Video freeze whilst screen sharing in Zoom, on macOS Big Sur? Reinstall Zoom and enable “Use TCP connection for screen sharing”

Update – this note explains this will be resolved with the next Zoom for Mac update (after Ver 5.5.4). Thanks Kenneth Pinto!

My animal behaviour videos froze during the past two lectures. The problem first happened mid-lecture in mid-February which sure had me scrambling, as the short videos are integral to the lesson. This morning the freezing more polite surfaced during the pre-lecture video. I plan a short, relevant video as an AV check with students, and they reported the frozen video.

On both occasions, I was on my wired iMac with BigSur 11.2.2 and I switched to my wireless laptop on macOS Big Sur 11.3 beta and continued the lesson without a hitch [update: the problem was with wired macs]. A search revealed the solution: macOS Reddit user @portzebie was told by Zoom Support to i) uninstall and reinstall the Zoom desktop client, and then ii) go to Zoom preferences > Share Screen > Advanced options > enable “Use TCP connection for screen sharing”. Oh, and iii) restart your Mac!

This seems to have worked. Restart your Mac if all is not well at first.

I think tere are some other hiccups with Keynote (“Play” versus “Play in Window”) and with Zoom Screen sharing (enable “Optimise for Video Clip” or not) still. I shall sort that out before my next lecture.

But let me me restart that iMac first.

What can I do for nature and the environment in Singapore?

Why for starters, check out these pages:

NParks has a whole load of opportunities listed on their Volunteer Page. The good thing is you are now required to select a home-base; with this association, you wi be notified if oppotunities near where you live. If interested in conservation activities, you will have to attend an orientation before volunteering, which wil be helpful.

Lepak in SG has organised a local directory of nature and environment groups: https://lepakinsg.wordpress.com.

Our volunteer group Facebook pages highlight opportunities offered by others in the community, so will help you find your calling!

• NUS Toddycats – fb.com/nustoddycats
• International Coastal Cleanup Singapore – fb.com/iccsg

The Biodiversity Challenge 2021 begins!

Preparation of the next generation for participation in conservation is enhanced by a programme initiated in 2017 by the Biodiversity Roundtable, and is called the Biodiversity Friends Forum. And this year, we launched the annual Biodiversity Challenge 2021 over three February mornings of Zoom induction workshops.

We did manage a lot in two hours, and ported the wildlife in Singapore game to a jamboard exercise. It’s less interactive but we managed. And we wil catchup on the more intimate 1:7 field trips allowed for in parks in Singapore. Members of the Biodiversity Roundtable have chipped in with many offerings and will get to know these younglings too!

To ensure the ball got rolling quickly, we listed two activities in the first week: a night walk on the Rail Corridor (South) which includes geography and land use, in addition to a glimpse at the night fauna, and Sapling Protection Action at the coastal forest restoration site at Kranji Coastal Nature Park.

I’m really pleased about the number of BFF Alumni joined the Organising Committee to add valuable help and ideas. Facilitators at the Induction Workshop were mostly all Alumni as well, while Seniors and Mentors of the Biodiversity Roundtable dropped by to say hello to Participant in the Breakout Rooms. I was so glad they were able to do that at the last minute.

Participants can expect to see more of Alumni, Seniors and Mentors at the nature walks, talks and workshops lined up for them in the five months ahead. The BFF series is about building communities as much as awareness and I am looking forward to gettign to know some of them better with time, and learning about their own Acts of Nature!

We will not see big gatherings anytime soon, of course. Already the induction workshop last year was run as parallel sessions in two NUS venues complete with mitigation, due to the threat of COVID-19. Things got much more serious and even the field trips had to be cancelled and negagament driven onine. Our induction workshop is run on Zoom, for all of two hours, but we will complete a second half in March after participants have experienced guided field trips – this is a good thing!

Sat 27 Feb 2021: 4.00pm – 6.00pm – Join NUS Toddycats for Sapling Protection Action @ Sungei Buloh Wetland Reserve!

What is Sapling Protection Action?

Why we do it?
This is part of NParks’ exciting coastal restoration plan at Sungei Buloh Wetlands Reserve at Kranji Coastal Nature Park. Coastal vegetation were mostly cleared by settlements and reservoir construction by the 1970’s. With the extention of SBWR to the western edge of Kranji reservoir in 2014, this is an opportunity to practice habitat enhancement: soil preparation, tree-planting and sapling protection.

