatee meat is tasty and their skin is used for the manufacture of whips, canes and shoe soles, the bones of this endangered animal is used for ornamental and jewelry, especially her ribs.? In Mexico can be found southeast, covering coastal areas of the Gulf, from Veracruz to Chetumal, in the Yucatan Peninsula, Pronatura is proposing the creation of "safe havens and sanctuaries" for recreation and research, in order to save the manatee populations still exist in Mexico from extinction.
The populations of American crocodiles, Ricord iguana andturtles are among the endangered species in the DominicanRepublic, according to a list released red by the Ministry ofEnvironment and Natural Resources local.?? The agencyreported, likewise , that orchids and bromeliads are among themost endangered species of flora in the Caribbean nation.?species of fauna and flora in critical conditions in the countryhave been subjected to various threats, which are habitatdestruction , ecosystem fragmentation, hunting and introducedspecies.?? However, the biggest threat is increasing theagricultural frontier in the habitats themselves of them, theenvironment ministry said in a statement.
CAUSES OF EXTINCTION OF ANIMALS The main causes of the extinction of animals are generally related to human activity, and this is totally true and that has always been exploited natural resources indiscriminately regardless of the dangers that this entails.The main causes of the extinction of the species are:1. The killing of animals for their fur value.? 2. The intensive fishing and hunting to market their meat.? 3. Contamination of alien species to their habitat, or "invasive species." 4. Dams, waterways, and other large enterprises that man constructs.? 5. Marine pollution by oil loss.? 6. Erupting volcanoes and natural features such as "gray death".? 7. Other pollutants affect, as the deposits of uranium, polonium, radium and other radioactive elements.? 8. Forest fires, crash boats, etc..