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Extinct Madagascar: Picturing the Island's Past
     

Extinct Madagascar: Picturing the Island's Past

by Steven M. Goodman, William L. Jungers, Velizar Simeonovski (Illustrator)
 

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The landscapes of Madagascar have long delighted zoologists, who have discovered, in and among the island’s baobab trees and thickets, a dizzying array of animals, including something approaching one hundred species of lemur. Madagascar’s mammal fauna, for example, is far more diverse, and more endemic, than early explorers and naturalists ever dreamed

Overview

The landscapes of Madagascar have long delighted zoologists, who have discovered, in and among the island’s baobab trees and thickets, a dizzying array of animals, including something approaching one hundred species of lemur. Madagascar’s mammal fauna, for example, is far more diverse, and more endemic, than early explorers and naturalists ever dreamed of. But in the past 2,500 or so years—a period associated with natural climatic shifts and ecological change, as well as partially coinciding with the arrival of the island’s first human settlers—a considerable proportion of Madagascar’s forests have disappeared; and in the wake of this loss, a number of species unique to Madagascar have vanished forever into extinction.

In Extinct Madagascar, noted scientists Steven M. Goodman and William L. Jungers explore the recent past of these land animal extinctions. Beginning with an introduction to the geologic and ecological history of Madagascar that provides context for the evolution, diversification, and, in some cases, rapid decline of the Malagasy fauna, Goodman and Jungers then seek to recapture these extinct mammals in their environs. Aided in their quest by artist Velizar Simeonovski’s beautiful and haunting digital paintings—images of both individual species and ecosystem assemblages reproduced here in full color—Goodman and Jungers reconstruct the lives of these lost animals and trace their relationships to those still living.

Published in conjunction with an exhibition of Simeonovski’s artwork set to open at the Field Museum, Chicago, in the fall of 2014, Goodman and Jungers’s awe-inspiring book will serve not only as a sobering reminder of the very real threat of extinction, but also as a stunning tribute to Madagascar’s biodiversity and a catalyst for further research and conservation.

Editorial Reviews

Duke University - Anne Yoder
“The extinction (and its causes) of the many subfossil organisms described in Extinct Madagascar is one of biodiversity science’s great unsolved mysteries. Goodman and Jungers summarize and present a monumental amount of information pertaining to these species, combining storytelling (descriptive accounts of the scientists involved, of various events and adventures) and marvelous plates with exquisite details of the subfossils and associated metadata to illustrate both the landscape and the organisms of the Holocene epoch in Madagascar. Their literary approach as well as the data reviewed and assembled make for a wonderful addition to the literature. Extinct Madagascar will have broad appeal across disciplines and will be a priceless book for graduate seminar work. I can’t wait.”
author of "Masters of the Planet: The Search for Our Human Origins" - Ian Tattersall
“An authoritative and fascinating exploration of one of Nature's greatest evolutionary experiments.”
Oliver Sacks

