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  • 1
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2003-04-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altshuler, Douglas L -- Clark, Christopher James -- New York, N.Y. -- Science. 2003 Apr 25;300(5619):588-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioengineering, California Institute of Technology, Pasadena, CA 91104, USA. doug@caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12714728" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Beak/*anatomy & histology ; *Biological Evolution ; Birds/*anatomy & histology/physiology ; Body Constitution ; Dominica ; Ecosystem ; Feeding Behavior ; Female ; Flowers/*anatomy & histology ; Heliconiaceae/*anatomy & histology ; Male ; Pigmentation ; Saint Lucia ; *Sex Characteristics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2011-09-10
    Beschreibung: During courtship flights, males of some hummingbird species produce diverse sounds with tail feathers of varying shapes. We show that these sounds are produced by air flowing past a feather, causing it to aeroelastically flutter and generate flutter-induced sound. Scanning laser doppler vibrometery and high-speed video of individual feathers of different sizes and shapes in a wind tunnel revealed multiple vibratory modes that produce a range of acoustic frequencies and harmonic structures. Neighboring feathers can be aerodynamically coupled and flutter either at the same frequency, resulting in sympathetic vibrations that increase loudness, or at different frequencies, resulting in audible interaction frequencies. Aeroelastic flutter is intrinsic to stiff airfoils such as feathers and thus explains tonal sounds that are common in bird flight.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, Christopher J -- Elias, Damian O -- Prum, Richard O -- New York, N.Y. -- Science. 2011 Sep 9;333(6048):1430-3. doi: 10.1126/science.1205222.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, Post Office Box 208105, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21903810" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Animal Communication ; Animals ; Biological Evolution ; Birds/anatomy & histology/*physiology ; Feathers/anatomy & histology/*physiology ; Female ; Flight, Animal ; Male ; Mating Preference, Animal ; Movement ; *Sound ; Tail/physiology ; Vibration ; Wind
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2012-07-27
    Beschreibung: The rapid disruption of tropical forests probably imperils global biodiversity more than any other contemporary phenomenon. With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to human encroachment and other environmental stresses. As pressures mount, it is vital to know whether existing reserves can sustain their biodiversity. A critical constraint in addressing this question has been that data describing a broad array of biodiversity groups have been unavailable for a sufficiently large and representative sample of reserves. Here we present a uniquely comprehensive data set on changes over the past 20 to 30 years in 31 functional groups of species and 21 potential drivers of environmental change, for 60 protected areas stratified across the world's major tropical regions. Our analysis reveals great variation in reserve 'health': about half of all reserves have been effective or performed passably, but the rest are experiencing an erosion of biodiversity that is often alarmingly widespread taxonomically and functionally. Habitat disruption, hunting and forest-product exploitation were the strongest predictors of declining reserve health. Crucially, environmental changes immediately outside reserves seemed nearly as important as those inside in determining their ecological fate, with changes inside reserves strongly mirroring those occurring around them. These findings suggest that tropical protected areas are often intimately linked ecologically to their surrounding habitats, and that a failure to stem broad-scale loss and degradation of such habitats could sharply increase the likelihood of serious biodiversity declines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laurance, William F -- Useche, D Carolina -- Rendeiro, Julio -- Kalka, Margareta -- Bradshaw, Corey J A -- Sloan, Sean P -- Laurance, Susan G -- Campbell, Mason -- Abernethy, Kate -- Alvarez, Patricia -- Arroyo-Rodriguez, Victor -- Ashton, Peter -- Benitez-Malvido, Julieta -- Blom, Allard -- Bobo, Kadiri S -- Cannon, Charles H -- Cao, Min -- Carroll, Richard -- Chapman, Colin -- Coates, Rosamond -- Cords, Marina -- Danielsen, Finn -- De Dijn, Bart -- Dinerstein, Eric -- Donnelly, Maureen A -- Edwards, David -- Edwards, Felicity -- Farwig, Nina -- Fashing, Peter -- Forget, Pierre-Michel -- Foster, Mercedes -- Gale, George -- Harris, David -- Harrison, Rhett -- Hart, John -- Karpanty, Sarah -- Kress, W John -- Krishnaswamy, Jagdish -- Logsdon, Willis -- Lovett, Jon -- Magnusson, William -- Maisels, Fiona -- Marshall, Andrew R -- McClearn, Deedra -- Mudappa, Divya -- Nielsen, Martin R -- Pearson, Richard -- Pitman, Nigel -- van der Ploeg, Jan -- Plumptre, Andrew -- Poulsen, John -- Quesada, Mauricio -- Rainey, Hugo -- Robinson, Douglas -- Roetgers, Christiane -- Rovero, Francesco -- Scatena, Frederick -- Schulze, Christian -- Sheil, Douglas -- Struhsaker, Thomas -- Terborgh, John -- Thomas, Duncan -- Timm, Robert -- Urbina-Cardona, J Nicolas -- Vasudevan, Karthikeyan -- Wright, S Joseph -- Arias-G, Juan Carlos -- Arroyo, Luzmila -- Ashton, Mark -- Auzel, Philippe -- Babaasa, Dennis -- Babweteera, Fred -- Baker, Patrick -- Banki, Olaf -- Bass, Margot -- Bila-Isia, Inogwabini -- Blake, Stephen -- Brockelman, Warren -- Brokaw, Nicholas -- Bruhl, Carsten A -- Bunyavejchewin, Sarayudh -- Chao, Jung-Tai -- Chave, Jerome -- Chellam, Ravi -- Clark, Connie J -- Clavijo, Jose -- Congdon, Robert -- Corlett, Richard -- Dattaraja, H S -- Dave, Chittaranjan -- Davies, Glyn -- Beisiegel, Beatriz de Mello -- da Silva, Rosa de Nazare Paes -- Di Fiore, Anthony -- Diesmos, Arvin -- Dirzo, Rodolfo -- Doran-Sheehy, Diane -- Eaton, Mitchell -- Emmons, Louise -- Estrada, Alejandro -- Ewango, Corneille -- Fedigan, Linda -- Feer, Francois -- Fruth, Barbara -- Willis, Jacalyn Giacalone -- Goodale, Uromi -- Goodman, Steven -- Guix, Juan C -- Guthiga, Paul -- Haber, William -- Hamer, Keith -- Herbinger, Ilka -- Hill, Jane -- Huang, Zhongliang -- Sun, I Fang -- Ickes, Kalan -- Itoh, Akira -- Ivanauskas, Natalia -- Jackes, Betsy -- Janovec, John -- Janzen, Daniel -- Jiangming, Mo -- Jin, Chen -- Jones, Trevor -- Justiniano, Hermes -- Kalko, Elisabeth -- Kasangaki, Aventino -- Killeen, Timothy -- King, Hen-biau -- Klop, Erik -- Knott, Cheryl -- Kone, Inza -- Kudavidanage, Enoka -- Ribeiro, Jose Lahoz da Silva -- Lattke, John -- Laval, Richard -- Lawton, Robert -- Leal, Miguel -- Leighton, Mark -- Lentino, Miguel -- Leonel, Cristiane -- Lindsell, Jeremy -- Ling-Ling, Lee -- Linsenmair, K Eduard -- Losos, Elizabeth -- Lugo, Ariel -- Lwanga, Jeremiah -- Mack, Andrew L -- Martins, Marlucia -- McGraw, W Scott -- McNab, Roan -- Montag, Luciano -- Thompson, Jo Myers -- Nabe-Nielsen, Jacob -- Nakagawa, Michiko -- Nepal, Sanjay -- Norconk, Marilyn -- Novotny, Vojtech -- O'Donnell, Sean -- Opiang, Muse -- Ouboter, Paul -- Parker, Kenneth -- Parthasarathy, N -- Pisciotta, Katia -- Prawiradilaga, Dewi -- Pringle, Catherine -- Rajathurai, Subaraj -- Reichard, Ulrich -- Reinartz, Gay -- Renton, Katherine -- Reynolds, Glen -- Reynolds, Vernon -- Riley, Erin -- Rodel, Mark-Oliver -- Rothman, Jessica -- Round, Philip -- Sakai, Shoko -- Sanaiotti, Tania -- Savini, Tommaso -- Schaab, Gertrud -- Seidensticker, John -- Siaka, Alhaji -- Silman, Miles R -- Smith, Thomas B -- de Almeida, Samuel Soares -- Sodhi, Navjot -- Stanford, Craig -- Stewart, Kristine -- Stokes, Emma -- Stoner, Kathryn E -- Sukumar, Raman -- Surbeck, Martin -- Tobler, Mathias -- Tscharntke, Teja -- Turkalo, Andrea -- Umapathy, Govindaswamy -- van Weerd, Merlijn -- Rivera, Jorge Vega -- Venkataraman, Meena -- Venn, Linda -- Verea, Carlos -- de Castilho, Carolina Volkmer -- Waltert, Matthias -- Wang, Benjamin -- Watts, David -- Weber, William -- West, Paige -- Whitacre, David -- Whitney, Ken -- Wilkie, David -- Williams, Stephen -- Wright, Debra D -- Wright, Patricia -- Xiankai, Lu -- Yonzon, Pralad -- Zamzani, Franky -- England -- Nature. 2012 Sep 13;489(7415):290-4. doi: 10.1038/nature11318.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Tropical Environmental and Sustainability Science and School of Marine and Tropical Biology, James Cook University, Cairns, Queensland 4878, Australia. bill.laurance@jcu.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22832582" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Agriculture/statistics & numerical data ; Animals ; *Biodiversity ; Conservation of Natural Resources/*statistics & numerical data ; Data Collection ; Ecology/statistics & numerical data ; Endangered Species/*statistics & numerical data ; Environmental Pollution/adverse effects/statistics & numerical data ; Fires/statistics & numerical data ; Forestry/statistics & numerical data ; Interviews as Topic ; Mining/statistics & numerical data ; Population Growth ; Rain ; Reproducibility of Results ; Research Personnel ; Surveys and Questionnaires ; Temperature ; Trees/*physiology ; *Tropical Climate
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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