The Human Footprint on Islands - The Ecological Impact of Discovery and Colonization

A special issue of Quaternary (ISSN 2571-550X).

Deadline for manuscript submissions: closed (30 September 2020) | Viewed by 19685

Special Issue Editors

Institute of Earth Sciences Jaume Almera (ICTJA-CSIC), 08028 Barcelona, Spain
Interests: paleoecology and palynology; island biogeography; climate change; human arrival and extinction
Island Ecology and Biogeography Group, University of La Laguna, 38200 La Laguna, Spain
Interests: palaeoecology; island biogeography; plant ecology; human impact; forest dynamics; palaeoenvironmental DNA
Manaaki Whenua Landcare Research, 7608 Lincoln, New Zealand
Interests: ancient DNA; extinctions; human impacts on ecosystems; paleodiets; paleoecology; palynology
School of Geography and Environmental Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK
Interests: palaeoecology; biogeography

Special Issue Information

Dear Colleagues,

The discovery and settlement of previously-uninhabited land masses around the world caused dramatic changes to local ecosystems and biotas. These changes were particularly evident on islands, where human settlement usually marked the beginning of a period of habitat destruction and extinctions of local flora and fauna. Although extinctions are perhaps the most widely known impact, they represent only part of the transformation that was set in motion after an island´s settlement. For example, distribution range shifts and extinctions led to the loss of biotic interactions, while new interactions were created following the introduction of invasive species. In the last decade, an increasing number of studies have reported novel and unprecedented anthropogenic pressures on island ecosystems. An improved understanding of the human footprint on islands will provide valuable information for biodiversity conservation.

In this Special Issue, we will study baseline conditions and drivers of ecosystem change on islands prior to human arrival and examine the timing and mode of human settlement to examine subsequent ecological changes. In particular, we are interested in quantitative studies of island ecosystem changes following their initial discovery and settlement. We welcome contributions from a wide range of Quaternary disciplines—preferably interdisciplinary or multi-proxy studies—across different timescales. Examples include ecological baseline studies (e.g., the effects of sea level changes during glacial and interglacial periods on island biotas), resilience or vulnerability of island biotas to natural and anthropogenic climate change, studies on (pre-)historical human land use, and studies on current threats, such as habitat loss and biological invasion.

Dr. Erik de Boer
Dr. Lea de Nascimento
Dr. Jamie Wood
Dr. Sandra Nogué
Guest Editors

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Keywords

  • Paleoecology
  • Landscape use and change
  • Early discovery
  • Community dynamics
  • Restoration ecology
  • Fire regime
  • Historical land use

Published Papers (3 papers)

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Research

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24 pages, 2581 KiB  
Article
Revisiting the Foraging Ecology and Extinction History of Two Endemic Vertebrates from Tenerife, Canary Islands
by Brooke Erin Crowley, Yurena Yanes, Stella Grace Mosher and Juan Carlos Rando
Quaternary 2019, 2(1), 10; https://0-doi-org.brum.beds.ac.uk/10.3390/quat2010010 - 21 Feb 2019
Cited by 6 | Viewed by 3705
Abstract
We used carbon (δ13C) and nitrogen (δ15N) isotopes to examine the foraging ecology of Tenerife giant rats (Canariomys bravoi) and lizards (Gallotia goliath) in northwestern Tenerife, which until recently, were the island’s largest terrestrial vertebrates. [...] Read more.
We used carbon (δ13C) and nitrogen (δ15N) isotopes to examine the foraging ecology of Tenerife giant rats (Canariomys bravoi) and lizards (Gallotia goliath) in northwestern Tenerife, which until recently, were the island’s largest terrestrial vertebrates. We combined new isotope data for 28 C. bravoi and 14 G. goliath with published regional data for both species and then compared these with data for co-occurring extant taxa and modern C3 plants. Isotope data suggest both extinct species relied primarily on C3 resources and were trophic omnivores. However, the two species appear to have partitioned their resources when living in sympatry. Isotopic overlap between C. bravoi and Rattus spp., and between G. goliath, extant Gallotia galloti, and introduced rabbits (Oryctolagus cuniculus) suggests reliance on similar foods. We radiocarbon dated four C. bravoi and two G. goliath with the most extreme isotope values. These new dates do not settle the question of what triggered the demise of either species. Nevertheless, the data are most consistent with anthropogenically-induced extinction. Temporal isotopic trends contradict expectations if regional climate were responsible, and confidence intervals for radiocarbon dates suggest it is highly likely that both species were present when humans first settled the island. Full article
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Review

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15 pages, 264 KiB  
Review
The Dodo and the Red Hen, A Saga of Extinction, Misunderstanding, and Name Transfer: A Review
by Anthony S. Cheke and Jolyon C. Parish
Quaternary 2020, 3(1), 4; https://0-doi-org.brum.beds.ac.uk/10.3390/quat3010004 - 18 Feb 2020
Cited by 5 | Viewed by 6351
Abstract
The chronology of observations of two extinct flightless birds in 17th century Mauritius, the dodo (Raphus cucullatus) and the red hen (Aphanapteryx bonasia), and what names or descriptions were used for them, is re-examined. It was concluded that the balance [...] Read more.
The chronology of observations of two extinct flightless birds in 17th century Mauritius, the dodo (Raphus cucullatus) and the red hen (Aphanapteryx bonasia), and what names or descriptions were used for them, is re-examined. It was concluded that the balance of probabilities is strongly against birds called dodaarsen without descriptions in the 1680s being dodos rather than red hens. The dodo had disappeared earlier due to predation by pigs, but a hiatus in settlement broke observational continuity, yet folklore preserved the name and transferred it to the red hen. The dodo’s extinction thus happened unobserved. Full article
16 pages, 3131 KiB  
Review
Human Discovery and Settlement of the Remote Easter Island (SE Pacific)
by Valentí Rull
Quaternary 2019, 2(2), 15; https://0-doi-org.brum.beds.ac.uk/10.3390/quat2020015 - 02 Apr 2019
Cited by 9 | Viewed by 9109
Abstract
The discovery and settlement of the tiny and remote Easter Island (Rapa Nui) has been a classical controversy for decades. Present-day aboriginal people and their culture are undoubtedly of Polynesian origin, but it has been debated whether Native Americans discovered the island before [...] Read more.
The discovery and settlement of the tiny and remote Easter Island (Rapa Nui) has been a classical controversy for decades. Present-day aboriginal people and their culture are undoubtedly of Polynesian origin, but it has been debated whether Native Americans discovered the island before the Polynesian settlement. Until recently, the paradigm was that Easter Island was discovered and settled just once by Polynesians in their millennial-scale eastward migration across the Pacific. However, the evidence for cultivation and consumption of an American plant—the sweet potato (Ipomoea batatas)—on the island before the European contact (1722 CE), even prior to the Europe-America contact (1492 CE), revived controversy. This paper reviews the classical archaeological, ethnological and paleoecological literature on the subject and summarizes the information into four main hypotheses to explain the sweet potato enigma: the long-distance dispersal hypothesis, the back-and-forth hypothesis, the Heyerdahl hypothesis, and the newcomers hypothesis. These hypotheses are evaluated in light of the more recent evidence (last decade), including molecular DNA phylogeny and phylogeography of humans and associated plants and animals, physical anthropology (craniometry and dietary analysis), and new paleoecological findings. It is concluded that, with the available evidence, none of the former hypotheses may be rejected and, therefore, all possibilities remain open. For future work, it is recommended to use the multiple working hypotheses framework and the strong inference method of hypothesis testing, rather than the ruling theory approach, very common in Easter Island research. Full article
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