"A hauntingly beautiful book."
University of Massachusetts Amherst - Laurie Godfrey
Extinct Madagascar is original; there is no other like it. It is data-rich, fabulously illustrated, and has just enough humor to make it fun to read as well as intellectually stimulating. It is not a review of the anatomy or taxonomy of the various taxa, yet it presents sufficient amounts of detail in this regard to make visualization possible. The book also provides a very nice synthesis of cultural, genetic, and paleontological evidence for human arrival—I think the best out there.”
Choice - E. Delson
"The modern fauna of Madagascar reflects the country’s long history of isolation from Africa (and Eurasia), despite its relatively close proximity. All its primates, for example, are in the broad ‘lemur’ category, found nowhere else today. Its mammalian fossil record is very short, almost all within the last 5,000 years. But the diversity is high, with seventeen species of extinct ‘lemur,’ including many far larger in size than their extant cousins. In this volume, zoologist Goodman and paleoanthropologist Jungers present these past denizens of Madagascar to a wide audience. . . . A superb book for all readers, including those for whom Madagascar is unknown. Highly recommended.”
Holocene - Malika Virah-Sawmy
“Large faunal species disappeared from Madagascar at a time when humans were certainly present on the island. A deduction, though not a parsimonious one, purported by many scholars is to attribute these extinctions to the hands of man, whether as a primary or contributory factor. . . . By contrast, in Extinct Madagascar, Steven M. Goodman and William L. Jungers explore in greater depth than the current literature presently offers the recent past of these animals through specific case studies presented by sites and by species. Each site is splendidly illustrated by the artist Velizar Simeonovski in arresting artworks, depicting how some of these animals may have lived or gone extinct based on available palaeontological evidence. These plates allow the reader a pictorial (though still speculative) glance of the past. . . . Extinct Madagascar provides superb information on a large number of palaeontological sites, contextualising the ecological uniqueness of each site. . . . The material presented should certainly provide more ‘meat’ to pursue research on the elusive nature of past extinction processes in Madagascar, especially if the past is to be used as a guide to conservation of biodiversity. This is more relevant than ever, with the huge challenge facing biodiversity in Madagascar today with continuing climate change and increasing human population impacts.”
Journal of Mammalogy - Karen E. Samonds
“Extinct Madagascar is an excellent and comprehensive work with a broad appeal across many disciplines. For those interested in Madagascar and rigorously testing hypotheses regarding paleoenvironment, community ecology, and extinction, this book is invaluable and represents a comprehensive synthesis of what is known about the island’s past environments, the role of humans in environmental change, and the mechanisms of extinction. This glimpse back in time constitutes an impressive tribute to Madagascar’s biodiversity as well as a reminder of the reality and threat of extinction. With a devastating extinction event occurring right before our eyes, the island’s future relies on whether or not we choose to act, and the actions taken will likely be more effective if they begin with an understanding of the environmental change that has already occurred.”
Quarterly Review of Biology - Patricia Chapple Wright
“Goodman and Jungers have carefully discussed each subfossil site and its community. . . . Extremely useful to both biologists and policy makers to have these two volumes [Extinct Madagascar and the Atlas of Selected Land Vertebrates of Madagascar] published and easily accessible. Not only are sighting, trapping, and paleontological sites labeled and mapped, but the type of forest and ecosystem is also clear. Current threats to the fauna are also outlined. Recent renaming of taxonomic groups based on molecular evidence is also clarified, making this information very useful to young scientists. The authors, well-known, seasoned scientists, are praised for excellent fieldwork and thorough scholarship in presenting these data of Malagasy fauna past and present.”
Conservation Biology - Clive Nuttman
“Another masterpiece from Steve Goodman, this time in partnership with Bill Jungers (who brings his palaeontology and eco-morphology expertise to the fore), that provides fascinating reconstructions of the fate of some of the extraordinary fauna of Madagascar. Throughout, the exquisite plates by Velizar Simeonovski, which combine superb artistic work with anatomical understanding, underpin the work. The book is extremely accessible for non-academic readers, who will gain a clear picture of the widespread changes to the Malagasy flora and fauna and how these changes occurred, and yet will satisfy the scientific community because it provides a comprehensive set of references that can be used as a guide to further in-depth research.”
Journal of Vertebrate Paleontology
Extinct Madagascar invites us to explore that world and to probe the circumstances surrounding its demise. Understanding Madagascar’s recent past is critically important because many of its remaining endemic vertebrates are highly endangered and could face a similar fate. The authors are two of the top scholars in this field, whose wealth of knowledge about extinct Madagascar is delightfully displayed in this book. . . . Anyone interested in Madagascar’s recent past must read Goodman and Jungers’s book.”
Biological Conservation - Petra De Block
“Goodman and Jungers’s book is a comprehensive work, bringing to a general audience an overview of ecological change and animal extinction on Madagascar in the Holocene. While not a technical summary, it cites close to four hundred scientific papers which can lead the interested reader further on his quest for information. Especially interesting is also the first part of the book, which gives a thorough general introduction to Madagascar starting with the breaking up of the supercontinent Gondwana some 165 million years ago. Several aspects are discussed: geography, geology, vegetation types, etc., all in an easy-to-read language and documented with well-chosen pictures. I highly recommend this authoritative and thoroughly enjoyable book!”

