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Human Ecology

, Volume 47, Issue 5, pp 669–679 | Cite as

Where the Wild Things were is Where Humans are Now: an Overview

  • J. L. R. AbegãoEmail author
Article

Abstract

Humanity is undergoing an unprecedented demographic transformation in that global population is rising from 2 billion in the 1920s to an expected 8 billion in the 2020s, an annual increase of roughly 80 million. The requirements of this expanding human population are strongly linked to depletion of wildlife and increasing difficulties facing both wildlife and environmental conservation efforts. I assess current and potential risks stemming from the environmental changes due to unchecked human population growth.

Keywords

Overpopulation Population growth Habitat and wildlife conservation Biodiversity Environmental degradation 

Notes

Compliance with Ethical Standards

Conflict of Interest

The author declares he has no conflict of interest.

References

  1. Allan, J. R., Watson, J. E. M., Di Marco, M., O’Bryan, C. J., Possingham, H. P., Atkinson, S. C., and Venter, O. (2019). Hotspots of Human Impact on Threatened Terrestrial Vertebrates. PLOS Biology 17(3): e3000158.  https://doi.org/10.1371/journal.pbio.3000158.CrossRefGoogle Scholar
  2. Ascensão, F., Fahrig, L., Clevenger, A. P., Corlett, R. T., Jaeger, J. A. G., Laurance, W. F., and Pereira, H. M. (2018). Environmental Challenges for the Belt and Road Initiative. Nature Sustainability 1(5): 206–209.  https://doi.org/10.1038/s41893-018-0059-3.CrossRefGoogle Scholar
  3. Baillie, J., and Zhang, Y.-P. (2018). Space for nature. Science (New York, N.Y.) 361(6407): 1051.  https://doi.org/10.1126/science.aau1397.CrossRefGoogle Scholar
  4. Bar-On, Y. M., Phillips, R., and Milo, R. (2018). The Biomass Distribution on Earth. Proceedings of the National Academy of Sciences of the United States of America 115(25): 6506–6511.  https://doi.org/10.1073/pnas.1711842115.CrossRefGoogle Scholar
  5. Bellard, C., Bertelsmeier, C., Leadley, P., Thuiller, W., and Courchamp, F. (2012). Impacts of Climate Change on the Future of Biodiversity. Ecology Letters 15(4): 365–377.  https://doi.org/10.1111/j.1461-0248.2011.01736.x.CrossRefGoogle Scholar
  6. BENNETT, E. L., BLENCOWE, E., BRANDON, K., BROWN, D., BURN, R. W., COWLISHAW, G., et al (2007). Hunting for Consensus: Reconciling Bushmeat Harvest, Conservation, and Development Policy in West and Central Africa. Conservation Biology 21(3): 884–887.  https://doi.org/10.1111/j.1523-1739.2006.00595.x.CrossRefGoogle Scholar
  7. Bongaarts, J., and O’Neill, B. C. (2018). Global Warming Policy: Is Population Left Out in the Cold? Science (New York, N.Y.) 361(6403): 650–652.  https://doi.org/10.1126/science.aat8680.CrossRefGoogle Scholar
  8. Bonhommeau, S., Dubroca, L., Le Pape, O., Barde, J., Kaplan, D. M., Chassot, E., and Nieblas, A.-E. (2013). Eating up the World’s Food Web and the Human Trophic Level. Proceedings of the National Academy of Sciences 110(51): 20617 LP-20620.  https://doi.org/10.1073/pnas.1305827110.CrossRefGoogle Scholar
  9. Brashares, J. S., Arcese, P., and Sam, M. K. (2001). Human Demography and Reserve Size Predict Wildlife Extinction in West Africa. Proceedings. Biological Sciences 268(1484): 2473–2478.  https://doi.org/10.1098/rspb.2001.1815.CrossRefGoogle Scholar
  10. Brashares, J. S., Arcese, P., Sam, M. K., Coppolillo, P. B., Sinclair, A. R. E., and Balmford, A. (2004). Bushmeat Hunting, Wildlife Declines, and Fish Supply in West Africa. Science 306(5699): 1180–1183.  https://doi.org/10.1126/science.1102425.CrossRefGoogle Scholar
  11. Burkle, L. A., Marlin, J. C., and Knight, T. M. (2013). Plant-Pollinator Interactions Over 120 Years: Loss of SSpecies, Co-OOccurrence, and Function. Science 339(6127): 1611–1615.  https://doi.org/10.1126/science.1232728.CrossRefGoogle Scholar
  12. Büscher, B., Fletcher, R., Brockington, D., Sandbrook, C., Adams, W. M., Campbell, L., et al (2017). Half-Earth or Whole Earth? Radical Ideas for Conservation, and their Implications. Oryx 51(03): 407–410.  https://doi.org/10.1017/S0030605316001228.CrossRefGoogle Scholar
  13. Butchart, S. H. M., Clarke, M., Smith, R. J., Sykes, R. E., Scharlemann, J. P. W., Harfoot, M., et al (2015). Shortfalls and Solutions for Meeting National and Global Conservation Area Targets. Conservation Letters 8(5): 329–337.  https://doi.org/10.1111/conl.12158.CrossRefGoogle Scholar
  14. Cafaro, P. (2012). Climate Ethics and Population Policy. Wiley Interdisciplinary Reviews: Climate Change 3(1): 45–61.  https://doi.org/10.1002/wcc.153.CrossRefGoogle Scholar
  15. Cafaro, P. (2018). Immigration ethics for a world of limits. The Overpopulation Project. Retrieved from https://overpopulation-project.com/2018/09/11/immigration-ethics-for-a-world-of-limits/. Accessed 11 Aug 2019
  16. Cafaro, P., & Staples, W. (2012). The Environmental Argument for Reducing Immigration into the United States. In Philip Cafaro & Eileen Crist (Eds.), Life on the Brink: Environmentalists Confront Overpopulation. University of Georgia Press. Retrieved from https://books.google.pt/books?id=6eOrAAAAQBAJ&printsec=frontcover&dq=life+on+the+brink&hl=pt-PT&sa=X&ved=0ahUKEwj0zNm77_rYAhXFvRQKHWxvCjEQ6AEIKDAA#v=onepage&q. Accessed 11 Aug 2019
  17. Cafaro, P., Butler, T., Crist, E., Cryer, P., Dinerstein, E., Kopnina, H., et al (2017). If we want a whole Earth, Nature Needs Half: A Response to Büscher et al. Oryx 51(03): 400.  https://doi.org/10.1017/S0030605317000072.CrossRefGoogle Scholar
  18. Cannon J. C. (2018). Humans are Leaving their Mark on the World’s Protected Areas, Study Finds. Mongabay. Retrieved from https://news.mongabay.com/2018/05/humans-are-leaving-their-mark-on-the-worlds-protected-areas-study-finds/?fbp. Accessed 11 Aug 2019
  19. Cardillo, M., Purvis, A., Sechrest, W., Gittleman, J. L., Bielby, J., and Mace, G. M. (2004). Human Population Density and Extinction Risk in the World’s Carnivores. PLoS Biology 2(7): e197.  https://doi.org/10.1371/journal.pbio.0020197.CrossRefGoogle Scholar
