Academic literature on the topic 'Megaherbivores'

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Journal articles on the topic "Megaherbivores"

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Faith, J. Tyler, John Rowan, Andrew Du, and Paul L. Koch. "Plio-Pleistocene decline of African megaherbivores: No evidence for ancient hominin impacts." Science 362, no. 6417 (2018): 938–41. http://dx.doi.org/10.1126/science.aau2728.

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It has long been proposed that pre-modern hominin impacts drove extinctions and shaped the evolutionary history of Africa’s exceptionally diverse large mammal communities, but this hypothesis has yet to be rigorously tested. We analyzed eastern African herbivore communities spanning the past 7 million years—encompassing the entirety of hominin evolutionary history—to test the hypothesis that top-down impacts of tool-bearing, meat-eating hominins contributed to the demise of megaherbivores prior to the emergence ofHomo sapiens. We document a steady, long-term decline of megaherbivores beginning
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Laverty, Theresa M., and Joel Berger. "Indirect effects of African megaherbivore conservation on bat diversity in the world's oldest desert." Conservation Biology 36, no. 2 (2022): e13780. https://doi.org/10.5281/zenodo.13452258.

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(Uploaded by Plazi for the Bat Literature Project) In extreme environments, temperature and precipitation are often the main forces responsible for structuring ecological communities and species distributions. The role of biotic interactions is typically thought to be minimal. By clustering around rare and isolated features, like surface water, however, effects of herbivory by desert-dwelling wildlife can be amplified. Understanding how species interact in these environments is critical to safeguarding vulnerable or data-deficient species. We examined whether African elephants (Loxodonta afric
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Laverty, Theresa M., and Joel Berger. "Indirect effects of African megaherbivore conservation on bat diversity in the world's oldest desert." Conservation Biology 36, no. 2 (2022): e13780. https://doi.org/10.5281/zenodo.13452258.

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Abstract:
(Uploaded by Plazi for the Bat Literature Project) In extreme environments, temperature and precipitation are often the main forces responsible for structuring ecological communities and species distributions. The role of biotic interactions is typically thought to be minimal. By clustering around rare and isolated features, like surface water, however, effects of herbivory by desert-dwelling wildlife can be amplified. Understanding how species interact in these environments is critical to safeguarding vulnerable or data-deficient species. We examined whether African elephants (Loxodonta afric
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Laverty, Theresa M., and Joel Berger. "Indirect effects of African megaherbivore conservation on bat diversity in the world's oldest desert." Conservation Biology 36, no. 2 (2022): e13780. https://doi.org/10.5281/zenodo.13452258.

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Abstract:
(Uploaded by Plazi for the Bat Literature Project) In extreme environments, temperature and precipitation are often the main forces responsible for structuring ecological communities and species distributions. The role of biotic interactions is typically thought to be minimal. By clustering around rare and isolated features, like surface water, however, effects of herbivory by desert-dwelling wildlife can be amplified. Understanding how species interact in these environments is critical to safeguarding vulnerable or data-deficient species. We examined whether African elephants (Loxodonta afric
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Laverty, Theresa M., and Joel Berger. "Indirect effects of African megaherbivore conservation on bat diversity in the world's oldest desert." Conservation Biology 36, no. 2 (2022): e13780. https://doi.org/10.5281/zenodo.13452258.

Full text
Abstract:
(Uploaded by Plazi for the Bat Literature Project) In extreme environments, temperature and precipitation are often the main forces responsible for structuring ecological communities and species distributions. The role of biotic interactions is typically thought to be minimal. By clustering around rare and isolated features, like surface water, however, effects of herbivory by desert-dwelling wildlife can be amplified. Understanding how species interact in these environments is critical to safeguarding vulnerable or data-deficient species. We examined whether African elephants (Loxodonta afric
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Laverty, Theresa M., and Joel Berger. "Indirect effects of African megaherbivore conservation on bat diversity in the world's oldest desert." Conservation Biology 36, no. 2 (2022): e13780. https://doi.org/10.5281/zenodo.13452258.

