Flamingo Newsletter 14, 2006
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Tectonic and Climatic Control on Evolution of Rift Lakes in the Central Kenya Rift, East Africa
Quaternary Science Reviews 28 (2009) 2804–2816 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Tectonic and climatic control on evolution of rift lakes in the Central Kenya Rift, East Africa A.G.N. Bergner a,*, M.R. Strecker a, M.H. Trauth a, A. Deino b, F. Gasse c, P. Blisniuk d,M.Du¨ hnforth e a Institut fu¨r Geowissenschaften, Universita¨t Potsdam, K.-Liebknecht-Sr. 24-25, 14476 Potsdam, Germany b Berkeley Geochronology Center, Berkeley, USA c Centre Europe´en de Recherche et d’Enseignement de Ge´osciences de l’Environement (CEREGE), Aix en Provence, France d School of Earth Sciences, Stanford University, Stanford, USA e Institute of Arctic and Alpine Research, University of Colorado, Boulder, USA article info abstract Article history: The long-term histories of the neighboring Nakuru–Elmenteita and Naivasha lake basins in the Central Received 29 June 2007 Kenya Rift illustrate the relative importance of tectonic versus climatic effects on rift-lake evolution and Received in revised form the formation of disparate sedimentary environments. Although modern climate conditions in the 26 June 2009 Central Kenya Rift are very similar for these basins, hydrology and hydrochemistry of present-day lakes Accepted 9 July 2009 Nakuru, Elmenteita and Naivasha contrast dramatically due to tectonically controlled differences in basin geometries, catchment size, and fluvial processes. In this study, we use eighteen 14Cand40Ar/39Ar dated fluvio-lacustrine sedimentary sections to unravel the spatiotemporal evolution of the lake basins in response to tectonic and climatic influences. We reconstruct paleoclimatic and ecological trends recor- ded in these basins based on fossil diatom assemblages and geologic field mapping. -
6-A John James Audubon, American Flamingo, 1838
JOHN JAMES AUDUBON [1785–1851] 6 a American Flamingo,1838 American Flamingo is one of the 435 hand-colored engravings that River, a major flyway for migratory birds, and eventually wan- make up John James Audubon’s monumental Birds of America, dered farther from home to comb the American frontier for issued in four volumes between 1826 and 1838. The massive unrecorded species. publication includes life-size representations of nearly five hundred Audubon’s procedure was to study and sketch a bird in its natural species of North American birds. Although Audubon was not the habitat before killing it carefully, using fine shot to minimize dam- first to attempt such a comprehensive catalog, his work departed age. His critical innovation was to then thread wire through the from conventional scientific illustration, which showed lifeless spec- specimen, allowing him to fashion a lifelike pose. He worked in imens against a blank background, by presenting the birds as they watercolor, and had completed some four hundred paintings appeared in the wild. When his pictures were first published, when he decided to publish them as a folio of prints. Failing to find some naturalists objected to Audubon’s use of dramatic action and support in Philadelphia, he sailed for England, where he became pictorial design, but these are the qualities that set his work apart lionized as “The American Woodsman.” The engraving firm and make it not only an invaluable record of early American Robert Havell and Son took on the challenge of reproducing wildlife but an unmatched work of American art. Audubon’s paintings on copper plates and tinting the resulting John James Audubon was born in Haiti and educated in France, black-and-white prints by hand. -
Flamingo ABOUT the GROUP
