City Nature Challenge 2020: Cape Town's Boletim

Arquivos de periódicos de abril 2020

15 de abril de 2020

BIOBLITZING GOGGOS!

With the City Nature Challenge 2020 coming up in a weeks time, it is time to start preparing and practicising for the Challenge.
Although the challenge is not a competition, this is a superb opportunity to learn and record about the wildlife that shares are gardens and homes. Birds and chameleons are easy to record, but how do we go about recording all the goggos? How do we get them into our gardens?

Remember that you will need your iNaturalist smartphone app (see far bottom of the page) to record these.

And because goggos are usually very small, you can photograph them through a magnifying glass to enlarge them. And remember to zoom in, your goggo should fill the photo, not be a minute speck lost somewhere in the middle.

Some ideas for attracting goggos include:

• Put out ripe/rotting fruit for flies and beetles. You need smaller quantities than for birds, but why not attract both. The insects though prefer more ripe fruit.

• Smear a strip of syrup or honey on a trunk to attract ants, butterflies, flies and beetles. Not too much otherwise it will become a trap rather than a feeding station.

• Create an insect “hotel” – do it now so that with luck it might have some inhabitants for the City Nature Challenge.

• Take part in the Moth Challenge! - see: https://www.inaturalist.org/projects/lockdown-moth-challenge-s-afr

• Sit and wait around flowers and photograph what visits. You will need to be very stealthy to be able to photograph them, so move very little and very slowly. Don’t forget to also record the flowers they visit on iNaturalist: they may be planted, but they are part of your garden ecology by attracting the birds, insects and chameleons. Your garden is only as good as the plants it contains!

• Check out your compost heap (if you have one). If not - why not create one

• If your garden has trees, take part in our Polyphagous Shothole Borer Beetle Atlas: remember to record your tree and make a note even if there is no sign of PSHBB - after all that is very good news! https://www.inaturalist.org/projects/polyphagous-shothole-borer-beetle-pshb-atlas-s-afr

Charmaine Oxtoby - our City of Cape Town Biodiversity Management Branch, Biophysical Specialist, has the following suggestions. Remember to take a container with you: a peanut butter jar with a lid, or an icre-cream tub to put goggos in to photograph them, will come in very handy. Dont forget your magnifying glass and your smartphone with the iNaturalist app ready to role.

• Look under stones, rocks, logs, pots, stepping stones, piles of bricks and anything else that would provide shelter for woodlice, earthworms, millipedes, centipedes, indigenous cockroaches, spiders and scorpions.

• During the CNC, break open decaying/rotting logs as there are many creatures who live just under the bark or deep inside.

• Recreate a forest floor – damp, shady areas with lots of leaf litter are best for decomposers and other ground-dwelling invertebrates. This is where you can place rotting logs or broken pots/pavers or rocks for things to hide under. You have a week to attract those that will fly in.

• Start a small pond to attract dragonflies and damselflies – dig a hollow and line it with thick plastic, or use a shallow basin. Place a rock or two just sticking out above the water. Have some tall plants or even dry branches in/around the pond for them to sit on. Don’t clean the bottom before the CNC and remember to check for larvae (‘worms’) swimming in the water.

• Have ‘puddles’ around the garden for insects to drink from. This could be drops of water on curled fallen leaves or a saucer on the ground, refilled regularly. Use rainwater.

• Start a small compost heap with kitchen scraps in the corner of the garden and keep it moist.

• Remember to look for evidence of invertebrates such as mud and paper nests of wasps, galls on leaves, cocoons/pupae of butterflies and moths, bag worms, empty carapaces or shells (good for cicadas), antlion sand pits.

• Don’t forget about the pests such as scale insects, mealy bugs, aphids, white fly, spider mites, cutworms, etc. They are all good for recording! And see if ants are visiting them as well!

• Stop using poisons and pesticides in your garden. Be willing to ‘share’ your veggie garden with wildlife and don’t get too upset if there’s a bit of munching in the next few weeks.

• Keep parts of the garden well-watered, especially if you can encourage flowering in plants that pollinators like such as gazanias, daisies and vygies - for insects. Use rainwater, grey water or borehole water if you can.

• Bait stations come in many forms. Try a combination of different heights, including tree trunks, rocks, on the bird feeder and on the ground (as bait cards). Overripe fruit (especially bananas) is great and will attract birds too. I think semi-shade is best.

