#vijver

[dutchjan]

December 23, 2022

[vijverpassie]

ICYMI: Een Vijver of Sloot: Welke Kies Je?  https://vijverpassie.nl/een-vijver-of-sloot-welke-kies-je/?utm_source=dlvr.it&utm_medium=tumblr

[atevegter]

3239 Stadstuin

Een neef van mij ligt de hele dag in zijn tuin. Niet alleen in de zomer, als het mooi weer is, nee, het hele jaar door speurt hij in zijn tuin naar beestjes. Grote beesten, kleine beestje, alles telt mee. Als er bij wijze van spreken een zeearend over zijn tuin vliegt dan telt die mee, maar voor het merendeel zijn het natuurlijk kleine beestjes die hij telt. Hij heeft in twee jaar al zo’n…

[irisgardenecology]

Jullie beste vragen (en mijn beste antwoorden) over (regenwater)vijvers!

Ik krijg regelmatig vijvervragen naar aanleiding van mijn blogs, mijn boek Tuinlogica en lezingen. Zo vaak zelfs, ik heb een vragenstop moeten inschakelen, zo veel (onbetaalde) tijd was ik eraan kwijt! Daarom heb ik hier 7 van de beste en meest voorkomende vragen verzameld: hopelijk neemt dit de grootste/laatste vraagtekens weg! Continue reading Jullie beste vragen (en mijn beste antwoorden)…

[mijnniemandsland]

Alle eendjes.

Het bekende kinderliedje “Alle Eendjes Zwemmen in het Water” illustreert een vrolijk tafereel van eendjes die zwemmen in een vijver. Echter, vanuit een hydrodynamisch en ecologisch perspectief rijst er een interessante vraag: wat als daadwerkelijk alle eenden tegelijkertijd in een vijver zouden zwemmen? Dit artikel onderzoekt de potentiële gevolgen van zo’n scenario en de noodzaak van een…

[elkedageenfotovanluus]

mooie kleuren bij de vijver

[vijveratelier]

[figureskatingcostumes]

Nicolas van der Vijver competing in the 2021 Junior Grand Prix Ljubljana.

(Source: picdrop.com)

[zoueriemandzijnopmars]

Ik kan niet geloven dat van alle mensen Wilders, degene is die Baudet aanspreekt op zijn samenzweringstheorieën

[missdowling]

Appreciation post cause this woman deserves the world

[leaping-laelaps-art]

The archeocete Perucetus colossus dives through a coastal bloom of jellyfish in the Pisco Basin (southern Peru), some time during the Eocene (with bonus multiview).

I originally intended to add epibionts to this reconstruction (reflecting the specialized communities found on many living whales, especially baleen whales). Yet, interestingly, it appears that most animal epibionts and ectoparasites of modern cetaceans, such as whale barnacles (Hayashi et al. 2013) and remoras (Friedman et al. 2013), only appeared in the Neogene or late Paleogene, or have a poorly known (co-)evolutionary history, like whale lice (Pfeiffer 2009, Iwasa-Arai & Serejo 2018) and pennellids (large parasitic copepods) (Hermosilla et al. 2015). So, no epibionts* for big lad Perucetus!

References and notes about the reconstruction:

*animal epibionts. Unicellular eukaryotes like diatoms were most likely present on early cetaceans, given their prevalence on modern large marine animals (Ashworth et al. 2022). Of course, it is possible that other animals (i.e., early, less specialized representatives of modern groups, or different taxa altogether) were also already exploiting the surfaces offered by these early whales; however, this remains entirely speculative.

The reconstruction of Perucetus proposed in its original description (Bianucci et al. 2023) includes some rather odd (if interesting) choices about soft tissues, including limbs with webbed and distinguishable fingers, and a manatee-like tail. While these choices might be defendable in light of the rather basal status of Perucetus among cetaceans, I opted for a more derived look based on the assumption that fully marine cetaceans like basilosaurids would have probably rapidly acquired hydrodynamically favorable adaptations, pushing them towards a more familiar Neoceti-like appearance (even though Perucetus itself was likely a poor swimmer (Bianucci et al. 2023), it seems likely to me that this was a secondarily acquired trait, given the less extreme morphology of other basilosaurids).

Reconstruction in the multiview scaled to ~18 m in length after the estimations of Bianucci et al. (2023).