Flamingo ABOUT THE GROUP Bulletin of the IUCN-SSC/Wetlands International The Flamingo Specialist Group (FSG) was established in 1978 at Tour du Valat in France, under the leadership of Dr. Alan Johnson, who coordinated the group until 2004 (see profile at www.wetlands.org/networks/Profiles/January.htm). Currently, the group is FLAMINGO SPECIALIST GROUP coordinated from the Wildfowl & Wetlands Trust at Slimbridge, UK, as part of the IUCN- SSC/Wetlands International Waterbird Network. The FSG is a global network of flamingo specialists (both scientists and non- scientists) concerned with the study, monitoring, management and conservation of the world’s six flamingo species populations. Its role is to actively promote flamingo research and conservation worldwide by encouraging information exchange and cooperation amongst these specialists, and with other relevant organisations, particularly IUCN - SSC, Ramsar, WWF International and BirdLife International. FSG members include experts in both in-situ (wild) and ex-situ (captive) flamingo conservation, as well as in fields ranging from field surveys to breeding biology, diseases, tracking movements and data management. There are currently 165 members around the world, from India to Chile, and from France to South Africa. Further information about the FSG, its membership, the membership list serve, or this bulletin can be obtained from Brooks Childress at the address below. Chair Assistant Chair Dr. Brooks Childress Mr. Nigel Jarrett Wildfowl & Wetlands Trust Wildfowl & Wetlands Trust Slimbridge Slimbridge Glos. GL2 7BT, UK Glos. GL2 7BT, UK Tel: +44 (0)1453 860437 Tel: +44 (0)1453 891177 Fax: +44 (0)1453 860437 Fax: +44 (0)1453 890827 [email protected] [email protected] Eastern Hemisphere Chair Western Hemisphere Chair Dr. -
Trinidad & Tobago II 2019 BIRDS
Field Guides Tour Report Trinidad & Tobago II 2019 Dec 27, 2019 to Jan 5, 2020 Tom Johnson For our tour description, itinerary, past triplists, dates, fees, and more, please VISIT OUR TOUR PAGE. Each one of those red dots is a Scarlet Ibis - and look closely, you'll see a strip of pink from the American Flamingo flock at the bottom. This was our evening scene at Caroni Swamp. Photo by group member Delle Daniels. The island nation of Trinidad and Tobago provides an accessible bounty of neotropical wildlife with comfortable accommodation. Our holiday tour this year was no exception – we spent five nights at the famed Asa Wright Nature Centre in Trinidad and two nights on the sandy shores of the Atlantic on Tobago. We drank coffee and tea in the morning as the rising sun brought legions of hummingbirds and honeycreepers to the feeding station below the Asa Wright veranda, studied the mating displays of the odd Bearded Bellbird and transforming White-bearded Manakin, sought the stunning Blue-and- yellow Macaw at Nariva Swamp, enjoyed the waves of brilliant Scarlet Ibis ripple past at Caroni Swamp, and watched with excitement as Magnificent Frigatebirds tail-chased Red-billed Tropicbirds over the blue water below Little Tobago Island. There was something for everyone – for those who were taken by Neotropical birding challenges, there were Chestnut-collared and Lesser Swallow-tailed swifts to pick out of the skies above the Arima Valley and a Gray-throated Leaftosser skulking in the shadows. For those more attracted to spectacles of movement and color, we turned to the diminutive Tufted Coquettes of Asa Wright’s gardens and the jaw-droppingly pink American Flamingos striding below the river of Scarlet Ibis at Caroni Swamp. -
Wetland Birds in the Recent Fossil Record of Britain and Northwest Europe John R
Wetland birds in the recent fossil record of Britain and northwest Europe John R. Stewart 18. Dalmatian Pelican Pelecanus crispus, Deep Bay, Mai Po, Hong Kong, February 1995. Geological evidence suggests that Dalmatian Pelicans bred in Britain, and in other western European countries (including The Netherlands and Denmark), prior to and during the Iron Age. Ray Tipper. ABSTRACT Wetland habitats in Britain and other parts of western Europe have been severely depleted during the latter part of the Holocene owing principally to drainage and land reclamation. Changes in the distribution of a number of wetland bird species can be gauged from archaeological and geological site records of larger birds, whose remains are generally better preserved. Key species are discussed here, including a heron Nycticorax fenensis and a crane Grus primigenia, two extinct species named on possibly uncertain fossil evidence. We can let our minds wander back to the misty realms of fifteen hundred years ago, to a wonderful Britain which was alive with bird song from coast to coast, which sheltered wolves, bears and boars in its dark woodlands, cranes in its marshes, bustards on its heaths and beavers by its streams, and we can visualize the great pink pelican sweeping on its huge pinions over the reedy waterways which then penetrated by secret paths into the very heart of what is now Somerset. (Whitlock, 1953) © British Birds 97 • January 2004 • 33-43 33 Wetland birds in the recent fossil record f all the major habitats in northwest species, including Mute Swan Cygnus olor and Europe, wetlands may have been the Common Crane, may have become physically Omost severely depleted during the smaller owing to habitat impoverishment. -
