Search results for "Landscape"

Seasonal response of vegetation on pollutants removal in constructed wetland system treating dairy wastewater

2022

Constructed wetland systems provide the ideal solution for small and medium dairy farms as they can be built close to the farm and are easy to manage and use. However, their perfomance is significantly affected by vegetation activity during the year. The aims of the present study were to assess the treatment of dairy wastewater (DWW) by a horizontal subsurface flow system (HSSFs) and the effect of plants in the removal efficiency (RE) of BOD5, COD, total N (TN) and total P (TP), in Sicily (Italy). The HSSFs treated 6/7 m3 per day of wastewater produced by a small dairy farm subsequent to biological treatment. The system included two units which were separately planted with Arundo donax L. a…

LUMINESCENCE STUDY OF DETERGENT OPTICAL BRIGHTENERS IN THE CONTEXT OF DEVELOPING OPTICAL ENVIRONMENTAL SENSORS FOR WATER QUALITY CONTROL

2006

Water quality and anthropogenic loads in many, but not all, cases are related. Some water quality monitoring programs analyse samples for the presence of Escherichia coli. These bacteria can come from humans and animals. Human‐attributable effluent contains optical brighteners (OBs) from detergents. A convenient and affordable optical quantitative method giving a linear luminescence outcome over several orders of detergent concentrations in the water solution is demonstrated. The proposed method uses the common presence of OBs in detergents. Detergent concentration in water can be used as a surrogate indicator of resultant anthropogenic loads in water bodies. The proposed optical method wit…

Variation in spawning time promotes genetic variability in population responses to environmental change in a marine fish.

2015

Common-garden experiments suggest that the response of Atlantic cod larvae to temperature differs among populations that spawn at different times of year. Populations appear to be adapted to the temperatures experienced during the larval stage at a small spatial scale, despite a lack of physical barriers to gene flow.

Evaluating the effects of forest tree species on rill detachment capacity in a semi-arid environment

2021

Abstract The beneficial effects of plant roots in decreasing soil detachment in forest ecosystems exposed to rill erosion are well known. However, these effects vary largely between different plant species. There has been lots of research into the relationship between root-soil systems and rill erodibility with a particular focus on grass species. Conversely, fewer studies are available for tree species, especially in forests of semi-arid or arid environments. Greater knowledge is therefore needed to identify the most effective tree species against rill erosion in these ecosystems, where water availability is the limiting factor for vegetation growth and afforestation is often the only solu…

La sociedad y el espacio público

2019

El espacio público y los actos de la propia sociedad, ¿hasta dónde llega el límite de unos para que comience el derecho de los otros? Son muchas las actuaciones que se suceden en la vía pública y que tienen una repercusión, en la mayoría de los casos, negativa para el paisaje urbano. En esta fina línea, entre la preservación del paisaje urbano y los derechos que la ley confiere a los ciudadanos, se enmarcan las ordenanzas de convivencia ciudadana como el mecanismo adecuado que normativice las conductas que inciden en el espacio público. Se juzga imprescindible analizar las normas de convivencia que presiden nuestro país, a fin de dar con soluciones ecuánimes que garanticen la viabilidad de …

Storia dell’eucalitticoltura in Sicilia.

2013

Eucalyptus, Italia, paesaggio, rimboschimento, selvicoltura, storia Gli eucalitti vantano una lunga storia nel nostro paese; erano già presenti infatti in Campania all’inizio dell’800 nel giardino botanico annesso alla regia di Caserta e fu proprio l’Hortus Camaldulensis a dare il nome all’Eucalyptus camaldulensis una delle specie più diffuse in Italia e nel Mondo. I primi impianti in Italia vanno fatti risalire al 1869 ad opera dei monaci della “Abbazia delle Tre Fontane” a Roma. Le ragioni iniziali della diffusione degli eucalitti vanno legate alla convinzione che potessero rendere salubre l’aria e contrastare la diffusione della malaria, effetto dovuto alla capacità dell’eucalipto di pro…

Management of Cultural Landscapes: What Does this Mean in the Former Soviet Union? A Case Study from Latvia

2009

Concern about changing cultural landscapes has increased recently, with the advent of the European Landscape Convention placing signatory countries in a position of having to develop action for protecting and managing cultural landscapes. In countries of the former Soviet Union the landscape underwent many changes as a result of agricultural collectivisation and its aftermath. This situation has been analysed for six sample rural municipalities (pagasts) in Latvia, one of the three former Soviet countries to join the European Union (EU), using maps from the period 1901 to 1927 (to represent the ‘traditional landscape’) and 1997 orthophotographs updated to 2000 (to represent the ‘post-Soviet…

Spatial system of landscape protection on Poland

2014

Literature, social media and questionnaire surveys identify relevant conservation areas for Carcharhinus species in the Mediterranean Sea

2023

Sharks support ecosystems’ health, but their populations are facing severe declines worldwide. Knowledge gaps on shark distribution and the negative human perception of them still represent a barrier to the implementation of effective conservation measures. Here we carried out a regional-scale analysis in the Mediterranean Sea using data on requiem shark catches and sightings available in the scientific literature and on social media platforms to: 1) depict the distribution of Carcharhinus species across the basin, 2) identify potentially relevant areas for their conservation, and 3) evaluate people’s attitude toward shark protection. In addition, we administered 112 questionnaires in one o…

Local Extinction of Dragonfly and Damselfly Populations in Low- and High-Quality Habitat Patches

2010

Understanding the risk of extinction of a single population is an important problem in both theoretical and applied ecology. Local extinction risk depends on several factors, including population size, demographic or environmental stochasticity, natural catastrophe, or the loss of genetic diversity. The probability of local extinction may also be higher in low-quality sink habitats than in high-quality source habitats. We tested this hypothesis by comparing local extinction rates of 15 species of Odonata (dragonflies and damselflies) between 1930-1975 and 1995-2003 in central Finland. Local extinction rates were higher in low-quality than in high-quality habitats. Nevertheless, for the thre…