• Pitfall traps such as a small yoghurt tub buried with the top at ground level. A little water will help stop them from escaping. But aim not to kill or drown your goggos because most invertebrates are beneficial or harmless to us and our gardens.
,

• Any sugary substance – thick sugar water, honey or syrup - is great for a bait station for pollinators and ants. Ants also like sweets such as (damp) jelly beans – if you are willing to share!

• Beer (if you have any left and are willing to share!) is great for attracting snails and slugs, as well as fruit flies. Place a small amount in a jar lid in the early evening in the vegetable garden. If you don’t have beer or rotting fruit, try a little bit of vinegar to attract fruit flies. If you dont have a vegetable garden, even a pot plant will do.

• Small dollops (teaspoonful or less) of stinky fish such as tuna or tinned cat food are good for ants, flies and beetles who like their protein. You will need to put your bait stations out of the way of any pets.

• Wetting chunks of bread can work for ants and birds – and they don’t mind if it’s stale or mouldy!

• Listen!!! Weather permitting remember to listen for crickets chirping at night, or other insects during the day..

• Look indoors too – jumping spiders, tiny spiders in corners and under furniture. They help with controlling mosquitoes and other goggos, so don't unnecessarily persecute them.

Even though we cannot go out into our green areas, we can still enjoy the wildlife in our gardens. The mini-animals are just as much fun as the bigger birds and herps. Have fun.

Stay safe and stay well.

Posted on 15 de abril de 2020, 12:57 PM by tonyrebelo tonyrebelo | 8 comentários | Deixar um comentário

17 de abril de 2020

Bioblitzing your Home and Garden

Posted on 17 de abril de 2020, 01:31 PM by tonyrebelo tonyrebelo | 0 comentários | Deixar um comentário

20 de abril de 2020

City Checklist!!

Here is a list of the most commonly seen species in Cape Town gardens during autumn over the last few years. Which of these can you observe - and record on iNaturalist?.

Save the list and print it for easy reference.

Posted on 20 de abril de 2020, 03:17 PM by tonyrebelo tonyrebelo | 2 comentários | Deixar um comentário

22 de abril de 2020

Bioblitz Bingo

During the CIty Nature Challenge, how about a little Bingo??
it is simple: fill a row or column of species by posting them on iNaturalist. When you have a completed a row or column on iNaturalist, just tag your kingpiece observation with "Bingo".
Have fun!!

Download it here: https://static.inaturalist.org/photos/68056155/original.jpg?1587571891

BINGOers here - where are you?:

Posted on 22 de abril de 2020, 04:13 PM by tonyrebelo tonyrebelo | 2 comentários | Deixar um comentário

24 de abril de 2020

How does one organize a Lockdown challenge: Activities for the weekend

Without Bioblitzes, Beach walks, Tidal Pool activities, Greenbelt Picnics, hikes, walks, tours, reptile hunts and other fun activities, how should we structure our weekend for the City Nature Challenge?

We all have our own routines now during lockdown, but personally here is my agenda for the City Nature Challenge

Friday:
Focus:

  • Birds
  • pollinators - prowling around the flowering plants
  • do easies (chameleon, lizard, bees)
    Tasks:

  • midnight start: geckos, moths and snails and slugs (see what has been eating the vegetable seedlings)
  • check bird bath and bird feeders
  • (build a bird feeder or bath if you dont have one)
  • prepare rotten fruit table for flies & beetles
  • prepare checklists

Saturday:
Focus:

  • Goggo hunt (and any Easter eggs missed)
  • Moths
    Tasks:

  • Get sheet and light ready

Sunday:
Focus:

  • Garden picnic
  • Lichens
  • dawn & dusk: overflying birds
  • Night hunt: eyeshine and spiders
    Tasks:

  • evaluate checklist progress and plan
    *make sure Bingo is achieved.

  • Do Polyphagous Borer Beetle survey for atlas
  • Check all Ants done for Ant atlas
    RAIN FORESCAST Evening: not much - Rainfrog Atlas!!!

Monday:
Focus:

  • Mopup
  • Going small - compost heap and woodpiles. Lift pots, stones, logs, etc.
  • signs: mole runs, molerat heaps, poops, feathers anything ...
Posted on 24 de abril de 2020, 07:05 AM by tonyrebelo tonyrebelo | 10 comentários | Deixar um comentário

26 de abril de 2020

SUNDAY EVALUATION

How well are you doing? Have you got your targets yet? You should be about 70-80% of the way now - the last 10% will take all of Monday to get: so time to get at it!

