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Iwińska K, Wirowska M, Borowski Z, Boratyński Z, Solecki P, Ciesielski M, Boratyński JS. Energy allocation is revealed while behavioural performance persists after fire disturbance. J Exp Biol 2024; 227:jeb247114. [PMID: 38323432 DOI: 10.1242/jeb.247114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/31/2024] [Indexed: 02/08/2024]
Abstract
Metabolic physiology and animal behaviour are often considered to be linked, positively or negatively, according to either the performance or allocation models. Performance seems to predominate over allocation in natural systems, but the constraining environmental context may reveal allocation limitations to energetically expensive behaviours. Habitat disturbance, such as the large-scale fire that burnt wetlands of Biebrza National Park (NE Poland), degrades natural ecosystems. It arguably reduces food and shelter availability, modifies predator-prey interactions, and poses a direct threat for animal survival, such as that of the wetland specialist root vole Microtus oeconomus. We hypothesized that fire disturbance induces physiology-behaviour co-expression, as a consequence of changed environmental context. We repeatedly measured maintenance and exercise metabolism, and behavioural responses to the open field, in a root voles from post-fire and unburnt locations. Highly repeatable maintenance metabolism and distance moved during behavioural tests correlated positively, but relatively labile exercise metabolism did not covary with behaviour. At the same time, voles from a post-fire habitat had higher maintenance metabolism and moved shorter distances than voles from unburnt areas. We conclude there is a prevalence of the performance mechanism, but simultaneous manifestation of context-dependent allocation constraints of the physiology-behaviour covariation after disturbance. The last occurs at the within-individual level, indicating the significance of behavioural plasticity in the context of environmental disturbance.
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Affiliation(s)
- Karolina Iwińska
- University of Białystok Doctoral School in Exact and Natural Sciences, 15-245 Białystok, Poland
| | - Martyna Wirowska
- Adam Mickiewicz University, Department of Systematic Zoology, 61-614 Poznań, Poland
| | | | - Zbyszek Boratyński
- BIOPOLIS, CIBIO/InBio, Research Center in Biodiversity & Genetic Resources, University of Porto, 4485-661 Vairão, Portugal
| | - Paweł Solecki
- Faculty of Electronics and Information Technology, Warsaw University of Technology, 00-665 Warsaw, Poland
| | | | - Jan S Boratyński
- Mammal Research Institute, Polish Academy of Sciences, 17-230 Białowieża, Poland
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Qiu M, Fu M, Zhang Z, Fu S, Yuan C. Assessing the ecological risk of croplands in loess drylands by combining environmental disturbance with ecosystem vulnerability. J Environ Manage 2023; 347:119231. [PMID: 37804628 DOI: 10.1016/j.jenvman.2023.119231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/18/2023] [Accepted: 10/02/2023] [Indexed: 10/09/2023]
Abstract
Agroecosystems suffer various ecological risks due to the intensive production of crops. However, comprehensive assessments of cropland ecological risks remain limited. This study developed an assessment method for cropland ecological risks by combining environmental disturbance with ecosystem vulnerability. Environmental disturbance reflects stresses caused by risk sources in an environment, while ecosystem vulnerability is the susceptibility of an ecosystem to adverse disturbances and its capacity to cope and adapt. The proposed method is conducive to understanding the complex exposure-response relationship between croplands and environmental stresses. Cropland ecological risk was evaluated by conducting a case study on a loess dryland region in Shaanxi. The hot spots and driving factors of risk were explored using spatial autocorrelation and quantile regression methods, respectively. Results show that overall cropland ecological risk is at medium low level. Risk hot spots are concentrated in the north of the loess dryland. Ecosystem vulnerability exerts greater effect on the distribution of hot spots than environmental disturbance in the study area. Road density (RDD), river density, and soil organic matter exert the most important effects on cropland ecological risk. Moreover, the same driving factor exhibits various effects on cropland ecological risk in different risk level areas. RDD, slope, precipitation, elevation, fertilizer application rate, gross domestic product, and distance to town center have greater effects on risk in regions with high cropland ecological risk than in regions with low cropland ecological risk. The findings of this study must be considered in formulating targeted policies for controlling cropland ecological risk in loess drylands to realize sustainable crop production.
