[[quoteright:240:http://static.tvtropes.org/pmwiki/pub/images/dragons_riders_8930.jpg]]

Pern, an isolated world with no useful resources, seemed like the ideal place for [[SpaceAmish people tired of technology]] to establish [[{{Arcadia}} a pastoral utopia]], until Thread started falling from the skies. An alien fungus that could devour a cow in seconds had not been part of the plan. Rather than permanently resort to technological measures, the colonists used genetic engineering to create dragons, a solution compatible with their principles since, like the spaceships that had brought them to Pern, it was technology they could use once, then discard. Using planes to fight Thread would meant living in an industrial society capable of supporting them; dragons could be supported by the idealised medieval society the settlers had wanted. There's also the matter that they'd been warned the planet's resources were "negligible". There's insufficient metal and fuel for such an industrial society, whether or not they want one.

The first Pern short story, "Weyr Search", was published in 1967. Creator/AnneMcCaffrey kept writing them for another forty years, though later in collaboration with her son, Todd, who eventually took over the series.

Most of the books take place over two thousand years after Pern was first settled, beginning when Thread has been absent for 400 years, ever since most of the dragon riders mysteriously disappeared. Only a handful of people still believe Thread was ever real, and there aren't enough dragons left to fight it if it should return, which it is due to do any day now. Fortunately, it turns out that dragons aren't just fire-breathing [[PsychicPowers telepathic teleporters]]; they can also TimeTravel. The heroine travels 400 years into the past, and brings forward the missing dragon riders, creating a StableTimeLoop.

Subsequent books dealt with the culture clash between the old-fashioned time-displaced dragon riders and the people they had come to save, and with the gradual rediscovery of technology, which led to the unearthing of the original spaceship, and a final end to Thread. There are also several prequels, describing how various aspects of Pern society came to be. Some of the books overlap with each other, covering the same events but following different characters.

The series initially had a [[{{Fantasy}} fantasy]] feel, with a few ScienceFiction trappings, then evolved into ScienceFantasy.

There was also a [[http://boardgamegeek.com/boardgameversion/23879/nova-games-english-edition board game from Nova Game Designs]].
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!!These books provide examples of:

* AbusiveParents: Petiron was not a good father, to put it lightly. Not actively vicious, but cold and harshly critical of Robinton to the point where it's hard to tell the difference. Then there's Menolly's father beating her for composing music, and her mother deliberately attempting to cripple her hand so she can't play an instrument. She rises above every other hardship in her life, but she ''never'' forgives her parents.
** Jaxom grew up as the ward of Lord Warder Lytol, an ex-dragonrider. While Lytol was by no means abusive, suffice to say that growing up with an EmptyShell for a father substitute did not make life easy for Jaxom.
* AcePilot: [=McCaffrey=] based her dragon riders' personalities and physical characteristics on real-life fighter pilots.
* ActionGirl: Female dragonriders in general -- Moreta, Sorka, and Mirrim, in particular.
* AdamAndEvePlot: Averted in the short story "Rescue Run".
* AgonyOfTheFeet: Menolly gets caught out during Threadfall and runs the skin off the bottoms of her feet (after wearing through the soles of her shoes) trying to reach shelter. She's spotted and rescued by a dragon and rider. Years later, she comments that her feet are still unusually sensitive.
* AIIsACrapshoot: Averted with AIVAS, who is the anti-[[Film/TwoThousandOneASpaceOdyssey HAL 9000]]. [[spoiler:Not only does he help free Pern from thread forever, he ''commits suicide'' rather than let the people of Pern become dependent on him.]]
* AlienBlood: Pernese native animals have green, copper-based blood.
* AlienSky: The Red Star, of course, but Pern also has two moons. Plus, Pern is far enough away from Earth that the night sky would look very different, with none of the familiar constellations. A few references in ''The Skies of Pern'' do make it clear that at least some of the same stars are visible, though naturally from a completely different perspective.
* AliensMadeThemDoIt:
** Dragon mating has a profound psychic effect on nearby humans, particularly their bondmates, making a sexual union between their riders near-compulsory. Weyr culture has adapted to this situation, so permanent relationships among dragonriders are rare. However, a rider's preference can influence his/her dragon's choice of partner -- witness the fact that Mnementh and Ramoth always mate despite the competition from dozens of other bronzes.
** It's noted in ''Dragonseye'' that the riders don't necessarily pair off as the dragons do, but all that needs to happen is that the rider stays near their preferred partner during a mating flight. One character in the book notes that "there are plenty of people interested" in participating when a mating flight is in progress.
** Fire lizards have a similar effect on their humans, although not as compelling. Still, if you own a gold and someone near you owns the only bronzes in the vicinity, and she decides to have a mating flight...you'd better like each other pretty well. In several cases, such as Menolly and Sebell, this leads to a RelationshipUpgrade.
* AlphabeticalThemeNaming: Dragons name themselves at Impression, always with a name that ends in -th: Faranth, Ruth, Mnementh, etc. Why they all seem to hatch instinctively knowing to do this is not explained or even brought up.
* AristocratsAreEvil: The lion's share of the Lord Holders at the beginning of the series are spiteful, narrow-minded old men that create headaches for F'lar and the other protagonists on a regular basis. They gradually get replaced by younger and more reasonable successors.
* AuthorCatchphrase: [=McCaffrey=] has a name, "Johnny Greene", or "J.G.", that she likes to insert into most of her works. Jayge is an example. One of the companion pieces revealed that the real "Johnny Greene" was a family friend who was murdered in France prior to the publication of Renegades of Pern.
* BadMoonRising: Well, technically it's a planet, but the Red Star definitely counts.
