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Students employed by the Arboretum and Public Garden summer student worker program are working to help keep the waterway clean, but more importantly, are working on ways to help keep the waterway more attractive throughout summer by developing a variety of algae collection solutions.
Clatto Reservoir is split into two parts, with the smaller part being covered in algae. Despite there being a bit of a breeze blowing on the evening I was here, this part of the reservoir remains sheltered and possibly explains why there's so much algae growth here. Another thing worth mentioning is that clump of trees isn't an island, it is in-fact a peninsular.
Just to the right of this photo is a metal walkway that goes partially out into the water. When I first started coming here, you could freely walk on it and get a good view of the water but in recent years, some prick has put a caged area over the walkway to stop people getting on. It's easily bypassed and I go round it every time as a point of principle.
Does anyone have any idea what kind of algae and/or diatoms this could be? (It's from the northern part of Germany.)
Strange algae that's been in the refugium for a while. It started out pretty small. Seems to be a slow grower, it's maybe the size of a ping pong ball now.
Codium fragile
So pretty, but I think it is a pest species spreading around the world. Originally from Japan.
Scientific name: Spirogyra sp.,
Khmer name: ស្លែទឹក,
English name: Filamentous algae, Water silk,
French name: Spirogyre,
Japanese name: アオミドロ ,
Thai name: สไปโรไจรา,
Korean name: 민물 조류,
Russian name: Спирогира,
Chinese name: 水綿,
Vietnamese name: Rong nhớt, Tảo xoắn.
Beach users reassured about seasonal algae
Natural Resources Wales is reassuring visitors to some North Wales beaches that bright orange-coloured water is not pollution, but a type of seasonal marine algae.
Officers from Natural Resources Wales have been to test the water at the Penmaenmawr beach and have identified the early signs of an algal bloom.
Reports are also coming in that the orange colour is visible at Llandudno and may also be present on other beaches in North Wales.
The Noctiluca marine algae, also known as Sea Sparkle, is common across the Welsh coastline during this time of year, and is a naturally occuring phenomenon.
The orange colour can be even more pronounced at night as it appears to glow in the dark.
Richard Berry, from Natural Resources Wales said:
“Over the last few weeks we’ve had lots of reports in about material in the sea which is often mistaken for sewage or pollution, but is in fact marine algae. It might not look pleasant, but it is a natural process and very common at this time of year and particularly during warm periods of weather.
“It is not causing any environmental impact at the moment, but we’ll continue to monitor conditions in the sea over the coming days.
“If anybody thinks they have noticed pollution that isn’t marine algae, they should always report it to our incident hotline on 0800 80 70 60.”
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My best guess is that the substance on these branches is 'Trentepohlia', a genus of filamentous green chlorophyte algae which lives on tree trunks and wet logs. The strong brownish-orange color of the filaments, which mask the green of the chlorophyll, is caused by the presence of large quantities of carotenoid pigments. I discovered this algae growing on top of a high bluff next to the Pacific Ocean in northern California.
This almost fluorescent orange algae thrives in this part of the North Island -- it's all over. It was hard to get a good photo of, but this at least gives an idea. It was also hard to ID! Didn't help that it was identified there as a type of "brown algae", which I took to mean Phaeophyta -- that turned out to be a dead end. A brute-force Flickr search on "New Zealand algae" finally turned up a photo labeled with an ID. It turns out to be botanically a type of green algae (Chlorophyta) called Trentepohlia.
A family observe Algae through a microscope,
MMU Family Fun Day
National Science & Engineering week 2011
www.sci-eng.mmu.ac.uk/engage/wp-content/uploads/2012/09/G...
Blue-green algae, whose scientific name is filamentous cyanobacteria, has 22 species in Guam's waters.
Roy Tsuda
Taken with 40x Zeiss Plan achromat lens and modified brightfield setup. Zeiss photomicroscope II 1.3 NA Abbe condenser. Sample in a well slide. Diatoma vulgaris or Diatoma hiemale?