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Affiliation(s)
- Menglong Qiu
- Center for Land Resource Research in Northwest China, Shaanxi Normal University, Xi'an, 710119, China
| | - Mengyu Fu
- Center for Land Resource Research in Northwest China, Shaanxi Normal University, Xi'an, 710119, China
| | - Zhiwei Zhang
- Anqiu Bureau of Agriculture and Rural Affairs, Weifang, 262100, China
| | - Shaowu Fu
- Center for Land Resource Research in Northwest China, Shaanxi Normal University, Xi'an, 710119, China
| | - Chengcheng Yuan
- College of Land Science and Technology, China Agricultural University, Beijing, 100193, China.
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3
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Zhu F, Wei Y, Wang F, Xia Z, Gou M, Tang Y. Enrichment of microbial consortia for MEOR in crude oil phase of reservoir-produced liquid and their response to environmental disturbance. Int Microbiol 2023:10.1007/s10123-023-00458-7. [PMID: 38010566 DOI: 10.1007/s10123-023-00458-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/07/2023] [Accepted: 11/17/2023] [Indexed: 11/29/2023]
Abstract
Developing microbial consortiums is necessary for microbial enhanced oil recovery (MEOR) in heavy crude oil production. The aqueous phase of produced fluid has long been considered an ideal source of microorganisms for MEOR. However, it is recently found that rich microorganisms (including hydrocarbon-degrading bacteria) are present in the crude oil phase, which is completely different from the aqueous phase of produced fluid. So, in this study, the microbial consortia from the crude oil phase of produced fluids derived from four wells were enriched, respectively. The microbial community structure during passage was dynamically tracked, and the response of enriched consortia to successive disturbance of environmental factors was investigated. The results showed the crude oil phase had high microbial diversity, and the original microbial community structure from four wells was significantly different. After ten generations of consecutive enrichment, different genera were observed in the four enriched microbial consortia, namely, Geobacillus, Bacillus, Brevibacillus, Chelativorans, Ureibacillus, and Ornithinicoccus. In addition, two enriched consortia (eG1614 and eP30) exhibited robustness to temperature and oxygen perturbations. These results further suggested that the crude oil phase of produced fluids can serve as a potential microbial source for MEOR.
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Affiliation(s)
- Fangfang Zhu
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Yanfeng Wei
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Fangzhou Wang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Ziyuan Xia
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Min Gou
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China.
| | - Yueqin Tang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
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Castro-Cadenas MD, Loiseau C, Reimer JM, Claudet J. Tracking changes in social-ecological systems along environmental disturbances with the ocean health index. Sci Total Environ 2022; 841:156423. [PMID: 35660614 DOI: 10.1016/j.scitotenv.2022.156423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 04/14/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
The well-being of coastal communities is intimately tied to a healthy ocean, but coastal social-ecological systems are among the most vulnerable to global change. Improving the resilience of coastal communities requires an understanding of how local social-ecological systems respond to shocks to better inform decision-making and adapt local management interventions. However, assessments of social-ecological changes throughout a disturbance regime are scarce at the local level, although critical for efficient natural resource management and sustainable use of ocean ecosystem services. Here, we apply the Ocean Health Index (OHI) to assess the status of the marine social-ecological system of a tropical island (Moorea, French Polynesia), and track changes of the system before, during and after a disturbance regime. Our results show that while there are signs of social-ecological recovery, coastal protection was most affected along the disturbance, and that there is room for improvement toward biodiversity conservation. In addition, our study highlights some context-specific challenges associated with local OHI assessments, particularly those driven by limited fisheries data and appropriate reference point selection for coastal protection. Our results demonstrate the value of localized, regular OHI assessments through time to track changes in marine social-ecological systems, while uncovering important data gaps, to inform management at appropriate scales for decision-making.