How do we participate??
Join is for the next session on Sat 27 Feb 2021. You will receive details about where to meet, your Team Leader and attire (long pants and covered shoes). We will provide gloves (bring your own if you have them) and tools. LImited spaces due to COVID-19 mitigation. Register on Eventbrite at https://tinyurl.com/kcnpspa-27feb2021

The Minister of National Development responds in parliament about the fate of Green Spaces in Singapore

About every decade, the constant pressure of development requires a renewal of the understanding of the fate of green spaces in Singapore. Not just by the public, and nature community, but also all of the purposeful agencies of government. The exercise has become an increasingly vociferous, facilitated by the internet and now social media, and this time too, probably by the introspection COVID-19 forced upon us.

So much so, this has been a hotly discussed topic about nature and the environment in our recent history. Stimulated no less by the humble ex-kampung sites of Ulu Pandan and Clementi. The evolving mechanisms of engagement by government have embraced new voices, and we can expect more dialogue about decisions.

Minister Desmond Lee’s speech in parliament today, in response to questions posed by MPs, is certainly required reading. The issues are no longer the substance of private sessions or university classes but being aired in parliament.

I am glad to see this. Participation can be difficult, as can be engagement. But it is also critical to our way ahead.

MND: “Oral Answer by Ministry of National Development on Development Plans for Green Spaces, Feb 1, 2021” [link; pdf]

“A High-Resolution Map of Singapore’s Terrestrial Ecosystems” (Saw, Yee & Richards, 2019)

Gaw, L. Y. F., Yee, A. T. K., & Richards, D. R. (2019). A high-resolution map of Singapore’s terrestrial ecosystems. Data, 4(3) [link].

The classified map of high resolution images of Singapore from 2003 to 2018 is shown in Figure 1. The map has a maximum spatial resolution of 30 cm (as per the panchromatic resolution of WorldView-3). The area of each map class is shown in Table 1. The total non-marine area classified was 742.22 km2, of which 359.06 km2 (49 %) was covered by vegetation and 46.63 km2 (6 %) was covered with surface freshwater features. The remaining area was unvegetated land; consisting of built-up impervious sDuatrafa20c1e9s, 4o,f121684.10 km2 (38 %) and pervious surfaces of 53.00 km2 (7 %).

Grab the PDF of the paper for a better resolution than the image here.

Wild City – six 45-mins episodes though which to discover wildlife in Singapore

This series about wildlife in Singapore has excellent footage, lovingly shot by the team from Beach House Pictures of whom Claire Clements proved to be an inspiring naturalist and wildlife filmmaker. And as an additional treat many episodes were narrated by David Attenborough.

The Wild City (Singapore) episodes are mostly on Youtube as well now (remember to select HD before watching):

1. Wild City: Urban Wild (2015) [link]
2. Wild City: Hidden Wild (2015) [link]
3. Wild City: Islands (2016) [link]
4. Wild City: Forest Life (2019) [link]
5. Wild City: Secret World (2019) [CNA link]
6. Wild City: River World (2020) [link]

Do also catch wildlife animal rescues charity ACRES at work with Wild City Rescue (8 episodes) on MeWatch [link]

Share your memories of Prof D H “Paddy” Murphy, RIP

We announced the peaceful departure of Prof D H “Paddy” Murphy last Saturday, and have been touched by the memories everyone has shared. We would love to hear your stories of learning and exploring with him and invite you to use the form at https://tinyurl.com/paddymurphy-rip.

We will share the stories with his family and with the community through the NUS Biodiversity Crew (blog), which includes the many students past and present.

About Singapore’s primary & secondary forests (NParks video feat Shawn Lum)

This is an excellent video by NParks featuring forest ecologist Dr Shawn Lum, “Revealing Our Roots: Trees of Singapore”, who elegantly explains Singapore’s primary & secondary forests. I love the love the old footage interleaved into the explanation too.

As we gear up with the One Million Trees movement, it is important to appreciate the background against which we must sustain the 10-year effort.

This is now required viewing for all my students…

CLIck to join the One Million trees movement!

Wed 23 Sep 2020: 8.00pm – Chatting with International Coastal Cleanup coordinators from Brunei & Malaysia and our global coordinator, Ocean Conservancy!

After chatting with local inspirations in the recent webinar, we are now very pleased to enjoy an evening with national coordinators in neighbouring Malaysia and Brunei, Theresa and Eliza, who will share how they have promote marine protection during this COVID-19 pandemic.

And we are all very pleased to welcome Sarah Kollar from our intentional coordinator, Ocean Conservancy, to our time zone to share global perspectives! Sarah has been conversing with national coordinators for months during this pandemic as everyone figured out how best to handle coastal cleanups and education about marine environment issues during the pandemic.

Register for the Zoom session at https://tinyurl.com/iccs-chat23sep2020, and see you on Wednesday evening!