Fotos / Sonidos

Observ.

mnold1

Fecha

Septiembre 29, 2022 a las 08:03 TARDE EDT

Descripción

Mag. 400x, 2 specimens photographed
Micrasterias ringens, according to AlgaeBase (https://www.algaebase.org/search/species/detail/?species_id=103503), is now considered a synonym of Micrasterias mahabuleshwarensis var. ringens

  • A water sample was taken on 09/13/2022 from the shore of Long Pond using a 10µ dip net to enrich for microbes. Air temp. 71°F. (Sample was stored at room temperature and assayed again on 9/29/2022.)

Fotos / Sonidos

Observ.

mnold1

Fecha

Mayo 26, 2023 a las 08:23 TARDE EDT

Descripción

Mag. 400x
Previously observed in this same water sample, https://www.inaturalist.org/observations/160823260.

  • A water sample was taken on 5/8/2023, from the shore of Lantern Hill Pond, using a 10µ dip net to enrich for microbes. Air temp. 73°F.

Fotos / Sonidos

Observ.

mnold1

Fecha

Mayo 30, 2023 a las 09:00 MAÑANA EDT

Descripción

Mag. 400x
Found singly and in tandem pairs. (11 singletons and pairs in all.) All have a mucilaginous sheath. The size varied little: approx. 20µ L x 35µ W; 10µ isthmus. @karolina suggests this may be Staurastrum sublaevispinum.

  • periphyton samples were collected by the 2023 Desmid Project team of @karolina et al

Fotos / Sonidos

Observ.

mnold1

Fecha

Mayo 30, 2023 a las 11:15 MAÑANA EDT

Descripción

Max 400x

  • sediment samples were collected by the 2023 Desmid Project team of @karolina et al at Victory Basin sample site 3.

Staurastrum. Size: 18µ L x 35µ W; isthmus 9µ. ID'd by @karolina

Fotos / Sonidos

Observ.

mnold1

Fecha

Mayo 30, 2023 a las 01:35 TARDE EDT

Descripción

Mag. 400x

  • sediment samples were collected by the 2023 Desmid Project team of @karolina et al at Victory Basin sample site 3.

Onychonema as seen here http://cfb.unh.edu/phycokey/Choices/Charophyceae/Desmids/desmid_filaments/ONYCHONEMA/Onychonema_Image_page.html.

Fotos / Sonidos

Observ.

mnold1

Fecha

Julio 31, 2023 a las 02:57 TARDE EDT

Descripción

Mag. 400x

  • A pond-side water sample was taken on 07/31/2023 using a 10µ dip net to enrich for microbes. Air temp. 75°F.

Micrasterias laticepts. The second photo is a composite image assembled to highlight the pockmarked cell surface, especially visible along the apical axis.

For a reference photo, see
https://www.algaebase.org/search/images/detail/?img_id=35149

Fotos / Sonidos

Observ.

mnold1

Fecha

Julio 31, 2023 a las 06:48 TARDE EDT

Descripción

Mag. 400x

  • A pond-side water sample was taken on 07/31/2023 using a 10µ dip net to enrich for microbes. Air temp. 75°F.

As seen here https://www.algaebase.org/search/images/detail/?img_id=19628.

L= 60µ
W = 60µ
Isthmus = 17µ

Fotos / Sonidos

Observ.

mnold1

Fecha

Julio 31, 2023 a las 10:23 TARDE EDT

Descripción

Mag. 400x

  • A pond-side water sample was taken on 07/31/2023 using a 10µ dip net to enrich for microbes. Air temp. 75°F.

Large Cosmarium. A similar specimen (slightly smaller), from the same water sample, was identified by @geraldojpr, https://www.inaturalist.org/observations/176333296.

top left specimen
L = 150µ
W = 95µ
Isthmus = 35µ

Fotos / Sonidos

Observ.

mnold1

Fecha

Septiembre 3, 2023 a las 09:02 TARDE EDT

Descripción

Mag. 400x

  • A water sample was taken on 09/03/2023 from pond-edge using a 10µ dip net to enrich for microbes. Air temp. 80°F.