Rain forecast by some, but it wont be more than a splattering in the evening: but perhaps it will get going soon.

Dont forget to look for signs: my Golden Moles started pushing on Saturday: photograph their runnels as evidence.

How to evaluate your progress.

This is mine: it looks complicated but dont worry: just click to open it and then follow instructions:

https://www.inaturalist.org/observations/compare?s=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

OK what is this:
It is the compare tool and I am comparing the two filters in the two lines on top.
That gives me two lists - shown in taxonomical order (i.e. frogs, reptiles, birds, mammals, plants etc.)
*** The top line is the filter for my list so far:
notice it gives me the project (city nature challenge) and my name - substitute your iNat name in its place to see your list.
*** The second line is your target list - you probably dont have one: if you do, just put it in here.
If not: let us create one.
open a new tab and inaturalist (mouse-wheel-click on the iNaturalist name on the top menu bar, and click on the new tab that just opened)
Go to the menu bar
cick explore
chose the map tab.
click the eye (Find your location)
click the + and - buttons to zoom in or out
When you have your suburb (or bigger if lots of observations) on the map,
click the orange "Redo search in Map" button.
Let us be a little more sophisticated, and

Go back to your "Compare" tool tab and in the second line (Titled: Autumn Garden) paste the url (Ctrl-P)
if you copied the "?" then remove it it should start "month ..." - if you copied the entire URL, then delete from "http" until the "?"
hit ENTER (or click anywhere else on the page).
Give iNaturalist a few seconds to compile your filters and compare the lists and you are done.
The first column contains the species that you have seen.
the second column contains those that you have dipped out on for the city nature challenge.
Look for the easy species, work out where in your garden/bacony/home these are likely to be (and the time of day best for them) and get to it
Come: on - get our there - we have lots more still to record!!

[[the list may be ridiculous: those species dotn occur in gardens!! and the following filter to the second filter bar:
&field:Habitat%20(s%20Afr)=Gardens
if you dont have a garden, then rather use
&field:Habitat%20(s%20Afr)=Dwellings

For instance: i get:
https://www.inaturalist.org/observations/compare?s=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%3D

Also today: do lichens, under pot plants and inside your compost heap. Also do Ants. Today will probably be better to pollinators, so go stake out your flowerring plants - those with the most activity: remember it will take about 5 minutes after you arrive and dont move around before you are accepted and activity will return to normal

Tomorrow (after the rains) will be better for under logs and stones. And mopping up.
Now is better for insects: the south easter (or north wester, depending on when this front will actually arrive) will reduce insect activity and blow things around, making photography difficult.

Posted on 26 de abril de 2020, 10:06 AM by tonyrebelo tonyrebelo | 0 comentários | Deixar um comentário

28 de abril de 2020

TUESDAY MORNING BLUES: and now what?

Well done Cape Town!

At present (9am SAST) the 2020 City Nature Challenge is over except for Hawaii.
The scoreboard at present is:
Observations:

  1. Cape Town 31.1k
  2. San Franscisco 28.5k
  3. Houston-Galvaston 24.7k

Species:

  1. Houston-Galveston 2,764
    2 San Francisco 2,595

  2. Cape Town 2,548
  3. Dallas/Fort Worth 2,231

Observers:

  1. San Francisco 2,357
  2. Los Angeles 1,495
  3. Washington 1,444 (Cape Town #7: 997)

So very well done all. We posted a formidable target. And even though we were not allowed to leave our homes except for emergencies and shopping, we have recorded a formidable base of species in our gardens and streets across the city.

SO WHAT Next?
Time to start identifying! Are you willing and able to help?
Then please look at the following 2 minute turtorial of the Identification tool. https://vimeo.com/246153496

What needs to be done?
To get started, look at the tutorial and click this link
https://www.inaturalist.org/observations/identify?quality_grade=needs_id%2Ccasual%2Cresearch&iconic_taxa=unknown&project_id=city-nature-challenge-2020-cape-town&place_id=any&page=5

  1. Our first step is to process all observations without any identification at all. The aim is to post them to where our experts can get started working on them.
    So please post to: Birds, Mammals, Reptiles, Amphibians, Lichens, Fungi. Insects & Spiders. BUT PLEASE, do not make an ID of Plants. Leave the plants for those who can recognize the different plant families as our experts work at family level. So if you recognize a Daisy, or Pea, or Grass, or Protea, or Orchid: that is cool make the IDs. Otherwise leave them unidentified.

