scholarly journals A Natural Colonisation of Asia: Phylogenomic and Biogeographic History of Coin Spiders (Araneae: Nephilidae: Herennia)

Diversity ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 515
Author(s):  
Eva Turk ◽  
Jason E. Bond ◽  
Ren-Chung Cheng ◽  
Klemen Čandek ◽  
Chris A. Hamilton ◽  
...  
Keyword(s):  
The Philippines ◽  
Geological Time ◽  
Tropical Asia ◽  
Se Asia ◽  
Biogeographic History ◽  
Phylogenetic Data ◽  
Geological Past ◽  
Temporal Intervals ◽  
Anchored Hybrid Enrichment ◽  
History Of

Reconstructing biogeographic history is challenging when dispersal biology of studied species is poorly understood, and they have undergone a complex geological past. Here, we reconstruct the origin and subsequent dispersal of coin spiders (Nephilidae: Herennia Thorell), a clade of 14 species inhabiting tropical Asia and Australasia. Specifically, we test whether the all-Asian range of Herennia multipuncta is natural vs. anthropogenic. We combine Anchored Hybrid Enrichment phylogenomic and classical marker phylogenetic data to infer species and population phylogenies. Our biogeographical analyses follow two alternative dispersal models: ballooning vs. walking. Following these assumptions and considering measured distances between geographical areas through temporal intervals, these models infer ancestral areas based on varying dispersal probabilities through geological time. We recover a wide ancestral range of Herennia including Australia, mainland SE Asia and the Philippines. Both models agree that H. multipuncta internal splits are generally too old to be influenced by humans, thereby implying its natural colonisation of Asia, but suggest quite different colonisation routes of H. multipuncta populations. The results of the ballooning model are more parsimonious as they invoke fewer chance dispersals over large distances. We speculate that coin spiders’ ancestor may have lost the ability to balloon, but that H. multipuncta regained it, thereby colonising and maintaining larger areas.

Regeneration methods for dipterocarp forests of wet tropical Asia

2003 ◽  
Vol 79 (2) ◽  
pp. 263-267 ◽  
Author(s):  
Mark S Ashton
Keyword(s):  
Land Use Planning ◽  
Forest Type ◽  
Forest Products ◽  
The Philippines ◽  
Tropical Asia ◽  
Ecological Principles ◽  
Dipterocarp Forests ◽  
Non Timber Forest Products ◽  
History Of ◽  
Wet Tropics

Dipterocarp forests of the Asian wet tropics have a long history of silvicultural research. This paper provides a review of this history and a summary of the ecological principles guiding the regeneration methods used. Dipterocarp forests are here defined as those of the seasonally wet regions of Thailand, Burma, and India, and those that are considered of the mixed dipterocarp forest type that dominate the aseasonal wet regions of Sri Lanka, Malaysia, and parts of Indonesia and the Philippines. Two silvicultural regeneration methods are described, shelterwoods and their variants, and selection systems. Both systems can be justified but emphasis is given to the development of shelterwood and selection regeneration methods that are tailored to the particular biological and social context at hand. The paper concludes with a call for improved land-use planning and stand typing to better integrate service and protection values with those values focused on commodity production. Key words: Dipterocarpus, hill forest, non-timber forest products, polycyclic, regeneration, selection, shelterwood, Shorea

In search of possible causes of mass extinctions

2004 ◽  
Author(s):  
Tony Hallam
Keyword(s):  
Science Fiction ◽  
High Rate ◽  
Mass Extinctions ◽  
Geological Time ◽  
Steven Spielberg ◽  
Geological Past ◽  
History Of ◽  
The Subject ◽  
Cretaceous Period ◽  
Land Vertebrates

