Cities and Biodiversity Outlook - presented to Central Valley Café ScientifiqueMadhusudan Katti
Slides from a presentation of the UN Converntion on Biodiversity commissioned Cities and Biodiversity Outlook. Madhusudan Katti, one of the lead authors of the CBO, presented this to the Central Valley Café Scientifíque, on 3 December 2012, in Fresno, California.
Fresno Bird Count - an overview for PPSR Workshop at AMNHMadhusudan Katti
An overview of the Fresno Bird Count project presented at the Public Participation in Scientific Research workshop held at the American Natural History Museum. April 7-8, 2011. For more information on the workshop, visit:
http://www.birds.cornell.edu/citscitoolkit/conference/ppsr2011
Cities and Biodiversity Outlook - presented to Central Valley Café ScientifiqueMadhusudan Katti
Slides from a presentation of the UN Converntion on Biodiversity commissioned Cities and Biodiversity Outlook. Madhusudan Katti, one of the lead authors of the CBO, presented this to the Central Valley Café Scientifíque, on 3 December 2012, in Fresno, California.
Fresno Bird Count - an overview for PPSR Workshop at AMNHMadhusudan Katti
An overview of the Fresno Bird Count project presented at the Public Participation in Scientific Research workshop held at the American Natural History Museum. April 7-8, 2011. For more information on the workshop, visit:
http://www.birds.cornell.edu/citscitoolkit/conference/ppsr2011
Residential irrigation as a driver of urban biodiversityMadhusudan Katti
Society for Integrative and Comparative Biology, 2010 Annual Meeting.
Meeting Abstract
67.11 Wednesday, Jan. 6 Resilience in urban socioecological systems: residential water management as a driver of biodiversity KATTI, M*; SCHLEDER, B; California State Univ, Fresno; California State Univ, Fresno mkatti@csufresno.edu
Cities are unique ecosystems where human social-economic-cultural activities prominently shape the landscape, influencing the distribution and abundance of other species, and consequent patterns of biodiversity. The long-term sustainability of cities is of increasing concern as they continue to grow, straining infrastructure and pushing against natural resources constraints. A key resource is water, esp. in the more rapidly urbanizing arid regions. Understanding water management is thus critical for a deeper theoretical understanding of urban ecosystems and for effective urban policy. Landscaping and irrigation at any urban residence is a product of local geophysical/ecological conditions, homeowners’ cultural preferences, socioeconomic status, neighborhood dynamics, zoning laws, and city/state/federal regulations. Since landscape structure and water availability are key determinants of habitat for other species, urban biodiversity is strongly driven by the outcome of interactions between these variables. Yet the relative importance of ecological variables vs human socioeconomic variables in driving urban biodiversity remains poorly understood. Here we analyze data from the Fresno Bird Count, a citizen science project in California’s Central Valley, to show that spatial variation in bird diversity is best explained by a multivariate model including significant negative correlations with % building and grass cover, and positive correlations with interactions between irrigation intensity, median family income, and grass height. We discuss implications of our findings for urban water management policies in general, and for Fresno’s planned switch to metering water use in 2013. Ecological theory, conservation, and urban policy all benefit if we recognize cities as coupled socioecological systems.
Step‐by‐Step Evolution of Vertebrate Blood Coagulation Madhusudan Katti
Department of Biology, Consortium for Evolutionary Studies & Tri Beta Biological Honor Society, California State University, Fresno present:
Step‐by‐Step Evolution of Vertebrate Blood Coagulation
by
Dr. Russell F. Doolittle
Dept. Chemistry & Biochemistry and Molecular Biology , University of California, San Diego
Abstract
The availability of whole genome sequences for a variety of vertebrates is making it possible to reconstruct the step-by-step evolution of complex phenomena like blood coagulation, an event that in mammals involves the interplay of more than two dozen genetically encoded factors. Gene inventories for different organisms are revealing when during vertebrate evolution certain factors first made their appearance or, on occasion, disappeared from some lineages. The whole genome sequence databases of two protochordates and seven non-mammalian vertebrates were examined in search of some 20 genes known to be associated with blood clotting in mammals. No genuine orthologs were found in the protochordate genomes (sea squirt and amphioxus). As for vertebrates, although the jawless fish have genes for generating the thrombin-catalyzed conversion of fibrinogen to fibrin, they lack several clotting factors, including two thought to be essential for the activation of thrombin in mammals. Fish in general lack genes for the “contact factor” proteases, the predecessor forms of which make their first appearance in tetrapods. The full complement of factors known to be operating in humans doesn’t occur until pouched marsupials (opossum), at least one key factor still being absent in egg-laying mammals like platypus.