Product Details

ISBN-13:
9780226143972
Publisher:
University of Chicago Press
Publication date:
09/15/2014
Pages:
296
Product dimensions:
8.60(w) x 11.00(h) x 0.90(d)

Read an Excerpt

Extinct Madagascar

Picturing the Island's Past


By Steven M. Goodman, William L. Jungers

The University of Chicago Press

Copyright © 2014 The University of Chicago
All rights reserved.
ISBN: 978-0-226-15694-1



CHAPTER 1

Introduction


General

It is important to mention at the onset that this book is not intended to be a technical summary of what we know about ecological change and animal extinction on Madagascar in recent geological history. Instead, given our own fascination in trying to understand and perhaps partially answer the question as to what happened to an extraordinary assortment of endemic Malagasy animals that no longer roam the Earth, we decided to bring to a general audience an overview of these subjects. Our own particular research interests, which accent different aspects of these questions, are presented in the text. While enormous strides have been made in the past decades to understand different facets of "what happened," we still lack many of the critical details to properly weigh and put in balance factors induced by natural climate change versus those due to human modifications of the landscape. Critical for the latter "anthropogenic" aspect is the incomplete archaeological record of Madagascar, so that questions such as when humans originally arrived on the island remain controversial and uncertain. The complete story is like a puzzle, but several linking pieces are missing or insufficiently known to provide the complete window into what transpired. After the general opening sections in Part 1 to set the stage, Part 2 has twenty plates created by Velizar Simeonovski as centerpieces for reasonably well-known paleontological and archaeological localities. Discussing each individual plate, we unfold different pieces of the puzzle for a variety of sites and extinct species based on different sources of information. His plates, each of which acts as a separate "window into the past," bring our narratives to life.

As we learn more about the island of Madagascar, which covers nearly 600,000 square kilometers—the size of California with a good portion of Oregon—it becomes clear that a single, unequivocal response to the question of what happened is a fleeting possibility. No panacea exists for several reasons. Given the ecological, geological, topographical, meteorological, and cultural complexities and variation found across this massive landscape, multiple and different factors at the regional level have to be invoked to explain dramatic change during short periods of geological time, that is, on a scale of a few thousand years. As suggested by the late Robert Dewar some years back, if scientists working on Madagascar have come to understand one aspect, "it seems less and less appropriate to expect a single, uniform cause for the extinctions will be found" (83). Hence, in following this point, we suggest that an island-wide response as to what happened to the ecosystems and their constituent animals is inappropriate and implausible; there simply is no single "silver bullet." The different biological regions and cultural aspects in various cases need to be examined individually. Many debates remain to be resolved concerning what factors are responsible for these changes. Our intent with this book has been to summarize and provide a glimpse into decades of detailed scientific studies for a general audience in order to help them discover the extraordinary island of Madagascar and appreciate all of the recent changes that have taken place.


Aspects of Format

We have tried to write this book in a relatively nontechnical style. Words and expressions are occasionally used that might not be familiar to a general audience, but at first use and sometimes deeper into the text, we have tried to explain such terms. Further, while it is important to provide a certain number of bibliographic references for critical points and information presented in the text, particularly for documentary purposes and for those wanting additional details, we have done this in a light-handed fashion. Rather than congesting the text with such citations, we have used a number system, with complete reference information at the end of the book. Finally, we have included two indexes, one to the scientific names and another of Malagasy locality names used in the text.

We differentiate between two different types of illustrations used in this book. The term "plate" specifically refers to paintings by Velizar Simeonovski that are presented in Part 2; these twenty plates capture the different site-specific ecosystems and animals that occurred or still occur on the island. On the inside front cover is a map of the different localities for the twenty plates, providing the reader a key to their geographical position. In the text associated with these plates, different themes are discussed and considerable cross-references are made between them. In several cases, a small black-and- white figure and associated text are presented adjacent to a plate to provide a key to the identification of the animals depicted. The term "figure" refers to all of the other illustrations presented in this book. Associated with their often-complex names and considerable number of syllables, Malagasy locality names can be difficult for the non- initiated. In Figure 1, we present the placement for most localities mentioned in the text and distinguish between paleontological and archaeological sites.

Major advances have been made in the past few decades in our understanding of extinct and living animals of Madagascar. New insights are now available on their distribution, ecology, and classification (taxonomy). Given these diverse studies, various scientists maintain differing interpretations of certain types of data and, naturally, opinions vary. Hence, the systematics or classifications for different organisms presented in this book are in some cases in a state of flux. As a case in point, the giant extinct tortoises of Madagascar were classically placed in the genus Geochelone, with two recognized species: Geochelone abrupta and Geochelone grandidieri. Subsequently, it was proposed that these species should be placed in the genus Dipsochelys, and this in turn created more debate. Accordingly, a petition supported by numerous scientists working on reptiles has been sent to the International Commission on Zoological Nomenclature in an effort to stabilize the taxonomy of these animals; in this case, for certain living and extinct giant tortoises, the generic name would be Aldabrachelys. Herein, we use this genus for the two extinct species of Madagascar, Aldabrachelys abrupta and Aldabrachelys grandidieri, as well as the extant Aldabra tortoise, Aldabrachelys gigantea. We have used the abbreviation "sp." for species and "spp." in its plural form.


