Formal Epistemology in a Tropical Savanna

2020 ◽  
pp. 331-348
Author(s):  
Sahotra Sarkar
Keyword(s):  
Formal Epistemology ◽  
Tropical Savanna

Oxford Studies in Epistemology Volume 6

2019 ◽  
Keyword(s):  
Decision Theory ◽  
A Priori ◽  
Formal Epistemology ◽  
Ethics Of Belief ◽  
Naturalized Epistemology ◽  
New Developments ◽  
The Status ◽  
Important Field ◽  
Belief Justification

Oxford Studies in Epistemology is a biennial publication offering a regular snapshot of state-of-the-art work in this important field. Under the guidance of a distinguished editorial board composed of leading epistemologists in North America, Europe and Australasia, it publishes exemplary papers in epistemology, broadly construed. Topics within its purview include: (a) traditional epistemological questions concerning the nature of belief, justification, and knowledge, the status of skepticism, the nature of the a priori, etc.; (b) new developments in epistemology, including movements such as naturalized epistemology, feminist epistemology, social epistemology, and virtue epistemology, and approaches such as contextualism; (c) foundational questions in decision-theory; (d) confirmation theory and other branches of philosophy of science that bear on traditional issues in epistemology; (e) topics in the philosophy of perception relevant to epistemology; (f) topics in cognitive science, computer science, developmental, cognitive, and social psychology that bear directly on traditional epistemological questions; and (g) work that examines connections between epistemology and other branches of philosophy, including work on testimony, the ethics of belief, etc. Topics addressed in volume 6 include the nature of perceptual justification, intentionality, modal knowledge, credences, epistemic supererogation, epistemic and rational norms, expressivism, skepticism, and pragmatic encroachment. The various writers make use of a variety of different tools and insights, including those of formal epistemology and decision theory, as well as traditional philosophical analysis and argumentation.

Late-Holocene palaeoenvironmental reconstruction from a lake in the Amazon Rainforest-Tropical Savanna (Cerrado) boundary in Brazil using a multi-proxy approach

The Holocene ◽  
2021 ◽  
pp. 095968362110190
Author(s):  
Kury Milena Souza ◽  
Moreira Luciane Silva ◽  
Cordeiro Renato Campello ◽  
Sifeddine Abdelfettah ◽  
Turcq Bruno ◽  
...  
Keyword(s):  
Late Holocene ◽  
Amazon Region ◽  
Amazon Rainforest ◽  
Oxbow Lake ◽  
Tropical Savanna ◽  
Sedimentary Process ◽  
Climatic Fluctuations ◽  
Climate Conditions ◽  
Depositional Processes ◽  
Lake Formation

As an ecotone, the region between the Amazon Rainforest and Tropical Savanna (Cerrado) biomes is, by definition, more susceptible to climate change. Therefore, understanding palaeoenvironmental dynamics is essential to address the future responses of such transition areas to climatic fluctuations. In this context, we present a new sediment record for the Late-Holocene retrieved from Barro-Preto, currently an oxbow lake located in an ecotone at the southern Brazilian Amazon border. Our multi-proxy data include carbon and nitrogen isotopes, as well as bulk TOC, chlorophyll derivatives, grain-size and microcharcoal analyses, all anchored on a radiocarbon-dated chronology. The sedimentary process recorded at the Barro-Preto Lake responded to both local and regional climate dynamics. It was influenced by river excursions associated to local responses to precipitation changes by the activation of the palaeochannel connecting the main-stem river and the Barro-Preto lake. This activation was evidenced by the presence of different colour lithology laminations accompanied by coarser sediments and also by climate conditions known to influence the Amazon region. Depositional processes linked to lake dynamics and different oxbow lake cycle stages were also important to explain the changes verified in the Barro-Preto record, endorsing the use of this lake formation for palaeoclimatic reconstructions. The record indicated a rising humidity trend, reflected by a progressive increase in lacustrine productivity, in accordance to other studies carried out in the Amazon region concerning the Late-Holocene, associated with a more southward displacement of the Intertropical Convergence Zone. Despite this rising humidity trend, dry episodic events during the Late-Holocene were evidenced by charcoal data, also coherent with regional Amazon studies, albeit exhibiting increased intensity, suggesting that the transitional nature of the environment might have influenced susceptibility to fires.

scholarly journals A late-Holocene multiproxy fire record from a tropical savanna, eastern Arnhem Land, Northern Territory, Australia