Full text
Abstract:
(Uploaded by Plazi for the Bat Literature Project) In extreme environments, temperature and precipitation are often the main forces responsible for structuring ecological communities and species distributions. The role of biotic interactions is typically thought to be minimal. By clustering around rare and isolated features, like surface water, however, effects of herbivory by desert-dwelling wildlife can be amplified. Understanding how species interact in these environments is critical to safeguarding vulnerable or data-deficient species. We examined whether African elephants (Loxodonta afric
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Van Valkenburgh, Blaire, Matthew W. Hayward, William J. Ripple, Carlo Meloro, and V. Louise Roth. "The impact of large terrestrial carnivores on Pleistocene ecosystems." Proceedings of the National Academy of Sciences 113, no. 4 (2015): 862–67. http://dx.doi.org/10.1073/pnas.1502554112.

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Large mammalian terrestrial herbivores, such as elephants, have dramatic effects on the ecosystems they inhabit and at high population densities their environmental impacts can be devastating. Pleistocene terrestrial ecosystems included a much greater diversity of megaherbivores (e.g., mammoths, mastodons, giant ground sloths) and thus a greater potential for widespread habitat degradation if population sizes were not limited. Nevertheless, based on modern observations, it is generally believed that populations of megaherbivores (>800 kg) are largely immune to the effects of predation and t
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Owen-Smith, Norman. "Pleistocene extinctions: the pivotal role of megaherbivores." Paleobiology 13, no. 3 (1987): 351–62. http://dx.doi.org/10.1017/s0094837300008927.

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Two alternative hypotheses have been advanced to explain the demise of about half of the mammalian genera exceeding 5 kg in body mass in the later Pleistocene. One hypothesis invokes climatic change and resulting habitat transformations. This fails to predict the increased likelihood of extinctions with increasing body size, greater severity in both North and South America than in Eurasia or Australia, lack of simultaneous extinctions in Africa and tropical Asia, and the absence of extinctions at the end of previous glacial periods. The other hypothesis invokes human predation as the primary c
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Davis, Owen K. "Spores of the Dung Fungus Sporormiella: Increased Abundance in Historic Sediments and Before Pleistocene Megafaunal Extinction." Quaternary Research 28, no. 2 (1987): 290–94. http://dx.doi.org/10.1016/0033-5894(87)90067-6.

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AbstractSpores of the dung fungus Sporormiella become abundant following the historic introduction of grazing herbivores at seven sites in the western United States. During the Holocene they are generally rare, but at six sites Sporormiella spores are abundant before the extinction of Pleistocene megaherbivores ca. 11,000 yr B.P. Sporormiella spores are directly linked to extinct megaherbivores by their presence in mammoth dung preserved in Bechan Cave, Southern Utah. Their abundance in late-glacial sediments may reflect the abundance of megaherbivores during Quaternary, thereby indicating the
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Sekar, Nitin, and Raman Sukumar. "The Asian elephant is amongst the top three frugivores of two tree species with easily edible fruit." Journal of Tropical Ecology 31, no. 5 (2015): 385–94. http://dx.doi.org/10.1017/s0266467415000346.

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Abstract:Large animal species are prone to local extirpation, but ecologists cannot yet predict how the loss of megaherbivores affects ecosystem processes such as seed dispersal. Few studies have compared the quantity and quality of seed dispersal by megaherbivores versus alternative frugivores in the wild, particularly for plant species with fruit easily consumed by many frugivorous species. In a disturbed tropical moist forest in India, we examine whether megaherbivores are a major frugivore of two tree species with easily edible, mammal-dispersed fruit. We quantify the relative fruit remova
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Dissertations / Theses on the topic "Megaherbivores"

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Landman, Marietjie. "Megaherbivores in succulent thicket: resource use and implications." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1007956.

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This study aims to develop a predictive understanding of the resource use, impacts and interactions of elephant Loxodonta africana and black rhinoceros Diceros bicornis in the succulent thickets of the Eastern Cape, South Africa. While these megaherbivores typically dominate the biomass, elephant are more abundant, such that their impacts off-set that of all other herbivores. Consequently, this thesis has three main foci: first, developing a mechanistic understanding of the influences of elephant; second, developing predictive insights into elephant impacts on plant communities; finally, an un
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Scholtz, Rheinhardt. "Small mammal community structure (Rodentia: Muridae) in Punda Maria, Kruger National Park, South Africa : Causes and consequences." Bachelor's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/25596.

