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Fotos / Sons

Observador

davidfbird

Data

Março 27, 2024 03:15 PM EDT

Descrição

From a meltwater puddle on the quarry floor. 140 µ by 8 µ wide.

Fotos / Sons

Observador

davidfbird

Data

Março 27, 2024 03:32 PM EDT

Descrição

40 wide by 50 microns long. From a meltwater puddle on the quarry floor.

Fotos / Sons

Observador

davidfbird

Data

Março 27, 2024 01:32 PM EDT

Descrição

140 microns long. From a meltwater puddle thick with filamentous algae.

Fotos / Sons

Observador

davidfbird

Data

Março 27, 2024 03:58 PM EDT

Descrição

From a meltwater puddle that was thick with filamentous green algae. Length 50 µm,

Fotos / Sons

Observador

davidfbird

Data

Março 25, 2024 12:43 PM EDT

Descrição

From a spring runoff tributary, running over a collection of dead leaves (oak, maple, beech, sassafras), at the Grindstone Cascade. Two macronuclei, large posterior contractile vacuole, oral slit along the neck. About 250 µm long extended.

I put a one-minute video of Litonotus cygnus taking a bite out of an amoeba, here: https://www.facebook.com/100070304167055/videos/1136506550825168.
Here's another Litonotus cygnus:https://www.facebook.com/100070304167055/videos/7378433825570870/.

Fotos / Sons

What

Borrelho-de-Coleira-Dupla (Charadrius vociferus)

Observador

davidfbird

Data

Março 27, 2024 03:35 PM EDT

Descrição

I came upon this nest while photographing lichens. I thought at first that it had been abandoned, but on the way back later I saw the skittish parents.

Fotos / Sons

What

Tussilagem (Tussilago farfara)

Observador

davidfbird

Data

Março 25, 2024 06:17 PM EDT

Fotos / Sons

Observador

davidfbird

Data

Março 25, 2024 05:32 PM EDT

Fotos / Sons

Observador

davidfbird

Data

Março 25, 2024 05:32 PM EDT

Descrição

Two cm colony on moss on soil layer over rock, beside the stream. The reflected colour of the sky is a bit deceptive; the thallus is translucent green-black. Thickened, often ascending margins. No isidia or apothecia. There is occasional white tomentum to affix it to the moss.

Fotos / Sons

Observador

davidfbird

Data

Março 25, 2024 05:32 PM EDT

Fotos / Sons

Observador

davidfbird

Data

Fevereiro 5, 2024 11:14 AM EST

Descrição

From the foam accumulated at rock barriers in the stream, another kind of aquatic hyphomycete conidia. Cells are 2-4 x 1-1.5 µm. I'm not sure of the identification - going out on a limb.

Fotos / Sons

Observador

davidfbird

Data

Fevereiro 5, 2024 02:23 PM EST

Descrição

Conidium of one of the Ingoldian fungi, collected in the foam that accumulated upstream of small rock barriers in the stream. Identified with the aid of Gulis et al. (2020) An Illustrated Key to the Common Temperate Species of Aquatic Hyphomycetes.
https://www.researchgate.net/publication/343345080_An_Illustrated_Key_to_the_Common_Temperate_Species_of_Aquatic_Hyphomycetes

Fotos / Sons

Observador

davidfbird

Data

Março 12, 2024 01:04 PM EDT

Descrição

From a meltwater pond on a grassy trail. Length 35 microns. Two unequal flagella, no visible ingestion tools. The second and third gifs show its attempt to ingest a diatom, without success. When I came back later, a large diatom had successfully been consumed (2nd jpg and 4th gif).

Fotos / Sons

Observador

davidfbird

Data

Março 12, 2024 12:55 PM EDT

Descrição

About 30 µm long. From a vernal pond on the escarpment. I've put a one-minute video of this cell consuming a small green-algal cell using the rod-organ, here: https://www.facebook.com/100070304167055/videos/1064414261681441.

Fotos / Sons

Observador

davidfbird

Data

Março 12, 2024 10:46 AM EDT

Descrição

From a vernal pool, about 8 inches deep, 20 x 50 feet, in the forest, on the limestone escarpment. 820 microns long.

Fotos / Sons

Observador

davidfbird

Data

Março 12, 2024 11:18 AM EDT

Descrição

From a vernal pool in the woods, on limestone. Length 615 microns.

Fotos / Sons

Observador

davidfbird

Data

Março 13, 2024 03:42 PM EDT

Descrição

From my homemade birdbath. It's made with an aluminum cake pan, so I wondered where the rust colour had come from over the course of the winter. From the rain or the snow, apparently.