The Holocene ◽  
2021 ◽  
pp. 095968362098803
Author(s):  
Emma Rehn ◽  
Cassandra Rowe ◽  
Sean Ulm ◽  
Craig Woodward ◽  
Michael Bird
Keyword(s):  
Isotope Composition ◽  
Fire Regimes ◽  
Northern Territory ◽  
Ecosystem Dynamics ◽  
Optical Methods ◽  
Fire Intensity ◽  
Tropical Savanna ◽  
Anthropogenic Fire ◽  
Pyrogenic Carbon ◽  
Arnhem Land

Fire has a long history in Australia and is a key driver of vegetation dynamics in the tropical savanna ecosystems that cover one quarter of the country. Fire reconstructions are required to understand ecosystem dynamics over the long term but these data are lacking for the extensive savannas of northern Australia. This paper presents a multiproxy palaeofire record for Marura sinkhole in eastern Arnhem Land, Northern Territory, Australia. The record is constructed by combining optical methods (counts and morphology of macroscopic and microscopic charcoal particles) and chemical methods (quantification of abundance and stable isotope composition of pyrogenic carbon by hydrogen pyrolysis). This novel combination of measurements enables the generation of a record of relative fire intensity to investigate the interplay between natural and anthropogenic influences. The Marura palaeofire record comprises three main phases: 4600–2800 cal BP, 2800–900 cal BP and 900 cal BP to present. Highest fire incidence occurs at ~4600–4000 cal BP, coinciding with regional records of high effective precipitation, and all fire proxies decline from that time to the present. 2800–900 cal BP is characterised by variable fire intensities and aligns with archaeological evidence of occupation at nearby Blue Mud Bay. All fire proxies decline significantly after 900 cal BP. The combination of charcoal and pyrogenic carbon measures is a promising proxy for relative fire intensity in sedimentary records and a useful tool for investigating potential anthropogenic fire regimes.

Dry season water use patterns underGuiera senegalensisL. shrubs in a tropical savanna

1998 ◽  
Vol 40 (1) ◽  
pp. 53-67 ◽  
Author(s):  
Stephen R Gaze ◽  
Joost Brouwer ◽  
Lester P Simmonds ◽  
John Bromley
Keyword(s):  
Water Use ◽  
Dry Season ◽  
Tropical Savanna ◽  
Use Patterns ◽  
Water Use Patterns

Mapping riparian condition indicators in a sub-tropical savanna environment from discrete return LiDAR data using object-based image analysis

2010 ◽  
Vol 10 (4) ◽  
pp. 796-807 ◽  
Author(s):  
Kasper Johansen ◽  
Lara A. Arroyo ◽  
John Armston ◽  
Stuart Phinn ◽  
Christian Witte
Keyword(s):  
Image Analysis ◽  
Lidar Data ◽  
Tropical Savanna ◽  
Object Based Image Analysis ◽  
Condition Indicators ◽  
Object Based

Visual cues do not increase artificial nest predation in a Brazilian tropical savanna

2021 ◽  
Author(s):  
Paulo Victor Resende dos Santos ◽  
Ingrid Pinheiro Paschoaletto ◽  
Lia Nahomi Kajiki ◽  
Mariana de-Carvalho ◽  
Samara de Albuquerque Teixeira
Keyword(s):  
Nest Predation ◽  
Visual Cues ◽  
Tropical Savanna ◽  
Artificial Nest

scholarly journals The biodiversity cost of carbon sequestration in tropical savanna

2017 ◽  
Vol 3 (8) ◽  
pp. e1701284 ◽  
Author(s):  
Rodolfo C. R. Abreu ◽  
William A. Hoffmann ◽  
Heraldo L. Vasconcelos ◽  
Natashi A. Pilon ◽  
Davi R. Rossatto ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Tropical Savanna

scholarly journals Diversity and microdistribution of black fly (Diptera: Simuliidae) assemblages in the tropical savanna streams of the Brazilian cerrado

2012 ◽  
Vol 107 (3) ◽  
pp. 362-369 ◽  
Author(s):  
Ronaldo Figueiró ◽  
Leonardo Henrique Gil-Azevedo ◽  
Marilza Maia-Herzog ◽  
Ricardo Ferreira Monteiro
Keyword(s):  
Tropical Savanna ◽  
Brazilian Cerrado ◽  
Black Fly

Spectral linear mixture modelling approaches for land cover mapping of tropical savanna areas in Brazil

2007 ◽  
Vol 28 (2) ◽  
pp. 413-429 ◽  
Author(s):  
M. E. Ferreira ◽  
L. G. Ferreira ◽  
E. E. Sano ◽  
Y. E. Shimabukuro
Keyword(s):  
Land Cover ◽  
Land Cover Mapping ◽  
Tropical Savanna ◽  
Mixture Modelling ◽  
Modelling Approaches
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