This taxon was recently observed in a water sample from a nearby pond (Long Pond, which is much larger than the current sampling location, Sawmill Pond); observations from Long Pond, https://www.inaturalist.org/observations?d1=2023-07-01&d2=2023-07-31&place_id=any&taxon_id=1486895&user_id=mnold1&verifiable=any.
The current and previously observed specimens are very large and their cell wall surface appears entirely toothed except the apices.

L = 150µ
W = 95µ
Isthmus = 28µ

Fotos / Sonidos

Observ.

mnold1

Fecha

Septiembre 3, 2023 a las 08:29 MAÑANA EDT

Descripción

Mag. 400x

  • A water sample was taken on 09/03/2023 from pond-edge using a 10µ dip net to enrich for microbes. Air temp. 80°F.

...rather than M. radiosa var. elegans, which would have narrower lobes, or M. radiosa var. ornata, which would have spines along the margins of the polar lobes. For reference images and descriptions, see https://www.researchgate.net/publication/328845266_Taxonomic_notes_on_the_species_of_the_genus_Micrasterias_Desmidiaceae_Conjugatophyceae_from_the_Metropolitan_Region_of_Salvador_Bahia_Brazil.

Fotos / Sonidos

Observ.

mnold1

Fecha

Octubre 18, 2023 a las 07:00 TARDE EDT

Descripción

Mag. 400x

  • A pond-side water sample (retentate) was taken on 10/14/2023 using a 10µ dip net to enrich for microorganisms. Air temp 58F.

Fotos / Sonidos

Observ.

mnold1

Fecha

Octubre 14, 2023 a las 08:32 TARDE EDT

Descripción

Mag. 400x

  • A pond-side water sample (retentate) was taken on 10/14/2023 using a 10µ dip net to enrich for microorganisms. Air temp 58F.

Fotos / Sonidos

Observ.

mnold1

Fecha

Octubre 14, 2023 a las 09:42 MAÑANA EDT

Descripción

Mag. 400x

  • A pond-side water sample (retentate) was taken on 10/14/2023 using a 10µ dip net to enrich for microorganisms. Air temp 58F.

This spiny taxon has been observed 3 more times in local ponds (twice from the current sampling location and once from a nearby location), https://www.inaturalist.org/observations?place_id=any&taxon_id=996326&user_id=mnold1&verifiable=any
Reference
https://www.desmids.nl/maand/english/staurastrum_polytrichum.html

Fotos / Sonidos

Observ.

mnold1

Fecha

Enero 6, 2024 a las 08:50 MAÑANA EST

Descripción

Mag. 400c

  • A pond-side water sample (retentate) was taken on 01/06/2024 using a 10µ dip net to enrich for microorganisms. (The shoreline had a layer of ice about 1/4" thick that needed to be breached in order to accommodate the dipnet. The retentate contained a lot of sediment due to the shallow depth and disturbance caused by the net.) Air temp 35F.

Medium-large (70µ x 25µ), asymmetric biraphid. Apiculate apices. Striae density: 7/10µ at the center, 9/10µ toward the apices. If you use your wishful-seeing vision on the first image, you might see the proximal end of the right raphe make an L-shaped dive into the central depression (aka, central nodule). All of these characteristics fit well with Cymbopleura apiculata as the ID. https://diatoms.org/species/cymbopleura_apiculata.
(However, it is also very similar to Cymbopleura americana https://fottea.czechphycology.cz/pdfs/fot/2011/02/01.pdf, but this taxon is not in algaebase.)

Fotos / Sonidos

Observ.

mnold1

Fecha

Marzo 13, 2024 a las 09:55 MAÑANA EDT

Descripción

Mag. 400x

  • Water sample (with sediment) was taken from the shore of a small mill pond (on Billings Avery Brook) on 3/13/2024 using a jar tethered to an extension. pole. Air temp. 50F.

