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dc.contributor.authorConde, Dalia A.
dc.contributor.authorStaerk, Johanna
dc.contributor.authorColchero, Fernando
dc.contributor.authorda Silva, Rita
dc.contributor.authorSchöley, Jonas
dc.contributor.authorBaden, H. Maria
dc.contributor.authorJouvet, Lionel
dc.contributor.authorFa, John E.
dc.contributor.authorSyed, Hassan
dc.contributor.authorJongejans, Eelke
dc.contributor.authorMeiri, Shai
dc.contributor.authorGaillard, Jean-Michel
dc.contributor.authorChamberlain, Scott
dc.contributor.authorWilcken, Jonathan
dc.contributor.authorJones, Owen R.
dc.contributor.authorDahlgren, Johan P.
dc.contributor.authorSteiner, Ulrich K.
dc.contributor.authorBland, Lucie M.
dc.contributor.authorGomez-Mestre, Ivan
dc.contributor.authorLebreton, Jean-Dominique
dc.contributor.authorVargas, Jaime González
dc.contributor.authorFlesness, Nate
dc.contributor.authorCanudas-Romo, Vladimir
dc.contributor.authorSalguero-Gómez, Roberto
dc.contributor.authorByers, Onnie
dc.contributor.authorBerg, Thomas Bjørneboe
dc.contributor.authorScheuerlein, Alexander
dc.contributor.authorDevillard, Sébastien
dc.contributor.authorSchigel, Dmitry S.
dc.contributor.authorRyder, Oliver A.
dc.contributor.authorPossingham, Hugh P.
dc.contributor.authorBaudisch, Annette
dc.contributor.authorVaupel, James W.
dc.date.accessioned2020-04-29T20:47:34Z
dc.date.available2020-04-29T20:47:34Z
dc.date.issued2019
dc.identifier0027-8424, 1091-6490
dc.identifier.doi10.1073/pnas.1816367116
dc.identifier.urihttp://hdl.handle.net/20.500.12634/37
dc.description.abstractBiodiversity loss is a major challenge. Over the past century, the average rate of vertebrate extinction has been about 100-fold higher than the estimated background rate and population declines continue to increase globally. Birth and death rates determine the pace of population increase or decline, thus driving the expansion or extinction of a species. Design of species conservation policies hence depends on demographic data (e.g., for extinction risk assessments or estimation of harvesting quotas). However, an overview of the accessible data, even for better known taxa, is lacking. Here, we present the Demographic Species Knowledge Index, which classifies the available information for 32,144 (97%) of extant described mammals, birds, reptiles, and amphibians. We show that only 1.3% of the tetrapod species have comprehensive information on birth and death rates. We found no demographic measures, not even crude ones such as maximum life span or typical litter/clutch size, for 65% of threatened tetrapods. More field studies are needed; however, some progress can be made by digitalizing existing knowledge, by imputing data from related species with similar life histories, and by using information from captive populations. We show that data from zoos and aquariums in the Species360 network can significantly improve knowledge for an almost eightfold gain. Assessing the landscape of limited demographic knowledge is essential to prioritize ways to fill data gaps. Such information is urgently needed to implement management strategies to conserve at-risk taxa and to discover new unifying concepts and evolutionary relationships across thousands of tetrapod species.
dc.language.isoen
dc.relation.urlhttps://www.pnas.org/content/early/2019/04/18/1816367116
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectFERTILITY
dc.subjectEXTINCTION
dc.subjectBIOGEOGRAPHY
dc.subjectBIODIVERSITY
dc.subjectCONSERVATION
dc.subjectENVIRONMENTAL POLICIES
dc.titleData gaps and opportunities for comparative and conservation biology
dc.typeArticle
dc.source.journaltitleProceedings of the National Academy of Sciences
dc.source.beginpage9658
dc.source.endpage9664
refterms.dateFOA2020-04-29T21:13:05Z
html.description.abstractBiodiversity loss is a major challenge. Over the past century, the average rate of vertebrate extinction has been about 100-fold higher than the estimated background rate and population declines continue to increase globally. Birth and death rates determine the pace of population increase or decline, thus driving the expansion or extinction of a species. Design of species conservation policies hence depends on demographic data (e.g., for extinction risk assessments or estimation of harvesting quotas). However, an overview of the accessible data, even for better known taxa, is lacking. Here, we present the Demographic Species Knowledge Index, which classifies the available information for 32,144 (97%) of extant described mammals, birds, reptiles, and amphibians. We show that only 1.3% of the tetrapod species have comprehensive information on birth and death rates. We found no demographic measures, not even crude ones such as maximum life span or typical litter/clutch size, for 65% of threatened tetrapods. More field studies are needed; however, some progress can be made by digitalizing existing knowledge, by imputing data from related species with similar life histories, and by using information from captive populations. We show that data from zoos and aquariums in the Species360 network can significantly improve knowledge for an almost eightfold gain. Assessing the landscape of limited demographic knowledge is essential to prioritize ways to fill data gaps. Such information is urgently needed to implement management strategies to conserve at-risk taxa and to discover new unifying concepts and evolutionary relationships across thousands of tetrapod species.


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