  20. Ceballos, G., Ehrlich, P. R., Barnosky, A. D., García, A., Pringle, R. M., and Palmer, T. M. (2015). Accelerated Modern Human–Induced Species Losses: Entering the Sixth Mass Extinction. Science Advances 1(5): e1400253.  https://doi.org/10.1126/sciadv.1400253.CrossRefGoogle Scholar
  21. Ceballos, G., Ehrlich, P. R., and Dirzo, R. (2017). Biological Annihilation via the Ongoing Sixth Mass Extinction Signaled by Vertebrate Population Losses and Declines. Proceedings of the National Academy of Sciences of the United States of America 114(30): E6089–E6096.  https://doi.org/10.1073/pnas.1704949114.CrossRefGoogle Scholar
  22. Chancel, L., Piketty, T., Milanovic, B., Lakner, C., Segal, P., Anand, S., … Andrews, R. (2015). Carbon and inequality: from Kyoto to Paris Trends in the Global Inequality of carbon emissions (1998–2013) & prospects for an equitable adaptation fund. Paris. Retrieved from http://piketty.pse.ens.fr/files/ChancelPiketty2015.pdf. Accessed 11 Aug 2019
  23. Cheng, X., Shuai, C., Liu, J., Wang, J., Liu, Y., Li, W., and Shuai, J. (2018). Topic Modelling of Ecology, Environment and Poverty Nexus: An Integrated Framework. Agriculture, Ecosystems & Environment 267: 1–14.  https://doi.org/10.1016/J.AGEE.2018.07.022.CrossRefGoogle Scholar
  24. Cincotta, R. P., Wisnewski, J., and Engelman, R. (2000). Human Population in the Biodiversity Hotspots. Nature 404(6781): 990–992.  https://doi.org/10.1038/35010105.CrossRefGoogle Scholar
  25. Clark, M. (2012). Deforestation in Madagascar: Consequences of Population Growth and Unsustainable Agricultural Processes. Global Majority E-Journal 3. Retrieved from http://www.bangladeshstudies.org/files/Global_Majority_e_Journal_3_1_Clark.pdf. Accessed 11 Aug 2019
  26. Clay, J. (2011). Freeze the Footprint of Food. Nature 475(7356): 287–289.  https://doi.org/10.1038/475287a.CrossRefGoogle Scholar
  27. Conly, S. (2016). One Child : Do we Have a Right to more? (1st ed.), Oxford University Press, Oxford.CrossRefGoogle Scholar
  28. Conservation International (2018). Hotspots – Targeted investment in nature’s most important places. Retrieved from https://www.conservation.org/How/Pages/Hotspots.aspx. Accessed 11 Aug 2019
  29. Convention on Biological Diversity. (2013) Quick Guide to the Aichi Biodiversity Targets: Protected Areas Increased and Improved (Target. 11); UNEP: Cambridge, UK, 2012.Google Scholar
  30. Crist, E., Mora, C., and Engelman, R. (2017). The interaction of human population, food production, and biodiversity protection. Science (New York, N.Y.) 356(6335): 260–264.  https://doi.org/10.1126/science.aal2011.CrossRefGoogle Scholar
  31. Cunningham, C., and Beazley, K. (2018). Changes in Human Population Density and Protected Areas in Terrestrial Global Biodiversity Hotspots, 1995–2015. Land 7(4): 136.  https://doi.org/10.3390/land7040136.CrossRefGoogle Scholar
  32. Daily, G. C., and Ehrlich, P. R. (1992). Population, sustainability, and Earth’s carrying capacity. BioScience 42(10): 761–771.  https://doi.org/10.2307/1311995.CrossRefGoogle Scholar
  33. Daily, G. C., Ehrlich, A. H., and Ehrlich, P. R. (1994). Optimum Human Population Size. Population and Environment: A Journal of Interdisciplinary Studies 15(6): 469–475. Retrieved from https://link.springer.com/content/pdf/10.1007/BF02211719.pdf. Accessed 11 Aug 2019
  34. Dérer P. (2018). High human population density eliminates the positive effect of forest protection in a tropical biodiversity hotspot. The Overpopulation Project. Retrieved from https://overpopulation-project.com/2018/06/19/high-human-population-density-eliminates-the-positive-effect-of-forest-protection-in-a-tropical-biodiversity-hotspot/. Accessed 11 Aug 2019
  35. Diamond, K. (2012). Hotspots: Population Growth in Areas of High Biodiversity. News Security Beat. Retrieved from https://www.newsecuritybeat.org/2012/03/hotspots-population-growth-in-areas-of-high-biodiversity-2/. Accessed 11 Aug 2019
  36. Dietz, T., Rosa, E. A., and York, R. (2007). Driving the human ecological footprint. Frontiers in Ecology and the Environment 5(1): 13–18.  https://doi.org/10.1890/1540-9295(2007)5[13:DTHEF]2.0.CO;2.CrossRefGoogle Scholar
  37. Dirzo, R. (2013). Defaunation, alteration of trophic cascades and extinction of ecological processes: Consequences for ecosystems and humans. Atbc. Retrieved from https://atbc.confex.com/atbc/2013/webprogram/Paper1277.html. Accessed 11 Aug 2019
  38. Donald, P. F. (2004). Biodiversity impacts of some agricultural commodity production systems. Conservation Biology 18(1): 17–38.  https://doi.org/10.1111/j.1523-1739.2004.01803.x.CrossRefGoogle Scholar
  39. Dong, K., Hochman, G., Zhang, Y., Sun, R., Li, H., and Liao, H. (2018). CO2 emissions, economic and population growth, and renewable energy: Empirical evidence across regions. Energy Economics 75: 180–192.  https://doi.org/10.1016/J.ENECO.2018.08.017.CrossRefGoogle Scholar
  40. Douglas, L. R., and Alie, K. (2014). High-value natural resources: Linking wildlife conservation to international conflict, insecurity, and development concerns. Biological Conservation 171: 270–277.  https://doi.org/10.1016/J.BIOCON.2014.01.031.CrossRefGoogle Scholar
  41. Dreifus, C. (2006). A Global Advocate for the Meal That Cannot Speak For Itself. The New York Times. Retrieved from https://www.nytimes.com/2006/06/06/science/06conv.html?mtrref=undefined&gwh=DF4A0F650181C7E11A3EFE7F0F051162&gwt=pay. Accessed 11 Aug 2019
  42. Duffy, R., and St John, F. A. V. (2013). Poverty, Poaching and Trafficking: What are the links?  https://doi.org/10.12774/eod_hd059.jun2013.duffy.
  43. Ehrlich, P. (2013). Overpopulation and the Collapse of Civilization. Millennium Alliance for Humanity and the Biosphere (MAHB). Retrieved from https://mahb.stanford.edu/blog/overpopulation-and-the-collapse-of-civilization/?fbclid=IwAR2BuYxfMFjqVINVI6RqdNjib6rJJISEOgM5tfZIdbFHnvsEHS6nAaGGB3Y. Accessed 11 Aug 2019