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The population dynamics of small mammal populations in Punda Maria, Kruger National Park, South Africa was investigated with respect to community size and structure, seed predation and dispersal of several trees. Species populations, community structure and habitat attributes were measured at six sites comprising of 3 habitat types (2 sites per habitat); namely Acaciagrassland, North-facing and South-facing sloped sites. Seasonal variation was investigated at the Acacia sites during late summer (April) and winter months (July). Five habitat attributes were measured; percentages of total cover
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Visser, Vernon. "Keystone megaherbivore hypothesis - white elephants?" Bachelor's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/26690.

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Currie, Gwen. "The impact of megaherbivore grazers on grasshopper communities via grassland conversion in a savannah ecosystem." Bachelor's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/24945.

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Grasshoppers are sensitive indicators of the state of disturbance of grassland ecosystems. This study examined the grasshopper communities inside a game reserve, comparing those found on frequently grazed areas with communities inside plots that exclude megaherbivores. The vegetation inside the protected plots was found to differ from the openly grazed areas in terms of grass height and aerial cover, but not in % greenness or richness of forb species. Grass species varied with locality rather than grazing impact. Total numbers of grasshoppers did not differ significantly between the two contra
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Senko, Jesse. "Fine scale diel movements and short term activity ranges of a marine megaherbivore at a tidally driven lagoon." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041305.

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Schulze, Kiowa Alraune [Verfasser]. "Self-regulating ecosystem dynamics in future wilderness development driven by large herbivore-wildfire-vegetation interactions – and relations to the megaherbivore theory – / Kiowa Alraune Schulze." Kassel : Kassel University Press, 2019. http://d-nb.info/1188044974/34.

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Rödde, Sandy Marie-Christine. "Verhalten und Raumnutzung von Exmoorponys im Reiherbachtal (Solling)." Doctoral thesis, 2015. http://hdl.handle.net/11858/00-1735-0000-0022-6056-3.

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Vom Herbst 2011 bis zum Herbst 2013 wurde das Verhalten und die Standortwahl einer Herde Exmoorponys unter seminatürlichen Bedingungen im Naturpark Solling-Vogler untersucht. Die zehn Fokustiere lebten auf einer rund 140 ha großen Fläche. Die Verhaltensweisen wurden für jedes Individuum mittels focal-animal-sampling notiert. Im Durchschnitt verbrachten die Exmoorponys im Solling 72,4% des gezeigten Gesamtverhaltens mit der Nahrungsaufnahme, 15,5% mit dem Ruhen, 6,5% mit der Lokomotion, 2,1% mit dem Komfortverhalten, 1,4% mit dem Stehen, 1,3% mit dem Sozialverhalten, 0,7% mit dem Defäkationsve
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Reinecke, Jennifer. "The return of the mammoth steppe?: Rewilding in northeastern Yakutia and the actual impact of large herbivore grazing on vegetation." 2019. https://tud.qucosa.de/id/qucosa%3A38665.

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Rewilding aims at the restoration of lost ecosystems by re-introducing large herbivores. In northern Siberia, the demise of the mammoth steppe ecosystem at the end of the Pleistocene has been related to the loss of megafauna due to human overhunting. Others argue that climate change at the beginning of the Holocene has triggered the shift from dry, cold steppe vegetation to wet and low productive tundra and taiga vegetation. Despite many different opinions and ongoing discussions on the topic, few case studies are available to test the proposed hypotheses. In this thesis I try to bridge the th
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Books on the topic "Megaherbivores"

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Owen-Smith, R. Norman. Megaherbivores: The Influence of Very Large Body Size on Ecology. Cambridge University Press, 2012.

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Owen-Smith, R. Norman. Megaherbivores: The Influence of Very Large Body Size on Ecology. Cambridge University Press, 2011.

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Megaherbivores: The influence of very large body size on ecology. Cambridge University Press, 1988.

