Making the most of the SABAP2 website - 5: checking your submissions and accessing your ORFs
SABAP2 workshop: Intaka Island, Century City – ths Saturday 11 May, 09h00 – 15h30
SABAP2 reaches 70% coverage in Limpopo
Making the most of the SABAP2 website - 5: checking your submissions and accessing your ORFs
Making the most of the SABAP2 website - 4: finding those gaps and other interesting pentad information!
SABAP2 workshop: Intaka Island, Century City, Sat. 11 May, 9:00 am - 3:30 pm
Weaver Wednesday: Golden Palm Weaver
Colour Rings on Swift Terns
Gravit8 Weaver Wednesday [44]: Speke's Weaver
Gravit8 Weaver Wednesday: Speckle-fronted Weaver
April Aliens – the Common Myna continues its march across the southern African landscape
April Aliens – if the voracious European Shore Crab reaches the Saldanha Bay-Langebaan Lagoon system, well, dot dot dot
The butterfly to think about on Threat Thursday is the Fraternal Widow
The DARK BLUE news – coverage up to 6%
On this Threat Thursday we pay attention to the Black Stork, a species which is not doing well in our region
67%
Threat Thursday in National Water Week : African Marsh Harrier
The GREENest range-change map of all: Southern Masked Weaver
Gravit8 Weaver Wednesday : Southern Red Bishop
Have you seen an unCommon Sandpiper recently?
Today's Snake Sunday focuses on the Western Stripe-bellied Sand Snake
Time for another SCORPION SATURDAY!! Today we are featuring Opistophthalmus lawrencei
Don't delay. Act today. If you have not yet ordered your butterfly atlas, you should do so now
Two-thirds coverage
The good news Threat Thursday: The "Critically Endangered" Waterberg Copper, thought to be extinct, rediscovered on 2 March 2013
The bad news Threat Thursday: The "Critically Endangered" Table Mountain Copper is probably extinct
Threat Thursday moves to the KwaZulu-Natal coast, and contemplates another aristocratic sounding species, the "Critically Endangered" Pickersgill's Reed Frog
A Mad Mammal Monkey for Mad Mammal Monday!
Butterfly atlas Pre-publication offer
Snake Sunday features the Brown House Snake
Southern Bald Ibises building nests on artificial structures
Weaver Wednesday [36]: Taveta Golden Weaver
Does this carnage in this picture pose a threat to butterflies?
14087 waterbirds of 68 species were recorded on the Vaaldam CWAC last Sunday
It's World Pangolin Day!
OdonataMAP: "What a terrific response" says Warwick Tarboton, faced with 1514 records to identify!
Annual Report for the ADU 2012
SummerMAP has 20 days to run
Hey, it is Snake Sunday, and we are celebrating the remarkable Beetz's Tiger Snake
Zimbabwe becomes part of the SABAP2 family
What do these species have in common?
What is happening to the Rock Kestrel?
Weaver Wednesday: Holub's Golden Weaver
Today is Sappi TREE TUESDAY! We are featuring a species that attracts birds, Halleria lucida, the Tree Fuchsia
Sssssssssnake Sunday! Today, Schlegel's Beaked Blind Snake
60 enthusiastic birders attended the SABAP2 workshop in Harare today
Sixty six per cent!!
Twelve million records in the combined database of the bird atlas projects
Doug Harebottle travels to Zimbabwe to do a series of SABAP2 workshops, and welcome Zimbabwe on board
ADU Seminar: Wednesday 25 January: "On Valuing Patches: Estimating Contributions to Metapopulation Systems"
Richard Sherley (2012-01-19)
The next ADU seminar will take place next week on Wednesday 25 January. Thanks to the work happening on the Gylcol System in Zoology, the venue for the seminar will be Lecture Theatre D in the RW James Building. The seminar will be from 13:15 to 14:15, to fit around the ADU’s course at the UCT Summer School.
Our speaker will be Dr James D Nichols, Senior Scientist at the U.S. Geological Survey's Patuxent Wildlife Research Center in Laurel, M.D. He is visiting the ADU during January and will give a seminar entitled "On Valuing Patches: Estimating Contributions to Metapopulation Systems".
Abstract: Forty years ago, Richard Levins (1969, 1970) introduced the concept of the metapopulation, formalizing the relevance of dispersal among local populations, both to those local populations and to the entire system. Ron Pulliam (1988) later considered the relative values of interacting local populations with his definitions of sources and sinks. Here, I follow the framework developed by Runge et al. (2006) and define contribution metrics reflecting the relative and absolute importance of each specific local population to population growth of (1) every other local population and (2) the entire system. I then describe reverse-time multistate capture-recapture models as a natural framework for drawing inferences about these contributions. Finally, I apply these models to a system of 8 local populations of the banner-tailed kangaroo rat (Dipodomys spectabilis) studied by Peter Waser in Arizona. The analysis yields contribution matrices for the entire system, with elements expressing the contributions of young and adults from each local population to adult population change in every other local subpopulation. The modeling permitted inferences about potential sources of variation in these contributions: (1) age, (2) general location of the local population in the system (central vs. peripheral), and (3) relative metapopulation size (years of high density and low density). I also present estimates of the relative contributions of each local population, and of extra-system immigration, to the entire metapopulation system.
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