The Artist

Velizar Simeonovski is a native of Bulgaria. In 1987 he graduated from the Professional Art School of Applied Arts in Sofia, and in 1995 he received his MS in vertebrate zoology from the Sofia University (his thesis was on aspects of wild and feral cats). His current research interests are in the evolution of external mammal traits, such as spots, stripes, and different types of pelage patterns, including aspects of variation and development. Using his considerable knowledge of animal anatomy and careful observation of wild and captive animals, he has an extraordinary capacity to reconstruct and figure extinct animals. Starting with bony characters, he is able to layer on muscles and add skin and other ornamentation (Figure 2). His ability to bring his subjects to life distinguishes him from many other artists working in this domain.

In late 2002, Velizar was in contact with Tom Gnoske at the Field Museum in regard to Tom's recent discoveries on lion ecology. They formed an important bond over their common interests in Carnivora, and the following year Tom was able to organize Velizar's visit to Chicago so they could work on some joint projects. Subsequently, the word got around to scientific and exhibition members at the museum about Velizar's extraordinary talents, and he was engaged to illustrate a number of different scientific works, field guides, and general public exhibits. His work has now been incorporated into permanent museum exhibitions, as well as temporary shows around the world.

While his original training was in traditional art forms and techniques, which he used during the earlier portions of his career, he has also embraced rapidly changing digital technologies. In fact, all of the plates presented in this book are "computer art," that is, drafted and drawn on a computer. Given Velizar's profound curiosity of how the animal world functions, combined with his training in biology and unparalleled talents to create flesh from bone, his current work has helped to create a new genre of art.


Geological Time, Dates, and Radiocarbon Dating


In this book, we focus on a very recent period of geological time, specifically the Holocene Epoch, which commenced slightly less than 12,000 years BP (see Figure 3). Most of the bone and pollen deposits discussed in this book are from the Holocene, although some are slightly older and date from the Late Pleistocene, about 40,000 years BP. These two epochs, Holocene and Pleistocene, form the period known as the Quaternary. Given that the Earth is over 4.5 billion years old, the period we are discussing is less than 0.0009 percent of its history! For a little more perspective, members of the genus Homo, to which we belong, evolved near the beginning of the Pleistocene approximately 2.3 million years ago in Africa, another blink of the eye in terms of deep geological time.

Scientists use several different time scales to gauge the date or period of past events. As most of the dating we employ in this book is based on radiocarbon analysis (see below), we employ the time scale known as "years before present," which is abbreviated throughout the book as "years BP." (The term "years BP" is equivalent to calendar years before present, or cal yr BP.) As the testing of nuclear weapons in the 1950s greatly changed the proportion of carbon isotopes in the atmosphere, the date of 1 January 1950, at the start of these activities, is used as the cutoff year of this system. Hence, using our modern calendar, a date of 150 years BP in the year 2014 is 150 + 64 (i.e., 2014 - 1950) = 214 years ago.

The advent of radiocarbon techniques in the 1950s provided an important development for dating organic materials recovered from archaeological and recent paleontological sites. Carbon is found in nature in different isotope forms, with the dominant one being carbon-14 (14C). Physicists have been able to calculate with a high level of precision the rate that 14C degrades into its different isotopic forms. During the process of photosynthesis, when plants assimilate and fix carbon dioxide into their organic tissues, they incorporate 14C at levels largely equivalent to those found in the atmosphere. As the system of photosynthesis is fundamental to most food chains, whether it involves a herbivorous animal such as a beetle or a gazelle that eats plants, carnivorous birds that consume beetles, or leopards that feed on gazelles, all have measurable levels of 14C in their tissues. Thus, in turn, based on the degradation of this isotope starting with the death of the plant or animal in question, the period it was living can be estimated with considerable precision. This technique—whether for wood, charcoal, or bone found at an archaeological site or a recent paleontological site—works for a variety of organisms that were alive within the past 60,000 years. Because of the manner in which 14C degrades, other dating techniques need to be employed for older plant and animal material.