* BestServedCold: Lessa was ready to wait ten years disguised as a menial servant to take revenge on the man who slew her entire family. During this time she turned Ruatha, one of the wealthiest Holds, into a complete ruin through simple sabotage and slight [[PsychicPowers telepathic]] emotional adjustments, and manipulated [[GuileHero F’lar]] into a duel with Fax to make him pay. She was only ten years old when this started.
* BitchAlert:
** A weyrwoman or greenrider usually gets alerted to mating time when she/he notices her/his queen/green is in a foul, violent mood. [[spoiler:Later this applies to Mirrim, if only making her slightly worse off than her normal attitude.]] Humans around the rider in question tend to notice that the rider's getting more than a little cranky, too.
** This applies even to queen fire lizards. In "Dragondrums" Sebell's Kimi refuses to share any fish she caught.
* BlindJump: Going ''between'' without a destination firmly in mind will cause the dragon and its passenger(s) to never emerge, which is fatal. Poorly imagining one's destination can result in a TeleFrag. Conversely, imagining aspects of one's destination ''too well'' can result in accidental TimeTravel. This is all covered in the extensive training given to young dragonriders, with the grisly examples of those who didn't pay attention in the past serving to drive the lessons home.
* BondCreatures: Both dragons and fire lizards, since the former are descended from the latter.
* ABoyAndHisX: Dragonriders and their dragons; at various points, people in general and their fire lizards.
* BrainyBrunette: Lessa.
* BreathWeapon: Most of the dragons ingest an ore called "firestone" to enable them to breathe fire. The phosphorus in the firestone reacts with the dragon's stomach acid to produce phosphine (chemical formula [=PH3=]), a poison gas that ignites spontaneously upon contact with air. The egg-laying gold dragons aren't allowed to chew firestone because it has the side effect of sterilizing females. In ''Dragonsdawn'', queens who try to eat firestone vomit it back up, making it necessary for their riders to use flamethrowers.
* BringMyBrownPants: Discussed by riders in ''Dragonseye'' who are about to face the first Threadfall in two hundred years.
** Invoked by the riders in ''Dragonsdawn'', after their first (unplanned) flight ''between.''
* BrokenBird:
** Lessa. She was the only survivor of a slaughter that killed the rest of her family and then spent years hiding who she was as a lowly servant. She gets better.
** Menolly's only friend and who would encourage her abilities died and then her father put her through a great amount of abuse to ensure she never sang or played again. Her mother helped him do it.
* TheBully: Piemur faced a quartet of them in the Drum Heights, and the abusive Journeyman Dirzan who ignored his complaints about the four bullies. [[spoiler:The bullies' last act against him was to grease the steps of the stairs, so he would slip on his run back up the steps. When the fall knocks him unconscious, they clean the grease off the steps so it will look like an accident...and then ''leave him lying there''.]]
* CallARabbitASmeerp: Runnerbeasts and herdbeasts, sort of. While they are related to horses and oxen (and are described as looking similar), they were significantly genetically engineered by the original colonists, so they're probably a different species, technically.
* CantLiveWithoutYou: Once a rider dies, the dragon normally commits suicide post-haste. Moreta's queen is temporarily tethered by her mothering instinct for the eggs she just laid, but suicides as soon as the eggs are hard enough to survive without her. Riders whose dragons die also frequently suicide; those who don't, such as Lytol, remain somewhat shattered for the rest of their lives, if not outright mindblasted (Kylara). Brekke is helped a great deal by her rare ability to hear other dragons.
* CharmPerson: Part of Lessa's PsychicPowers manifest as a weak form of this.
* ChillyReception:
** Menolly is accepted by ''almost'' everybody in Harper Hall...but the ones who object to her presence make her life hell. A rare example of the protagonist not winning everyone over; instead, she settles for getting her own back.
** Piemur's example is worse: after his voice breaks, he's sent to become a drum apprentice until his voice stabilizes. However, he's also made Master Robinton's apprentice, which often involves being sent on very confidential missions. Determined to prove that he's not just a joker and a slacker who coasts by on natural talent, Piemur makes a decision to stop playing around and start working -- and the other drum apprentices, who were expecting the joker, don't take it well, especially when Piemur learns drum measures at a speed most of them probably couldn't match. His going on said missions, including one to a Gather at Igen Hold and, as far as they knew got a free day because of a Hatching at Benden Weyr[[note]]In truth, he went to the Hatching but knew that would make things worse.[[/note]], just makes it a ''lot'' worse[[note]]Starting with finding his belongings and bed soiled with urine upon his return and ending with them greasing some steps so he nearly killed himself returning up the steps.[[/note]]. Further problematic was the Journeyman who was generally on watch never believed him on any matters.[[spoiler:Then Menolly, by then a Journeyman herself, and Master Robinton, found out what was going on and the shit hit the fan very hard indeed.]]
* ColourCodedForYourConvenience:
** Dragons' colors denote gender, size, and rank, exactly as their fire lizard ancestors. Gold = Queens, the dominant females and the primary egglayers; Bronze = the largest and dominant males, ridden by wingleaders; Brown = smaller and weaker males, tend to be ridden by wingseconds; Blue = the smallest, fastest, and least intelligent males; Green = the smallest, subordinate females, who are typically infertile due to firestone consumption.
** The various Holds and Crafts have traditional colors and shoulder knot patterns that denote rank and affiliation. About the only color ever consistently mentioned is that Harpers are associated with a light shade of blue known as "Harper Blue."
** The '''B'''ronze, '''B'''rown, and '''B'''lue dragons are '''B'''oy dragons. The '''G'''old and '''G'''reen dragons are '''G'''irl dragons.
* CometOfDoom: The Red Star, although it's technically not a comet, serves the role plot-wise. There's a more direct example in ''The Skies of Pern''.