  44. Ehrlich, P. R., Kareiva, P. M., and Daily, G. C. (2012). Securing Natural Capital and Expanding Equity to Rescale Civilization. Nature 486(7401): 68–73.  https://doi.org/10.1038/nature11157.CrossRefGoogle Scholar
  45. Eldridge, D. J., and Delgado-Baquerizo, M. (2017). Continental-scale Impacts of Livestock Grazing on Ecosystem Supporting and Regulating Services. Land Degradation & Development 28(4): 1473–1481.  https://doi.org/10.1002/ldr.2668.CrossRefGoogle Scholar
  46. Engelman, R. (2016). Africa’s Population Will Soar Dangerously Unless Woman Are More Empowered. Scientific American. Retrieved from https://www.scientificamerican.com/article/africa-s-population-will-soar-dangerously-unless-women-are-more-empowered/. Accessed 11 Aug 2019
  47. Estes, A. B., Kuemmerle, T., Kushnir, H., Radeloff, V. C., and Shugart, H. H. (2012). Land-Cover Change and Human Population Trends in the Greater Serengeti Ecosystem from 1984–2003. Biological Conservation 147(1): 255–263.  https://doi.org/10.1016/J.BIOCON.2012.01.010.CrossRefGoogle Scholar
  48. Estrada, A., Garber, P. A., Mittermeier, R. A., Wich, S., Gouveia, S., Dobrovolski, R., et al (2018). Primates in peril: The Significance of Brazil, Madagascar, Indonesia and the Democratic Republic of the Congo for Global Primate Conservation. PeerJ 6: e4869.  https://doi.org/10.7717/peerj.4869.CrossRefGoogle Scholar
  49. Fa, J. E., Peres, C. A., and Meeuwig, J. (2002). Bushmeat Exploitation in Tropical Forests: An Intercontinental Comparison. Conservation Biology 16(1): 232–237.  https://doi.org/10.1046/j.1523-1739.2002.00275.x.CrossRefGoogle Scholar
  50. Fa, J. E., Currie, D., and Meeuwig, J. (2003). Bushmeat and Food Security in the Congo Basin: Linkages between Wildlife and People’s Future. Environmental Conservation 30(01): 71–78.  https://doi.org/10.1017/S0376892903000067.CrossRefGoogle Scholar
  51. FAO. (2018). The State of World Fisheries and Aquaculture 2018 - Meeting the Sustainable Development Goals. Rome. Retrieved from http://www.fao.org/3/I9540EN/i9540en.pdf. Accessed 11 Aug 2019
  52. FAO. (2019). The State of the World’s Biodiversity for Food and Agriculture, J. Bélanger & D. Pilling (eds.). FAO Commission on Genetic Resources for Food and Agriculture Assessments. Rome. 572 pp. Retrieved from http://www.fao.org/3/CA3129EN/CA3129EN.pdf. Accessed 11 Aug 2019
  53. Foley, J. A., Defries, R., Asner, G. P., Barford, C., Bonan, G., Carpenter, S. R., et al (2005). Global consequences of land use. Science (New York, N.Y.) 309(5734): 570–574.  https://doi.org/10.1126/science.1111772.CrossRefGoogle Scholar
  54. Foreman, D., & Carroll, L. (2015). Man Swarm : How Overpopulation is Killing the Wild World. LiveTrue Books. Retrieved from https://books.google.pt/books?id=vm0nrgEACAAJ&dq=dave+foreman+man+swarm&hl=pt-PT&sa=X&ved=0ahUKEwjfs-b2jPTdAhVRyRoKHXL2Am4Q6AEIKDAA. Accessed 11 Aug 2019
  55. Frejka, T. (2017). Half the world’s population reaching below replacement fertility. NIUSSP. Retrieved from http://www.niussp.org/article/half-the-worlds-population-reaching-below-replacement-fertility/. Accessed 11 Aug 2019
  56. Gamu, J., Le Billon, P., and Spiegel, S. (2015). Extractive Industries and Poverty: A Review of Recent Findings and Linkage Mechanisms. The Extractive Industries and Society 2(1): 162–176.  https://doi.org/10.1016/J.EXIS.2014.11.001.CrossRefGoogle Scholar
  57. Geldmann, J., Joppa, L. N., and Burgess, N. D. (2014). Mapping Change in Human Pressure Globally on Land and within Protected Areas. Conservation Biology 28(6): 1604–1616.  https://doi.org/10.1111/cobi.12332.CrossRefGoogle Scholar
  58. Gerbens-Leenes, P. W., Nonhebel, S., and Krol, M. S. (2010). Food Consumption Patterns and Economic Growth. Increasing Affluence and the Use of Natural Resources. Appetite 55(3): 597–608.  https://doi.org/10.1016/J.APPET.2010.09.013.CrossRefGoogle Scholar
  59. Gibbs, H. K., Ruesch, A. S., Achard, F., Clayton, M. K., Holmgren, P., Ramankutty, N., and Foley, J. A. (2010). Tropical Forests were the Primary Sources of New Agricultural Land in the 1980s and 1990s. Proceedings of the National Academy of Sciences of the United States of America 107(38): 16732–16737.  https://doi.org/10.1073/pnas.0910275107.CrossRefGoogle Scholar
  60. Global Footprint Network (2018). Ecological Footprint per Person. Retrieved from https://data.footprintnetwork.org/#/.. Accessed 11 Aug 2019
  61. Götmark, F., Cafaro, P., and O’Sullivan, J. (2018). Aging Human Populations: Good for us, Good for the Earth. Trends in Ecology & Evolution 33(11): 851–862.  https://doi.org/10.1016/J.TREE.2018.08.015.CrossRefGoogle Scholar
  62. Gray, T. (2017). Empty Forest Syndrome – A Hauntingly Quiet Crisis. Wildlife Alliance. Retrieved from https://www.wildlifealliance.org/empty-forest-syndrome/. Accessed 11 Aug 2019
  63. Guttmacher Institute (2019). Just The Numbers - The Impact of U.S. International Family Planning Assistance, 2019. Retrieved from https://www.guttmacher.org/sites/default/files/article_files/2019_just_the_numbers_us.pdf. Accessed 11 Aug 2019
  64. Harding, R. (2018). A Proposal for a United Nations Framework Convention on Population Growth. MAHB. Retrieved from https://mahb.stanford.edu/blog/un-framework-population/. Accessed 11 Aug 2019
  65. Harrison, R. D. (2011). Emptying the Forest: Hunting and the Extirpation of Wildlife from Tropical Nature Reserves. BioScience 61(11): 919–924.  https://doi.org/10.1525/bio.2011.61.11.11.CrossRefGoogle Scholar
  66. Hassan, S. A., Zaman, K., and Gul, S. (2015). The Relationship between Growth-Inequality-Poverty Triangle and Environmental Degradation: Unveiling the Reality. Arab Economic and Business Journal 10(1): 57–71.  https://doi.org/10.1016/J.AEBJ.2014.05.007.CrossRefGoogle Scholar
