Vegetation and fire history of coastal north-eastern Sardinia (Italy) under changing Holocene climates and land use

Little is known about the vegetation and fire history of Sardinia, and especially the long-term history of the thermo-Mediterranean belt that encompasses its entire coastal lowlands. A new sedimentary record from a coastal lake based on pollen, spores, macrofossils and microscopic charcoal analysis is used to reconstruct the vegetation and fire history in north-eastern Sardinia. During the mid-Holocene (c. 8,100–5,300 cal bp), the vegetation around Stagno di Sa Curcurica was characterised by dense Erica scoparia and E. arborea stands, which were favoured by high fire activity. Fire incidence declined and evergreen broadleaved forests of Quercus ilex expanded at the beginning of the late Holocene. We relate the observed vegetation and fire dynamics to climatic change, specifically moister and cooler summers and drier and milder winters after 5,300 cal bp. Agricultural activities occurred since the Neolithic and intensified after c. 7,000 cal bp. Around 2,750 cal bp, a further decline of fire incidence and Erica communities occurred, while Quercus ilex expanded and open-land communities became more abundant. This vegetation shift coincided with the historically documented beginning of Phoenician period, which was followed by Punic and Roman civilizations in Sardinia. The vegetational change at around 2,750 cal bp was possibly advantaged by a further shift to moister and cooler summers and drier and milder winters. Triggers for climate changes at 5,300 and 2,750 cal bp may have been gradual, orbitally-induced changes in summer and winter insolation, as well as centennial-scale atmospheric reorganizations. Open evergreen broadleaved forests persisted until the twentieth century, when they were partly substituted by widespread artificial pine plantations. Our results imply that highly flammable Erica vegetation, as reconstructed for the mid-Holocene, could re-emerge as a dominant vegetation type due to increasing drought and fire, as anticipated under global change conditions.

Dust fluxes and iron fertilization in Holocene and Last Glacial Maximum climates

Mineral dust aerosols play a major role in present and past climates. To date, we rely on climate models for estimates of dust fluxes to calculate the impact of airborne micronutrients on biogeochemical cycles. Here we provide a new global dust flux data set for Holocene and Last Glacial Maximum (LGM) conditions based on observational data. A comparison with dust flux simulations highlights regional differences between observations and models. By forcing a biogeochemical model with our new data set and using this model's results to guide a millennial-scale Earth System Model simulation, we calculate the impact of enhanced glacial oceanic iron deposition on the LGM-Holocene carbon cycle. On centennial timescales, the higher LGM dust deposition results in a weak reduction of <10?ppm in atmospheric CO2 due to enhanced efficiency of the biological pump. This is followed by a further ~10?ppm reduction over millennial timescales due to greater carbon burial and carbonate compensation.

Construction of a Sustainable City Park in Ruddle, WV: A Model for Sustainable Park Design in Humid Climates

Three sustainable projects were studied under a sustainable park model for humid climates to determine where their costs lie in terms of installation, maintenance or both. These projects included the use of solar lighting to replace every configuration of conventional lighting, inclusion of a water garden/bog filter and Riparian Buffer System for the purposes of filtering sediments and nutrients out of runoff to prevent contaminated runoff from reaching the river that was adjacent to the park model location and construction of a LEED-inspired building to serve as the concession stand/restrooms building. The aggregate cost savings of instituting all three projects over ten years was $74,120 and the entire project paid itself off in approximately four years.

Performance of aerated lagoons in northern climates /

"January 1979."

Modern fresh-air poultry houses; a new book on common sense housing of poultry--plans, dimensions and instructions for building open-front poultry houses and fresh-air equipment--fresh-air methods and open-air living--most practical and desirable for successful poultry keeping in all climates;

Mode of access: Internet.

Medical discipline, or, Rules and regulations for preserving the health of seamen in voyages to hot climates, more especially of those in the service of the East India Company ... /

Mode of access: Internet.

Notes on the West Indies : written during the expedition under the command of the late General Sir Ralph Abercromby, including observations on the island of Barbadoes, and the settlements captured by the British troops, upon the coast of Guiana, likewise remarks relating to the creoles and slaves of the western colonies, and the Indians of South America, with occasional hints, regarding the seasoning, or yellow fever of hot climates /

Rich,

The influence of tropical climates on european constitutions : to which is added tropical hygiene or the preservation of health in all hot climates /

Mode of access: Internet.

The seaman's medical instructor, in a course of lectures on accidents and diseases incident to seamen, in the various climates of the world ... /

Mode of access: Internet.

An essay on diseases incidental to Europeans in hot climates with the method of preventing their fatal consequences /

Mode of access: Internet.

An essay on diseases incidental to Europeans in hot climates with the method of preventing their fatal consequences /

Mode of access: Internet.

The vegetable garden : illustrations, descriptions and culture of the garden vegetables of cold and temperate climates by M.M. Vilmorin-Andrieux, of Paris.

Mode of access: Internet.

Climates of the States

Mode of access: Internet.

Climates of the Northwest : being condensed notes of a lecture /

Map on p. [2] of cover.

The American practice condensed. Or, The family physician; being the scientific system of medicine; on vegetable principles, designed for all classes ... This work embraces the character, causes, symptoms, and treatment of the diseases of men, women, and children of all climates.

Earlier editions issued under title: Beach's family physician and home guide.