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Affiliation(s)
- María D Castro-Cadenas
- National Center for Scientific Research, PSL Université Paris, CRIOBE, USR 3278 CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, 75005 Paris, France.
| | - Charles Loiseau
- National Center for Scientific Research, PSL Université Paris, CRIOBE, USR 3278 CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, 75005 Paris, France
| | - Julie M Reimer
- Department of Geography, Memorial University of Newfoundland, Newfoundland, Canada
| | - Joachim Claudet
- National Center for Scientific Research, PSL Université Paris, CRIOBE, USR 3278 CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, 75005 Paris, France; Laboratoire d'Excellence CORAIL, Moorea, French Polynesia
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Chaves ÓM, Júnior JCS, Buss G, Hirano ZMB, Jardim MMA, Amaral ELS, Godoy JC, Peruchi AR, Michel T, Bicca-Marques JC. Wildlife is imperiled in peri-urban landscapes: threats to arboreal mammals. Sci Total Environ 2022; 821:152883. [PMID: 35038525 DOI: 10.1016/j.scitotenv.2021.152883] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/29/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
Urbanization and deforestation impose severe challenges to wildlife, particularly for forest-living vertebrates. Understanding how the peri-urban matrix impacts their survival is critical for designing strategies to promote their conservation. We investigated the threats faced by brown howler monkeys (Alouatta guariba clamitans) in peri-urban regions of Rio Grande do Sul (RS) and Santa Catarina (SC) states, southern Brazil, by compiling negative interaction events (hereafter NIE) reported over more than two decades. We assessed the major NIEs, their distribution among age-sex classes, and the predictors of NIE-related mortality. After 20+ years of monitoring, we compiled 540 NIEs (RS = 248 and SC = 292). Electrocution by power lines was the most frequent cause of death or injury (37%), followed by dog attack (34%), vehicle collision (17%), and human mistreatment (12%). The occurrence of lethal injuries ranged from 5% to 69% depending on the type of NIE and on which state it occurred in. The overall post-NIE mortality was 56%. Adults of both sexes were the most affected individuals in both study regions. The minimal adequate GLM model explained 83% of the variation in NIE-related mortality. State, NIE type, and age-sex class were the main predictors of mortality. Overall, mortality was lower in SC and higher among adult females than in the other classes. We found that the survival of brown howler monkeys in the forest-urban interface is constrained by both the urban infrastructure and the growing interactions with humans and domestic and stray dogs (Canis familiaris). We propose the placement of aerial bridges, road signs and speed bumps in areas of frequent animal crossing, the sterilization of stray dogs, and the sensitization of local inhabitants on the importance of respecting and protecting wildlife to reduce their NIEs with humans and domestic animals in the forest-urban interface.
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Affiliation(s)
- Ó M Chaves
- Escuela de Biología, Universidad de Costa Rica, San Pedro de Montes de Oca, 2060 San José, Costa Rica; Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
| | - J C Souza Júnior
- Centro de Pesquisas Biológicas de Indaial, Indaial, Santa Catarina, Brazil; Fundação Universidade Regional de Blumenau-FURB, Blumenau, Brazil
| | - G Buss
- Centro de Pesquisa e Conservação de Primatas Brasileiros (CPB), Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio), João Pessoa, Brazil; Programa Macacos Urbanos (PMU), Universidade Federal do Rio Grande do Sul (UFRGS), Brazil
| | - Z M B Hirano
- Centro de Pesquisas Biológicas de Indaial, Indaial, Santa Catarina, Brazil; Fundação Universidade Regional de Blumenau-FURB, Blumenau, Brazil
| | - M M A Jardim
- Programa Macacos Urbanos (PMU), Universidade Federal do Rio Grande do Sul (UFRGS), Brazil; Museu de Ciências Naturais, Departamento de Biodiversidade, Secretaria do Meio Ambiente e Infraestrutura (MCN/SEMA-RS), Brazil
| | - E L S Amaral
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - J C Godoy
- Programa Macacos Urbanos (PMU), Universidade Federal do Rio Grande do Sul (UFRGS), Brazil
| | - A R Peruchi
- Fundação Universidade Regional de Blumenau-FURB, Blumenau, Brazil
| | - T Michel
- Museu de Ciências Naturais, Departamento de Biodiversidade, Secretaria do Meio Ambiente e Infraestrutura (MCN/SEMA-RS), Brazil
| | - J C Bicca-Marques
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Fujii T, Kaneko K, Nakamura Y, Murata H, Kuraishi M, Kijima A. Assessment of coastal anthropo-ecological system dynamics in response to a tsunami catastrophe of an unprecedented magnitude encountered in Japan. Sci Total Environ 2021; 783:146998. [PMID: 34088130 DOI: 10.1016/j.scitotenv.2021.146998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
