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201.
Fritz Kleinschroth John R. Healey Sylvie Gourlet‐Fleury Frédéric Mortier Radu S. Stoica 《Conservation biology》2017,31(2):469-480
Forest degradation in the tropics is often associated with roads built for selective logging. The protection of intact forest landscapes (IFL) that are not accessible by roads is high on the biodiversity conservation agenda and a challenge for logging concessions certified by the Forest Stewardship Council (FSC). A frequently advocated conservation objective is to maximize the retention of roadless space, a concept that is based on distance to the nearest road from any point. We developed a novel use of the empty‐space function – a general statistical tool based on stochastic geometry and random sets theory – to calculate roadless space in a part of the Congo Basin where road networks have been expanding rapidly. We compared the temporal development of roadless space in certified and uncertified logging concessions inside and outside areas declared IFL in 2000. Inside IFLs, road‐network expansion led to a decrease in roadless space by more than half from 1999 to 2007. After 2007, loss leveled out in most areas to close to 0 due to an equilibrium between newly built roads and abandoned roads that became revegetated. However, concessions in IFL certified by FSC since around 2007 continuously lost roadless space and reached a level comparable to all other concessions. Only national parks remained mostly roadless. We recommend that forest‐management policies make the preservation of large connected forest areas a top priority by effectively monitoring – and limiting – the occupation of space by roads that are permanently accessible. 相似文献
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A better understanding of animal movements is of crucial importance for investigating numerous ecological issues. Developments in bio-logging technologies largely contributed to the observation and recording of animal displacements. Recently, several devices were developed to track animals in a three-dimensional space. However, given the larger number of variables, these advances generated new analytical problems and currently, few methods exist to analyse 3-D movements. In this study, we present a new technique, the Spherical First Passage Time (SFPT), to determine the scale of search behaviour in a volume. Building on the development of the First Passage Time (FPT) approach, SFPT measures the time required to cross a sphere along a 3-D path. We used simulations as they provide an opportunity to better understand processes involved in a system. Moreover, they offer the advantage of considerably increasing sample size in cases where empiric data remain scarce. However, in order to be more realistic, simulations were constrained within the physiological and behavioural features inherent to a diving animal, in this case beluga whales. First, we modelled three-dimensional movements as a correlated random walk for which the vertical and horizontal dimensions were considered simultaneously. One restricted search event was included in each simulation. Spatial scales obtained with the SFPT approach were compared to those obtained from the classical FPT analysis over the corresponding horizontal path. Results indicate a significant difference between the two approaches, suggesting that, in most cases, an approach in 2-D misrepresents spatial scale of search behaviour occurring in 3-D. Although we tested the SFPT with the example of a diving marine mammal, we argue that this method is applicable for all animals moving in a three-dimensional space. 相似文献
205.
Hajji Sawssen Ktari Naourez Ben Salah Riadh Boufi Sami Debeaufort Frédéric Nasri Moncef 《Journal of Polymers and the Environment》2022,30(3):833-854
Journal of Polymers and the Environment - Recently, there is an increasing interest to prepare wound healing agents based on bio-polymers, due to their non-toxicity, biocompatibility and... 相似文献
206.
Louzon Maxime Devalloir Quentin Gimbert Frédéric Pauget Benjamin Rieffel Dominique de Vaufleury Annette 《Environmental science and pollution research international》2021,28(14):17343-17354
Environmental Science and Pollution Research - An accurate assessment of the environmental risk of soils contaminated by metal(loid)s (MEs) requires quantifying exposure and knowing the toxicity of... 相似文献
207.
Louzon Maxime Gimbert Frédéric Belly Thibault Amiot Caroline Pauget Benjamin de Vaufleury Annette Capelli Nicolas 《Environmental science and pollution research international》2021,28(32):43629-43642
Environmental Science and Pollution Research - To date, no study has linked the environmental and the ecogenotoxicological bioavailability of contaminants to land snails. Yet, understanding the... 相似文献
208.
Li Zhen Yu Shaocai Li Mengying Chen Xue Zhang Yibo Li Jiali Jiang Yapping Liu Weiping Li Pengfei Lichtfouse Eric 《Environmental Chemistry Letters》2022,20(1):59-69
Environmental Chemistry Letters - Despite large decreases of emissions of air pollution during the coronavirus disease 2019 (COVID-19) lockdown in 2020, an unexpected regional severe haze... 相似文献
209.
Shan Jinhua Liu Hongbo Long Shiping Zhang Haodong Lichtfouse Eric 《Environmental Chemistry Letters》2022,20(1):27-33
Environmental Chemistry Letters - Declining earth resources, rising ore cost and increasing pollution are calling for recycling of wastewater in the context of the circular economy. In... 相似文献
210.
Choi Hosoon Chatterjee Piyali Hwang Munok Lichtfouse Eric Sharma Virender K. Jinadatha Chetan 《Environmental Chemistry Letters》2022,20(3):1539-1544
SARS-CoV-2 pandemic continues with emergence of new variants of concerns. These variants are fueling the third and fourth waves of pandemic across many nations. Here we describe the new emerging variants of SARS-CoV-2 and why they have enhanced infectivity and possess the ability to evade immunity.
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