When the subject of extinctions in the geological past comes up, nearly everyone’s thoughts turn to dinosaurs. It may well be true that these long-extinct beasts mean more to most children than the vast majority of living creatures. One could even go so far as to paraphrase Voltaire and maintain that if dinosaurs had never existed it would have been necessary to invent them, if only as a metaphor for obsolescence. To refer to a particular machine as a dinosaur would certainly do nothing for its market value. The irony is that the metaphor is now itself obsolete. The modern scientific view of dinosaurs differs immensely from the old one of lumbering, inefficient creatures tottering to their final decline. Their success as dominant land vertebrates through 165 million years of the Earth’s history is, indeed, now mainly regarded with wonder and even admiration. If, as is generally thought, the dinosaurs were killed off by an asteroid at the end of the Cretaceous, that is something for which no organism could possibly have been prepared by normal Darwinian natural selection. The final demise of the dinosaurs would then have been the result, not of bad genes, but of bad luck, to use the laconic words of Dave Raup. In contemplating the history of the dinosaurs it is necessary to rectify one widespread misconception. Outside scientific circles the view is widely held that the dinosaurs lived for a huge slice of geological time little disturbed by their environment until the final apocalypse. This is a serious misconception. The dinosaurs suffered quite a high evolutionary turnover rate, and this implies a high rate of extinction throughout their history. Jurassic dinosaurs, dominated by giant sauropods, stegosaurs, and the top carnivore Allosaurus, are quite different from those of the Cretaceous period, which are characterized by diverse hadrosaurs, ceratopsians, and Tyrannosaurus. Michael Crichton’s science-fiction novel Jurassic Park, made famous by the Steven Spielberg movies, features dinosaurs that are mainly from the Cretaceous, probably because velociraptors and Tyrannosaurus could provide more drama.

Eritreo-Arabian Affinities of the Socotran Flora as Revealed from the Molecular Phylogeny of Aerva (Amaranthaceae)

2006 ◽  
Vol 31 (3) ◽  
pp. 560-570 ◽  
Author(s):  
Mike Thiv ◽  
Mats Thulin ◽  
Norbert Kilian ◽  
H. Peter Linder
Keyword(s):  
Indian Ocean ◽  
Sequence Data ◽  
Plastid Dna ◽  
Molecular Dating ◽  
Tropical Asia ◽  
Biogeographic Patterns ◽  
Dna Sequence Data ◽  
Biogeographic History ◽  
History Of ◽  
Taxonomic Groups

We investigated the colonization of the Indian Ocean archipelago of Socotra through phylogenetic analysis of Aerva (Amaranthaceae) based on nuclear and plastid DNA sequence data. The biogeographic history of the genus was tracked using ancestral area reconstructions and molecular dating. Three independent colonization lineages from the Eritreo-Arabian subregion of the Sudano-Zambesian Region were revealed: one endemic clade comprising Aerva revoluta / A. microphylla and once within A. lanata and A. javanica. Our results provide further support for the dominance of Eritreo-Arabian affinities in the flora of Socotra, in contrast to more rare affinities to Madagascar, the Mascarenes, southern Africa, and tropical Asia. Our data point towards colonization via dispersal, rather than a vicariance origin of the island elements. The overall biogeographic patterns of Aerva show only limited concordance with other taxonomic groups distributed on Indian Ocean islands.

Courting Migrants

2020 ◽  
Author(s):  
Katrina Burgess
Keyword(s):  
Dominican Republic ◽  
Regime Change ◽  
The Philippines ◽  
Feedback Loops ◽  
The State ◽  
Historical Case ◽  
Qualitative Comparison ◽  
Integrative Theory ◽  
History Of ◽  
History Of Migration

This book examines state–migrant relations in four countries with a long history of migration, regime change, and democratic fragility: Turkey, the Dominican Republic, Mexico, and the Philippines. It uses these cases to develop an integrative theory of the interaction between “diaspora-making” by states and “state-making” by diasporas. Specifically, it tackles three questions: (1) Under what conditions and in what ways do states alter the boundaries of political membership to reach out to migrants and thereby “make” diasporas? (2) How do these migrants respond? (3) To what extent does their response, in turn, transform the state? Through historical case narratives and qualitative comparison, the book traces the feedback loops among migrant profiles, state strategies of diaspora-making, party transnationalization, and channels of migrant engagement in politics back home. The analysis reveals that most migrants follow the pathways established by the state and thereby act as “loyal” diasporas but with important deviations that push states to alter rules and institutions.

scholarly journals Amazonia as the Origin and Diversification Area of Didelphidae (Mammalia: Metatheria), and a Review of the Fossil Record of the Clade