On 11 March 2011, a catastrophic earthquake and subsequent tsunami hit the Pacific coast of northern Japan, devastating many of the towns, villages and coastal ecosystems located along the shoreline. To assess the impacts of the disaster, we investigated temporal dynamics of fish and epibenthic megafaunal community structure in relation to changes in a range of physical, biological and anthropogenic variables between 2007 and 2018 in Onagawa Bay. Commercially important fish such as greenlings, Japanese anchovy, flatfishes, rockfishes were consistently abundant in both larval and adult fish assemblages. While abundance, species richness, and Shannon index H' for adult fish and epibenthic megafaunal assemblages increased significantly soon after the disaster to peak values towards the end of the study period, the same metrics did not change accordingly for larval fish assemblages. Temporal dynamics of larval fish community clearly demonstrated significant seasonal variation along with changes in large-scale environmental conditions such as temperature and nutrients. However, anthropogenic components such as decline in human population, reduction in fishing pressure and the recovery of aquaculture operations significantly explained the observed post-disaster change in adult fish and epibenthic megafaunal communities. The pelagic and benthic components of Onagawa Bay appeared to have responded to the 2011 disaster very differently, and this study suggests the post-disaster recovery and dynamics of the coastal ecosystems may be regulated by how human societies respond to the impacts of a tsunami catastrophe through their influences on benthic habitat of ecosystems.
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Affiliation(s)
- Toyonobu Fujii
- Tohoku Ecosystem-Associated Marine Sciences, Graduate school of Agricultural Science, Tohoku University, Onagawa, Japan.
| | - Kenji Kaneko
- Tohoku Ecosystem-Associated Marine Sciences, Graduate school of Agricultural Science, Tohoku University, Onagawa, Japan
| | - Yuka Nakamura
- Tohoku Ecosystem-Associated Marine Sciences, Graduate school of Agricultural Science, Tohoku University, Onagawa, Japan
| | - Hiroki Murata
- Graduate school of Agricultural Science, Tohoku University, Sendai, Japan
| | - Megumi Kuraishi
- Tohoku Ecosystem-Associated Marine Sciences, Graduate school of Agricultural Science, Tohoku University, Onagawa, Japan
| | - Akihiro Kijima
- Tohoku Ecosystem-Associated Marine Sciences, Graduate school of Agricultural Science, Tohoku University, Onagawa, Japan
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Whicker JJ, Breshears DD, McNaughton M, Chastenet de Gery MJ, Bullock C. Radionuclide resuspension across ecosystems and environmental disturbances. J Environ Radioact 2021; 233:106586. [PMID: 33774592 DOI: 10.1016/j.jenvrad.2021.106586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 02/28/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Exposure assessment from radionuclides and other soil-bound contaminants often requires quantifying the amount of contaminant resuspended in the air. Rates and controlling factors of radionuclide resuspension and wind erosion of soil are clearly related but have largely been studied separately. Here, we review both and then integrate wind erosion measurements with the radiological resuspension paradigm to provide better estimates of resuspension factors across a broad range of ecosystems and environmental conditions. Radionuclide resuspension by wind was initially investigated during the era of aboveground nuclear weapons testing. Predictive dose models were developed from empirically-derived ratios of air and soil concentrations, otherwise called the resuspension factor. Resuspension factors were shown to generally predict radionuclide concentrations in air, but they were site-specific and largely derived from the arid and semi-arid environments surrounding nuclear weapons testing locations. In contrast, wind erosion studies from the agricultural and environmental sciences have produced more mechanistic models and a relatively robust data set of wind erosion rates and model parameters across a range of ecosystems. We sequentially show the mathematics linking measured sediment flux from wind erosion rate measurements to resuspension factors using the concept of transport capacity and its relationship to the deposition velocity. We also describe the conceptual framework describing how resuspension factors change through time and the mathematical models describing this decrease. We then show how vertical mass flux measurements across ecosystems were categorized and used to calculate ecosystem-based resuspension factors. These calculations allow generalized estimation of radionuclide resuspension factors across ecosystem types as a function of disturbance and as input for dose calculations.
