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111.
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
112.
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
113.
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
114.
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
115.
Ouédraogo Frédéric Cornu Jean-Yves Janot Noémie Nguyen Christophe Sourzac Mahaut Parlanti Edith Denaix Laurence 《Environmental science and pollution research international》2022,29(20):29268-29284
Environmental Science and Pollution Research - Accumulation of copper (Cu) in soils due to the application of fungicides may be toxic for organisms and hence affect winegrowing sustainability. Soil... 相似文献
116.
Colpaert Romain Petit dit Grézériat Lucas Louzon Maxime de Vaufleury Annette Gimbert Frédéric 《Environmental science and pollution research international》2022,29(20):29258-29267
Environmental Science and Pollution Research - Plastic has become the most widespread human-made material and small fragments (< 5mm, so called microplastics, MPs) accumulate in all the... 相似文献
117.
Bertin Philippe N. Crognale Simona Plewniak Frédéric Battaglia-Brunet Fabienne Rossetti Simona Mench Michel 《Environmental science and pollution research international》2022,29(7):9462-9489
Environmental Science and Pollution Research - Owing to their roles in the arsenic (As) biogeochemical cycle, microorganisms and plants offer significant potential for developing... 相似文献
118.
119.
Marina?Fontaine Alice?Carravieri Beno?t?Simon-Bouhet Paco?Bustamante Nicolas?Gasco Frédéric?Bailleul Christophe?Guinet Yves?CherelEmail author 《Marine Biology》2015,162(1):207-219
The food and feeding ecology of the poorly known southern long-finned pilot whale (Globicephala melas edwardii) was investigated using ecological tracers (muscle and skin δ13C and δ15N, and total mercury, Hg) on individuals from two mass strandings together with at-sea observations of live animals in Kerguelen waters, southern Indian Ocean. Sightings of cetaceans from longliners over 9 years (2003–2012) emphasized the regular occurrence of pilot whales in slope waters surrounding the archipelago. Tissue δ13C values (a proxy of consumer foraging habitat) suggest that pilot whales fed in slope waters and in oceanic subantarctic waters over the last months preceding stranding. Tissue δ15N values and Hg concentration (dietary proxies) indicate a high trophic position (~4.7) for the pilot whales, likely corresponding to a mixed diet of fish and squid (not crustaceans) of undetermined species. Both skin and muscle Hg concentrations were positively and linearly correlated to individual size with no concomitant δ15N changes, which can be interpreted as a progressive Hg accumulation in tissues of individuals throughout life with no parallel dietary shift. Skin and muscle Hg concentrations were linearly and positively related; hence, Hg skin could be used as a proxy of Hg concentration in muscle (a main Hg reservoir of the body). Kerguelen southern long-finned pilot whales were less Hg contaminated than most pilot whale populations studied so far, thus suggesting that they are not at a high risk to Hg-induced damages in the remote islands of the Southern Ocean. 相似文献
120.