* ConflictBall: Some characters seem to switch between supportive and antagonistic between books as plot demands.
** Jayge and Aramina, who were seeking confirmation of dolphin intelligence from AIVAS in ''All the Weyrs'' so their son and his friends wouldn't be seen as crazy, to ''Dolphins'' where '''they''' thought he was crazy and irresponsible.
** Toric is a force unto his own, see WildCard below.
* CoolPet: Fire lizards.
* CorruptBureaucrat: Chalkin, Lord Holder of Bitra in ''Dragonseye'', who refuses to believe that Thread will return and won't take the necessary precautions to protect his people. And that's just the tip of the iceberg of the things he does.
* CreatureHunterOrganization: The Titular Dragonriders, being specifically formed to fight the Thread.
* CultureClash: Between Weyr, Hold, and Craft. Their traditions have diverged sharply over the centuries and frequently come into conflict in the main storyline. Similarly, a major conflict arises between the Oldtimer Weyrfolk who are brought forward in time by Lessa and the more "modern" Weyrfolk under F'lar's command.
* DeathByChildbirth: Happens to Jaxom's mother, and is generally a risk in a low-tech, feudal society.
* DeathWorld: [[spoiler: F'nor and Canth]] pay a visit to the Red Star and come back near-dead and skinless from the corrosive, unbreathable atmosphere.
* DespairEventHorizon: The death of a dragon or its rider will send the living member of the pair into despair or insanity. If the rider dies, his dragon will invariably commit suicide by going ''between''. If the dragon dies, the rider may become AxCrazy, [[DrivenToSuicide suicidal]], an EmptyShell, or all of the above.
* DidntThinkThisThrough: Tenim's plan towards the second half of ''Dragon Fire'' is to amass a vast amount of firestone before Thread returns [[spoiler: and then destroy the source so that he can profit from controlling its supply to the dragonriders]]. Tenim seems to miss the obvious flaw with this plan; since [[spoiler: dragonriders go through a lot of firestone over a short period of time, his supply wouldn't last very long, and if it ran out when Thread started falling practically everyone on the planet would die]].
* DisappointedInYou: Piemur wanted to prove himself to Robinton and Menolly. He didn't want to disappoint them. So he kept silent about the full extent of the abuse his fellow drum trainers were putting him through. [[spoiler:Even after he nearly died because they greased the stairs, this was the reason he gave.]] His friends were horrified at the thought that they inadvertently caused the situation by putting the pressure on him.
* DomesticAbuse: F'lar is ''very'' rough with Lessa at first; he gets less so as their relationship matures.
* DontMakeMeTakeMyBeltOff: Menolly's father beats her in this manner for the grave sin of improvising her own music.
** While F'lar doesn't go ''quite'' this far, he has a tendency in the earlier books to shake Lessa when she upsets him.
* DramatisPersonae: Used in most of the early Pern novels, then quietly dropped later.
* DragonRider: One of the {{Trope Maker}}s.
* DrivenToSuicide: Happens to riders whose dragons die, and vice versa.
* DrowningMySorrows: Even decades later, Lytol drinks to unconsciousness after a dragon dies to numb the pain of losing his.
** Robinton is also overly fond of drink, and has been ever since his bride Kasia died of a plague. Though he's managed to cultivate a reputation as a wine connoisseur, and so his frequent drinking is rarely looked down upon.
* DueToTheDead: Centuries after she sacrificed her life to save Pern, Sallah Telgar's body is brought down from space and given a very elaborate ceremonial funeral, including the coffin being borne by queen dragons.
** Menolly is first introduced in ''Dragonsong'' as singing the funeral elegy for Petiron.
* EmptyShell: If a rider who loses his dragon does ''not'' commit suicide, he or she is frequently left as this. The quintessential example is Kylara, who is left almost catatonic when her queen dies.
** Lytol manages to avert this. While he never gets over the pain of losing his dragon, he presses on through life by engaging in other pursuits. First by being a Weaver, then by dedicating himself to making Ruatha Hold prosperous again for his ward Jaxom, whom he treats as a son.
* EnemyToAllLivingThings: Thread eats its way through anything organic -- being tied out during threadfall is the single most dire punishment that a criminal can be sentenced to. ''Drowned'' Thread OTOH (Thread can't survive in water) is a rich food source for marine life. While the rest of Pern suffers due to Thread, fish and other sea animals thrive.
* EternalEnglish: Over 2500 years on Pern have introduced a lingual shift despite the best efforts of the Harpers. However, the shift is not so severe that, allowing for the loss of context, they cannot understand the language of their ancestors. Documents and recordings from the colonists are still understandable to modern characters (though some of the context has been lost). After being unburied, AIVAS is able to rapidly adjust its language to make itself understood. The dolphins underwent a similar linguistic shift, mostly becoming simpler and filled with abbreviations (for instance, the "blood fish" that attach themselves to the dolphins' undersides like leeches became "bluufis").
* FantasticNamingConvention:
** A common naming convention among Weyrborn is to have the first half of one parent's name combined with the second half of the other's (modifying the end to the appropriate gender, adding '-n' or '-a'). In this way, you have Falloner and Lorana giving Falarnon, and Falloner and Manora giving Famanoran.
** When a male rider [[DragonRider Impresses]], they shorten their name and contract the first syllable. This originally developed to aid communication during combat, and later became a [[FantasticHonorifics honorific]].
*** Falloner becomes F'lon, Falarnon becomes F'lar, and Famanoran becomes F'nor.
*** One of the things that distinguishes Jaxom of Rutha Hold as ''not'' a Dragonrider is that he does not receive the honorific. Although before that decision was made, several characters discuss what his name might be foreshortened to.
