The Taipan galaxy survey (hereafter simply ‘Taipan’) is a multi-object spectroscopic survey starting in 2017 that will cover 2π steradians over the southern sky (δ ≲ 10°, |b| ≳ 10°), and obtain optical spectra for about two million galaxies out to z < 0.4. Taipan will use the newly refurbished 1.2-m UK Schmidt Telescope at Siding Spring Observatory with the new TAIPAN instrument, which includes an innovative ‘Starbugs’ positioning system capable of rapidly and simultaneously deploying up to 150 spectroscopic fibres (and up to 300 with a proposed upgrade) over the 6° diameter focal plane, and a purpose-built spectrograph operating in the range from 370 to 870 nm with resolving power R ≳ 2000. The main scientific goals of Taipan are (i) to measure the distance scale of the Universe (primarily governed by the local expansion rate, H 0) to 1% precision, and the growth rate of structure to 5%; (ii) to make the most extensive map yet constructed of the total mass distribution and motions in the local Universe, using peculiar velocities based on improved Fundamental Plane distances, which will enable sensitive tests of gravitational physics; and (iii) to deliver a legacy sample of low-redshift galaxies as a unique laboratory for studying galaxy evolution as a function of dark matter halo and stellar mass and environment. The final survey, which will be completed within 5 yrs, will consist of a complete magnitude-limited sample (i ⩽ 17) of about 1.2 × 106 galaxies supplemented by an extension to higher redshifts and fainter magnitudes (i ⩽ 18.1) of a luminous red galaxy sample of about 0.8 × 106 galaxies. Observations and data processing will be carried out remotely and in a fully automated way, using a purpose-built automated ‘virtual observer’ software and an automated data reduction pipeline. The Taipan survey is deliberately designed to maximise its legacy value by complementing and enhancing current and planned surveys of the southern sky at wavelengths from the optical to the radio; it will become the primary redshift and optical spectroscopic reference catalogue for the local extragalactic Universe in the southern sky for the coming decade.

Maya elites and commoners intensively occupied the Itzan escarpment, located in the lower Río de la Pasión drainage system of Petén, Guatemala, during the Preclassic and Protoclassic periods. Itzan was colonized during the Xe phase of the Middle Preclassic period, and its occupation intensified during the late Middle and Late Preclassic periods, when elite residential and ceremonial facilities were erected. During the Late Preclassic and Protoclassic periods, the escarpment was dominated by Chaak Ak'al, a large site distinguished by massive pyramids and lengthy wall-like constructions, which undoubtedly served as a polity capital. Subsequent to the Protoclassic period, the locus of activity atop the escarpment shifted back to Itzan, which served as a polity capital through the Late Classic period. From data collected at Itzan, Chaak Ak'al, and other sites of the lower Río de la Pasión drainage system, a picture of regional Preclassic Maya political geography is emerging.

Through analyses of data recovered at Itzán, Guatemala, this paper examines the architectural morphology and the probable functions of “invisible” building remains in the Maya Lowlands. Invisible building remains are buried, leave no surface traces, and cannot be detected during surface survey, which is the principal settlement detection technique employed by Mayanists. Data at Itzán and other sites suggest that Maya invisible buildings are a more abundant settlement category than many archaeologists have supposed.

This paper addresses how the rulers of the Classic Maya sought to promote polity cohesion and to maintain power. New information is presented on scribe capture and its importance in reinforcing the power and importance of the king.

Magnetic, palynological, and paleoecological data indicate that in the Río de la Pasión drainage, one of the most thoroughly investigated areas of the southern Maya lowlands, a refugee population remained in the Laguna Las Pozas basin long after the Classic Maya collapse and the Terminal Classic period, previously identified by archaeologists as eras of near-total regional abandonment. During the Early Postclassic period, ca. A. D. 900 to 1200, agriculturalists colonized and deforested the Laguna Las Pozas basin for agriculture while adjacent, abandoned terrain was undergoing reforestation. After discussing the archaeological utility of magnetic analyses, we conclude that following the Maya collapse, some refugee populations migrated to geographically marginal non-degraded landscapes within the southern lowlands not previously occupied by the Classic Maya.