Percorrer por autor "Wittig, Roman M."
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- The archaeological visibility of chimpanzee (Pan troglodytes) nut-crackingPublication . Proffitt, Tomos; Pacome, Serge Soiret; Reeves, Jonathan S.; Wittig, Roman M.; Luncz, Lydia V.The earliest evidence for complex tool use in the archaeological record dates to 3.3 Ma. While wooden tools may have been used by our earliest ancestors, the evidence is absent due to poor preservation. However, insights into possible early hominin wooden tool use can be gained from observing the tool-use practices of our closest living relatives, chimpanzees (Pan troglodytes). By using stone hammers used to crack various nuts, chimpanzees leave a durable material signature comprised of formal tools and associated diagnostic fragments. While the archaeological evidence of chimpanzee wooden tool use is temporary, the combination of stone hammers and wooden anvils can create a more enduring lithic record. This study explores the lithic assemblages associated with wooden and stone anvil use at nut-cracking sites in Ta & iuml; National Park, C & ocirc;te d'Ivoire, using technological and use-wear analyses. Our results indicate clear differences in density, fracture patterns, and use-wear in the lithic records between wooden anvil and stone anvil sites. New archaeological excavations at six chimpanzee nut-cracking sites reveal that the anvils' material directly influences the visibility of nut-cracking evidence in the archaeological record. By examining the nature of the lithic signatures associated with wooden anvil and stone anvil use by chimpanzees, we can formulate hypotheses about the probability of such behaviors being preserved and identifiable in the Plio-Pleistocene hominin archaeological record. The variability in material signatures from nut-cracking on different anvils suggests that stone anvils leave a clear archaeological record. Evidence for wooden anvil use is likely underrepresented due to the more ephemeral nature of the associated percussive damage and material signature. It may, however, still be possible, albeit challenging, to identify wooden anvil use in the archaeological record.
- Tropical field stations yield high conservation return on investmentPublication . Eppley, Timothy M.; Reuter, Kim E.; Sefczek, Timothy M.; Tinsman, Jen; Santini, Luca; Hoeks, Selwyn; Andriantsaralaza, Seheno; Shanee, Sam; Fiore, Anthony Di; Setchell, Joanna M.; Strier, Karen B.; Abanyam, Peter A.; Mutalib, Aini Hasanah Abd; Abwe, Ekwoge; Ahmed, Tanvir; Ancrenaz, Marc; Andriantsimanarilafy, Raphali R.; Ang, Andie; Aureli, Filippo; Barrett, Louise; Beehner, Jacinta C.; Benítez, Marcela E.; Bezerra, Bruna M.; Bicca‐Marques, Júlio César; Bikaba, Dominique; Bitariho, Robert; Boesch, Christophe; Bolt, Laura M.; Boonratana, Ramesh; Butynski, Thomas M.; Canale, Gustavo R.; Chapman, Colin A.; Carvalho, Susana; Chetry, Dilip; Cheyne, Susan M.; Cords, Marina; Cornejo, Fanny M.; Cortés‐Ortiz, Liliana; Coudrat, Camille N. Z.; Crofoot, Margaret C.; Cronin, Drew T.; Dadjo, Alvine; Dakpogan, S. Chrystelle; Danquah, Emmanuel; Davenport, Tim R. B.; Jong, Yvonne A. de; Torre, Stella de la; Dempsey, Andrea; Dimalibot, Judeline C.; Dolch, Rainer; Donati, Giuseppe; Estrada, Alejandro; Farassi, Rassina A.; Fashing, Peter