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Affiliation(s)
- Jeffrey J Whicker
- Los Alamos National Laboratory, Mail Stop J978, Los Alamos, NM, 87545, USA.
| | - David D Breshears
- University of Arizona, School of Natural Resources, Institute for the Study of Planet Earth, Department of Ecology and Evolutionary Biology, Biological Sciences East 325, P.O. Box 210043, Tucson, AZ, 85721-0043, USA
| | - Michael McNaughton
- Los Alamos National Laboratory, Mail Stop J978, Los Alamos, NM, 87545, USA
| | | | - Christine Bullock
- Los Alamos National Laboratory, Mail Stop J978, Los Alamos, NM, 87545, USA
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Wan W, Grossart HP, He D, Yuan W, Yang Y. Stronger environmental adaptation of rare rather than abundant bacterioplankton in response to dredging in eutrophic Lake Nanhu (Wuhan, China). Water Res 2021; 190:116751. [PMID: 33348071 DOI: 10.1016/j.watres.2020.116751] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/08/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
Deciphering responses of rare versus abundant bacterioplankton to environmental change, crucial for understanding and mitigating of cyanobacterial blooms, is an important but poorly investigated subject. Using MiSeq sequencing, we investigated the taxonomic and phylogenetic diversity of rare and abundant bacterioplankton in eutrophic Lake Nanhu before and after dredging. We estimated environmental breadths and phylogenetic signals of ecological preferences of rare and abundant bacterioplankton, and investigated community function and bacterioplankton assembly processes. Both taxonomic and phylogenic distances of rare and abundant bacterioplankton communities were significantly positively correlated with the dissimilarity of environmental factors. Threshold indicator taxa analysis and Blomberg's K statistic indicated that rare taxa held broader environmental thresholds and stronger phylogenetic signals for ecological traits than abundant taxa. Environmental adaptations of both rare and abundant taxa exhibited distinct changes after dredging. Higher functional redundancy occurred in the abundant compared to the rare bacterioplankton, with functions of rare bacterioplankton decreasing and for the abundant ones increasing after dredging. The null model revealed that dispersal limitation belonging to stochastic processes determined the abundant bacterioplankton community assembly, whereas variable selection belonging to deterministic processes drove the rare one. Rare bacterioplankton was more environmentally constrained than the abundant one. Dissolved oxygen was the decisive factor in determining the balance between stochasticity and determinism in both rare and abundant bacterioplankton. Our study extends our knowledge of environmental adaptation of rare versus abundant bacterioplankton to massive disturbing measures, i.e. dredging, and allows to estimate dredging performance for mitigating cyanobacterial blooms from a molecular ecology viewpoint.
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Affiliation(s)
- Wenjie Wan
- Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, PR China; Center of the Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, PR China
| | - Hans-Peter Grossart
- Leibniz-Institude of Freshwater Ecology and Inland Fisheries (IGB), 16775, Neuglobsow, Germany; University of Potsdam, Institute of Biochemistry and Biology, Maulbeerallee 2, 14469, Potsdam, Germany
| | - Donglan He
- College of Life Science, South-Central University for Nationalities, Wuhan 430070, PR China
| | - Wenke Yuan
- Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, PR China; Center of the Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, PR China
| | - Yuyi Yang
- Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, PR China; Center of the Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, PR China.
