Early colonization patterns of diatoms across time and among three freshwater lakes.

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dc.contributor.author Beyer, Carrie en_US
dc.contributor.author Deering, Jacob en_US
dc.contributor.author Giordimaina, Alicia en_US
dc.contributor.author McCammack, Erin en_US
dc.contributor.author Wiley, Anne en_US
dc.coverage.spatial Douglas Lake en_US
dc.coverage.spatial Munro Lake en_US
dc.coverage.spatial Lancaster Lake en_US
dc.date.accessioned 2007-06-14T23:31:32Z
dc.date.available 2007-06-14T23:31:32Z
dc.date.issued 2005 en_US
dc.identifier.uri http://hdl.handle.net/2027.42/55042
dc.description.abstract Diatoms (Bacillariophyta) form stable colonies on artificial substrates in less than 21 days (Cairns et al., 1983), but the factors that affect such colonization have not been rigorously studied. In our study we explored different factors of diatom colonization in three different-sized freshwater lakes--Douglas (large), Munro (medium), and Lancaster (small). We used the MacArthur-Wilson equilibrium theory of island biogeography (1963) to explain our findings. This theory predicts that species should increase in number and diversity over time until an equilibrium is reached between colonization and extinction rates of species. This theory also predicts that larger islands should be more diverse and rich than smaller islands. In all three lakes, we found that species diversity and richness tended to increase on day 6, peak on day 15, and remain stable through day 21. Doulgas also generally had higher species richness and diversity than Munro and Lancaster. These results support predictions made by island theory. With regard to species in relative high abundance (>5%), Douglas and Munro showed a trend of succession from planktonic to 'attaching' and motile diatoms. In contrast, euplankton remained abundant across the 21-day period in Lancaster, and periphyton species colonized sooner than in the other two lakes. Lancaster's distinct littoral zone and smaler species pool may account for these differences. In looking at number of species from 1975 to 2005, Douglas had more types of genera and species than Munro and Lancaster. This result further supports island theory since species richness increased relative to island size. Finally, Lancaster was less similar over the 30-year period than Douglas and Munro, supporting the idea that smaller islands tend to change more than larger lakes. en_US
dc.format.extent 407450 bytes
dc.format.extent 3144 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.subject Phycology en_US
dc.subject.other ALGAE en_US
dc.subject.other DIATOMS en_US
dc.subject.other COMMUNITIES en_US
dc.subject.other COLONIZATION en_US
dc.subject.other ARTIFICIAL en_US
dc.subject.other SUBSTRATES en_US
dc.subject.other ISLANDS en_US
dc.subject.other HABITAT en_US
dc.subject.other HISTORICAL en_US
dc.subject.other DATA en_US
dc.subject.other CENSUS en_US
dc.title Early colonization patterns of diatoms across time and among three freshwater lakes. en_US
dc.type Working Paper en_US
dc.subject.hlbsecondlevel Natural Resource and Environment en_US
dc.subject.hlbtoplevel Science en_US
dc.contributor.affiliationum Biological Station, University of Michigan en_US
dc.contributor.affiliationumcampus Ann Arbor en_US
dc.description.bitstreamurl http://deepblue.lib.umich.edu/bitstream/2027.42/55042/1/3486.pdf en_US
dc.description.filedescription Description of 3486.pdf : Access restricted to on-site users at the U-M Biological Station. en_US
dc.owningcollname Biological Station, University of Michigan (UMBS)
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