GREATER and LESSER FLAMINGOS Phoenicopterus Ruber and Phoeniconaias Minor
GREATER AND LESSER FLAMINGOS Phoenicopterus ruber and Phoeniconaias minor Greater and Lesser Flamingos © Cliff Buckton © P & H Harris Lesser Flamingo The Lesser Flamingo Phoeniconaias minor is the smallest of the world's five flamingo species. It occurs primarily in the Rift Valley lakes of East Africa with about 4 to 5 million birds estimated, but also in small populations in Namibia/Botswana (40,000), Mauritania/Senegal (15,400), Ethiopia (8,300). The alkaline lakes of the Rift Valley are the primary feeding areas for the East Africa population. During non-breeding periods these lakes often hold almost the entire population. Huge feeding flocks of 1-2 million birds frequently gather on lakes Bogoria and Nakuru, creating one of the most stunning wildlife spectacles in the world. Although it is still the most numerous of the five species, the Lesser Flamingo is classified as globally "near threatened" due primarily to its dependence on a limited number of unprotected breeding sites and threats of proposed soda-ash mining and hydro-electric power schemes on the main breeding lakes. The question of whether there is occasional interchange between the East African and southern African populations has yet to be resolved definitely, but considerable circumstantial evidence has now been assembled to show that East African Lesser Flamingos probably do fly to Botswana to breed during periods when the Lake Makgadikgadi Salt Pans are flooded. Their migration routes, flight range and stopover places (if any) are still unknown. It is now known that Lesser Flamingos do fly during the day, at great heights, well above the normal diurnal movement of eagles, their main aerial predator. -
Flamingo Newsletter 17, 2009
ABOUT THE GROUP The Flamingo Specialist Group (FSG) is a global network of flamingo specialists (both scientists and non-scientists) concerned with the study, monitoring, management and conservation of the world’s six flamingo species populations. Its role is to actively promote flamingo research, conservation and education worldwide by encouraging information exchange and cooperation among these specialists, and with other relevant organisations, particularly the IUCN Species Survival Commission (SSC), the Ramsar Convention on Wetlands, the Convention on Conservation of Migratory Species (CMS), the African-Eurasian Migratory Waterbird Agreement (AEWA), and BirdLife International. The group is coordinated from the Wildfowl & Wetlands Trust, Slimbridge, UK, as part of the IUCN-SSC/Wetlands International Waterbird Network. FSG members include experts in both in-situ (wild) and ex-situ (captive) flamingo conservation, as well as in fields ranging from research surveys to breeding biology, infectious diseases, toxicology, movement tracking and data management. There are currently 286 members representing 206 organisations around the world, from India to Chile, and from France to South Africa. Further information about the FSG, its membership, the membership list serve, or this bulletin can be obtained from Brooks Childress at the address below. Chair Dr. Brooks Childress Wildfowl & Wetlands Trust Slimbridge Glos. GL2 7BT, UK Tel: +44 (0)1453 860437 Fax: +44 (0)1453 860437 [email protected] Eastern Hemisphere Chair Western Hemisphere Chair Dr. Arnaud Béchet Dr. Felicity Arengo Station biologique, Tour du Valat American Museum of Natural History Le Sambuc Central Park West at 79th Street 13200 Arles, France New York, NY 10024 USA Tel : +33 (0) 4 90 97 20 13 Tel: +1 212 313-7076 Fax : +33 (0) 4 90 97 20 19 Fax: +1 212 769-5292 [email protected] [email protected] Citation: Childress, B., Arengo, F. -