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Hilaluddin F, Yusoff FM, Natrah FMI, Lim PT. Disturbance of mangrove forests causes alterations in estuarine phytoplankton community structure in Malaysian Matang mangrove forests. Mar Environ Res 2020; 158:104935. [PMID: 32217292 DOI: 10.1016/j.marenvres.2020.104935] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 01/26/2020] [Accepted: 02/29/2020] [Indexed: 06/10/2023]
Abstract
To assess the effects of environmental changes on phytoplankton community structure in a mangrove ecosystem, phytoplankton distribution in Matang mangrove, Malaysia was examined. Phytoplankton and water samples, and in situ environmental parameters from three estuaries with differing levels of disturbance were examined monthly for one year. Two species, Cyclotella choctawhatcheeana and Skeletonema costatum, were dominant in the least disturbed and moderately disturbed areas, respectively. Skeletonema costatum was also the most dominant in the most disturbed area. Significant differences in phytoplankton density and biodiversity between the least and most disturbed areas were also observed. Principle component 1 (salinity, conductivity, total solids/water transparency and nitrogenous compounds) and PC2 (dissolved oxygen, pH and temperature) explained 60.4% of the total variance. This study illustrated that changes in phytoplankton community structure in Matang mangrove estuaries were significantly correlated with environmental parameters which were in turn influenced by ecosystem disturbance levels as well as seasonal changes.
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Affiliation(s)
- Fareha Hilaluddin
- Laboratory of Marine Biotechnology, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - F M Yusoff
- Laboratory of Marine Biotechnology, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia; Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia; International Institute of Aquaculture and Aquatic Sciences (I-AQUAS), Universiti Putra Malaysia (UPM), 43400, Selangor, Malaysia.
| | - F M I Natrah
- Laboratory of Marine Biotechnology, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia; Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia; International Institute of Aquaculture and Aquatic Sciences (I-AQUAS), Universiti Putra Malaysia (UPM), 43400, Selangor, Malaysia
| | - P T Lim
- Bachok Marine Research Station, Institute of Ocean and Earth Sciences, University of Malaya, 16310, Bachok, Kelantan, Malaysia
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Wilkinson BP, Satgé YG, Lamb JS, Jodice PGR. Tropical cyclones alter short-term activity patterns of a coastal seabird. Mov Ecol 2019; 7:30. [PMID: 31673358 PMCID: PMC6816181 DOI: 10.1186/s40462-019-0178-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 10/09/2019] [Indexed: 05/24/2023]
Abstract
BACKGROUND Mobile organisms in marine environments are expected to modify their behavior in response to external stressors. Among environmental drivers of animal movement are long-term climatic indices influencing organism distribution and short-term meteorological events anticipated to alter acute movement behavior. However, few studies exist documenting the response of vagile species to meteorological anomalies in coastal and marine systems. METHODS Here we examined the movements of Eastern brown pelicans (Pelecanus occidentalis carolinensis) in the South Atlantic Bight in response to the passage of three separate hurricane events in 2 years. Pelicans (n = 32) were tracked with GPS satellite transmitters from four colonies in coastal South Carolina, USA, for the entirety of at least one storm event. An Expectation Maximization binary Clustering algorithm was used to discretize pelican behavioral states, which were pooled into 'active' versus 'inactive' states. Multinomial logistic regression was used to assess behavioral state probabilities in relation to changes in barometric pressure and wind velocity. RESULTS Individual pelicans were more likely to remain inactive during tropical cyclone passage compared to baseline conditions generally, although responses varied by hurricane. When inactive, pelicans tended to seek shelter using local geomorphological features along the coastline such as barrier islands and estuarine systems. CONCLUSIONS Our telemetry data showed that large subtropical seabirds such as pelicans may mitigate risk associated with spatially-extensive meteorological events by decreasing daily movements. Sheltering may be related to changes in barometric pressure and wind velocity, and represents a strategy common to several other classes of marine vertebrate predators for increasing survival probabilities.
