The IOW-Picture Gallery of Baltic microalgae
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The IOW-Picture Gallery of Baltic microalgae
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A particular role in Baltic ecology
is assigned to those microalgae, whose sinking connects pelagic and benthic
cycles of matter. This process forms the first step of material transfer
from the pelagic food web of the surface waters to the sediments, which are
characterized by geological interactions. The analysis of sinking species of
algae and the resulting transfer of elements to the sediment allows conclusions
on the recent external loading of the Baltic ecosystem and helps to reconstruct
past environmental conditons of this sea. A comparison between algae, abundant
in surface waters, and sedimenting species reveals the special importance of
certain algal species or groups for the formation of sediments.
These analyses are performed since 1997 at a central spot in the Baltic, the
Gotland Sea, where sinking matter is continuously collected by means of large
funnel-shaped divices (sediment trapsPicture). The saisonal succession of algal
groups ,important in this process, as well as a collection of light- and
SEM-microphotopgraphs of algae from samples of surface water and sediment traps,
is presented for the period 1997-1999.
Gallery, list of content
 Cyanophyceae |
 |
Anabaena
sp
Aphanizomenon
gracile
Aphanizomenon
sp
Aphanocapsa
delicatissima
Aphanothece
in rows
Aphanothece
paralleliformis
Coelosphaerium
minutissimum
Cyanodictyon
planctonicum
Lemmermanniella
pallida
Limnothrix
redekei
Merismopedia
punctata
Merismopedia
tenuissima
Microcystis
aeruginosa
Nodularia
spumigena
Oscillatoria
sp.
Planktolyngbya limnetica
Pseudanabaena
limnetica
Romeria
sp.
Snowella
septentrionalis
Snowella
sp.
Woronochinia
compacta
| Cryptophyceae |
Hemiselmis
sp.
Katablepharis
remigera
Leucocryptos
marina
Plagioselmis
prolonga
Teleaulax acuta
| Dinophyceae |
 |
Amphidinium
crassum
Amylax
triacantha
Ceratium
furca
Ceratium
fusus
Ceratium
horridum
Ceratium
lineatum
Ceratium
longipes
Ceratium
tripos
Ceratium
tripos gamete fusion and gametes
cf.
Akashiwo sanguinea
cf.
Scrippsiella hangoei
Dinophysis accuminata
Dinophysis
acuta
Dinophysis norvegica
Dinophysis
rotundata
Diplopsalis-Group
(Typ Oblea)
Dissodinium
pseudolunula
Ebria
tripartita
Glenodinium
danica
Glenodinium sp. 1
Glenodinium
sp. 2
Gonyaulax
verior
Gymnodinium
simplex
Gymnodinium
sp. 1
Gymnodinium
sp. 2
Gymnodinium
sp. 3
Gymnodinium
sp. 4
Gymnodinium
sp. 5
Gyrodinium
spirale
Gyrodinium
sp. 1
Heterocapsa
triquetra
Katodinium
glaucum
Micracanthodinium
claytonii
Peridiniella
catenata
Polykrikos
schwarzii
Pronoctiluca
pelagica
Prorocentrum
micans
Prorocentrum
minimum
Protoperidinium
bipes
Protoperidinium
claudicans
Protoperidinium
conicum
Protoperidinium
divergens
Protoperidinium
pallidum
Protoperidinium
pellucidum
Protoperdinium
pentagonum
Protoperidinium
steinii
Protoperidinium
thorianum
Pyrophacus
horologicum
Scippsiella
sp.
Warnowia sp.
| Prymnesiophyceae |
Phaeocystis
sp.
Prymnesium
spec
| Chrysophyceae |
Apedinella
radians
Chrysochromulina
sp.