  67. Hickey, C., Rieder, T. N., and Earl, J. (2016). Population Engineering and the Fight against Climate Change. Social Theory and Practice 42(4): 845–870 Retrieved from https://www.pdcnet.org/soctheorpract/content/soctheorpract_2016_0042_0004_0845_0870. Accessed 11 Aug 2019
  68. Holmern, T., Muya, J., and Røskaft, E. (2007). Local Law Enforcement and Illegal Bushmeat Hunting Outside the Serengeti National Park, Tanzania. Environmental Conservation 34(01): 55.  https://doi.org/10.1017/S0376892907003712.CrossRefGoogle Scholar
  69. Hubacek, K., Baiocchi, G., Feng, K., Muñoz Castillo, R., Sun, L., and Xue, J. (2017). Global Carbon Inequality. Energy, Ecology and Environment 2(6): 361–369.  https://doi.org/10.1007/s40974-017-0072-9.CrossRefGoogle Scholar
  70. Itkowitz, C. (2019). Sen. Mike Lee says we can solve climate change with more babies. Science says otherwise. The Washington Post. Retrieved from https://www.washingtonpost.com/politics/sen-mike-lee-says-we-can-solve-climate-change-with-more-babies-science-says-otherwise/2019/03/26/67f91b2e-4fed-11e9-88a1-ed346f0ec94f_story.html?utm_term=.160d85c5c599. Accessed 11 Aug 2019
  71. Jones, B. (2018). Deforestation surges in Virunga National Park in the wake of violence. Mongabay. Retrieved from https://news.mongabay.com/2018/10/deforestation-surges-in-virunga-national-park-in-the-wake-of-violence/. Accessed 11 Aug 2019
  72. Jones, K. R., Venter, O., Fuller, R. A., Allan, J. R., Maxwell, S. L., Negret, P. J., and Watson, J. E. M. (2018). One-third of global protected land is under intense human pressure. Science (New York, N.Y.) 360(6390): 788–791.  https://doi.org/10.1126/science.aap9565.CrossRefGoogle Scholar
  73. Joppa, L. N., Loarie, S. R., and Pimm, S. L. (2009). On Population Growth Near Protected Areas. PLoS ONE 4(1): e4279.  https://doi.org/10.1371/journal.pone.0004279.CrossRefGoogle Scholar
  74. Keskar, A., Raghavan, R., Kumkar, P., Padhye, A., and Dahanukar, N. (2017). Assessing the Sustainability of Subsistence Fisheries of Small Indigenous Fish Species: Fishing Mortality and Exploitation Of Hill Stream Loaches in India. Aquatic Living Resources 30: 13.  https://doi.org/10.1051/alr/2016036.CrossRefGoogle Scholar
  75. Klanderud, K., Mbolatiana, H. Z. H., Vololomboahangy, M. N., Radimbison, M. A., Roger, E., Totland, Ø., and Rajeriarison, C. (2010). Recovery of Plant Species Richness and Composition After Slash-and-Burn Agriculture in a Tropical Rainforest in Madagascar. Biodiversity and Conservation 19(1): 187–204.  https://doi.org/10.1007/s10531-009-9714-3.CrossRefGoogle Scholar
  76. Knapp, E. J. (2012). Why Poaching Pays: A Summary of Risks and Benefits Illegal Hunters Face in Western Serengeti, Tanzania. Tropical Conservation Science 5(4): 434–445.  https://doi.org/10.1177/194008291200500403.CrossRefGoogle Scholar
  77. Kolankiewicz, L. (2012). Overpopulation versus Biodiversity How a Plethora of People Produces a Paucity of Wildlife. In Philip Cafaro & Eileen Crist (Eds.), Life on the Brink - Environmentalists Confront Overpopulation (pp. 75–91). Georgia University Press. Retrieved from https://books.google.pt/books?id=heOrAAAAQBAJ&pg=PA75&dq=life+on+the+brink+environmentalists+overpopulation+versus+biodiversity+how+a+plethora+of+people+produxes+a+paucity+of+life&hl=pt-PT&sa=X&ved=0ahUKEwjvu5vD6NTgAhWS4IUKHVT3CecQ6AEIKzAA#v=onepage&q=lif. Accessed 11 Aug 2019
  78. Kopnina, H., and Washington, H. (2016). Discussing Why Population Growth is Still Ignored or Denied. Chinese Journal of Population Resources and Environment 14(2): 133–143.  https://doi.org/10.1080/10042857.2016.1149296.CrossRefGoogle Scholar
  79. Krishnadas, M., Agarwala, M., Sridhara, S., and Eastwood, E. (2018). Parks Protect Forest Cover in a Tropical Biodiversity Hotspot, but High Human Population Densities can Limit Success. Biological Conservation 223: 147–155.  https://doi.org/10.1016/J.BIOCON.2018.04.034.CrossRefGoogle Scholar
  80. Kroodsma, D. A., Mayorga, J., Hochberg, T., Miller, N. A., Boerder, K., Ferretti, F., et al (2018). Tracking the global footprint of fisheries. Science (New York, N.Y.) 359(6378): 904–908.  https://doi.org/10.1126/science.aao5646.CrossRefGoogle Scholar
  81. Kuhlemann, K. (2018a). “Any size Population will do?” The Fallacy of Aiming for Stabilization of Human Numbers. The Ecological Citizen 1(2): 181–189 Retrieved from https://www.ecologicalcitizen.net/pdfs/v01n2-11.pdf. Accessed 11 Aug 2019
  82. Kuhlemann, K. (2018b). Complexity, creeping normalcy and conceit: Sexy and unsexy catastrophic risks. Foresight, FS-05-2018-0047.  https://doi.org/10.1108/FS-05-2018-0047.
  83. Kunzmann, K. (2018). How Population and Global Resources are Reaching a Boiling Point. MDMagazine. Retrieved from https://www.mdmag.com/post-conference-perspectives/ats-2018-perspectives/how-population-and-global-resources-are-reaching-a-boiling-point. Accessed 11 Aug 2019
  84. Laurance, W. (2018). If you Can’t Build Well, then Build Nothing at All. Nature 563(7731): 295–295.  https://doi.org/10.1038/d41586-018-07348-3.CrossRefGoogle Scholar
  85. LeDoux, L. (2009). Does Population Growth Impact Climate Change? Scientific American. Retrieved from https://www.scientificamerican.com/article/population-growth-climate-change/. Accessed 11 Aug 2019
  86. Leflaive, X. (2012). Water Outlook to 2050: The OECD calls for early strategic action. Global water forum. Retrieved from http://www.globalwaterforum.org/2012/05/21/water-outlook-to-2050-the-oecd-calls-for-early-and-strategic-action/. Accessed 11 Aug 2019
  87. Lemieux, A. M., and Clarke, R. V. (2009). The International Ban On Ivory Sales and its Effects on Elephant Poaching in Africa. British Journal of Criminology 49(4): 451–471.  https://doi.org/10.1093/bjc/azp030.CrossRefGoogle Scholar
  88. Levi, T., Shepard, G. H., Ohl-Schacherer, J., Wilmers, C. C., Peres, C. A., and Yu, D. W. (2011). Spatial Tools for Modeling the Sustainability of Subsistence Hunting in Tropical Forests. Ecological Applications 21(5): 1802–1818.  https://doi.org/10.1890/10-0375.1.CrossRefGoogle Scholar