The vast majority of dates reported in this book are from bone samples. In such cases, these dates are derived mostly from carbon isolated from the collagen portion of the bone, which includes both organic and inorganic portions. A critical step in this process is the separation of contaminated carbon, which is currently done in most labs with a special pre-treatment processing of the bone. Further, other artifacts can modify the accuracy of radiocarbon dates from chemical change or contamination, either natural or artificial. In any case, there are non-trivial technical hurdles in producing reliable dates, and not all published ones are necessarily accurate. Hence, this highlights the importance of having multiple dates from a given strata or horizon of a site that fall within the same immediate range. In cases when these are not available, other corroborative information needs to be marshaled. Further, the techniques used for radiocarbon dating pose other complications, such as how certain organisms stock or assimilate older 14C. Different calculations have been proposed to get around these problems, and they provide corrected estimates centered on calibrated maximum and minimum values for a given radiocarbon date. Herein we also use the mean of these values, often cited in the text as "mean calibrated date," which follows in parentheses the radiocarbon date in years BP. For example, the maximum and minimum 14C calibration dates for a lemur bone from a site yielded the dates of 2,360–3,450, with the mean of these values being 2,905, giving us the mean calibrated date. In virtually all cases, these different calibrated values are derived from the work of David Burney and colleagues or Brooke Crowley (54, 69).

Among plants, different systems exist when they convert light energy from the sun into chemical energy (photosynthesis) that is used to meet the plant's nutritional needs. Photosynthesis is at the origin of all organic carbon within the tissues of a plant, invertebrates that eat plants, vertebrates that consume the invertebrates, and carnivores that feed on the vertebrates. In this regard, different aspects of the diet of an organism can be followed based on the types of carbon within them. There are three types of photosynthesis, and these three processes give rise to different carbon cycling. Without going into too much detail, plants that trap carbon dioxide based on a three-carbon compound are C3 plants, and those that use a four-carbon compound are C,4or CAM plants; the C4 or CAM types of photosynthesis are differentiated during the period (night or day) in which they fix carbon dioxide. Now an extraordinary aspect is that based on carbon isotope values from radiocarbon-dated organic material, inferences can be made as to the type of photosynthetic cycle that a given plant underwent, or for animal-eating organisms the types of plants entering into the food chain that formed the basis of their diet. In Part 2 of this book, on several occasions we discuss this type of information to provide insight into different life-history traits of extinct animals.


What Is a Subfossil?

When most people think of a fossil, they envision some form of rock that holds traces of a formerly living organism, such as shell, bone, wood, coprolites, tracks, and so on. A number of different processes led to the creation of fossils, but one of the more common is the deposition of an organism or portions of it underwater and out of direct contact with the air; this anaerobic situation notably reduces the speed of tissue decomposition. Under certain conditions, remains can be rapidly buried in sediments, forming a mold. In such cases, the process of mineralization can commence, in which water heavily charged with precipitates, such as silica or calcite, come out of solution, fill the mold cavity, and form a rock replicate of the organism that made up the cast.

Now subfossils, as we refer to them herein, are the physical remains of animals (bone) or plants (wood, seeds, and pollen) but without any significant degree of mineralization. In some cases, subfossil remains look like they just came out of the stew pot, in largely perfect shape and only slightly discolored, while in other cases they are fragmented and notably decomposed. The remains of animals recovered in caves can be covered and/or infiltrated with calcite from active formations, although minerals have not replaced the bone itself (Figure 4). One of the very useful assets of subfossils is that they are essentially unmodified remains of the former living organism and can yield DNA for molecular genetic studies, carbon for radiocarbon dating, or different types of stable isotopes to examine dietary preferences of the organism; the latter two aspects are discussed above. Regrettably, in some cases, the manner in which the material was deposited, or perhaps something chemical in the surrounding soils, can degrade the valuable organic molecules.


(Continues...)

Excerpted from Extinct Madagascar by Steven M. Goodman, William L. Jungers. Copyright © 2014 The University of Chicago. Excerpted by permission of The University of Chicago Press.
All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.
Excerpts are provided by Dial-A-Book Inc. solely for the personal use of visitors to this web site.

Meet the Author

Steven M. Goodman is the MacArthur Field Biologist at the Field Museum, Chicago, and based in Antananarivo, Madagascar. He is coeditor of The Natural History of Madagascar and Atlas of Selected Land Vertebrates of Madagascar, the former published and the latter distributed by the University of Chicago Press. William L. Jungers is distinguished teaching professor and chair of anatomical sciences at Stony Brook University School of Medicine. Velizar Simeonovski is an artist based in Chicago who specializes in reconstructions of extinct species and prehistoric landscapes. He often works with Field Museum scientists.

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