Ollicola
vangoorii
Dinobryon
balticum
Dinobryon
faculiferum
Pseudopedinella
cf. elastica
| Bacillariophyceae |
 |
Achnantes
taeniata
Actinocyclus
normanii fo. subsalsa
Actinocyclus
octonarius
Actinoptychus
senarius
Amphora
hybrida
Attheya
decora
Attheya
septentrionalis
Aulacodiscus argus
Bacteriastrum hyalinum
Biddulphia
alternans
Ceratualina
pelagica
Chaetoceros
affines
Chaetoceros
brevis
Chaetoceros
ceratosporus
Chaetoceros
constrictus
Chaetoceros
contortus
Chaetoceros
curvisetus
Chaetoceros
debilis
Chaetoceros
decipiens
Chaetoceros
diadema
Chaetoceros
impressus
Chaetoceros
laciniosus
Chaetoceros
similis
Chaetoceros
socialis
Chaetoceros
subtilis
Chaetoceros
throndsenii
Chaetoceros
wighamii
Coscinodaiscus
concinnus
Coscinodiscus
granii
Coscinodiscus
radiatus
Coscinodiscus
wailesii
Cyclotella
choctawhatcheeana
Cyclotella
distinguenda
Cyclotella
meneghiniana
Cyclotella
striata
Cylindrotheka
closterium
Dactyliosolen
fragilissimus
Detonula
confervacea
Detonula pumila
Diatoma
elongatum var. elongatum
Ditylum
brightwellii
Eucampia
zoodiacus
Guinardia
delicatula
Guinardia
flaccida
Guinardia
striata
Gyrosigma
sp.
Hyalodiscus
scoticus
Leptocylindrus
danicus
Leptocylindrus
minimus
Licmophora
sp.
Melosira arctica
Melosira
granulata
Melosira moniliformis
Melosira
varians
Nitzschia
acicularis
Nitzschia
frigida
Nitzschia
paleacea
Odontella
sinensis
Paralia
sulcata
Porosira
glacialis
Proboscia
alata
Pseudonitzschia
pungens
Pseudonitzschia
multiseries
Pseudonitzschia
pseudodelicatissima
Pseudonitzschia
seriata
Rhizosolenia
hebetata f. semispina
Rhizosolenia
pungens
Rhizosolenia
setigera
Skeletonema
costatum
Skeletonema
marinoi
Skeletonema
subsalsum
Stellarima
stellaris
Stephanodiscus
hantzschii
Stephanodiscus
rotula
Thalassionema
nitzschioides
Thalassiosira
angulata
Thalassiosira
anguste-lineata
Thalassiosira
baltica
Thalassiosira
decipiens
Thalassiosira
eccentrica
Thalassiosira
hyperborea
Thalassiosira
leptoporus
Thalassiosira
levanderi
Thalassiosira
nordenskiöldii
Thalassiosira
punctigera
Thalassiosira
rotula
Thalassiosira
weissflogii
Triceratium
alternans
| Raphidophyceae |
| Dictyochophyceae |
 |
Dictyocha
speculum - skeleton bearing stage
Dictyocha
speculum - uninucleate naked stage
| Euglenophyceae |
 |
Eutreptiella
sp.
Eutreptiella
braarudii
Trachelomonas
spec
| Chlorophyceae |
 |
Actinastrum
hantzschii
Coelastrum
microporum
Dictyosphaerium
ehrenbergianum
Koliella
longiseta
Pediastrum boryanum var. boryanum
Pediastrum
duplex var. duplex
Pediastrum
tetras
Planktonema
lauterbornii
Scenedesmus
ecornis
Scenedesmus opoliensis
Tetraedron
minimum
| Cysten |
Chrysophycean
cysts
Chrysophycean
cyst 10µm
| Anderes |
 |
Acanthoeca
sp.
Amoebe
Bacterial
manganese aggregation
Bivalvia
larvae
Calliacantha
natans
Ciliate
Cymbomonas tetramitiformis
Diaphanoeca
grandis
Diaphanoeca
sphaerica
Faecal
pellet
Myrionecta
rubra
Paulinella
ovalis
The photos were taken by Bahlo, Busch, Hansen,
Kunert.
The IOW gallery of pelagic microalgae is operated by Regina Hansen
and Susanne Busch.
regina.hansen@io-warnemuende.de
susanne.busch@io-warnemuende.de
| last update: 30.01.2009 | Criticism, ideas, suggestions to this page to: barbara.hentzsch@io-warnemuende.de |
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