  89. Lin, C. (2017). ‘Slash-and-Burn Agriculture’ Is Exactly as Bad as it Sounds. Odissey. Retrieved from https://www.theodysseyonline.com/slash-burn-agriculture-bad-rainforest-global-warming. Accessed 11 Aug 2019
  90. Loibooki, M., Hofer, H., Campbell, K. L. I., and East, M. L. (2002). Bushmeat Hunting by Communities Adjacent to the Serengeti National Park, Tanzania: The importance of Livestock Ownership and Alternative Sources of Protein and Income. Environmental Conservation 29(03): 391–398.  https://doi.org/10.1017/S0376892902000279.CrossRefGoogle Scholar
  91. Luck, G. W. (2007). A review of the Relationships between Human Population Density and Biodiversity. Biological Reviews 82(4): 607–645.  https://doi.org/10.1111/j.1469-185x.2007.00028.x.CrossRefGoogle Scholar
  92. Machovina, B., and Feeley, K. J. (2014). Taking a Bite Out of Biodiversity. Science 343(6173): 838–838.  https://doi.org/10.1126/science.343.6173.838-a.CrossRefGoogle Scholar
  93. Machovina, B., Feeley, K. J., and Ripple, W. J. (2015). Biodiversity Conservation: The key is Reducing Meat Consumption. Science of The Total Environment 536: 419–431.  https://doi.org/10.1016/J.SCITOTENV.2015.07.022.CrossRefGoogle Scholar
  94. Maddocks, A., Otto, B., & Luo, T. (2016). The Future of Fresh Water. World Resources Institute. Retrieved from https://www.wri.org/blog/2016/06/future-fresh-water. Accessed 11 Aug 2019
  95. Marques, A., Martins, I. S., Kastner, T., Plutzar, C., Theurl, M. C., Eisenmenger, N., et al (2019). Increasing Impacts of Land Use on Biodiversity and Carbon Sequestration Driven by Population and Economic Growth. Nature Ecology & Evolution 3(4): 628–637.  https://doi.org/10.1038/s41559-019-0824-3.CrossRefGoogle Scholar
  96. Mascia, M. B., Pailler, S., Krithivasan, R., Roshchanka, V., Burns, D., Mlotha, M. J., et al (2014). Protected Area Downgrading, Downsizing, and Degazettement (PADDD) in Africa, Asia, and Latin America and the Caribbean, 1900–2010. Biological Conservation 169: 355–361.  https://doi.org/10.1016/J.BIOCON.2013.11.021.CrossRefGoogle Scholar
  97. Maverick, T. (2014). China's Hunger for Soy to Exceed Global Supply. Wall Street Daily. Retrieved from https://www.trefis.com/stock/soyb/articles/265113/china%E2%80%99s-hunger-for-soy-to-exceed-global-supply/2014-11-17. Accessed 11 Aug 2019
  98. McKee, J. K. (2005). Sparing Nature : The conflict between Human Population Growth and Earth’s Biodiversity. Rutgers University Press. Retrieved from https://books.google.pt/books?id=omgIyInG8qEC&dq=sparing+nature&hl=pt-PT&source=gbs_navlinks_s. Accessed 11 Aug 2019
  99. Mckee, J. (2012). The human population footprint on global biodiversity. In Philip Cafaro & Eileen Crist (Ed.), Life on the Brink: Environmentalists Confront Overpopulation (p. 342). The University of Georgia Press. Retrieved from http://www.riddledchain.org/FootprintsChapter.pdf. Accessed 11 Aug 2019
  100. McKee, J. K., Sciulli, P. W., Fooce, C. D., and Waite, T. A. (2004). Forecasting Global Biodiversity Threats Associated with Human Population Growth. Biological Conservation 115(1): 161–164.  https://doi.org/10.1016/S0006-3207(03)00099-5.CrossRefGoogle Scholar
  101. McKee, J., Chambers, E., and Guseman, J. (2013). Human Population Density and Growth Validated as Extinction Threats to Mammal and Bird Species. Human Ecology 41(5): 773–778.  https://doi.org/10.1007/s10745-013-9586-8.CrossRefGoogle Scholar
  102. Mittermeier, R. A., Turner, W. R., Larsen, F. W., Brooks, T. M., and Gascon, C. (2011). Global biodiversity conservation: The critical role of hotspots. In Biodiversity hotspots, Springer Berlin Heidelberg, Berlin, pp. 3–22.  https://doi.org/10.1007/978-3-642-20992-5_1.CrossRefGoogle Scholar
  103. Murtaugh, P. A., and Schlax, M. G. (2009). Reproduction and the Carbon Legacies of Individuals. Global Environmental Change 19(1): 14–20.  https://doi.org/10.1016/j.gloenvcha.2008.10.007.CrossRefGoogle Scholar
  104. Myers, N. (1988). Threatened biotas: “Hot spots” in tropical forests. The Environmentalist 8(3): 187–208.  https://doi.org/10.1007/BF02240252.CrossRefGoogle Scholar
  105. Myers, N., Mittermeier, R. A., Mittermeier, C. G., da Fonseca, G. A. B., and Kent, J. (2000). Biodiversity Hotspots for Conservation Priorities. Nature 403(6772): 853–858.  https://doi.org/10.1038/35002501.CrossRefGoogle Scholar
  106. NASA (2009). Subsistence Agricultural Expansion Threatening Biodiversity. Land-Cover/Land-Use Change Program (LCLUC). Retrieved from https://lcluc.umd.edu/hotspot/subsistence-agricultural-expansion-threatening-biodiversity. Accessed 11 Aug 2019
  107. Nasi, R., Taber, A., and Van Vliet, N. (2011). Empty Forests, Empty Stomachs? Bushmeat and Livelihoods in the Congo and Amazon Basins. International Forestry Review 13(3): 355–368.  https://doi.org/10.1505/146554811798293872.CrossRefGoogle Scholar
  108. Naughton-Treves, L., Kammen, D. M., and Chapman, C. (2007). Burning Biodiversity: Woody Biomass use by Commercial and Subsistence Groups in Western Uganda’s Forests. Biological Conservation 134(2): 232–241.  https://doi.org/10.1016/J.BIOCON.2006.08.020.CrossRefGoogle Scholar
  109. Naughton-Treves, L., Alix-Garcia, J., and Chapman, C. A. (2011). Lessons About Parks and Poverty from a Decade of Forest Loss and Economic Growth around Kibale National Park, Uganda. Proceedings of the National Academy of Sciences of the United States of America 108(34): 13919–13924.  https://doi.org/10.1073/pnas.1013332108.CrossRefGoogle Scholar
  110. Newbold, T. (2019). The Trouble with Trade. Nature Ecology & Evolution 3(4): 522–523.  https://doi.org/10.1038/s41559-019-0816-3.CrossRefGoogle Scholar
  111. Nielsen, M. R., Pouliot, M., Meilby, H., Smith-Hall, C., and Angelsen, A. (2017). Global Patterns and Determinants of the Economic Importance of Bushmeat. Biological Conservation 215: 277–287.  https://doi.org/10.1016/J.BIOCON.2017.08.036.CrossRefGoogle Scholar
