Diatoms of North America
Sam Rushforth
Taxon Contributor
Dean (retired) School of Science/Health, Utah Valley University
We need our best minds solving environmental problems.
Most recently, I have been looking at the influence of terrestrial disturbance events on streams, lakes and reservoirs. I am also interested in long-term changes in algal populations of reservoirs under different nutrient loading regimes. The impact of humans on aquatic ecosystems is also an area of research I am currently pursuing. Lastly, I have had a long-term interest in diatom floristics and ecology.
Demographics of the west are changing. This has lead to changes in public land policies. These changes are controversial and interesting. We will see major changes in the way our western public lands and waters are managed and accessed during the next few years. I am interested in understanding these issues. I am particularly interested in the interface between public access to the decision-making process and that of the U.S. and State Governments.
Species contributed
Navicula antonii | Navicula capitatoradiata | Navicula trivialis
Species reviewed
Achnanthes felinophila | Achnanthes longboardia | Achnanthes mauiensis | Achnanthes tumescens | Achnanthes undulorostrata | Achnanthidium druartii | Achnanthidium eutrophilum | Achnanthidium minutissimum | Adlafia detenta | Aulacoseira nygaardii | Aulacoseira pusilla | Bacillaria paxillifera | Brebissonia lanceolata | Caloneis bacillum | Caloneis silicula | Cavinula vincentii | Chamaepinnularia soehrensis | Craticula subminuscula | Ctenophora pulchella | Cymbopleura anglica | Cymbopleura angustata | Cymbopleura apiculata | Cymbopleura austriaca | Cymbopleura subcuspidata | Diatoma moniliformis | Diatoma vulgaris | Discostella stelligera | Encyonopsis subminuta | Eunotia bilii | Eunotia kociolekii | Eunotia papilioforma | Eunotia richbuttensis | Fragilaria crotonensis | Geissleria kriegeri | Geissleria lateropunctata | Geissleria punctifera | Gomphoneis eriense var. variabilis | Gomphoneis herculeana | Gomphoneis herculeana var. lowei | Gomphoneis mammilla | Gomphoneis minuta | Gomphonella olivacea | Gomphonella pseudookunoi | Gomphonema pusillum | Halamphora oligotraphenta | Halamphora thumensis | Iconella hibernica | Kobayasiella okadae | Melosira varians | Meridion circulare var. constrictum | Navicula lanceolata | Navicula leptostriata | Navicula recens | Navicula subrostellata | Navicula tripunctata | Navicula venerablis | Navicula veneta | Nupela impexiformis | Odontidium mesodon | Pinnularia marchica | Pinnularia microstauron | Pinnularia nodosa | Pinnularia nodosa var. percapitata | Pinnularia parvulissima | Pinnularia saprophila | Platessa conspicua | Pleurosira laevis | Pseudostaurosira americana | Pseudostaurosira brevistriata | Punctastriata mimetica | Reimeria sinuata | Rexlowea navicularis | Rhoicosphenia abbreviata | Rossithidium petersenii | Sellaphora californica | Sellaphora hohnii | Sellaphora meridionalis | Sellaphora pulchra | Sellaphora rexii | Stauroneis absaroka | Staurosirella pinnata | Surirella amphioxys | Surirella angusta | Surirella pinnata | Surirella suecica | Terpsinoe musica | Thalassiosira lacustris | Thalassiosira weissflogii | Tryblionella apiculata
Genera reviewed
Acanthoceras | Achnanthes | Achnanthidium | Actinella | Actinocyclus | Adlafia | Afrocymbella | Amphipleura | Amphorotia | Aneumastus | Asterionella | Aulacoseira | Bacillaria | Biremis | Brachysira | Brevisira | Caloneis | Campylodiscus | Capartogramma | Cavinula | Chaetoceros | Chamaepinnularia | Cocconeis | Cosmioneis | Craticula | Ctenophora | Cyclostephanos | Cylindrotheca | Cymatopleura | Cymbellonitzschia | Cymbopleura | Decussata | Delicatophycus | Denticula | Diadesmis | Diatoma | Diatomella | Discostella | Distrionella | Ellerbeckia | Eolimna | Eucocconeis | Fallacia | Fistulifera | Fragilaria | Fragilariforma | Frustulia | Geissleria | Gomphoneis | Gyrosigma | Hannaea | Hippodonta | Hydrosera | Hygropetra | Kobayasiella | Lemnicola | Luticola | Mastogloia | Mayamaea | Melosira | Meridion | Microcostatus | Muelleria | Navicula | Neidium | Nitzschia | Nupela | Orthoseira | Pinnularia | Placoneis | Plagiotropis | Playaensis | Pleurosira | Pliocaenicus | Pseudostaurosira | Pseudostaurosiropsis | Puncticulata | Reimeria | Rhoicosphenia