** For the dragons themselves, each one has a single personal name, which always ends in "th".
** In Creator/{{Todd McCaffrey}}'s books from the 3rd Pass, it is revealed that watchwher have their own naming convention. Their names end in '-sk', with the first part taken from the name of the person or bloodline they are linked to. The closer the bond, the more of their name taken.
*** The watchwher for Fort hold is Forsk.
*** Nuella's first, green, watchwher renames herself to Nuelsk when she transfers her bond from Kindan. After she dies, Nuella then bonds a gold, Nuellask.
* FantasticRecruitmentDrive: When the dragonriders go on Search, they seek young men and women with latent telepathic abilities, able to bond with dragons.
* FantasticTimeManagement: Used mostly-trivially by Jaxom, and far more seriously by Moreta.
* FateWorseThanDeath: Most Pernese consider being banished from a hold a harsher punishment than execution, since they automatically assume the condemned is going to be eaten by thread. Several characters learn to survive holdless simply by hiding in caves. Menolly notes that most of the time very little Thread actually gets to the surface thanks to the dragonriders.
** Losing their bondmates is this for dragons/dragonriders. Riders whose dragons die usually commit suicide. Dragons whose riders die ''always'' commit suicide.
* FeministFantasy: Well, the installments written in the 1960s and 1970s were, [[FairForItsDay by the standards of the time]]. The goalposts have been moved considerably since then.
* [[FirstGuyWins First Girl Wins]]: Robinton's short-lived wife Kasia still haunts his dreams. When he becomes involved with Silvina, he offers to marry her when she informs him that she's pregnant. She refuses (gently) because it's Kasia's name he still says in his sleep; he never recovers from losing her.
* FlorenceNightingaleEffect:
** Jaxom and Sharra's relationship begins this way, after she treats him for Firehead Fever.
** When Lessa is treating F'lar's knife wound, she can't help but notice his manliness.
* FreeLoveFuture: The Weyr culture is highly liberated due to the nature of dragon/rider relationships; dragons mate with whom they choose and their partners are [[AliensMadeThemDoIt compelled to do the same]]. Children are fostered and raised by the Weyr as a whole to avoid attachments to any particular parent, given their high mortality rates.
* FunWithAcronyms: Pern ('''P'''arallel '''E'''arth; '''R'''esources '''N'''egligible), and AIVAS ('''A'''rtificial '''I'''ntelligence '''V'''oice-'''A'''ddress '''S'''ystem). WordOfGod says that Pern is a backronym; [=McCaffrey=] came up with the name for the planet a long time before deciding it meant anything.
* GenderRarityValue: Applies in this case to the dragons; golds are the least common dragon color and yet the ones primarily responsible for populating the Weyrs. Over the last Long Interval, the Weyr population diminished to the point where there was only one gold alive at any time, making the extinction of the species a real possibility and justifying the taboo against flying golds in combat, something which had not existed in previous Passes.
* GeneticMemory: There is a very strong implication that fire lizard memory is this; it's hard to imagine any other way that they could remember the events of Landing so vividly two thousand years later. In fact, it's fire lizard memory that leads Jaxom's team to discover the original Landing site, as well as AIVAS.
** Another possibility that has been implied is that the telepathic firelizards form a weak hivemind, complete with a collective memory. However, the effect is functionally the same.
* GeographicFlexibility: Travel times around Pern seemingly vary according to the [[TravelingAtTheSpeedOfPlot needs of the plot]].
* GetAHoldOfYourselfMan: When F'lar gets ill in ''Dragonquest'', he starts {{Wangst}}ing and must be told this by Lessa.
* GiantFlyer: The dragons.
* GoshDangItToHeck: When not using Pern-specific curses, characters have a tendency to say things like "dratted" or "blasted." There's even "Jays" in ''Dragonsdawn'', mean to be a {{Bowdlerization}} of "Jesus." Strangely, in the same book, one character calls another a "gobshite."
** By contrast, there are quite a few "S-" and "F-bombs" in ''Dragonsdawn,'' what with the initial colonists still speaking [[TranslationConvention (future) English]].
* GrowingUpSucks: For Piemur, puberty ends his sheltered life as a boy soprano. On the other hand, it also began his life as Robinton's secret apprentice, going to hatchings, smuggling queen fire lizard eggs, and... well, it stopped sucking pretty quickly.
* GuileHero: F'lar and Robinton, later Lessa. Also Sebell. It seems that this is one of the traits required to become [=MasterHarper=]. Menolly and Piemur to lesser degree.
* HappilyMarried: A lot of Pernese couples don't actually marry, but among those who do, there are a number of happy couples. Petiron and Merelan fit this trope, as did Robinton and Kasia (for the few days of their marriage). Even those who aren't officially married act like this anyway.
* HeroicAlbino: Ruth
* HideYourGays: Half averted. Homosexual men are not uncommon on Pern, and in fact most (if not all) blue riders fit the bill. There is never a mention of homosexual women, however.
* HorseOfADifferentColor: Dragons, of course, although real horses and oxen do exist.
* HotForTeacher: It takes a while, but Menolly and Robinton finally acknowledge their {{UST}} in ''The White Dragon'', although nothing comes of it. Her commitment to Sebell aside, Robinton had recently [[MayDecemberRomance suffered a heart attack]]...
* HugeGuyTinyGirl: F'lar and Lessa. Lessa is explicitly described as being little bigger than a child.
* HyperspaceIsAScaryPlace: ''Between'', the dimension used by dragons and fire lizards when they teleport, is devoid of sensation, airless, and brutally cold.
** And also apparently prone to causing miscarriages if a female rider is still in the early stages of pregnancy when she goes ''between''.