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Owen-Smith, R. Norman. Megaherbivores: The Influence of Very Large Body Size on Ecology (Cambridge Studies in Ecology). Cambridge University Press, 1989.

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Megaherbivores: The Influence of Very Large Body Size on Ecology (Cambridge Studies in Ecology). Cambridge University Press, 1992.

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Book chapters on the topic "Megaherbivores"

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Owen-Smith, Norman. "The Interaction of Humans, Megaherbivores, and Habitats in the Late Pleistocene Extinction Event." In Extinctions in Near Time. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4757-5202-1_3.

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Schüle, Wilhelm. "Vegetation, Megaherbivores, Man and Climate in the Quaternary and the Genesis of Closed Forests." In Tropical Forests in Transition. Birkhäuser Basel, 1992. http://dx.doi.org/10.1007/978-3-0348-7256-0_4.

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Dörfler, Walter. "Megaherbivoren-Theorie und halb offene Weidelandschaften." In Vegetationsgeschichte der Landschaften in Deutschland. Springer Berlin Heidelberg, 2024. https://doi.org/10.1007/978-3-662-68936-3_51.

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Owen-Smith, Norman. "The megaherbivore syndrome: alternative life style or different time frame?" In Alternative Life-History Styles of Animals. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2605-9_22.

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Pino, Mario, Nathalie Cossio-Montecinos, and Benazzir Pinto. "Sporormiella Fungal Spores as a Proxy for Megaherbivore Abundance and Decline at Pilauco." In Pilauco: A Late Pleistocene Archaeo-paleontological Site. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23918-3_6.

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Owen-Smith, Norman. "Megaherbivores." In Reference Module in Life Sciences. Elsevier, 2024. http://dx.doi.org/10.1016/b978-0-12-822562-2.00377-7.

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Owen-Smith, Norman. "Megaherbivores." In Encyclopedia of Biodiversity. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-12-384719-5.00358-0.

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"Preface." In Megaherbivores. Cambridge University Press, 1988. http://dx.doi.org/10.1017/cbo9780511565441.001.

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"Prologue." In Megaherbivores. Cambridge University Press, 1988. http://dx.doi.org/10.1017/cbo9780511565441.002.

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"Morphology, evolutionary history and recent distribution." In Megaherbivores. Cambridge University Press, 1988. http://dx.doi.org/10.1017/cbo9780511565441.003.

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Conference papers on the topic "Megaherbivores"

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D’emic, Michael, Simone Hoffmann, and Brady Foreman. "Body size evolution of the first mammalian megaherbivore during Paleogene hyperthermal events, Wyoming." In Proceedings of the Keck Geology Consortium. Keck Geology Consortium, 2020. http://dx.doi.org/10.18277/akrsg.2020.33.03.

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Cocker, Scott, Tyler J. Murchie, Tyler J. Murchie, et al. "MEGAHERBIVORE DYNAMICS AT THE PLEISTOCENE-HOLOCENE TRANSITION IN EASTERN BERINGIA USING MULTIPROXY PALAEOENVIRONMENTAL RECORDS." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-357517.

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Mallon, Jordan. "COMPETITION AND NICHE PARTITIONING IN THE STRUCTURING OF MEGAHERBIVOROUS DINOSAUR COMMUNITIES IN LARAMIDIA: EVIDENCE, CHALLENGES, AND OPPORTUNITIES." In 75th Annual Meeting of the GSA Rocky Mountain Section - 2025. Geological Society of America, 2025. https://doi.org/10.1130/abs/2025rm-410012.

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Sageman, Isaac, Michael D. D'Emic, Simone Hoffmann, Brady Z. Foreman, Emily Randall, and Matthew T. Hurtgen. "CLIMATIC AND PALEOENVIRONMENTAL CHANGES ASSOCIATED WITH THE EVOLUTION OF THE FIRST MAMMALIAN MEGAHERBIVORE CORYPHODON DURING PALEOGENE HYPERTHERMAL EVENTS, BIGHORN BASIN, WYOMING." In 72nd Annual GSA Rocky Mountain Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020rm-346573.

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