References:

Ashworth, M. P., Majewska, R., Frankovich, T. A., Sullivan, M., Bosak, S., Filek, K., Van de Vijver, B., Arendt, M., Schwenter, J., Nel, R., Robinson, N. J., Gary, M. P., Theriot, E. C., Stacy, N. I., Lam, D. W., Perrault, J. R., Manire, C. A., & Manning, S. R. (2022). Cultivating epizoic diatoms provides insights into the evolution and ecology of both epibionts and hosts. Scientific Reports, 12(1), Article 1. https://doi.org/10.1038/s41598-022-19064-0

Bianucci, G., Lambert, O., Urbina, M., Merella, M., Collareta, A., Bennion, R., Salas-Gismondi, R., Benites-Palomino, A., Post, K., de Muizon, C., Bosio, G., Di Celma, C., Malinverno, E., Pierantoni, P. P., Villa, I. M., & Amson, E. (2023). A heavyweight early whale pushes the boundaries of vertebrate morphology. Nature, 620(7975), Article 7975. https://doi.org/10.1038/s41586-023-06381-1

Friedman, M., Johanson, Z., Harrington, R. C., Near, T. J., & Graham, M. R. (2013). An early fossil remora (Echeneoidea) reveals the evolutionary assembly of the adhesion disc. Proceedings of the Royal Society B: Biological Sciences, 280(1766), 20131200. https://doi.org/10.1098/rspb.2013.1200

Hayashi, R., Chan, B. K. K., Simon-Blecher, N., Watanabe, H., Guy-Haim, T., Yonezawa, T., Levy, Y., Shuto, T., & Achituv, Y. (2013). Phylogenetic position and evolutionary history of the turtle and whale barnacles (Cirripedia: Balanomorpha: Coronuloidea). Molecular Phylogenetics and Evolution, 67(1), 9–14. https://doi.org/10.1016/j.ympev.2012.12.018

Hermosilla, C., Silva, L. M. R., Prieto, R., Kleinertz, S., Taubert, A., & Silva, M. A. (2015). Endo- and ectoparasites of large whales (Cetartiodactyla: Balaenopteridae, Physeteridae): Overcoming difficulties in obtaining appropriate samples by non- and minimally-invasive methods. International Journal for Parasitology: Parasites and Wildlife, 4(3), 414–420. https://doi.org/10.1016/j.ijppaw.2015.11.002

Pfeiffer, C. J. (2009). Whale Lice. In W. F. Perrin, B. Würsig, & J. G. M. Thewissen (Eds.), Encyclopedia of Marine Mammals (Second Edition) (pp. 1220–1223). Academic Press. https://doi.org/10.1016/B978-0-12-373553-9.00279-0

[dutchjan]

August 04, 2024

[vijverpassie]

ICYMI: Vijver Filter Maken: Een Doe-Het-Zelf Gids  https://vijverpassie.nl/vijver-filter-maken-een-doe-het-zelf-gids/?utm_source=dlvr.it&utm_medium=tumblr

[leibal]

Patiowoning Vijver is a minimalist home located in Diepenbeek, Belgium, designed by BOT architektuurcollectief. This 1970s split-level house once showcased a boxed design with limited light access and little interaction with its expansive garden. Now, it stands as a modern dwelling, brilliantly illuminated by natural light, with strategic viewpoints to its picturesque environment.

[irisgardenecology]

Tuinkompas: wat kun je doen met welke tuinrichting?

Van alle tuinen en hoeken is wel wat (nuttigs) te maken, als je niet alleen kijkt naar wat je wílt maar ook naar de mogelijkheden van wat je hebt. Continue reading Untitled

[beardedmrbean]

The Prisons’ Authority has confirmed that officers at Antwerp Prison are refusing to admit new inmates, adding that it is consulting with examining magistrates to see where the detainees that would normally have been sent to Antwerp Prison can be sent instead. As was the case previously, the prison officers are once again protesting against overcrowding at the prison. Issues with overcrowd have led to aggression by prisoners against prison staff and other inmates.  

This is not the first time that guards at Antwerp Prison have taken action of this nature. ACOD’s Mario Heylen says that overcrowding and staff shortage are resulting in degrading conditions for prisoners and an increase of assaults by prisoners both on other inmates and on prison staff. 

At any given time around 70 inmates at Antwerp prison are having to sleep on matrasses on the floor of their cells as there are not enough beds. The unions are calling for the number of male inmates at the jail to be limited to a maximum of 600, which is still higher than the prison’s capacity of 439 inmates.

The Prisons’ Authority has been informed of the prison officers’ action by the prison’s governor. It says that the action is “regrettable” as it has plans to transfer a number of inmates from Antwerp Prison to other jails “in the near future”.

The Prisons’ Authority’s Kathleen Van de Vijver told journalists that “We have been preparing to transfer inmates since last week. 32 inmates are currently ready to leave. But of course, the practicalities of arranging this take a little time”. Ms Van de Vijver added that talks with management and staff from the prison were already planned.

The Prisons’ Authority has reiterated its call to the next federal government to set quotas for the maximum number of inmates in each of the country’s jails.