** Since the time spent ''between'' increases the further you go in time, hypothermia and oxygen deprivation almost killed Lessa when she went back 450 Turns.
* InterplayOfSexAndViolence:
** When a queen dragon is ready to mate, she turns into ''very'' touchy {{Tsundere}}, growling and taking swipes at any of the males that get too close.
** This applies even to queen fire lizards. In "Dragondrums" Sebell's Kimi refuses to share any fish she caught.
* IThoughtEveryoneCouldDoThat: Lessa talking to dragons, which gets F'lar ''extremely'' angry with her when he had been trying for years to figure out a way to coordinate all the dragons of a Weyr in combat.
* IHaveYourWife: How F’lar manages to convince the Holders to cooperate with Benden Weyr after the Long Interval -- he sends dragons to abduct their wives and daughters.
** Unusual mainly in that the ''hero'' (well, the heroine's LoveInterest) is pulling this maneuver - and has justification. If the dragonriders starve, the entire colonized continent of Pern will either be eaten by Thread or starve in the midst of their dead land.
* JackieRobinsonStory: Menolly becoming the first female Harper in the Harper Hall Trilogy.
** Well, the first one in a long time. It's been stated that before the pandemic in Moreta's time, which nearly wiped out humans on Pern, that there was far more sexual equality. After that, women reverted to more "traditional" roles because of the need to repopulate.
* JerkAss: Okay, let's count 'em. Kylara, Lord Meron, Thella, T'kul, T'ron, Mardra, Merika, Masterglasssmith Norist (leader of the anti-AIVAS group), Lord Fax, Lord Chalkin, Yanus (Menolly's father), and more. It seems that every major antagonist character in the series is not merely opposed to the heroes but a complete dick as well.
** Not just antagonists. F'lar in the first book is something of JerkassStu. Subsequent books rebalanced his personality considerably.
*** Mirrim's also a JerkAss, but while she's on the good guy side, everyone acknowledges that she's hard to get along with.
* KaleidoscopeEyes: Dragons' and fire lizards' eyes change color according to their mood.
* KillEmAll: Todd [=McCaffrey's=] solo books.
* KillItWithFire: Dragons and fire lizards do indeed breathe fire, although it's the result of a hypergolic gas released when they chew a naturally occurring mineral named "firestone". On foot and in the queens' wing, Thread is fought with flamethrowers, or nitric acid sprayers (colloquially termed "agenothree" in the books -- [=HNO3=], get it?)
* KnifeNut: Dragonriders don't carry swords, but many are deadly efficient duelists with eating knives.
* LegendFadesToMyth: In ''Dragonsinger'', we are introduced to the legend of Moreta, the Dragonlady who saved Pern from a deadly epidemic at the cost of her own life. ''Moreta: Dragonlady of Pern'' (published at a later date) recounts the actual events that gave rise to the legend.
* LoadsAndLoadsOfCharacters
* LongRunningBookSeries
* LostColony: The colonists wanted Pern to become this to live peacefully; the later discovery of Thread by a rescue ship mean it's now permanently lost as the entire system is under quarantine.
* MadLibFantasyTitle
* MagicalAbortion: The cold of ''between'' is sufficient to induce miscarriage and is deliberately used for this by female dragonriders, who are seldom able to take enough time off for pregnancy. It's either that, suffering ''accidental'' miscarriage from riding a dragon all the time, or fostering the kid out as soon as possible.
* ManipulativeBitch: Lessa, before impressing Ramoth. She gets better.
* MedievalStasis: For about two thousand years, Pern was medieval with very little structural/social change. Justified by the fact that most of the colonists' technology was lost or worn out after two hundred years, and the whole "Thread trying to eat everything organic" situation made them more concerned about ''surviving'' rather than technological advancement. When this incentive is removed after ''All the Weyrs of Pern'', they begin to reclaim their lost technology with the help of the records and instruction provided by AIVAS.
** Also justified because Pern was settled by SpaceAmish who wanted to get away from technology and develop a more agrarian society, though they didn't want to decay quite as far, hard or fast as they did.
* MercyKill: Sometimes administered to badly injured Thread victims, by means of a lethal dose of "fellis", an herbal sedative.
* MetalPoorPlanet: The planet Pern has limited amounts of available metal, meaning it is of little interest to the large corporations that normally colonize worlds, but perfect for a group of people who want to create a [[SpaceAmish low-tech agrarian society]].
* MileHighClub: Dragons (and fire lizards) mate in the air, with the female taking off and males chasing her into the sky. The winner in queen flights is typically the male with enough stamina to keep up with her, which is why the smaller dragons don't bother competing.
* MrFanservice: Robinton, in-universe. In one scene Piemur is torn between amusement and frustration that his elderly mentor distracts all the ladies from him.
* MultipleTailedBeast: Pernese dragons have forked tails.
* TheNapoleon: Lessa
* NeverTheSelvesShallMeet: This seems to change at different points in the series. At the start, Jaxom coming close to himself causes incredible exhaustion, and Lessa overrunning herself three times at the same temporal point results in swaying and mumbling gibberish. This might be a problem exclusive to dragonriders - being the result of their telepathic bond with their dragon effectively becoming duplicated - as a number of non-dragonriders in Todd [=McCaffrey's=] books avoid this trauma when travelling through time, and Masterharper Zist even talks to his past self outright with no issue.
* NewPowersAsThePlotDemands: In ''The Skies of Pern'', the dragons "discover" their powers of [[MindOverMatter telekinesis]]. This is not entirely pulled out of thin air; in ''All The Weyrs of Pern'', AIVAS said that dragons should be able to do it, and it was covertly confirmed when the dragons were able to carry huge starship engine assemblies that, despite the lower gravity of the Red Star, they should not have been able to support, even ''en masse''. In a variation of the MagicFeather trick, AIVAS told no one that truth except Jaxom (and by proxy, Ruth).
