Colin A Chapman
The George Washington University, Biological Anthropology, Faculty Member
- McGill University, Anthropology, Faculty Memberadd
- Dr. Colin Chapman received his joint Ph.D. in the Departments of Anthropology and Zoology at the University of Alber... moreDr. Colin Chapman received his joint Ph.D. in the Departments of Anthropology and Zoology at the University of Alberta. He spent 2 years at McGill and 3 years at Harvard University doing post-doctoral research. Since 1990 he has served as an Honourary lecturer in the Department of Zoology at Makerere University Uganda; and, since 1995, he has been an associate scientist with the Wildlife Conservation Society. Colin also served as a faculty member in Zoology at the University of Florida for 11 years, and returned to McGill in 2004 to take up a professorship in the Department of Anthropology and McGill School of Environment, where he holds a Canada Research Chair Tier 1 position in Primate Ecology and Conservation, is a Killam Research Fellow, and is a fellow of the Royal Society of Canada. He has conducted research in Kibale National Park in Uganda for 26+ years and is interested in the roles of disease, nutrition, and stress in determining primate abundance and how to best to forge a harmony between the needs of local people and conservation.edit
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Research Interests: Coevolution, Biology, Natural History, Medicine, Biological Sciences, and 15 moreColobus, Mitochondrial DNA, Humans, Female, Animals, Blood sampling, Male, Biological evolution, Pan troglodytes, Human immunodeficiency virus, Phylogenetic Tree, Host Pathogen Interactions, Nucleic Acid, Kibale National Park, and Medical and Health Sciences
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The degree to which variation in adult food availability affects the population dynamics of a species depends on its position on the capital‐income breeding continuum. The long‐lived butterflies that feed on fruits as adults constitute an... more
The degree to which variation in adult food availability affects the population dynamics of a species depends on its position on the capital‐income breeding continuum. The long‐lived butterflies that feed on fruits as adults constitute an example of Lepidoptera with a high degree of income breeding. For three species of fruit‐feeding butterflies in Uganda, we assessed the contribution of income to breeding in the wild, and the consequences of variation in fruit availability for body mass and population dynamics. We interpreted body‐mass loss within individuals as well as younger individuals having higher body mass than older ones as evidence for the depletion of capital reserves. Despite large sample sizes, we were able to show only modest body‐mass loss in one species, indicating that large‐bodied fruit‐feeding butterflies are functionally income breeders in the wild. Butterfly body mass was sensitive to environmental factors, although the responses to fruit availability and weather parameters were dominated by interactive effects. In all three species, periods of higher availability of fruit were followed by periods of higher adult abundance three to five months later, fitting the egg‐to‐adult time. Our results suggest that adult food is rapidly used for reproduction so that body mass remains stable and population size responds to adult food availability. For these income breeding species, the frequent periods of low adult food availability may select for extended adult longevity for the purpose of postponing reproduction to the onset of more favourable conditions. Read the free Plain Language Summary for this article on the Journal blog.
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Research Interests: Evolutionary Biology, Archaeology, Anthropology, Human Evolution, Cognition, and 15 moreFamily, Biology, Medicine, Cooperation, Social Complexity, Social behavior, Sociality, Population, Humans, Hominin evolution, Kin Selection, Disease, Biological evolution, Social Behavior, and Delivery of Health Care
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International audienc
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tag=1 data=Conserving tropical wetlands through sustainable use. by Thomas L. Crisman, Lauren J. Chapman and Colin A. Chapman tag=2 data=Crisman, Thomas L%Chapman, Lauren J.%Chapman, Colin A. tag=3 data=Geotimes, tag=4 data=41 tag=5... more
tag=1 data=Conserving tropical wetlands through sustainable use. by Thomas L. Crisman, Lauren J. Chapman and Colin A. Chapman tag=2 data=Crisman, Thomas L%Chapman, Lauren J.%Chapman, Colin A. tag=3 data=Geotimes, tag=4 data=41 tag=5 data=7 tag=6 data=July 1996 tag=7 data=23-25. tag=8 data=ENVIRONMENT tag=9 data=SALT-WATER INTRUSION tag=10 data=Conservation for a specific management purpose rather than strict preservation is the only means by which the world's wetlands can be protected for future generations. tag=11 data=1996/2/6 tag=12 data=96/0243 tag=13 data=CAB
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... It has also infested River Pangani in Tanzania, the Kafue River in Zambia, the Upper Nile, and is found in Lake Mariut in Egypt (Njuguna 1992). Water hyacinth appeared in Lake Naivasha in Kenya in 1982 and in Lake Kyoga in Uganda in... more
... It has also infested River Pangani in Tanzania, the Kafue River in Zambia, the Upper Nile, and is found in Lake Mariut in Egypt (Njuguna 1992). Water hyacinth appeared in Lake Naivasha in Kenya in 1982 and in Lake Kyoga in Uganda in 1988. ...