J.; Fernandez‐Duque, Eduardo; Silva, Maria J. Ferreira da; Fischer, Julia; Flores‐Negrón, César F.; Fruth, Barbara; Neba, Terence Fuh; Gamalo, Lief Erikson; Ganzhorn, Jörg U.; Garber, Paul A.; Gnanaolivu, Smitha D.; Gonder, Mary Katherine; Bi, Sery Ernest Gonedelé; Goossens, Benoit; Gordo, Marcelo; Guayasamin, Juan M.; Guzmán‐Caro, Diana C.; Halloran, Andrew R.; Hartel, Jessica A.; Heymann, Eckhard W.; Hill, Russell A.; Hockings, Kimberley J.; Hohmann, Gottfried; Hon, Naven; Houngbédji, Mariano G.; Huffman, Michael A.; Ikemeh, Rachel A.; Imong, Inaoyom; Irwin, Mitchell T.; Izar, Patrícia; Jerusalinsky, Leandro; Kalema‐Zikusoka, Gladys; Kaplin, Beth A.; Kappeler, Peter M.; Kivai, Stanislaus M.; Knott, Cheryl D.; Kolasartsanee, Intanon; Koops, Kathelijne; Kowalewski, Martin M.; Kujirakwinja, Deo; Kumar, Ajith; Le, Quyet K.; Lewis, Rebecca J.; Lin, Aung Ko; Link, Andrés; Loría, Luz I.; Lormie, Menladi M.; Louis, Edward E.; Lwin, Ngwe; Maisels, Fiona; Malaivijitnond, Suchinda; Marisa, Lesley; McCabe, Gráinne M.; McGraw, W. Scott; Mekonnen, Addisu; Méndez‐Carvajal, Pedro G.; Minhós, Tânia; Montgomery, David M.; Morelos‐Juárez, Citlalli; Morgan, Bethan J.; Morgan, David; Etingüe, Amancio Motove; Ndiaye, Papa Ibnou; Nekaris, K. Anne‐Isola; Nguyen, Nga; Nijman, Vincent; Nishuli, Radar; Norconk, Marilyn A.; Oklander, Luciana I.; Oktaviani, Rahayu; Ostner, Julia; Otali, Emily; Perry, Susan E.; Ramos, Eduardo J. Pinel; Porter, Leila M.; Pruetz, Jill D.; Pusey, Anne E.; Queiroz, Helder L.; Ramírez, Mónica A.; Randriatahina, Guy Hermas; Rasoanaivo, Hoby; Ratsimbazafy, Jonah; Ratsirarson, Joelisoa; Razafindramanana, Josia; Razafindratsima, Onja H.; Reynolds, Vernon; Rizaldi, Rizaldi; Robbins, Martha M.; Rodríguez, Melissa E.; Rosales‐Meda, Marleny; Sanz, Crickette M.; Sarkar, Dipto; Savage, Anne; Schreier, Amy L.; Schülke, Oliver; Segniagbeto, Gabriel H.; Serio‐Silva, Juan Carlos; Setiawan, Arif; Seyjagat, John; Silva, Felipe E.; Sinclair, Elizabeth M.; Smith, Rebecca L.; Spaan, Denise; Stewart, Fiona A.; Strum, Shirley C.; Surbeck, Martin; Svensson, Magdalena S.; Talebi, Mauricio; Tédonzong, Luc Roscelin; Urbani, Bernardo; Valsecchi, João; Vasey, Natalie; Vogel, Erin R.; Wallace, Robert B.; Wallis, Janette; Waters, Siân; Wittig, Roman M.; Wrangham, Richard W.; Wright, Patricia C.; Mittermeier, Russell A.Conservation funding is currently limited; cost-effective conservation solutions are essential. We suggest that the thousands of field stations worldwide can play key roles at the frontline of biodiversity conservation and have high intrinsic value. We assessed field stations’ conservation return on investment and explored the impact of COVID-19. We surveyed leaders of field stations across tropical regions that host primate research; 157 field stations in 56 countries responded. Respondents reported improved habitat quality and reduced hunting rates at over 80% of field stations and lower operational costs per km2 than protected areas, yet half of those surveyed have less funding now than in 2019. Spatial analyses support field station presence as reducing deforestation. These “earth observatories” provide a high return on investment; we advocate for increased support of field station programs and for governments to support their vital conservation efforts by investing accordingly.