  2. NOTE: if we all go to this page, then we will all be doing the same thing. So notice in the url (the blue link) that it says "page 5" - please retype the "5" with a number of your choice (below 50) and click the "enter" key. You will then unlikely to be duplicating someone else's IDs.

That is our task for today. Reduce the unknowns and get IDs ready for the experts, specialists and dedicated Capetonians.

However,
1!. if you still have observations to upload, please make that your top priority
2!. If you are an expert in a group, then please feel free to type in your group in the "species" box of the identify page, and start working on those immediately. We will refine the url tomorrow, but today it is a matter of checking the IDs that have been made during the rush and excitement of uploading - and checking that American names have not been incorrectly given to our plants and animals by the AI.

Good luck.
Tomorrow at 11am, we will have a webinar for those with problems or issues. More details later.
Otherwise please feel free to ask questions below.

Posted on 28 de abril de 2020, 08:40 AM by tonyrebelo tonyrebelo | 11 comentários | Deixar um comentário

29 de abril de 2020

Identification of observations: the process

OK: I trust that we are all doing our identifications! A great Lockdown activity.

Our strategy is simple:

Wednesday: clear the backlog of observations that have no identifications at all.
To do this please:

  1. Make IDs to "family level" in plants. Animals are not an issue (birds, reptiles, frogs, moths, bugs, butterflies, fish, spiders, etc. are all easy enough). And fungi are too diffcult: just please use Fungi, except for Lichens: these should be Lecanoromycetes (just type Lichens and choose this). But for plants, please try and get the families. These should be easy for flowers for Daisies, Peas, Proteas, Vygies, Stonecrops, Aloes (Asphodelaceae), Orchids (we wish), grasses, irids and other iconic groups. Ferns and Mosses are OK "families" as well. If you dont know the family or genus, then just skip it: Do NOT ID them as "Plants" or "Dicots" unless there is no chance that they will ever be identified.
  2. Other tasks to do while doing this:
  3. 2a: look out for superb photographs, outstanding observations and really cool stuff: - for these add the project "Nominations for Observation of the Month".
  4. 2b: Planted stuff - if something is planted or captive - please tick it as such when it has become research grade. (please DO NOT tick it before it is research grade, otherwise it cannot be processed in our work flow)
  5. 2c: Look out for duplicates - please add a comment for duplicates: "This is a duplicate of an another observation of yours: please group observations of the same animal/plant at the same place and time in a single observation"
  6. 2d: Look out for multiple species observations: please add a comment for multipules: "Please separate out each species into its own observation. iNaturalist can only cope with one species per observation. On the web version you can use the "Duplicate option on the EditV" button, but please double-check the locality". And add an ID of "State of Matter: Life" if you want.
  7. 2d: Observations without a picture: please add a comment for blanks: "Please sync your app to upload your pictures. if this was a mistake please delete this"

The link to help with these is:
https://www.inaturalist.org/observations/identify?quality_grade=needs_id%2Ccasual%2Cresearch&iconic_taxa=unknown&project_id=city-nature-challenge-2020-cape-town&place_id=any&page=5
(to avoid us all working on the same page at the same time, replace the "5" on "page=5' with some other number such as "57" - at present there are 166 pages of observations needing identification, but if the page loads as blank, then you have chosen a page number more than there are: choose a smaller number.
((tip: to prevent having to go through the same observations many times, when you finish a page, choose the option "mark all as reviewed". Esp. nearer the end, the same ones will keep on coming up if you dont do this)).

From Tomorrow we will be calling our our experts and more knowledgeable users to change their tack (beginners and higher order helpers can stay on the unidentified observations and clear the last few).
They will start processing the observations that have been identified as "Needs ID" and getting them identified. There will be three levels
** IDs that need confirmation: these will already be identified to species and merely need confirmation. If you are certain of the ID, then please click the "Agree" button. You may also "Agree" tentatively if you know that the person who made the ID is an expert in that group.
** IDs that are wrong: please fix these. Even if it means taking the ID back to genus or family level (or even plants). Add an ID with your best effort, and select the "red" option: 'it is wrong as it is'
** IDs to family or generic level that need species level IDs. Please add the IDs.
https://www.inaturalist.org/observations/identify?project_id=city-nature-challenge-2020-cape-town&place_id=any
or if you dont want to confirm species level IDs, but just work above the species level, then use this rather:
https://www.inaturalist.org/observations/identify?quality_grade=needs_id%2Cresearch%2Ccasual&project_id=city-nature-challenge-2020-cape-town&lrank=genus&place_id=any