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... Biological Conservation Ш41-1Ю. JANSON, С and, J. TERBORGH. In press Censusing primates in rainforest, with reference to the primate community of Cocha Cáshu Biological Station, Manu National Park, Peru. С CHAPMAN/LM.fEDK3AN/LFEOSAN... more
... Biological Conservation Ш41-1Ю. JANSON, С and, J. TERBORGH. In press Censusing primates in rainforest, with reference to the primate community of Cocha Cáshu Biological Station, Manu National Park, Peru. С CHAPMAN/LM.fEDK3AN/LFEOSAN 75 Page 10. ...
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With the continual refinement and development of new molecular approaches, the last few years have witnessed a dramatic increase in the number of parasitological studies using genetics to answer ecological questions. Particularly, the... more
With the continual refinement and development of new molecular approaches, the last few years have witnessed a dramatic increase in the number of parasitological studies using genetics to answer ecological questions. Particularly, the advent of full genome sequencing holds promise to "decode all life", offering new potential to not only understand, but cure diseases. With the over-abundance of information and the comparable rapidity that these approaches can provide data, ecologists must be more careful than ever to select tools that suit their objectives and provide the resolution to their data that best fits their question, not simply the most attractive option. In this vein, Weinberg (2010) acknowledges that the molecular revolution has allowed a new mentality of “discover now and explain later” to invade research, and this has placed hypothesis-driven research under threat. However, regardless of potential setbacks that molecular approaches have introduced into basic r...
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The white-tailed deer is the most widely hunted species in the tropical areas of Mexico. However, the information about how the environmental conditions and the physiological status of individuals influenced the movement of this species... more
The white-tailed deer is the most widely hunted species in the tropical areas of Mexico. However, the information about how the environmental conditions and the physiological status of individuals influenced the movement of this species is practically unknown, even this will help to understand how this species could be affected by the changes that are already occurring in these areas. This study describes the daily movements of five female white-tailed deer, marked with radio satellite collars, and followed for 1 year in a tropical lowland area of Mexico. We compared the daily traveled distances per deer during the year and according to the environmental temperature and reproductive phenology of the individuals. We found that the average daily distance traveled during the year was 1044.06 m (SD ± 501.00 m), with the longest daily movements occurring during the dry season and shorter movements during the wet season. Temperature showed no influence on daily movements, but it is likely that the fawning season and food shortages would during the dry season influence the longest daily movements of the deer. On the other side, the reduced daily traveled distances during the wet season indicate that the flooding season affected the movement of the deer. The continuation of studies on the movement ecology of the species would help us to clarify how this species will adapt to the climate change scenarios in the tropical lowlands of Mexico, where longer flooding seasons with contrasting extreme drought are expected.
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World‐wide declines in arthropod abundance and diversity are a major concern, particularly given their importance in ecosystem functioning. Yet, data documenting long‐term trends are rare from the tropics, particularly the Afrotropics.... more
World‐wide declines in arthropod abundance and diversity are a major concern, particularly given their importance in ecosystem functioning. Yet, data documenting long‐term trends are rare from the tropics, particularly the Afrotropics. Here we evaluate changes in the arthropod communities in Kibale National Park, Uganda across almost four decades. Systematic sweep‐net sampling was conducted in two forested sections of the park that had been logged and in one old‐growth forest area over 12 consecutive months in 1983/1984 and 2020/2021. This data was augmented with intermittent samples taken in 1986 and 1995. Arthropod abundance declined in all areas, but only significantly so in the moderately logged forestry compartment (41%). Permutational multivariate analysis of variance indicated that community compositions of arthropods differed between the censuses. Understanding the drivers of changes in the arthropod communities is difficult as the system is complex and dynamic. We document ...
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The scientific discipline of “Movement Ecology” (Nathan et al. 2008) has played an important role in advancing our understanding of almost every ecological and evolutionary process, from nutrient cycling, to habitat selection, to... more
The scientific discipline of “Movement Ecology” (Nathan et al. 2008) has played an important role in advancing our understanding of almost every ecological and evolutionary process, from nutrient cycling, to habitat selection, to population dynamics and community ecology. Interestingly, it has been almost a quarter of a century ago since Rodgers and Anson (1994) stated that GPS-based animal-location systems would become the standard for habitat selection studies. They were right! The data made available from GPS telemetry (i.e., sequence of GPS locations) quickly boosted the field of “Movement Ecology” (Nathan et al. 2008), and this field was also greatly advanced when the Max Planck Institute of Ornithology developed a free online database, Movebank (movebank.org), that allowed movement data from many, many species to be freely accessed and analysed (millions and millions of travel routes). Further advancements became possible with the development and use of new analytical tools to understand the rules used by the study animals to move (Ropert-Coudert and Wilson 2005; Sengupta et al. 2018).
