Observation: Colonies: Notes on colony formation in Diatoma tenuis and Diatoma vulgaris

Observation: Colonies: Colony formation in Asterionella formosa

Observation: Colonies: Introductory words and pictures of chain-forming diatoms: Image galleries of Diatoma tenuis, Diatoma ehrenbergii and Asterionella formosa added.

Observation: Trajectories: Form of the paths: Video on tube-dwelling Frustulia vulgaris added

Observation: Colonies: Introductory words and pictures of chain-forming diatoms: Image gallery of Diatoma vulgaris added.

Observation: Colonies: Size of the diatoms in a chain-like colony II - A surprising relationship between size sequence and dragon curve

Observation: Colonies: Introductory words and pictures of chain-forming diatoms: SEM images of Diatoma and Bacillaria added

References: Articles relating to the homepage

Observation: Colonies: ‘Size of the diatoms in a chain-like colony I’ Note

Observation: Colonies: Introductory words and pictures of chain-forming diatoms: Example Bacillaria

Culturing: Purpose of cultivation: Video on the benefits of cultivation (Bacillaria paxillifera)

Observation: Trajectories: Form of the paths: Constraints for colonies

Culturing: Challenges: Image on the sexual reproduction of Stauroneis sp.

Observation: Devices for observation: upright microscope

Observation: Colonies: ‘Size of the diatoms in a chain-like colony I’ is divided into two parts. The extended part ‘Introductory words and pictures of chain-forming diatoms’ is placed in the beginning.

Observation: Another example of contamination with amoebae (Meridion circulare)

Observation: Trajectories: The movement of Eunotia sp.: Note on the observed Eunotia species

Observation: Movement in EPS matrix: Notes on flake formation and movement in flakes
(The menu item "Movement in EPS matrix" has been added.

Observation: Sexual reproduction: Further note

Observation: Trajectories: Change in the trajectories of Cymatopleura solea as a result of cell size reduction

Culturing: Challenges: Malformations in Cymatopleura solea

Observation: Trajectories: The movement of Eunotia sp.

Observation: Colonies: Size of the diatoms in a chain-like colony I: Images of further colonial diatoms

Observation: Colonies: Size of the diatoms in a chain-like colony I: two videos and text about difficulties in determining the size sequence of Eunotia sp.

Observation: Colonies: Size of the diatoms in a chain-like colony III: additional video and text on the development of an Eunotia colony

Observation: Colonies: Cymbella on jelly stalks: additional pictures and a video to the form of colonies

Observation: Movement of diatoms in and on biofilms: Video and text on movement within the biofilm

Observation: Sexual reproduction: Image of gametes fusion and of Automixis

Privacy statement and further legal notices

Observation: Sexual reproduction in Cymbella (allomixis): Video on the growth of auxospores

Observation: Sexual reproduction: Automixis in Cymbella

Observation: Movement on the water surface: Pinnularia sp. on the water surface

Culturing: Identification of genus and species: Annotation and pictures of Cymatopleura elliptica after annealing

Observation: Sexual reproduction: Note

Culturing: Challenges:
Examples of malformations in Surirella und Nitzschia

Culturing: Creating cultures and care:
Examples of contamination with epiphytic diatoms and amoebae

Observation: Horizontal view: Method of observation (Extension of the example)

Observation: Horizontal view: Stauroneis sp. from a horizontal view

Observation: Trajectories: Curvature of the trajectories by the example of Surirella biseriata

Observation: Colonies:

• Cymbella on jelly stalks
• directly attached Cymbella I
• directly attached Cymbella II

Culturing: Auxiliaries for cultivation (Notes on the microscope)

Observation: Devices for observation (Notes on the microscope)

Culturing: Example of a difficult cultivation (Gyrosigma)

Observation: Colonies: Size of the diatoms in a chain-like colony II

The previous post about chain-like colonies has been extended and split into two pages.

Observation: Colonies: Size of the diatoms in a chain-like colony

Observation: Movement on the water surface:

• Cymatopleura solea on the water surface
• Nitzschia sigmoidea on the water surface
• Movement patterns of floating Nitzschia sigmoidea
• Examples of floating Nitzschia sigmoidea

Observation: Movement of diatoms in and on biofilms

Observation: Trajectories:

• Curvature of the trajectories by the example of Navicula
• Curvature of the trajectories by the example of Cymbella

Welcome

Diatoms:

• What are Diatoms?
• Introduction to motility
• References

Culturing:

• Purpose of cultivation
• Forms of cultures
• Creating cultures and care
• Nutrient solution
• Light and Lighting
• Auxiliaries for cultivation
• Identification of genus and species
• Challenges

Observation:

• Devices for observation
• Sexual reproduction in Cymbella (allomixis)
• Trajectories
  
  • Form of the paths
  • Description of the trajectories
  • Motion Tracking of Diatoms
  • Analysis of trajectories I
  • Analysis of trajectories II
• Horizontal view (originally in a single post):
  
  • Method of observation
  • Craticula cuspidata from a horizontal view