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All years Observers: 1405 Cards: 103413 Records: 5464066 Incidentals: 425756 Pentads: 12935 (74.69%)
2014 Observers: 396 Cards: 4843 Records: 257070 Incidentals: 21853 Pentads: 2343 (13.53%)
AutumnMAP Observers: 284 Cards: 1993 Records: 100927 Incidentals: 7769 Pentads: 1247 (7.20%)
Latest News
SABAP2 doing awesomely in 2014; today we celebrate the milestone of a "MiniProject"

There is one thing that SABAP2 does better than any similar project, anywhere on this planet

You are awesome, Team SABAP2. You have made 20000 checklists for the Western Cape

Citizen Science Week : Saturday 8 March to Sunday 16 March

SABAP2 up to the end of February, 2014

SABAP2 at the end of the first half of February 2014

One hundred thousand checklists in the SABAP2 database: awesome milestone, well done, Team

Be part of the "Kruger Green Team"

These Four Degrees are on the cusp of a lot of milestones

Increasing in abundance, but not in range – Dark-capped Bulbul

How did we get along in the first half of November?

SABAP1 vs SABAP2: the Rock Dove aka Feral Pigeon

How to submit records to the Virtual Museums

SABAP2 strides ahead in October

Five million records

Project progress, first half of October


September progress with SABAP2

Intergovernmental Panel on Climate Change report released

Barberspan conference 28 November – 3 December 2013

Weaver Wednesday [66]: Sao Tome Weaver

Weaver Wednesday [65]: Black-necked Weaver

Sappi TREE TUESDAY, and today we are featuring the Knobbly Creeper

Today is Sappi TREE TUESDAY! The Weeping Sage Buddleja auriculata

Weaver Wednesday: Village Weaver

Public Lecture Wednesday 18 September "The metamorphosis of the butterfly atlas"

2000 up on Facebook

"Citizens who advance science"

This part of South Africa is especially important for annual coverage!

SpringMAP 2013

Weaver Wednesday: Cinnamon Weaver

Bring the trumpets out of the cupboard! Sound the fanfare

Virtual Museum records

Twenty years of CWACing the Bot River Estuary

Atlas bash to Loeriesfontein, Northern Cape, 8-11 August 2013

Save the date: 20-21 July 2013, SABAP2 workshop, Port Elizabeth

MyBirdPatch workshop: Intaka Island Enviro-Centre, Cape Town, Sat 8 June, 09:00 - 13:00

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

Important new paper: One-third for the birds

Les Underhill (2011-12-23)

One-third for the birds

Two of the Animal Demography Unit's Honorary Research Associates, Rob Crawford and Jean-Paul Roux, are co-authors of an important paper published in the leading journal Science today. It provides critical guidance on how fish stocks should be managed in such a way that there is enough left over for the seabirds.

"Fishing can have devastating effects on seabirds. Not only do they get snagged on hooks and tangled in nets, but chronic overfishing can deprive the birds of their prey—the same small fish that boats are catching. Now a study has identified what appears to be a universal threshold for danger: when the biomass of so-called forage fish drops below one-third of its maximum, seabirds of many species start to have fewer chicks.

"'This is one of the most important seabird papers to be published in some time,' comments conservation biologist Dee Boersma of the University of Washington, Seattle, who was not involved in the research. The findings demonstrate the widespread reliance of seabirds on small forage fish, she says. To protect the birds, the papers' authors call for lower harvest levels of forage fish. 'The problem remains that most fisheries are not properly managed and controlled,' says co-author Philippe Cury of the Institute of Research for Development in Sète, France. Worldwide, about 25% of forage fish stocks have collapsed, he adds.

These are the first two paragraphs of the report that appears on the website of the journal Science. Read the full report here.

The abstract of the paper reads like this: "Determining the form of key predator-prey relationships is critical for understanding marine ecosystem dynamics. Using a comprehensive global database, we quantified the effect of fluctuations in food abundance on seabird breeding success. We identified a threshold in prey (fish and krill, termed “forage fish”) abundance below which seabirds experience consistently reduced and more variable productivity. This response was common to all seven ecosystems and 14 bird species examined within the Atlantic, Pacific, and Southern Oceans. The threshold approximated one-third of the maximum prey biomass observed in long-term studies. This provides an indicator of the minimal forage fish biomass needed to sustain seabird productivity over the long term." The full reference is Cury PM, Boyd IL, Bonhommeau S, Anker-Nilssen T, Crawford RJM, Furness RW, Mills JA, Murphy EJ, Österblom H, Paleczny M, Piatt JF, Roux J-P, Shannon L.J, Sydeman WJ 2011. Global seabird response to forage fish depletion – one-third for the birds. Science 334: 1703–1706.

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