Coral Reef Ecosystem dynamics. At first glance, coral reef ecosystems seem to present something of an incongruity. The standing stock of reef fish represents a significant nutrient resevoir for a these systems.
Do you like this video? It most likely contradicts in-game information and lore, and thus should not be taken as canon information. Read at own risk This article contains unmarked spoilers. Players new to the game would want to avoid or be cautious toward this article. Kharaa is an alien bacterium discovered by the Precursor Race during the exploration of an unknown planet.
It seems to have completely taken over Planet B. It is described in the Degasi PDAs as "part of the ecosystem", with further suggestions that the Degasi survivors were infected at some point - as stated by Bart Torgal while discussing the flu-like symptoms the crew was experiencing.
Early on, the player's PDA and Lifepod will make note of the high levels of bacterial infection in the water.
The PDA notes that Kharaa is unlike any infection thus discovered in human history, suggesting that Kharaa's biological design is far more drastic compared to diseases such as Yersinia pestis plague.
It is stated in Precursor data that the Kharaa bacterium has killed over billion individuals over the course of time since its discovery. Their core worlds were quarantined off, and research facilities such as the one on B were created to find a cure.
After a Sea Dragon Leviathan damaged the Disease Research Facility in an attempt to retrieve its offspring, the previously contained Kharaa bacterium was released onto the planet.
This decimated the planet's ecosystems, as much of the life on the planet died due to the bacterium's immuno-repressive behaviour and genetic corruption. This prompted the Precursors to initiate their emergency quarantine: The Quarantine Enforcement Platform shoots down all approaching or departing spacecraft to prevent Kharaa being spread to other planets.
The PDA estimates that Kharaa incubates in two weeks and quickly kills its host after it reaches a substantial infection level. It accomplishes this by shutting down the immune system already making the infected host susceptible to other diseases and causing genetic mutation to the host's DNA, and causing alterations to the body structure, eventually leading to a total shutdown of the organism due to its inability to keep functioning properly.
According to Precursor data, the bacterium is capable of entering the body through the skin, and causes an increase in aggression in its host.
Warpers were created to keep the levels of Kharaa to a minimum, to do so they will attempt to kill infected faunain an effort to control the spread of the bacterium. Ryley Robinson is infected with Kharaa, though he only becomes aware of it after attempting to disable the Quarantine Enforcement Platform, as the deactivation terminal will tell him that he is infected and therefore cannot use it, thus forcing Ryley to secure a cure in order to leave the planet.
The infection only becomes noticeable when Ryley reaches the Disease Research Facility and is prompted by the PDA to perform a self-scan. At this point it will warn him that the infection is reaching a critical stage and his skin breaks out into glowing green cysts.
The same happens to Medical Officer Danby in Lifepod However, unlike Ryley, Danby developed visible signs of infection within three hours. The reason for this is unknown, although the infection rate most likely varies depending on the individual.
However, it is also possible that since Ryley had been exposed to the unstable variation of Enzyme 42 for prolonged periods of time, it slowed his progression, whereas Danby was not, and Kharaa quickly spread throughout his system. The Degasi survivors were also infected at one point.
Bart Torgal attempted to find out what it was, although he was unsuccessful as Marguerit continually brought specimens for him to study near death or injected them with Transfuser serums, making them unreliable test subjects. However, he was able to deduce that every organism was infected, as well as taking precautions to ensure the Degasi crew's survival.
However, upon the destruction of the Deep Grand Reef base, Bart fled to the Safe Shallows and began noting the details of Kharaa on him, and eventually flees to the Floating Island, where he makes his final log and most likely succumbs to the bacterium.
If an infected creature is placed inside an Aquarium or Alien Containmentthe creature will infect the rest of the creatures inside soon after. However, this is purely cosmetic and has no impact on gameplay.Major land–use changes have occurred in the United States during the past 25 years.
The total area of cropland, pastureland and rangeland decreased by 76 million acres in the lower 48 states from to , while the total area of developed land increased by 36 million acres or 48%. What Is an Ecosystem? An ecosystem is a community of animals and plants interacting with one another and with their physical environment.
Ecosystems include physical and chemical components, such as soils, water, and nutrients that support the organisms living with them. Nov 21, · The proposed plants would be near the Sundarbans, a treasured ecosystem along Bangladesh's coast. Known as the Princess Tree, Empress Tree, and Royal Empress Tree, Paulownia Trees are highly invasive and are destroying native ecosystems from Maine to .
Paul Andersen explains how ecosystems change over time. He starts by explaining how global climate change will impacts ecosystems around the planet. Ecosystem health is a metaphor used to describe the condition of an ecosystem. Ecosystem condition can vary as a result of fire, flooding, drought, extinctions, invasive species, climate change, mining, overexploitation in fishing, farming or logging, chemical spills, and a host of other rutadeltambor.com is no universally accepted benchmark for a healthy ecosystem, rather the apparent health.