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Significant gaps remain in understanding the response of plant reproduction to environmental change. This is partly because measuring reproduction in long‐lived plants requires direct observation over many years and such datasets have... more
Significant gaps remain in understanding the response of plant reproduction to environmental change. This is partly because measuring reproduction in long‐lived plants requires direct observation over many years and such datasets have rarely been made publicly available. Here we introduce MASTREE+, a data set that collates reproductive time‐series data from across the globe and makes these data freely available to the community. MASTREE+ includes 73,828 georeferenced observations of annual reproduction (e.g. seed and fruit counts) in perennial plant populations worldwide. These observations consist of 5971 population‐level time‐series from 974 species in 66 countries. The mean and median time‐series length is 12.4 and 10 years respectively, and the data set includes 1122 series that extend over at least two decades (≥20 years of observations). For a subset of well‐studied species, MASTREE+ includes extensive replication of time‐series across geographical and climatic gradients. Here...
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Volcanic crater lakes are widely disrributed throughout the tropics. Although early limnological expeditions to East Africa focused on large spectacular lakes, the SUNDA expedition of 1928-29 paid particular attention to crater lakes... more
Volcanic crater lakes are widely disrributed throughout the tropics. Although early limnological expeditions to East Africa focused on large spectacular lakes, the SUNDA expedition of 1928-29 paid particular attention to crater lakes throughout Indonesia (RUTINER 1931, CRISMAN & STREEVER 1996). A modest resurvey of the Indonesian crater lakes has been conducted (GREEN et al. 1996). In spite of early surveys (JuDAY 1915, DEEVEY 1957), interest in Central American crater lakes has lagged umil recently (BARLOW et al. 1976, }IMENEZ & SPRINGER 1994, UMANA &J!MENEZ 1995). Our understanding of crater lakes in Ghana (WHYTE 1975) and Cameroon (.Kl.ING 1988) in West Africa and Ethiopia (Wooo er al. 1984, GREEN 1986, ZrNABU 1994) and Kenya (MELACK 1996) in East Africa is slowly developing. The earliest investigations on crater lakes in Uganda were by BEADLE (1932, 1963, 1966). La t er, MELACK (1978) surveyed the fo ur geographic dusters of crater lakes in western Uganda and divided rhe 89 lake...
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ABSTRACT Research is an interconnected global endeavor. Networks of research collaborations are often using Social Networks Analysis. Its variant Spatial Social Networks allowing explicit embedding of spatial information in the network.... more
ABSTRACT Research is an interconnected global endeavor. Networks of research collaborations are often using Social Networks Analysis. Its variant Spatial Social Networks allowing explicit embedding of spatial information in the network. Variations in incorporating spatial information results in multiple conceptualizations of networks, enabling exploration of a variety of questions regarding collaborations. To elucidate this approach the National Geographic Society grants database (1890–2016) is utilized to create three different networks that embed spatial information in distinct ways. Each network highlights a different aspect of connectivity latent in the dataset and along with the spatial information, emphasizes international and regional trends of collaborations. The networks explicate the international nature of collaborative research by virtue of people collaborating explicitly, or by working in the same places. It also highlights the multidisciplinary nature of research in various countries, and how it can be useful to ideate about new projects. Additionally, the network approach highlights the dominance of global north in conducting fieldwork-based research across the world, mostly through collaborations. The abstraction afforded by social network models requires further deliberation on the way spatial relationships can be captured differently using the node-edge structure and how these alternate networks compare to traditional networks in GIScience.
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Research is a highly competitive profession where evaluation plays a central role; journals are ranked and individuals are evaluated based on their publication number, the number of times they are cited and theirh-index. Yet such... more
Research is a highly competitive profession where evaluation plays a central role; journals are ranked and individuals are evaluated based on their publication number, the number of times they are cited and theirh-index. Yet such evaluations are often done in inappropriate ways that are damaging to individual careers, particularly for young scholars, and to the profession. Furthermore, as with all indices, people can play games to better their scores. This has resulted in the incentive structure of science increasingly mimicking economic principles, but rather than a monetary gain, the incentive is a higher score. To ensure a diversity of cultural perspectives and individual experiences, we gathered a team of academics in the fields of ecology and evolution from around the world and at different career stages. We first examine how authorship,h-index of individuals and journal impact factors are being used and abused. Second, we speculate on the consequences of the continued use of t...