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Affiliation(s)
- Bradley P. Wilkinson
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC 29634 USA
- South Carolina Cooperative Fish and Wildlife Research Unit, Clemson, SC 29634 USA
| | - Yvan G. Satgé
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC 29634 USA
- South Carolina Cooperative Fish and Wildlife Research Unit, Clemson, SC 29634 USA
| | - Juliet S. Lamb
- Department of Natural Resource Science, University of Rhode Island, Kingston, RI 02881 USA
| | - Patrick G. R. Jodice
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC 29634 USA
- U.S. Geological Survey South Carolina Cooperative Fish and Wildlife Research Unit, Clemson, Clemson, SC 29634 USA
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Zentelis R, Banks S, Roberts JD, Dovers S, Lindenmayer D. Managing military training-related environmental disturbance. J Environ Manage 2017; 204:486-493. [PMID: 28930693 DOI: 10.1016/j.jenvman.2017.09.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 08/17/2017] [Accepted: 09/09/2017] [Indexed: 06/07/2023]
Abstract
Military Training Areas (MTAs) cover at least 2 percent of the Earth's terrestrial surface and occur in all major biomes. These areas are potentially important for biodiversity conservation. The greatest challenge in managing MTAs is balancing the disturbance associated with military training and environmental values. These challenges are unique as no other land use is managed for these types of anthropogenic disturbances in a natural setting. We investigated how military training-related disturbance is best managed on MTAs. Specifically, we explored management options to maximise the amount of military training that can be undertaken on a MTA while minimising the amount of environmental disturbance. MTAs comprise of a number of ranges designed to facilitate different types of military training. We simulated military training-related environmental disturbance at different range usage rates under a typical range rotation use strategy, and compared the results to estimated ecosystem recovery rates from training activities. We found that even at relatively low simulated usage rates, random allocation and random spatial use of training ranges within an MTA resulted in environmental degradation under realistic ecological recovery rates. To avoid large scale environmental degradation, we developed a decision-making tool that details the best method for managing training-related disturbance by determining how training activities can be allocated to training ranges.
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Affiliation(s)
- Rick Zentelis
- Sir Roland Wilson Scholar, The Australian National University, Canberra, 0200, Australia; Fenner School of Environment and Society, The Australian National University, Canberra, 0200, Australia; Australian Department of Defence, Russell, ACT, 2600, Australia.
| | - Sam Banks
- Fenner School of Environment and Society, The Australian National University, Canberra, 0200, Australia.
| | - J Dale Roberts
- Centre of Excellence in Natural Resource Management, University of Western Australia, PO Box 5771, Albany, WA, 6332, Australia.
| | - Stephen Dovers
- Fenner School of Environment and Society, The Australian National University, Canberra, 0200, Australia.
| | - David Lindenmayer
- Fenner School of Environment and Society, The Australian National University, Canberra, 0200, Australia.
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Araújo CVM, Cedeño-Macías LA, Vera-Vera VC, Salvatierra D, Rodríguez ENV, Zambrano U, Kuri S. Predicting the effects of copper on local population decline of 2 marine organisms, cobia fish and whiteleg shrimp, based on avoidance response. Environ Toxicol Chem 2016; 35:405-410. [PMID: 26250074 DOI: 10.1002/etc.3192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 07/25/2015] [Accepted: 08/04/2015] [Indexed: 06/04/2023]
Abstract
The present study focuses on avoidance response to predict population decline of the marine fish Rachycentron canadum (cobia) and larvae of the estuarine shrimp Litopenaeus vannamei (whiteleg shrimp). Avoidance of approximately 60% was recorded for the cobia fry exposed to 1.0 mg Cu/L, 1.60 mg Cu/L, and 1.80 mg Cu/L. For the shrimp larvae, avoidance was approximately 80% for all Cu concentrations. The population decline of cobia fry was conditioned by avoidance in lower concentrations. However, in higher concentrations mortality begins to play an important role. The displacement toward uncontaminated habitats might determine shrimp population decline. A Cu-contaminated environment can determine the habitat selection of both species and, therefore, their local population decline.