* NoBiochemicalBarriers: Averted, as the Pernese settlers were armed with advance surveys and the science to clearly identify which local lifeforms were good to eat and which weren't, and they wouldn't have tried to settle Pern in the first place if the atmosphere wasn't breathable, etc. They also brought a lot of Earth lifeforms and conducted extensive experiments to determine compatibility, modifying genes where necessary -- incidentally, this is why there are no bees or turkeys on Pern.
** Or coffee. In ''Dragonsdawn'' it's mentioned that for some unknown reason coffee had proven unable to be adapted to growth on any planet other than Earth. On Pern, this leads to the development of a substitute made from the ground bark of a native tree, a drink that becomes known as ''klah''.
* NoBloodTies: Although bloodlines are acknowledged, it is common practice among Weyrfolk to foster their children to avoid maternal or paternal attachments; this lessens the trauma when riders are lost fighting Thread.
* NoMereWindmill: Type B. When F'lar (and his father before him) warns the political leaders of the soon-to-begin Ninth Pass about the return of Thread, they refuse to believe him, until it starts dropping on their heads of course.
* NotGoodWithPeople
* OldRetainer: Rannelly, for Kylara.
* OnlyTheChosenMayRide: The titular Dragonriders of Pern are chosen this way. The dragons form an empathic bond with a particular human, who is then shanghaied into the life of a dragonrider. The bond is so strong that riders of dragons who mate often wind up having sex as well whether they meant to or not.
* OurDragonsAreDifferent: Another TropeCodifier.
* OutgrownSuchSillySuperstitions: The Pernese colonists were specifically selected for their lack of susceptibility to religion. Throughout the entire series, God is not mentioned once. On the other hand, it's mentioned in ''Dragonsdawn'' that much of the Judeo-Christian Bible consists of plain common sense that the Pernese hold to "without any trace of fanatical devotion," and Aivas considers the Bible to be "the greatest book ever written by mankind."
* ParentalAbandonment: Lessa (parents murdered by Fax), Jaxom (mother died in childbirth, father was the aforementioned and unlamented Fax), and others.
* ParentalIncest: Stev Kimmer, in ''Rescue Run'', has sex with his stepdaughters, and possibly his biological daughters.
* ParentalMarriageVeto: Toric, though a brother and not a father, tries to enact one of these on his sister Sharra and Jaxom. It fails miserably when Jaxom makes it clear that they aren't taking no for an answer and that, as a dragonrider, he can and will come for her anywhere on Pern.
* {{Patronymic}}: Somewhat turned on its head. Many (though not all) Pernese children, particularly those born in the Weyrs, are given names which are meshes of the names of their father and mother. For example, F'lar's birth name was Fallarnon, after his father Falloner and mother Larna; his half-brother F'nor was Famanoran, after father Falloner and mother Manora. Sometimes other people's names are used in the convention, such as Menolly and Sebell's youngest son Robse (the first part of his name being in honor of Robinton).
* {{Pride}}: Lessa, full stop. She is completely willing to let dragons battle with each other, because she feels insulted.
* ThePlague: The plot of ''Moreta'' and ''Nerilka's Story'', as well as ''Dragonsblood''.
* PlanetaryRomance
* PlotHole: In the second part of ''Dragon's Fire'', Moran decides to secretly follow [[EvilOrphan Tenim]] after he abandons their group. Several chapters later, Moran is shown caring for the sick in a completely different location without any information as to how he got there.
* PoorCommunicationKills: Early on, Lessa and F'lar spend a lot of time not telling each other things. They get better.
* POVSequel: ''Moreta'' and ''Nerilka's Story''. There's also a multitude of books that take place around the beginning of the Third Pass and near the middle of the Ninth that play with this; while they show many of the same events from different perspectives, they also have a tendency to cover time further back or forward than each other instead of taking place entirely simultaneously like a true POVSequel.
* PowerIncontinence: Aramina leaves Benden Weyr because she can hear any and all dragons and can't shut them out.
* ProperlyParanoid: F'lar, about Thread.
* PsychicPowers: It is said that all dragonriders are at least slightly telepathic to the extent required to communicate with their dragons. The dragons themselves, as well as their smaller cousins the fire lizards, are telepathic with each other and their riders. Lessa is a rare example of someone with the ability to affect other humans, but this was quietly downplayed as a plot point after being introduced.
* PunctuationShaker:
** All male Weyr riders have their names ritually contracted after Impression, to make shouted communication easier during Threadfall. For example, F'lar was born Fallarnon. Losing your dragon (and surviving) sometimes revokes this, as Lytol was L'tol when he was a rider, but went back to a non-hyphenated name (though not the same as his original name) after his dragon died.
** Some humor comes from the difficulty in figuring out what Jaxom's rider name ought to be after he accidentally impresses Ruth; the situation is resolved by allowing him the unique privilege of being a dragonrider ''and'' Lord Holder.
* RandomTeleportation: One of the obvious risks of a poorly visualized trip ''between''.
* RapeAndSwitch: Anne [=McCaffrey=] had an infamous opinion that anal rape releases hormones that turn men permanently gay; according to WordOfGod this would canonically apply to male greenriders if one who wasn't already gay was chosen. This is never stated in the text, and as it makes very little sense to most people who are not Anne [=McCaffery=], it's usually ignored.