Fotos / Sons

Observador

davidfbird

Data

Março 12, 2024 03:33 PM EDT

Descrição

From a vernal pool in the woods, on the limestone atop the escarpment. Dense zoochlorellae content. It has eyespots, so it's not Typhloplana. It reacted negatively to the condenser light, which made it difficult to photograph. The head is orange-yellow. The tail is simple and pointed. Glides on cilia. Extended length is 2.8 to 3 mm.

Fotos / Sons

Observador

davidfbird

Data

Março 12, 2024 04:45 PM EDT

Fotos / Sons

Observador

davidfbird

Data

Março 12, 2024 03:26 PM EDT

Descrição

Swimming with an underwater air bubble, among the fallen leaves in a small vernal pond in the forest. Limestone bedrock. Length 6.8 mm.

Fotos / Sons

Observador

davidfbird

Data

Março 5, 2024 01:17 PM EST

Descrição

In a temporary puddle on a grassy trail. Size 280 x 42. It was not laying flat, so it's probably slightly more curved than is apparent. I make out 3 pyrenoids per half-cell - might be more?

Fotos / Sons

Observador

davidfbird

Data

Março 5, 2024 03:06 PM EST

Descrição

From a small stagnant puddle on a grassy trail, on a warm day. Bright sunshine caused small aggregations of algae to float, producing a noticeable surface film.

The filament was motile, with oscillation and clockwise rotation. Filament width 4-5 microns. Cell length is 50 to 100% of cell width, about 70% on average. Apical cells rounded-conical. No sheath. Cells not or very slightly constricted at crosswalls. Gif is sped up about 20 times.

Ref.: Strunecký, O., Komárek, J. & Smarda, J. (2014). Kamptonema (Microcoleaceae, Cyanobacteria), a new genus derived from the polyphyletic Phormidium on the basis of combined molecular and cytomorphological markers. Preslia (Prague) 86: 193-207.
link: https://www.researchgate.net/publication/286877460_Kamptonema_Microcoleaceae_Cyanobacteria_a_new_genus_derived_from_the_polyphyletic_Phormidium_on_the_basis_of_combined_molecular_and_cytomorphological_markers

Fotos / Sons

Observador

davidfbird

Data

Março 2, 2024 02:29 PM EST

Descrição

From a sample of puddles of meltwater along the trail, at the Taquanyah Conservation Area. This ciliate quickly established a flexible lorica attached to the slide within less than an hour. It has a ring of cirri, and a flexible membrane attached to the cytostome. The caudal end was attached to the slide, until it decided to leave. I found it again later - it had started to make a new lorica, until it decided to leave again, presumably because of my efforts to get it into focus. Inside diameter of lorica was 27-32 µm. The only description that does it justice is a series of video excerpts over on fb:
1) https://www.facebook.com/100070304167055/videos/944379230655453/
2) https://www.facebook.com/100070304167055/videos/952767766855031/
3) https://www.facebook.com/100070304167055/videos/883668893770323/

Fotos / Sons

Observador

davidfbird

Data

Março 2, 2024 03:00 PM EST

Descrição

Palmelloid neustonic chrysophyte cells that formed on the surface of a sample from a small ditch along the trail. The rafts of cells appeared within a few hours of sample collection. One or 2 yellow-brown-golden chloroplasts with a refractile stigma. Cell size 6-8 µm or up to 10 µm for dividing/divided cells. Please ignore the ciliate I was pursuing. The second photo is a stacked image of 3 shots, so the mobile ciliate appears three times.

Fotos / Sons

Observador

davidfbird

Data

Março 1, 2024 02:18 PM EST

Descrição

On a limestone boulder. Spores muriform, hyaline to light brown. Spores 23-(28.2)-38 by 9-(12.7)-15.6. Green algae of two different sizes - the algae in immature perithecia are weirdly tiny, the size of picoplankton, about 2 µm.

Fotos / Sons

What

Peru (Meleagris gallopavo)

Observador

davidfbird

Data

Março 2, 2024 10:26 AM EST

Fotos / Sons

Observador

davidfbird

Data

Fevereiro 26, 2024 11:17 AM EST

Descrição

From a sample of periphyton collected in a small stream that crosses the trail. Cell length 113 µm. Large central macronucleus and prominent micronucleus. F. acuminata?

Fotos / Sons

Observador

davidfbird

Data

Fevereiro 26, 2024 10:36 AM EST

Descrição

On limestone rock on the trail. Blue prothallus, black thallus heavily isidiate. Tiny lecideine apothecia. Blue-grey-green epihymenium, brown hypothecium. Spores 2-celled, ellipsoidal, 10-12 x 4-6 µm. Secondary phycobiont was Trentepohlia.

Fotos / Sons

What

Raposa (Vulpes vulpes)

Observador

davidfbird

Data

Abril 23, 2013 07:43 AM EDT

Descrição

Its eyes were so sad.

Fotos / Sons

Observador

davidfbird

Data

Fevereiro 26, 2024 12:32 PM EST
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