Small Trinema shell (from a testate, filose amoeboid). Though small, the 35µ length may push the ID to Trinema enchelys rather than Trinema lineare. According to F. Siemensma's data, the size range for T. lineare is 16-30µ and for T. enchelys, 30-100µ, https://arcella.nl/trinema/. Comparing the current images to others ID'd here on iNat as T. lineare, I lean toward T. lineare as the ID, https://arcella.nl/trinema-lineare/. For comparison purposes, the last composite image shows the current specimen compared with 2 other Trinema species observed in this same water sample. All 3 are on the same size scale.

Fotos / Sonidos

Observ.

bdstaylor

Fecha

Agosto 14, 2023 a las 10:35 MAÑANA EDT

Fotos / Sonidos

Observ.

bdstaylor

Fecha

Agosto 26, 2023 a las 05:59 TARDE EDT

Fotos / Sonidos

Observ.

asterochloris

Fecha

Marzo 22, 2024 a las 01:16 TARDE +07

Fotos / Sonidos

Observ.

asterochloris

Fecha

Marzo 22, 2024 a las 01:15 TARDE +07

Fotos / Sonidos

Observ.

asterochloris

Fecha

Marzo 13, 2024 a las 11:18 MAÑANA +07

Fotos / Sonidos

Observ.

asterochloris

Fecha

Marzo 13, 2024 a las 07:18 TARDE +07

Fotos / Sonidos

Observ.

camchoquette8

Fecha

Agosto 3, 2020 a las 05:10 TARDE EDT

Descripción

Length (μm): 55.5
Width (μm): 37.5

Fotos / Sonidos

Observ.

raeubertochter

Fecha

Mayo 2023

Fotos / Sonidos

Observ.

theomuusse

Fecha

Mayo 2022

Fotos / Sonidos

Observ.

kenkneidel

Fecha

Abril 13, 2021

Descripción

193 microns

Fotos / Sonidos

Observ.

camchoquette8

Fecha

Julio 15, 2020 a las 02:09 MAÑANA EDT

Descripción

Length (μm): 108
Width (μm): 98.5
Width at center (μm): 45.5

Fotos / Sonidos

Observ.

crseaquist

Fecha

Diciembre 19, 2021 a las 11:31 MAÑANA CST

Descripción

A stream water sample (freshwater) was taken on 11/06/2021 using a 10 micron dip net to enrich for microorganisms.

About 14 microns long.

Fotos / Sonidos

Observ.

cocokitty

Fecha

Septiembre 6, 2021 a las 07:39 TARDE EDT

Fotos / Sonidos

Observ.

jennycall

Fecha

Junio 8, 2021 a las 02:20 TARDE EDT

Fotos / Sonidos

Observ.

laneallen

Fecha

Julio 2019

Lugar

Texas, US (Google, OSM)

Descripción

Scale Bar = 10 µm

Fotos / Sonidos

Observ.

paul_norwood

Fecha

Septiembre 14, 2022 a las 07:31 TARDE AKDT

Fotos / Sonidos

Observ.

paul_norwood

Fecha

Septiembre 22, 2022 a las 12:02 TARDE AKDT

Fotos / Sonidos

Fecha

Diciembre 31, 2018

Fotos / Sonidos

Observ.

nicci3

Fecha

Septiembre 4, 2017 a las 05:08 TARDE CDT

Fotos / Sonidos

Observ.

valve

Fecha

Enero 19, 2024 a las 01:21 TARDE AEDT

Fotos / Sonidos

Observ.

mnold1

Fecha

Enero 6, 2024 a las 01:02 TARDE EST

Descripción

Mag. 400x

  • A pond-side water sample (retentate) was taken on 01/06/2024 using a 10µ dip net to enrich for microorganisms. (The shoreline had a layer of ice about 1/4" thick that needed to be breached in order to accommodate the dipnet. The retentate contained a lot of sediment due to the shallow depth and disturbance caused by the net.) Air temp 35F. (sample has been sitting on a cool, west-facing window ledge since 1/6/24)

https://arcella.nl/arcella-gibbosa/
The final composite image includes recently observed Arcella species from the same water sample, all normalized to the same scale..

Fotos / Sonidos

Observ.

kelian_gtr

Fecha

Marzo 26, 2022 a las 09:32 MAÑANA CET