Initially we will just do blanket IDs, but once experts have done a few dozen IDs, they can start "cherry picking" out species that have not yet been identified, and leave the more common species to the more generalist identifiers.
We will coordinate this as we watch our progress.
To help with the finer level IDs, please use this url:
insert your group in the species box (e.g. Birds or Acanthaceae or Lichens - currently it shows Daisies):
https://www.inaturalist.org/observations/identify?project_id=city-nature-challenge-2020-cape-town&taxon_id=47604&place_id=any

If we have time at the very end, we will trawl for false IDs and fix these. But that is more complicated.
And also tackle the Garden Plants needing identification:
https://www.inaturalist.org/observations/identify?quality_grade=casual&project_id=city-nature-challenge-2020-cape-town&captive=true&lrank=genus&place_id=any

Posted on 29 de abril de 2020, 08:43 AM by tonyrebelo tonyrebelo | 5 comentários | Deixar um comentário

30 de abril de 2020

Identification of observations: Phase II

We have now come to the end of Phase I. All the observations now have an identification at some level

Mopping up will continue. If you could help to get these down to the level at which our specialists can process them it will be appreciated.
No IDs yet - only make an ID if you recognize it - otherwise leave it without an ID. - 390
Useless IDs (too vague) - can you make these finer? To family, genus or species?. - - 470

But our main work now moves to getting identifications to the species level. This is the most formidable task, and needs to be done group for group.
If you know of any specialists who can help, please enlist them this weekend and send them the link.
Statistics for the groups will be provided in the comments, and links provided here with the current needs
Updated regularly! Last update -20:00-Sat. (in brackets Thursday 23:00) -
DEADLINE: midnight at end of 3 May 2020
((click to activate))

So, please choose your group:
Vertebrates:
Birds - 149 (204)
Mammals - 20 (27)
Herps - 22 (34)
Fish - 26 (26) ATTENTION

Invertebrates:
Molluscs - 98 (161) (includes marine ATTENTION)
Spiders - 672 (659) ATTENTION
Insects - 2,659 (2,675) {please add your group to refine search} ATTENTION

Fungi & Other:
Fungi (incl. Lichens) - 267 (235)
Other - 1 (1)

Plant Families: (with more than 50 IDs outstanding)
Stonecrops (Crassulaceae) - 759 (843)
Daisies (Asteraceae) - 620 (674)
Aloes (Asphodelaceae) - 610 (751) ATTENTION
Mints & Plectranthus (Lamiaceae) - 439 (489)
Asparagaceae (Yucca, Agave, Asparagus) - 314 (326)
Vygies (Aizoaceae - Mesembryanthemaceae) - 313 (327)

Lilies (Amaryllidaceae) - 204 (210)
Pelargonium (Geraniaceae) - 188 (203)
Bouganvilleas - 178 (139)
Bromeliads & Airplants - 177 (190)
Rosaceae (Roses) -167 (170)
Cacti (Cactaceae) - 148 (183)
Hibiscus (Malvaceae) - 134 (158)

Conifers (Pinopsidae) - 127 (131)
Grasses (Poaceae) - 123 (147)
Gums & Myrtles (Myrtaceae) - 111 (129)
Peas (Fabaceae) - 106 (114)
Proteaceae (Proteas) - 114 (175)
Cape Reeds (Restionaceae) - 109 (123)
Aroids (Araceae) - 103 (109)

Orchids -96 (100)
Sedges (Cyperaceae) - 91 (117)
Irises (Iridaceae) -90 (96)
Stapelias & Frangipangi (Apocynaceae) - 80 (106)
Tomatoes & Nightshades (Solanaceae) - 75 (93)
Mosses - 73 (69) ATTENTION
Palms - 68 (97)
Buchus & Lemons (Rutaceae) - 55 (78)

Use this and add your family to check your own special group:
add your family or genus

Almost-Done
(Blackeye Susans) Acanthaceae - 15 (56)
Craneflowers - 7 (90)
Spekboom - 3 (151)

Posted on 30 de abril de 2020, 10:10 PM by tonyrebelo tonyrebelo | 12 comentários | Deixar um comentário

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