  112. Nielsen, M. R., Meilby, H., Smith-Hall, C., Pouliot, M., and Treue, T. (2018). The Importance of Wild Meat in the Global South. Ecological Economics 146: 696–705.  https://doi.org/10.1016/J.ECOLECON.2017.12.018.CrossRefGoogle Scholar
  113. NOSS, R. F., DOBSON, A. P., BALDWIN, R., BEIER, P., DAVIS, C. R., DELLASALA, D. A., et al (2012). Bolder Thinking for Conservation. Conservation Biology 26(1): 1–4.  https://doi.org/10.1111/j.1523-1739.2011.01738.x.CrossRefGoogle Scholar
  114. Ogutu, J. O., Piepho, H.-P., Said, M. Y., Ojwang, G. O., Njino, L. W., Kifugo, S. C., and Wargute, P. W. (2016). Extreme Wildlife Declines and Concurrent Increase in Livestock Numbers in Kenya: What are the Causes?  https://doi.org/10.1371/journal.pone.0163249.CrossRefGoogle Scholar
  115. Ord, T. (2014). Chapter 3. Overpopulation or Underpopulation? Retrieved from http://amirrorclear.net/files/overpopulation-or-underpopulation.pdf. Accessed 11 Aug 2019
  116. Owens, I. P., and Bennett, P. M. (2000). Ecological Basis of Extinction Risk in Birds: Habitat Loss versus Human Persecution and Introduced Predators. Proceedings of the National Academy of Sciences of the United States of America 97(22): 12144–12148.  https://doi.org/10.1073/pnas.200223397.CrossRefGoogle Scholar
  117. Oxfam International (2015). Extreme Carbon Inequality. Retrieved from https://www.oxfam.org/en/research/extreme-carbon-inequality. Accessed 11 Aug 2019
  118. Pecl, G. T., Araújo, M. B., Bell, J. D., Blanchard, J., Bonebrake, T. C., Chen, I.-C., et al (2017). Biodiversity redistribution under climate change: Impacts on ecosystems and human well-being. Science (New York, N.Y.) 355(6332): eaai9214.  https://doi.org/10.1126/science.aai9214.CrossRefGoogle Scholar
  119. Phillips, A. (2018). Thesis immigration ethics: Creating flourishing, just, and sustainable societies in a world of limits. Submitted by Colorado State University. Retrieved from https://overpopulationproject.files.wordpress.com/2018/09/phillips_addison.pdf. Accessed 11 Aug 2019
  120. Phillips, A., Cafaro, P., Holmes, K. S., Iii, R., & Shulman, S. (2018). Immigration Ethics: Creating Flourishing, just, and Sustainable Societies in a World of Limits. Fort Collins. Retrieved from https://overpopulationproject.files.wordpress.com/2018/09/phillips_addison.pdf. Accessed 11 Aug 2019
  121. Pimentel, D., Harman, R., Pacenza, M., Pecarsky, J., and Pimentel, M. (1994). Natural Resources and an Optimum Human Population. Population and Environment 15(5): 347–369.  https://doi.org/10.1007/BF02208317.CrossRefGoogle Scholar
  122. Pison, G. (2017). Is the Earth over-populated. The Conversation. Retrieved from https://theconversation.com/is-the-earth-over-populated-86555. Accessed 11 Aug 2019
  123. Population Matters (2018). How to Feed the World Without Destroying it. Population Matters News. Retrieved from https://populationmatters.org/news/2018/12/07/how-feed-world-without-destroying-it. Accessed 11 Aug 2019
  124. Population Matters (2019). Solutions. Retrieved from https://populationmatters.org/solutions. Accessed 11 Aug 2019
  125. Population Media Center (2018). As Human Population Grows, Global Biodiversity Continues Its Freefall. Retrieved from https://info.populationmedia.org/populationletters/human-population-grows-global-biodiversity-freefalls?fbclid=IwAR1-pF9elXHPPhxO2f0clXyZJA0t9pgUzYXjBOta4Xrt1o5r23D0F75_tLI. Accessed 11 Aug 2019
  126. Population Reference Bureau (2018). 2018 World Population Data Sheet. Retrieved from https://www.prb.org/wp-content/uploads/2018/08/2018_WPDS.pdf. Accessed 11 Aug 2019
  127. PopulationPyramid.net (2017). Madagascar's Population. Retrieved from https://www.populationpyramid.net/madagascar/2017/. Accessed 11 Aug 2019
  128. Project Drawdown (2019). Summary of Solutions by Overall Rank. Retrieved from https://www.drawdown.org/solutions-summary-by-rank. Accessed 11 Aug 2019
  129. Randers, J., Rockström, J., Stoknes, E., Golüke, U., Collste, D., & Cornell, S. (2018). Stockholm Resilience Centre Transformation is feasible. Retrieved from https://www.stockholmresilience.org/download/18.51d83659166367a9a16353/1539675518425/. Accessed 11 Aug 2019
  130. Reddy, C. S., Jha, C. S., and Dadhwal, V. K. (2016). Assessment and Monitoring of Long-Term Forest Cover Changes (1920-2013) in Western Ghats biodiversity hotspot. Journal of Earth System Science 125(1): 103–114.  https://doi.org/10.1007/s12040-015-0645-y.CrossRefGoogle Scholar
  131. Rees, W. E. (2006). Globalization, Trade and Migration: Undermining sustainability. Ecological Economics 59(2): 220–225.  https://doi.org/10.1016/J.ECOLECON.2005.12.021.CrossRefGoogle Scholar
  132. Rieder, T. N. (2016). Toward a small family ethic : how overpopulation and climate change are affecting the morality of procreation. (Springer, Ed.) (ilustrated). Retrieved from https://books.google.pt/books/about/Toward_a_Small_Family_Ethic.html?id=8TN9DAAAQBAJ&redir_esc=y. Accessed 11 Aug 2019
  133. Rieder, T. (2017). Science proves kids are bad for earth. Morality suggests we stop having them. NBC News. Retrieved from https://www.nbcnews.com/think/opinion/science-proves-kids-are-bad-earth-morality-suggests-we-stop-ncna820781. Accessed 11 Aug 2019
  134. Riggio, J., Jacobson, A. P., Hijmans, R. J., and Caro, T. (2019). How Effective are the Protected Areas of East Africa? Global Ecology and Conservation 17: e00573.  https://doi.org/10.1016/J.GECCO.2019.E00573.CrossRefGoogle Scholar
  135. Ripple, W. J., Estes, J. A., Beschta, R. L., Wilmers, C. C., Ritchie, E. G., Hebblewhite, M., et al (2014). Status and Ecological Effects of the World’s Largest Carnivores. Science 343(6167): 1241484–1241484.  https://doi.org/10.1126/science.1241484.CrossRefGoogle Scholar
  136. Ripple, W. J., Newsome, T. M., Wolf, C., Dirzo, R., Everatt, K. T., Galetti, M., et al (2015). Collapse of the World’s Largest Herbivores. Science Advances 1(4): e1400103.  https://doi.org/10.1126/sciadv.1400103.CrossRefGoogle Scholar
