PMID- 33171740 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240330 IS - 2076-2607 (Print) IS - 2076-2607 (Electronic) IS - 2076-2607 (Linking) VI - 8 IP - 11 DP - 2020 Nov 7 TI - Microbial Species-Area Relationships in Antarctic Cryoconite Holes Depend on Productivity. LID - 10.3390/microorganisms8111747 [doi] LID - 1747 AB - The island species-area relationship (ISAR) is a positive association between the number of species and the area of an isolated, island-like habitat. ISARs are ubiquitous across domains of life, yet the processes generating ISARs remain poorly understood, particularly for microbes. Larger and more productive islands are hypothesized to have more species because they support larger populations of each species and thus reduce the probability of stochastic extinctions in small population sizes. Here, we disentangled the effects of "island" size and productivity on the ISAR of Antarctic cryoconite holes. We compared the species richness of bacteria and microbial eukaryotes on two glaciers that differ in their productivity across varying hole sizes. We found that cryoconite holes on the more productive Canada Glacier gained more species with increasing hole area than holes on the less productive Taylor Glacier. Within each glacier, neither productivity nor community evenness explained additional variation in the ISAR. Our results are, therefore, consistent with productivity shaping microbial ISARs at broad scales. More comparisons of microbial ISARs across environments with limited confounding factors, such as cryoconite holes, and experimental manipulations within these systems will further contribute to our understanding of the processes shaping microbial biogeography. FAU - Sommers, Pacifica AU - Sommers P AD - Department of Ecology and Evolutionary Biology, University of Colorado Boulder, Boulder, CO 80309, USA. FAU - Porazinska, Dorota L AU - Porazinska DL AUID- ORCID: 0000-0002-0493-9926 AD - Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611, USA. FAU - Darcy, John L AU - Darcy JL AD - Division of Biomedical Informatics and Personalized Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA. FAU - Gendron, Eli M S AU - Gendron EMS AUID- ORCID: 0000-0002-2552-4658 AD - Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611, USA. FAU - Vimercati, Lara AU - Vimercati L AUID- ORCID: 0000-0001-8228-7786 AD - Department of Ecology and Evolutionary Biology, University of Colorado Boulder, Boulder, CO 80309, USA. FAU - Solon, Adam J AU - Solon AJ AD - Department of Ecology and Evolutionary Biology, University of Colorado Boulder, Boulder, CO 80309, USA. FAU - Schmidt, Steven K AU - Schmidt SK AUID- ORCID: 0000-0002-9175-2085 AD - Department of Ecology and Evolutionary Biology, University of Colorado Boulder, Boulder, CO 80309, USA. LA - eng GR - 1443578/National Science Foundation/ PT - Journal Article DEP - 20201107 PL - Switzerland TA - Microorganisms JT - Microorganisms JID - 101625893 PMC - PMC7694949 OTO - NOTNLM OT - Antarctica OT - ISAR OT - bacteria OT - biogeography OT - cryoconite OT - eukaryotes OT - glacier OT - species-area relationship COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2020/11/12 06:00 MHDA- 2020/11/12 06:01 PMCR- 2020/11/07 CRDT- 2020/11/11 01:01 PHST- 2020/10/15 00:00 [received] PHST- 2020/10/31 00:00 [revised] PHST- 2020/11/02 00:00 [accepted] PHST- 2020/11/11 01:01 [entrez] PHST- 2020/11/12 06:00 [pubmed] PHST- 2020/11/12 06:01 [medline] PHST- 2020/11/07 00:00 [pmc-release] AID - microorganisms8111747 [pii] AID - microorganisms-08-01747 [pii] AID - 10.3390/microorganisms8111747 [doi] PST - epublish SO - Microorganisms. 2020 Nov 7;8(11):1747. doi: 10.3390/microorganisms8111747.