On: Friday, January 29, 2010
At: 3:00‐‐‐4:00 PM
In: Science II, Room 109
Residential irrigation as a driver of urban biodiversityMadhusudan Katti
Society for Integrative and Comparative Biology, 2010 Annual Meeting.
Meeting Abstract
67.11 Wednesday, Jan. 6 Resilience in urban socioecological systems: residential water management as a driver of biodiversity KATTI, M*; SCHLEDER, B; California State Univ, Fresno; California State Univ, Fresno mkatti@csufresno.edu
Cities are unique ecosystems where human social-economic-cultural activities prominently shape the landscape, influencing the distribution and abundance of other species, and consequent patterns of biodiversity. The long-term sustainability of cities is of increasing concern as they continue to grow, straining infrastructure and pushing against natural resources constraints. A key resource is water, esp. in the more rapidly urbanizing arid regions. Understanding water management is thus critical for a deeper theoretical understanding of urban ecosystems and for effective urban policy. Landscaping and irrigation at any urban residence is a product of local geophysical/ecological conditions, homeowners’ cultural preferences, socioeconomic status, neighborhood dynamics, zoning laws, and city/state/federal regulations. Since landscape structure and water availability are key determinants of habitat for other species, urban biodiversity is strongly driven by the outcome of interactions between these variables. Yet the relative importance of ecological variables vs human socioeconomic variables in driving urban biodiversity remains poorly understood. Here we analyze data from the Fresno Bird Count, a citizen science project in California’s Central Valley, to show that spatial variation in bird diversity is best explained by a multivariate model including significant negative correlations with % building and grass cover, and positive correlations with interactions between irrigation intensity, median family income, and grass height. We discuss implications of our findings for urban water management policies in general, and for Fresno’s planned switch to metering water use in 2013. Ecological theory, conservation, and urban policy all benefit if we recognize cities as coupled socioecological systems.
Step‐by‐Step Evolution of Vertebrate Blood Coagulation Madhusudan Katti
Department of Biology, Consortium for Evolutionary Studies & Tri Beta Biological Honor Society, California State University, Fresno present:
Step‐by‐Step Evolution of Vertebrate Blood Coagulation
by
Dr. Russell F. Doolittle
Dept. Chemistry & Biochemistry and Molecular Biology , University of California, San Diego
Abstract
The availability of whole genome sequences for a variety of vertebrates is making it possible to reconstruct the step-by-step evolution of complex phenomena like blood coagulation, an event that in mammals involves the interplay of more than two dozen genetically encoded factors. Gene inventories for different organisms are revealing when during vertebrate evolution certain factors first made their appearance or, on occasion, disappeared from some lineages. The whole genome sequence databases of two protochordates and seven non-mammalian vertebrates were examined in search of some 20 genes known to be associated with blood clotting in mammals. No genuine orthologs were found in the protochordate genomes (sea squirt and amphioxus). As for vertebrates, although the jawless fish have genes for generating the thrombin-catalyzed conversion of fibrinogen to fibrin, they lack several clotting factors, including two thought to be essential for the activation of thrombin in mammals. Fish in general lack genes for the “contact factor” proteases, the predecessor forms of which make their first appearance in tetrapods. The full complement of factors known to be operating in humans doesn’t occur until pouched marsupials (opossum), at least one key factor still being absent in egg-laying mammals like platypus.
On: Friday, January 29, 2010
At: 3:00‐‐‐4:00 PM
In: Science II, Room 109
1. Iarna Este iarnasi e noapte Pecersteleleclipesc In adancintunecat Ca sicomorileceresti Noricernusor in zapada Fulgi cad parcaplutesc Iarcopaci in zapada Se aude cum soptesc