  137. Ripple, W. J., Abernethy, K., Betts, M. G., Chapron, G., Dirzo, R., Galetti, M., et al (2016). Bushmeat Hunting and Extinction Risk to the World’s Mammals. Royal Society Open Science 3(10): 160498.  https://doi.org/10.1098/rsos.160498.CrossRefGoogle Scholar
  138. Ripple, W. J., Wolf, C., Newsome, T. M., Galetti, M., Alamgir, M., Crist, E., et al (2017). World scientists’ warning to humanity: A second notice. BioScience 67(12): 1026–1028.  https://doi.org/10.1093/biosci/bix125.CrossRefGoogle Scholar
  139. Ripple, W. J., Wolf, C., Newsome, T. M., Betts, M. G., Ceballos, G., Courchamp, F., et al (2019). Are we eating the world’s megafauna to extinction? Conservation Letters: e12627–10.1111/conl.12627.Google Scholar
  140. Robinson, J. G., and Bennett, E. L. (2000). Hunting for sustainability in tropical forests, Columbia University Press.Google Scholar
  141. Robinson, J. G., and Bennett, E. L. (2004). Having your wildlife and eating it too: An analysis of hunting sustainability across tropical ecosystems. Animal Conservation 7(4): 397–408.  https://doi.org/10.1017/S1367943004001532.CrossRefGoogle Scholar
  142. Roser, M., & Ritchie, H. (2019). "Yields and Land Use in Agriculture". Retrieved from: 'https://ourworldindata.org/yields-and-land-use-in-agriculture' Accessed 11 Aug 2019 [Online Resource].
  143. Rovero, F., Mtui, A., Kitegile, A., Jacob, P., Araldi, A., and Tenan, S. (2015). Primates Decline Rapidly in Unprotected Forests: Evidence from a Monitoring Program with Data Constraints. PLOS ONE 10(2): e0118330.  https://doi.org/10.1371/journal.pone.0118330.CrossRefGoogle Scholar
  144. Searchinger, T., et al. (2018). Creating a Sustainable Food Future. World Resources Institute. Retrieved from https://www.wri.org/publication/creating-sustainable-food-future. Accessed 11 Aug 2019
  145. Sen, B. (2003). Drivers of Escape and Descent: Changing Household Fortunes in Rural Bangladesh. World Development 31(3): 513–534.  https://doi.org/10.1016/S0305-750X(02)00217-6.CrossRefGoogle Scholar
  146. Serra, G. (2015). Over-grazing and desertification in the Syrian steppe are the root causes of war. The Ecologist. Retrieved from https://theecologist.org/2015/jun/05/over-grazing-and-desertification-syrian-steppe-are-root-causes-war. Accessed 11 Aug 2019
  147. Sloan, S., Jenkins, C. N., Joppa, L. N., Gaveau, D. L. A., and Laurance, W. F. (2014). Remaining Natural Vegetation in the Global Biodiversity Hotspots. Biological Conservation 177: 12–24.  https://doi.org/10.1016/J.BIOCON.2014.05.027.CrossRefGoogle Scholar
  148. Sloan, S., Campbell, M. J., Alamgir, M., Engert, J., Ishida, F. Y., Senn, N., et al (2019). Hidden Challenges for Conservation and Development along the Trans-Papuan Economic Corridor. Environmental Science & Policy 92: 98–106.  https://doi.org/10.1016/J.ENVSCI.2018.11.011.CrossRefGoogle Scholar
  149. Song, X.-P., Hansen, M. C., Stehman, S. V., Potapov, P. V., Tyukavina, A., Vermote, E. F., and Townshend, J. R. (2018). Global Land Change from 1982 to 2016. Nature 560(7720): 639–643.  https://doi.org/10.1038/s41586-018-0411-9.CrossRefGoogle Scholar
  150. Spracklen, B. D., Kalamandeen, M., Galbraith, D., Gloor, E., and Spracklen, D. V. (2015). A Global Analysis of Deforestation in Moist Tropical Forest Protected Areas. PLOS ONE 10(12): e0143886.  https://doi.org/10.1371/journal.pone.0143886.CrossRefGoogle Scholar
  151. Springmann, M., Clark, M., Mason-D’Croz, D., Wiebe, K., Bodirsky, B. L., Lassaletta, L., et al (2018). Options for Keeping the Food System within Environmental Limits. Nature 562(7728): 519–525.  https://doi.org/10.1038/s41586-018-0594-0.CrossRefGoogle Scholar
  152. Stallings, B. (2002). Population growth: The multiplication factor. Minnesotans for sustainability. Retrieved from http://www.mnforsustain.org/stallings_b_stop_population_growth.htm. Accessed 11 Aug 2019
  153. State of the Tropics (2017) Sustainable infrastructure for the tropics. James Cook University, Townsville. Retrieved from https://www.jcu.edu.au/__data/assets/pdf_file/0004/473503/SOTT-2017-Infrastructure-Report.pdf. Accessed 11 Aug 2019
  154. Sun, J., Mooney, H., Wu, W., Tang, H., Tong, Y., Xu, Z., et al (2018). Importing Food Damages Domestic Environment: Evidence from Global Soybean Trade. Proceedings of the National Academy of Sciences of the United States of America 115(21): 5415–5419.  https://doi.org/10.1073/pnas.1718153115.CrossRefGoogle Scholar
  155. The Overpopulation Project (2019). Solutions to overpopulation and what you can do. Retrieved from https://overpopulation-project.com/solutions-to-overpopulation-and-what-you-can-do/. Accessed 11 Aug 2019
  156. The World Bank (2019). CO2 emissions (kt). Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, Tennessee, United States. Retrieved from https://data.worldbank.org/indicator/EN.ATM.CO2E.KT?end=2018&start=1960&view=chart. Accessed 11 Aug 2019
  157. Tilman, D., Fargione, J., Wolff, B., D’Antonio, C., Dobson, A., Howarth, R., et al (2001). Forecasting agriculturally driven global environmental change. Science (New York, N.Y.) 292(5515): 281–284.  https://doi.org/10.1126/science.1057544.CrossRefGoogle Scholar
  158. Tucker, M. A., Böhning-Gaese, K., Fagan, W. F., Fryxell, J. M., Van Moorter, B., Alberts, S. C., et al (2018). Moving in the Anthropocene: Global reductions in terrestrial mammalian movements. Science (New York, N.Y.) 359(6374): 466–469.  https://doi.org/10.1126/science.aam9712.CrossRefGoogle Scholar
  159. UN Environment (2019). Global Environment Outlook – GEO-6: Healthy Planet, Healthy People. Nairobi. Retrieved https://wedocs.unep.org/handle/20.500.11822/27539. Accessed 11 Aug 2019
  160. UNDESA (2017a). World Population Prospects: The 2017 Revision, Key Findings and Advance Tables. ESA/P/WP/248. Retrieved from https://population.un.org/wpp/Publications/Files/WPP2017_KeyFindings.pdf. Accessed 11 Aug 2019