2021 ◽  
Author(s):  
Mariela C. Castro ◽  
Murilo J. Dahur ◽  
Gabriel S. Ferreira
Keyword(s):  
South America ◽  
Amazon Basin ◽  
Parametric Models ◽  
Isthmus Of Panama ◽  
Biogeographic History ◽  
Early Diversification ◽  
Northern Portion ◽  
History Of ◽  
Environmental Events ◽  
Fossil Records

AbstractDidelphidae is the largest New World radiation of marsupials, and is mostly represented by arboreal, small- to medium-sized taxa that inhabit tropical and/or subtropical forests. The group originated and remained isolated in South America for millions of years, until the formation of the Isthmus of Panama. In this study, we present the first reconstruction of the biogeographic history of Didelphidae including all major clades, based on parametric models and stratified analyses over time. We also compiled all the pre-Quaternary fossil records of the group, and contrasted these data to our biogeographic inferences, as well as to major environmental events that occurred in the South American Cenozoic. Our results indicate the relevance of Amazonia in the early diversification of Didelphidae, including the divergence of the major clades traditionally ranked as subfamilies and tribes. Cladogeneses in other areas started in the late Miocene, an interval of intense shifts, especially in the northern portion of Andes and Amazon Basin. Occupation of other areas continued through the Pliocene, but few were only colonized in Quaternary times. The comparison between the biogeographic inference and the fossil records highlights some further steps towards better understanding the spatiotemporal evolution of the clade. Finally, our results stress that the early history of didelphids is obscured by the lack of Paleogene fossils, which are still to be unearthed from low-latitude deposits of South America.

Evolution and biogeographic history of the Saguinus mystax group (Primates, Callithrichidae)

2021 ◽  
Vol 83 (2) ◽  
Author(s):  
Daysa Athaydes ◽  
Cayo A. R. Dias ◽  
Renato Gregorin ◽  
Fernando A. Perini
Keyword(s):  
Saguinus Mystax ◽  
Biogeographic History ◽  
History Of

Implications for the age of South African Devonian rocks in which Tropidoleptus (Brachiopoda) has been found

1983 ◽  
Vol 120 (1) ◽  
pp. 51-58 ◽  
Author(s):  
A. J. Boucot ◽  
C. H. C. Brunton ◽  
J. N. Theron
Keyword(s):  
South Africa ◽  
North America ◽  
South African ◽  
Early Carboniferous ◽  
Fossil Plants ◽  
Geological Time ◽  
Marine Sedimentation ◽  
History Of ◽  
Near Shore ◽  
First Time

SummaryThe Devonian brachiopod Tropidoleptus is recognized for the first time in South Africa. It is present in the lower part of the Witteberg Group at four widely separated localities. Data regarding the stratigraphical range of the genus elsewhere, combined with information on recently described fossil plants and vertebrates from underlying strata of the upper Bokkeveld Group, suggest that a Frasnian or even Givetian age is reasonable for the lower part of the Witteberg Group. The recognition of Tropidoleptus in a shallow water, near-shore, molluscan association, at the top of the South African marine Devonian sequence, is similar to its occurrence in Bolivia, and suggests a common Malvinokaffric Realm history of shallowing, prior to later Devonian or early Carboniferous non-marine sedimentation. It is noteworthy that Tropidoleptus is now known to occur in ecologically suitable environments around the Atlantic, but is absent from these same environments in Asia and Australia. Tropidoleptus is an excellent example of dispersal in geological time — first appearing in northern Europe and Nova Scotia, then elsewhere in eastern North America and North Africa, followed by South America and South Africa, while continuing in North America.