** As of ''Sky Dragons'', it's been officially retconned.
* RealMenHateAffection: Petiron's attitude toward his son Robinton is a good example. Whether Petiron just didn't know how to show affection, or felt threatened by the fact that his son was much more talented than Petiron himself was, Robinton as a young boy is constantly looking for affection his father never offers. The situation improves as Robinton becomes an adult and is named [=MasterHarper=], upon which Petiron steps down as [=MasterComposer=] and exiles himself to a minor holding to allow Robinton to become a leader in his own right. Later on, Petiron redeems himself when he discovers Menolly's talents (and sees her father's attempts to squelch her) and sends her to Robinton for mentoring.
* ReasonableAuthorityFigure:
** F'Lar proves himself to one one of the wisest and influential men on Pern by his handling of crises in the first three books.
** Robinton shows himself willing to listen to any issue within his Hall, punish those who break the rules regardless of rank or station, and admit to his own follies.
** Harper Journeyman Rokayas of the Drum Heights [[spoiler:was the only one who saw the shades of abuse Piemur was suffering but with no admittance from Piemur, his hands were tied. When Piemur fell down on greased steps, he got Piemur to help, and told Robinton and Menolly everything he suspected happened.]]
* TheReasonYouSuckSpeech: Robinton delivers three of these: to the Lord Holders in ''Dragonflight'' and ''Dragonquest'', and to the Abominators in ''All The Weyrs of Pern.''
* ReassignmentBackfire: A subversion occurs with Petiron, who was assigned to a backwater fishing Hold that just happened to beget one of the greatest musical prodigies in Pernese history, Menolly. Then it turns out that he was assigned at his own request, and that his son is the current Masterharper, Robinton.
* RebelliousPrincess: Nerilka, a Lord Holder's daughter, refuses to obey her JerkAss father's commands and becomes a nurse during the plague.
** Thella even moreso, an extremely negative example.
* RefusalOfTheCall: Lessa nearly refused F'lar's offer to become weyrwoman.
* RetCon: A lot of plot elements got modified without comment between novels.
** Some characters undergo spontaneous name changes between ''Dragonflight'' and ''Dragonquest'': T'ton to T'ron, for example.
** Lessa's PsychicPowers are explicit and quite strong in ''Dragonflight'', with F'lar considering them unusual in their strength but hardly surprising. Later books downplay this to the point where it's almost ignored, leaving only the ability to talk to more than one's own dragon as a defined power.
*** At least, up until ''Dragonheart'', when the PsychicPowers are said to be a skill possessed by strong-willed Weyrwomen as a side-effect of their bond with their dragon.
** In ''Dragonquest'', there's a specific reference to fire lizards "eating Thread". Granted that the person making the claim, Kylara, is mentally unstable and an unabashed liar, in later books the idea seems to be dropped in favor of fire lizards flaming thread like their larger cousins. There's also a mention in ''Dragonsinger'', which parallels Dragonquest in the Harper Hall trilogy: Menolly's fire lizards, while shut inside the Harperhall refectory during Threadfall, get very excited and are described as making the motions of "licking Thread from the air."
* RocksFallEveryoneDies: Todd [=McCaffrey's=] books tend to end with the antagonist (and/or most of his cohorts) getting slaughtered.
* RefusalOfTheCall: Aramina is selected as a candidate for a queen dragon and considered guaranteed to Impress one. After Jayge rescues her from Thella, she refuses to go back. Jayge finds this unfathomable until she explains that she's incapable of tuning out the dragons' constant chatter.
* SapientCetaceans: The original settlers brought intellectually enhanced dolphins with them, but lost contact in the exodus to the Northern Continent. In the aptly titled ''Dolphins of Pern'', Jayge and Aramina's son Readis becomes the first to reestablish contact.
* ScareDare: Robinton has to spend the night in an abandoned Weyr as an unofficial rite of passage among Harpers.
* ScienceFantasy: One of the classic unclassifiables. [[WordOfGod McCaffrey]] has always contended that her books are Science Fiction, not Fantasy. Her reasoning is that everything in the books is (in her estimation, at least), scientifically backed.
* ScienceIsBad: The Pern colony was founded on the principle of rejecting reliance on high technology to solve problems. Millennia later, this sentiment bestirs itself in the form of a violently Luddite group that attempts to sabotage anything related to AIVAS. AIVAS' discovery, however, is what eventually leads to the final end of Thread on Pern.
* ScienceMarchesOn: Pern was available for colonization due to its lack of resources, categorized as metals and fuels, which would in theory preclude an industrialized society. This motivated the creation of a biologic thread fighting solution in the Dragons. 40 years after the first books were published biofuels, high strength carbon composites, bio-engineered fibers and all manner of other scientific advances would make a highly industrialized society on a traditionally "resource poor" world not only possible, but also environmentally sustainable.
* SciFiWritersHaveNoSenseOfScale: Distances seem to change at the plot's convenience, and either dragons in the Ninth Pass are ludicrously huge (bronzes and golds being much bigger than ''blue whales'') or someone said "meters" when they meant "feet."
* SeriesContinuityError: Quite a few;
** The year number got muddled when ''The White Dragon'' was published (15PP when it should really have been 13PP), and subsequent prequel books made this problem impossible to fix without messing up the chronology of the stories. The two main side-effects of this is that it means F'lessan somehow became a Candidate while two years underage, and Mirrim's Path took ''four years'' instead of two to become fully mature.
** Character names - both major and minor - frequently end up changing between books. The worst example of this happening is probably that Lord Larad's wife's name strangely changes from Dulsay to Janissary in ''All the Weyrs of Pern'' and back to Dulsay again in ''The Skies of Pern''.
*** In a few instances, a dead character has ended up appearing in a book that takes place after their death. Lord Oterel offers his support to young Readis in ''The Dolphins of Pern'', despite a major part of the previous book dealing with people choosing his successor after his death.
* SexByProxy: Thanks to the mental link between dragons and riders.
* ShoulderSizedDragon: The fire-lizards.