  161. UNDESA (2017b). Government policies to raise or lower the fertility level. United Nations Department of Economic and Social Affairs Population Division. Retrieved from https://www.un.org/en/development/desa/population/publications/pdf/popfacts/PopFacts_2017-10.pdf. Accessed 11 Aug 2019
  162. Union of Concerned Scientists (1992). 1992 World Scientists’ Warning to Humanity. Retrieved from https://www.ucsusa.org/sites/default/files/attach/2017/11/World%20Scientists%27%20Warning%20to%20Humanity%201992.pdf. Accessed 11 Aug 2019
  163. Vidal, J. (2019). The Rapid Decline Of The Natural World Is A Crisis Even Bigger Than Climate Change. The HuffPost. Retrieved from https://www.huffpost.com/entry/nature-destruction-climate-change-world-biodiversity_n_5c49e78ce4b06ba6d3bb2d44?fbclid=IwAR1K5DWS2Dt2v4M6KTUxiLepY4qOMr9ENqgNELVKEdA6PJ6ZacXAA4qinrE. Accessed 11 Aug 2019
  164. Vijay, V., Pimm, S. L., Jenkins, C. N., and Smith, S. J. (2016). The Impacts of Oil Palm on Recent Deforestation and Biodiversity Loss. PLOS ONE 11(7): e0159668.  https://doi.org/10.1371/journal.pone.0159668.CrossRefGoogle Scholar
  165. Vilà, M., Espinar, J. L., Hejda, M., Hulme, P. E., Jarošík, V., Maron, J. L., et al (2011). Ecological Impacts of Invasive Alien Plants: A Meta-Analysis of their Effects on Species, Communities and Ecosystems. Ecology Letters 14(7): 702–708.  https://doi.org/10.1111/j.1461-0248.2011.01628.x.CrossRefGoogle Scholar
  166. Waeber, P. O., Wilmé, L., Mercier, J.-R., Camara, C., and Lowry, P. P. (2016). How Effective have Thirty Years of Internationally Driven Conservation and Development Efforts been in Madagascar? PLOS ONE 11(8): e0161115.  https://doi.org/10.1371/journal.pone.0161115.CrossRefGoogle Scholar
  167. Watmough, G. R., Atkinson, P. M., Saikia, A., and Hutton, C. W. (2016). Understanding the Evidence Base for Poverty–Environment Relationships using Remotely Sensed Satellite Data: An example from Assam, India. World Development 78: 188–203.  https://doi.org/10.1016/J.WORLDDEV.2015.10.031.CrossRefGoogle Scholar
  168. Watson, J. E. M., Dudley, N., Segan, D. B., and Hockings, M. (2014). The Performance and Potential of Protected Areas. Nature 515(7525): 67–73.  https://doi.org/10.1038/nature13947.CrossRefGoogle Scholar
  169. Watson, J. E. M., Venter, O., Lee, J., Jones, K. R., Robinson, J. G., Possingham, H. P., and Allan, J. R. (2018). Protect the Last of the Wild. Nature 563(7729): 27–30.  https://doi.org/10.1038/d41586-018-07183-6.CrossRefGoogle Scholar
  170. Watts, J. (2018). Habitat loss threatens all our futures, world leaders warned. The Guardian. Retrieved from https://www.theguardian.com/world/2018/nov/17/habitat-loss-biodiversity-wildlife-climate-change?fbclid=IwAR1xgZxpw1p44AptIP2NGJG2PP5OWyXc0N1TjdoJcscet9bMckClnyoqkxM. Accessed 11 Aug 2019
  171. Weinzettel, J., Hertwich, E. G., Peters, G. P., Steen-Olsen, K., and Galli, A. (2013). Affluence Drives the Global Displacement of Land Use. Global Environmental Change 23(2): 433–438.  https://doi.org/10.1016/J.GLOENVCHA.2012.12.010.CrossRefGoogle Scholar
  172. Western, D., Groom, R., and Worden, J. (2009). The impact of Subdivision and Sedentarization of Pastoral Lands on Wildlife in an African Savanna Ecosystem. Biological Conservation 142(11): 2538–2546.  https://doi.org/10.1016/J.BIOCON.2009.05.025.CrossRefGoogle Scholar
  173. Wiedmann, T., and Lenzen, M. (2018). Environmental and Social Footprints of International Trade. Nature Geoscience 11(5): 314–321.  https://doi.org/10.1038/s41561-018-0113-9.CrossRefGoogle Scholar
  174. Wilkie, D. S., and Carpenter, J. F. (1999). Bushmeat Hunting in the Congo Basin: An Assessment of Impacts and Options for Mitigation. Biodiversity and Conservation 8(7): 927–955. Retrieved from  https://doi.org/10.1023/A:1008877309871. Accessed 11 Aug 2019
  175. Wilkie, D. S., Starkey, M., Abernethy, K., Effa, E. N., Telfer, P., & Godoy, R. (2005). Role of Prices and Wealth in Consumer Demand for Bushmeat in Gabon, Central Africa. Conservation Biology (Vol. 19). Retrieved from https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1523-1739.2005.00372.x. Accessed 11 Aug 2019
  176. Wilkinson, A. (2014). Expanding tropics will play greater global role, report predicts. Science. Retrieved from https://www.sciencemag.org/news/2014/06/expanding-tropics-will-play-greater-global-role-report-predicts. Accessed 11 Aug 2019
  177. Williams, J. (2011). Human Population and the Hotspots Revisited: A 2010 Assessment. In Biodiversity hotspots: distribution and protection of conservation priority areas (pp. 61–81).  https://doi.org/10.1007/978-3-642-20992-5_4
  178. Wittemyer, G., Elsen, P., Bean, W. T., Burton, A. C. O., and Brashares, J. S. (2008). Accelerated human population growth at protected area edges. Science (New York, N.Y.) 321(5885): 123–126.  https://doi.org/10.1126/science.1158900.CrossRefGoogle Scholar
  179. Wong, T., & Yeoh, B. S. A. (2003). Fertility and the Family: An Overview of Pro-Natalist Population Policies in Singapore. Singapore. Retrieved from https://cpb-us-e1.wpmucdn.com/share.nanjing-school.com/dist/1/43/files/2017/10/Singapore-population-policies-25xuy3q.pdf. Accessed 11 Aug 2019
  180. WWAP (UNESCO World Water Assessment Programme). (2019). The united NationsWorld water development report 2019: Leaving no one behind. Paris, UNESCO. Retrieved from https://en.unesco.org/water-security/wwap/wwdr/2019. Accessed 11 Aug 2019
  181. WWF. (2018). Living Planet Report - 2018: Aiming Higher. Grooten, M. and Almond, R.E.A.(Eds). WWF, Gland, Switzerland. Retrieved from j.Google Scholar
  182. Zhou, C., Elshkaki, A., and Graedel, T. E. (2018). Global Human Appropriation of Net Primary Production and Associated Resource Decoupling: 2010–2050. Environmental Science & Technology 52(3): 1208–1215.  https://doi.org/10.1021/acs.est.7b04665.CrossRefGoogle Scholar

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Faculty of SciencesUniversity of LisbonLisbonPortugal

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