Mitochondrial introgression and complex biogeographic history of the genus Picea

2015 ◽  
Vol 93 ◽  
pp. 63-76 ◽  
Author(s):  
Jin-Hua Ran ◽  
Ting-Ting Shen ◽  
Wen-Juan Liu ◽  
Pei-Pei Wang ◽  
Xiao-Quan Wang
Keyword(s):  
Biogeographic History ◽  
Mitochondrial Introgression ◽  
History Of

scholarly journals Book Reviews

2004 ◽  
Vol 160 (2) ◽  
pp. 363-415
Author(s):  
Redactie KITLV
Keyword(s):  
New York ◽  
British Museum ◽  
The Philippines ◽  
Southeast Asian ◽  
Asia Pacific ◽  
Columbia University ◽  
Asian Studies ◽  
Southeast Asian Studies ◽  
History Of ◽  
University Of Hawai'i

-Timothy P. Barnard, Cynthia Chou, Indonesian sea nomads; Money, magic, and fear of the Orang Suku Laut. London: RoutledgeCurzon, 2003, xii + 159 pp. -R.H. Barnes, Toos van Dijk, Gouden eiland in de Bandazee; Socio-kosmische ideeën op Marsela, Maluku Tenggara, Indonesië. Leiden: Onderzoekschool voor Aziatische, Afrikaanse en Amerindische studies (CNWS), Universiteit Leiden, 2000, 458 pp. [CNWS Publications 94.] -Andrew Beatty, Peter G. Riddell, Islam and the Malay-Indonesian world; Transmission and responses. Honolulu: University of Hawai'i Press, 2001, xvii + 349 pp. -Peter Boomgaard, Richard H. Grove ,El Niño - history and crisis; Studies from the Asia-Pacific region. Cambridge: White Horse Press, 2000, 230 pp., John Chappell (eds) -Bernardita Reyes Churchill, Florentino Rodao, Franco y el imperio japonés; Imágenes y propaganda en tiempos de guerra. Barcelona: Plaza and Janés, 2002, 669 pp. -Matthew Cohen, Stuart Robson, The Kraton; Selected essays on Javanese courts. Translated by Rosemary Robson-McKillop. Leiden: KITLV Press, 2003, xxvi + 397 pp. [Translation series 28.] -Serge Dunis, Ben Finney, Sailing in the wake of the ancestors; Reviving Polynesian voyaging. Honolulu: Bishop Museum Press, 2003, 176 pp. [Legacy of excellence.] -Heleen Gall, Jan A. Somers, De VOC als volkenrechtelijke actor. Deventer: Gouda Quint, Rotterdam: Sanders Instituut, 2001, x + 350 pp. -David Henley, Harold Brookfield, Exploring agrodiversity. New York: Columbia University Press, 2001, xix + 348 pp. -David Hicks, Ernst van Veen ,A guide to the sources of the history of Dutch-Portuguese relations in Asia (1594-1797). With a foreword by Leonard Blussé. Leiden: Institute for the history of European expansion, 2001, iv + 378 pp. [Intercontinenta 24.], Daniël Klijn (eds) -Nico Kaptein, Donald J. Porter, Managing politics and Islam in Indonesia. London: RoutledgeCurzon, 2002, xxi + 264 pp. -Victor T. King, Monica Janowski, The forest, source of life; The Kelabit of Sarawak. London: British Museum Press, 2003, vi + 154 pp. [Occasional paper 143.] -Dick van der Meij, Andrée Jaunay, Exploration dans la presqu île malaise par Jacques de Morgan 1884. Paris: CNRS Éditions, 2003, xiv + 268 pp. Avec les contributions de Christine Lorre, Antonio Guerreiro et Antoine Verney. -Toon van Meijl, Richard Eves, The magical body; Power, fame and meaning in a Melanesian society. Amsterdam: Harwood academic, 1998, xxii + 302 pp. [Studies in Anthropology and History 23.] -Otto van den Muijzenberg, Florentino Rodao ,The Philippine revolution of 1896; Ordinary lives in extraordinary times. Quezon city: Ateneo de Manila University Press, 2001, xx + 303 pp., Felice Noelle Rodriguez (eds) -Frank Okker, Kees Snoek, Manhafte heren en rijke erfdochters; Het voorgeslacht van E. du Perron op Java. Leiden: KITLV Uitgeverij, 2003, 103 pp. [Boekerij 'Oost en West'.] (met medewerking van Tim Timmers) -Oona Thommes Paredes, Greg Bankoff, Cultures of disaster; Society and natural hazard in the Philippines, 2003, xviii + 232 