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Affiliation(s)
- Cristiano V M Araújo
- Central Department of Research, Ecuadorian Aquatic Ecotoxicology group, Universidad Laica Eloy Alfaro de Manabí, Manta, Ecuador
- Centre of Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Luís A Cedeño-Macías
- Central Department of Research, Ecuadorian Aquatic Ecotoxicology group, Universidad Laica Eloy Alfaro de Manabí, Manta, Ecuador
| | - Victoria C Vera-Vera
- Central Department of Research, Ecuadorian Aquatic Ecotoxicology group, Universidad Laica Eloy Alfaro de Manabí, Manta, Ecuador
| | - David Salvatierra
- Central Department of Research, Ecuadorian Aquatic Ecotoxicology group, Universidad Laica Eloy Alfaro de Manabí, Manta, Ecuador
| | - Elizabeth N V Rodríguez
- Central Department of Research, Ecuadorian Aquatic Ecotoxicology group, Universidad Laica Eloy Alfaro de Manabí, Manta, Ecuador
| | | | - Samir Kuri
- Ocean Farm, Punta Blanca, Manta, Ecuador
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Koofigar HR. Adaptive robust maximum power point tracking control for perturbed photovoltaic systems with output voltage estimation. ISA Trans 2016; 60:285-293. [PMID: 26606851 DOI: 10.1016/j.isatra.2015.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/18/2015] [Accepted: 11/02/2015] [Indexed: 06/05/2023]
Abstract
The problem of maximum power point tracking (MPPT) in photovoltaic (PV) systems, despite the model uncertainties and the variations in environmental circumstances, is addressed. Introducing a mathematical description, an adaptive sliding mode control (ASMC) algorithm is first developed. Unlike many previous investigations, the output voltage is not required to be sensed and the upper bound of system uncertainties and the variations of irradiance and temperature are not required to be known. Estimating the output voltage by an update law, an adaptive-based H∞ tracking algorithm is then developed for the case the perturbations are energy-bounded. The stability analysis is presented for the proposed tracking control schemes, based on the Lyapunov stability theorem. From a comparison viewpoint, some numerical and experimental studies are also presented and discussed.
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Affiliation(s)
- Hamid Reza Koofigar
- Department of Electrical Engineering, University of Isfahan, Isfahan 81746-73441, Iran.
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Spagnuolo V, De Nicola F, Terracciano S, Bargagli R, Baldantoni D, Monaci F, Alfani A, Giordano S. Persistent pollutants and the patchiness of urban green areas as drivers of genetic richness in the epiphytic moss Leptodon smithii. J Environ Sci (China) 2014; 26:2493-2499. [PMID: 25499497 DOI: 10.1016/j.jes.2014.06.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 04/15/2014] [Accepted: 06/17/2014] [Indexed: 06/04/2023]
Abstract
We determined genetic variation and metal and polycyclic aromatic hydrocarbon concentrations in Leptodon smithii moss collected in holm oak stands at cities, outskirts and remote areas of Campania and Tuscany (Italy) to investigate if anthropogenic pressure (pollutant emissions and land use change) affects moss genetic richness. In both regions, metal and polycyclic aromatic hydrocarbon concentrations reflected the trend urban>outskirts>remote areas, excepting Tuscany remote site. In both regions, the moss gene diversity increased from urban to remote areas. The findings suggest the extent and the fragmentation of urban green areas, as drivers of moss genetic richness.
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Affiliation(s)
- Valeria Spagnuolo
- Department of Biology, University of Naples Federico II, via Cinthia 4, Naples 80126, Italy.
| | - Flavia De Nicola
- Department of Science and Technology, University of Sannio, Via Port'Arsa 11, Benevento 82100, Italy.
| | - Stefano Terracciano
- Department of Biology, University of Naples Federico II, via Cinthia 4, Naples 80126, Italy
| | - Roberto Bargagli
- Department of Environmental Sciences, University of Siena, Via Mattioli 4, Siena 53100, Italy
| | - Daniela Baldantoni
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Fabrizio Monaci
- Department of Environmental Sciences, University of Siena, Via Mattioli 4, Siena 53100, Italy
| | - Anna Alfani
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Simonetta Giordano
- Department of Biology, University of Naples Federico II, via Cinthia 4, Naples 80126, Italy
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