References.Qxd 12/14/2004 10:35 AM Page 771
Ducks_References.qxd 12/14/2004 10:35 AM Page 771 References Aarvak, T. and Øien, I.J. 1994. Dverggås Anser Adams, J.S. 1971. Black Swan at Lake Ellesmere. erythropus—en truet art i Norge. Vår Fuglefauna 17: 70–80. Wildl. Rev. 3: 23–25. Aarvak, T. and Øien, I.J. 2003. Moult and autumn Adams, P.A., Robertson, G.J. and Jones, I.L. 2000. migration of non-breeding Fennoscandian Lesser White- Time-activity budgets of Harlequin Ducks molting in fronted Geese Anser erythropus mapped by satellite the Gannet Islands, Labrador. Condor 102: 703–08. telemetry. Bird Conservation International 13: 213–226. Adrian, W.L., Spraker, T.R. and Davies, R.B. 1978. Aarvak, T., Øien, I.J. and Nagy, S. 1996. The Lesser Epornitics of aspergillosis in Mallards Anas platyrhynchos White-fronted Goose monitoring programme,Ann. Rept. in north central Colorado. J. Wildl. Dis. 14: 212–17. 1996, NOF Rappportserie, No. 7. Norwegian Ornitho- AEWA 2000. Report on the conservation status of logical Society, Klaebu. migratory waterbirds in the agreement area. Technical Series Aarvak, T., Øien, I.J., Syroechkovski Jr., E.E. and No. 1.Wetlands International,Wageningen, Netherlands. Kostadinova, I. 1997. The Lesser White-fronted Goose Afton, A.D. 1983. Male and female strategies for Monitoring Programme.Annual Report 1997. Klæbu, reproduction in Lesser Scaup. Unpubl. Ph.D. thesis. Norwegian Ornithological Society. NOF Raportserie, Univ. North Dakota, Grand Forks, US. Report no. 5-1997. Afton, A.D. 1984. Influence of age and time on Abbott, C.C. 1861. Notes on the birds of the Falkland reproductive performance of female Lesser Scaup. -
2019 FSG Report
IUCN SSC Flamingo Specialist Group 2019 Report Cathy King Paul Rose Co-chairs Mission statement tion scientists and flamingo biologists will result Cathy King (1) The mission statement of the WI-IUCN SSC in increased exposure for these species, and Paul Rose (2) Flamingo Specialist Group (FSG) is to actively therefore, a better chance of secured popula- promote flamingo research and conservation tions for the future. We hope that by continuing Red List Authority worldwide by developing conservation action to support the work of scientists and flamingo biologists in the field, the conservation status BirdLife International plans for the most threatened species, and by encouraging information exchange and coop- of all six species does not deteriorate, and that those species currently Vulnerable or Near Location/Affiliation eration amongst flamingo specialists, and Threatened can be more secured in their habi- (1) Zoo de Lagos, Portugal with other relevant organisations, particularly tats, so that future assessments of populations (2) WWT Slimbridge Wetland Centre, UK the IUCN Species Survival Commission (SSC), Wetlands International, Ramsar Convention, show an upward trend in numbers, rather than a decline. The good work currently undertaken Number of members WWF International and BirdLife International. with the Andean and Puna Flamingos (Phoen- 196 icoparrus andinus and P. jamesi, showing stable Projected impact for the 2017-2020 population trends) needs to be monitored, as quadrennium Social networks current Red Lists assessments suggest poten- Facebook: Flamingo Specialist Group By the end of 2020, we hope to have succeeded tial declines due to past poor breeding success Twitter: @FlamingoSpecGrp in our aims of re-launching the FSG website and human-caused impacts on populations. -
The Bog Haunter
TTHHEE BBOOGG HHAAUUNNTTEERR the newsletter of the Friends of the Cedarburg Bog Volume 4, Number 3 Summer, 2009 IN THE STRING BOG’S WATER How do they cope? Life in the “poor fen, the Cedarburg Bog is not The center of the Cedarburg Bog Cedarburg Bog isn’t for sissies. The mineral-rich. wetland is occupied by a string bog, leaves of bog plants may have fewer also called a “patterned bog” or a pores (stomata), limiting water loss. Its pH, overall, is neutral (around 7) “ribbed fen.” It is characterized by Leaves may be small and thick, or to slightly alkaline. Within the string alternating low, wet swales, packed they may have waxy coverings, bog, the mounds of sphagnum moss with sedges and wildflowers, and undersides that are coated with are acidic, as