pp. London: RoutledgeCurzon, 2003, xviii + 232 pp. -Angela Pashia, Lake' Baling, The old Kayan religion and the Bungan religious reform. Translated and annotated by Jérôme Rousseau. Kota Samarahan: Unit Penerbitan Universiti Malaysia Sarawak, 2002, xviii + 124 pp. [Dayak studies monographs, Oral literature series 4.] -Anton Ploeg, Susan Meiselas, Encounters with the Dani; Stories from the Baliem Valley. New York: International center of photography, Göttingen: Steidl, 2003, 196 pp. -Nathan Porath, Robert W. Hefner, The politics of multiculturalism; Pluralism and citizenship in Malaysia, Singapore, and Indonesia. Honolulu: University of Hawai'i Press, 2001, ix + 319 pp. -Jan van der Putten, Timothy P. Barnard, Multiple centres of authority; Society and environment in Siak and eastern Sumatra, 1674-1827. Leiden: KITLV Press, 2003, xvi + 206 pp. [Verhandelingen 210.] -Jan Piet Puype, David van Duuren, Krisses; A critical bibliography. Wijk en Aalburg: Pictures Publishers, 2002, 192 pp. -Thomas H. Slone, Gertrudis A.M. Offenberg ,Amoko - in the beginning; Myths and legends of the Asmat and Mimika Papuans. Adelaide: Crawford House, 2002, xxviii + 276 pp., Jan Pouwer (eds) -Fridus Steijlen, Kwa Chong Guan ,Oral history in Southeast Asia; Theory and method. Singapore: Institute of Southeast Asian studies, 2000, xii + 172 pp., James H. Morrison, Patricia Lim Pui Huen (eds) -Fridus Steijlen, P. Lim Pui Huen ,War and memory in Malaysia and Singapore. Singapore: Institute of Southeast Asian studies, 2000, vii + 193 pp., Diana Wong (eds) -Jaap Timmer, Andrew Lattas, Cultures of secrecy; Reinventing race in Bush Kaliai cargo cults. Madison/London: University of Wisconsin Press, 1998, xliv + 360 pp. -Edwin Wieringa, Kartika Setyawati ,Katalog naskah Merapi-Merbabu; Perpustakaan Nasional Republik Indonesia. Yogyakarta: Penerbitan Universitas Sanata Dharma, Leiden: Opleiding Talen en Culturen van Zuidoost-Azië en Oceanië, 2002, ix + 278 pp. [Semaian 23.], I. Kuntara Wiryamartana, Willem van der Molen (eds) -Julian Millie, Jakob Sumardjo, Simbol-simbol artefak budaya Sunda; Tafsir-tafsir pantun Sunda. Bandung: Kelir, 2003, xxvi + 364 pp. -Julian Millie, T. Christomy, Wawacan Sama'un; Edisi teks dan analisis struktur Jakarta: Djambatan (in cooperation with the Ford Foundation), 2003, viii + 404 pp. -Julian Millie, Dadan Wildan, Sunan Gunung Jati (antara fiksi dan fakta); Pembumian Islam dengan pendekatan struktural dan kultural. Bandung: Humaniora Utama Press, 2002, xx + 372 pp.

Caring for the Internet: Content Moderators and the Maintenance of Empire

2019 ◽  
Vol 4 (1) ◽  
pp. 66-78
Author(s):  
Lindsay Bartkowski
Keyword(s):  
Labor Relations ◽  
Well Being ◽  
The Philippines ◽  
Third Party ◽  
Emotional Impact ◽  
Affective Labor ◽  
Violent Content ◽  
Imperial Power ◽  
History Of ◽  
The Relationship

Scholarly and journalistic investigations of content moderation have thoroughly documented its emotional impact on workers, but have yet to analyze moderation as care labor. Out of sight from U.S. and European consumers, content moderators are hired by third-party outsourcing firms primarily in the Philippines or India to remove offensive or violent content from internet platforms in order to preserve their profitability and users’ emotional well-being. Situating content moderation in the long history of domestic labor relations in the U.S., which were designed to support the expansion of imperial power, this essay proposes new ways of understanding the relationship between affective labor and the procedures of empire.

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