* SpaceAmish
* TheSpymaster: [=MasterHarpers=] seem to be relatively benign examples. In addition to their teaching duties, almost all harpers sent abroad to teach also report on the general mood of the holds they're assigned to. In addition the Hall seems to produce one or two overly curious and quick-witted apprentices each generation. They eventually become one step below active spies, sent wherever their particular talents can be used and reporting directly to the [=MasterHarper=]. As of the Ninth Pass their chief agents seem to be Nip, Tuck[[spoiler:/Traller, and Piemur]].
* StableTimeLoop: All time travel in series either results in one of these, or is the result of one of these.
* StarvingArtist: Iantine, in ''Dragonseye'', is reduced to this on account of the bad weather and political corruption he encounters in Bitra.
* SuccessionCrisis: A few of them:
** A minor one in ''Dragonflight'', where Lessa, Fax and F'lar are all intriguing over who has the right to rule Ruatha Hold. Lessa is the (unknown) dispossessed rightful heir to Ruatha, Fax is the usurper, and F'lar unseats Fax, but in favor of Fax' son Jaxom rather than in Lessa's favor. In F'lar's defense, he didn't know at the time that Lessa was farther up the line of succession. No-one except Lessa did.
** In the Harper Hall trilogy, Meron deliberately avoids naming a successor as he's dying (he wants a bloody succession fight to spite everyone), until Robinton uses reverse psychology to get him to select the son he ''thinks'' nobody wants.
** In ''All The Weyrs Of Pern'', Oterel's death requires the other lords to vote on his successor. Thanks to petty political bickering, they have a lot of trouble getting consensus on the one son who isn't blatantly an idiot or wastrel.
* {{Synchronization}}: Riders and their dragons.
* TeacherStudentRomance: Robinton and Menolly, but an unusual example. They know they're fond of each other, and after [[spoiler: his heart attack]] they both admit that said feelings are not 100% platonic. However, she's involved with someone else, and he is very much in favor of that relationship. So other than that brief recognition and pang, his relationship to her remains teacher / surrogate family.
* TechnicianVersusPerformer: Petiron vs. Robinton/Menolly.
* TechnologyMarchesOn: Millennia in the future of our day, the world of Pern is finally saved with ''DOS''. An AI version of DOS, but still...
* TeleFrag: One of the risks of going ''between'' with a poorly visualized destination.
* TeleportersAndTransporters: Dragons and fire lizards are innate teleporters, and can bring passengers with them. This is accomplished by making use of AnotherDimension, colloquially termed ''between'', which lacks all sensation and is killingly cold. It is later discovered that they can teleport across interplanetary distances as well as through time, but the amount of time spent ''between'' increases with distance travelled (temporally and spacially). There's no oxygen ''between,'' which puts a very definite limit on hops through space and/or time (until the Pernese rediscover their ancestors' technology and gain access to space suits allowing them to carry an air supply ''between'').
* TimeTravel: An innate, if rarely used, ability of dragons and fire lizards. When travelling ''between'', one must visualize one's destination accurately; apparently, this also includes time references. For example, if you visualize your destination in the morning, that's when you'll get there. It's even got a colloquial term in the story: "timing it".
* TookALevelInJerkass: Most notably with T'ton/T'ron and Mardra between ''Dragonflight'' and ''Dragonquest''. Toric arguably qualifies as well.
* {{Uncoffee}}: ''Klah'', which is made from tree bark, started out as the colonists' ersatz coffee, and ended up filling the same cultural niche. It's explicitly stated to contain stimulants and taste exactly like hazelnut coffee. ''Dragonsdawn'' explains that coffee and tea plants can't flourish on Pernese soil, so the colonists looked elsewhere for their caffeine needs.
* UnusualEuphemism: "Shards", "Shells", "Scorch it", and various other oaths are employed by Weyrfolk, mostly relating to dragons or Thread. Makes sense, as there's no religion on Pern, but respect for the dragonriders as saviors from Thread kind of fills a similar cultural role. "Fardling" is their variant of the "F" word. There's an index specifically for these in the early novels.
* WhatHappenedToTheMouse:
** Mardra abruptly vanishes halfway through ''The Renegades of Pern'' and is never mentioned again.
* WhatMeasureIsANonCute: Dragons? Gaze up in awe and go "whoa, cool!" Fire lizards? Gather round and {{Squee}} over the pretties. Watch-whers? Chained to a wall as barely tolerated "watchdogs". Although they are shown as capable of friendship and loyalty, and their distant kinship to dragons is mentioned from book one, it is not until the {{prequel}}s that their origin is revealed -- partially failed experiments in creating a second type of dragon.
* WildCard: Toric of Southern, in particular, seems to go back and forth between grudging ally and scheming antagonist. For the most part he's an over-ambitious control freak who, for various reasons, dislikes most of the series' protagonists and enjoys inconveniencing them, but [[NeutralSelfish doesn't really cross the line into actual villainy]]; he can even be occasionally helpful. In the later books, however, he becomes more and more obsessive and secretive, and his agenda more overtly sinister.
* WritersCannotDoMath: Several of the Ninth Pass books are a bit inconsistent with their events and what year they took place in. For example, ''The White Dragon'' is repeatedly said to take place five years after ''Dragonquest'', yet the date given - 15PP - is actually seven years afterwards. In one particularly jarring example, Readis is said to be seven at the beginning of ''The Dolphins of Pern'', despite the fact that his parents only met each other five years prior.
* YouAlreadyChangedThePast: There are no {{Temporal Paradox}}es in this universe. If you use TimeTravel to go backwards, you had already been there and [[TimeTravelTenseTrouble had done what you did]]. In fact, several characters use this type of foreknowledge specifically to plan their trips, setting up a StableTimeLoop.
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