are the decaying cedar raised strings - slightly dryer ridges hairs, or edges that are curled under and tamarack needles on the raised of peat that support stunted to ensure that when water is strings; but overall the “hard” tamarack and white cedar. With absorbed by their roots, it is not groundwater seeping in keeps the each step you take toward the center easily lost through the leaves. wetland from turning acidic. Most of the Bog, the plants you pass are Similar adaptations are found in days, the word “current” would be an increasingly challenged by their desert plants. exaggeration. environment. The string bog is home to a variety Springs contribute only a small For plants, the paradoxes of life in of carnivorous plants. Purple pitcher amount of the water held in the Bog, the string bog are two. -
Wetland Mapping of West Siberian Taiga Zone Using Landsat Imagery
1 Biogeosciences Discussions 2 Manuscript: Mapping of West Siberian taiga wetland complexes using Landsat 3 imagery: Implications for methane emissions 4 Author's Reply to Referees #1 and #3 5 6 Dear Editor, 7 This is our author reply to the two Anonymous Referees. We wish to thank both referees 8 for their time and care in providing comments on our manuscript. We will answer each in 9 turn beginning with Referee #1. Our comments are presented in dark blue font. Each 10 Anonymous Referee's original comments are in black. 11 12 Response to the first referee 13 1. The authors' corrections have substantially enhanced the presentation: the methodology 14 section can be more easily followed; there is significantly more clarity and detail 15 throughout the manuscript. Overall, the text and language improved considerably and 16 it’s now clearer than before how the results are linked to the objectives of the work. I 17 have only a few comments for things to be modified at this point… The newly 18 developed wetland map is a major improvement relative to prior maps and there should 19 be broad interest in its use. 20 Thank you for high evaluation of the manuscript and for help in improving it. 21 We tried to answer all questions from the report. 22 2. Please rerun the document through a grammar check or have a copy editor check the 23 language. As authors noticed, there are still issues with the language. 24 We will use Copernicus English language copy-editing service as a next step 25 before the publication. -
Biogeochemistry of Kenyan Rift Valley Lake Sediments
Geophysical Research Abstracts Vol. 15, EGU2013-9512, 2013 EGU General Assembly 2013 © Author(s) 2013. CC Attribution 3.0 License. Biogeochemistry of Kenyan Rift Valley Lake Sediments Sina Grewe (1) and Jens Kallmeyer (2) (1) University of Potsdam, Institute of Earth and Environmental Sciences, Geomicrobiology Group, Potsdam, Germany ([email protected]), (2) German Research Centre for Geosciences, Section 4.5 Geomicrobiology, Potsdam, Germany ([email protected]) The numerous lakes in the Kenyan Rift Valley show strong hydrochemical differences due to their varying geologic settings. There are freshwater lakes with a low alkalinity like Lake Naivasha on the one hand and very salt-rich lakes with high pH values like Lake Logipi on the other. It is known that the underlying lake sediments are influenced by the lake chemistry and by the microorganisms in the sediment. The aim of this work is to provide a biogeochemical characterization of the lake sediments and to use these data to identify the mechanisms that control lake chemistry and to reconstruct the biogeochemical evolution of each lake. The examined rift lakes were Lakes Logipi and Eight in the Suguta Valley, Lakes Baringo and Bogoria south of the valley, as well as Lakes Naivasha, Oloiden, and Sonachi on the Kenyan Dome. The porewater was analysed for different ions and hydrogen sulphide. Additionally, alkalinity and salinity of the lake water were determined as well as the cell numbers in the sediment, using fluorescent microscopy. The results of the porewater analysis show that the overall chemistry differs considerably between the lakes. In some lakes, concentrations of fluoride, chloride, sulphate, and/or hydrogen sulphide show strong concentration gradients with depth, whereas in other lakes the concentrations show only minor variations.