scholarly journals An indicator for assessing the status of marine-bird habitats affected by multiple human activities: A novel statistical approach

2021 ◽  
Vol 130 ◽  
pp. 108036
Author(s):  
Moritz Mercker ◽  
Volker Dierschke ◽  
Kees Camphuysen ◽  
Axel Kreutle ◽  
Nele Markones ◽  
...  
2015 ◽  
Vol 96 (5) ◽  
pp. 998-1004 ◽  
Author(s):  
Sam Mugume ◽  
Gilbert Isabirye-Basuta ◽  
Emily Otali ◽  
Rafael Reyna-Hurtado ◽  
Colin A. Chapman

2018 ◽  
Vol 21 (2) ◽  
pp. 155 ◽  
Author(s):  
Rotua Malau ◽  
Ria Azizah ◽  
AB Susanto ◽  
Gunawan Widi Santosa ◽  
Irwani Irwani

Concentration of the Heavy Metal Lead (Pb) in the Seawater, Sediment, and the Seaweed Sargassum sp. in Teluk Awur, Jepara The increasing human activities led to an increase in waste disposal which eventually accumulates and decrease the water quality of rivers and seas. One of the pollutant resulted by human activities is heavy metal. The presence of heavy metals in the waters could directly harm the bioorganisms and indirectly affect human health by food chains. The purpose of this research is to investigate the lead content (Pb) in the water, sediment, and seaweed Sargassum sp., as well as to determine the status of pollution in Teluk Awur waters, Jepara. The research was conducted in November 2017 and January 2018 using descriptive method. Sampling sites were decided by Purposive Sampling Method. Analysis of lead content was conducted using AAS (Atomic Absorption Spectrophotometry). The results showed that the lead content of seawater in Teluk Awur, Jepara, was within 0.003 mg/L and not on the level of concern, according to KepMen LH No. 51/2004. The range of lead content in the sediment was 47- 68,35 mg/kg and considered as polluted, according to NRCC GBW07313. The range of lead content in the seaweed Sargassum sp. was 0.22-0.79 mg/kg and has exceeded the quality standard  specified by PerBPOM No. 23/2017. Meningkatnya  kegiatan  manusia  menyebabkan  peningkatan  pembuangan  limbah  yang pada akhirnya bermuara ke sungai maupun laut, yang mengakibatkan perairan laut menjadi tercemar. Salah satu pencemar akibat aktivitas   manusia   adalah   logam   berat   timbal yang dapat membahayakan kehidupan organisme perairan secara langsung, maupun tidak langsung terhadap kesehatan manusia. Tujuan penelitian ini adalah untuk mengetahui kandungan logam berat Pb pada air, sedimen, dan rumput laut Sargassum sp. serta untuk mengetahui status pencemaran di Perairan Teluk Awur, Jepara. Penelitian dilakukan pada bulan November 2017 dan Januari 2018. Metode penelitian yang digunakan  adalah  metode  deskriptif.  Penentuan  lokasi  penelitian  dilakukan dengan Purposive Sampling Method. Analisis logam berat Pb dilakukan dengan menggunakan AAS (Atomic Absorption Spectrophotometry). Hasil penelitian menunjukan kandungan logam berat Pb di Perairan Teluk Awur, Jepara, pada air laut yaitu 0,003 mg/L dan masih belum tercemar menurut KepMen LH No.51/2004. Kandungan logam berat Pb pada sedimen yaitu berkisar 47 - 68,35 mg/kg dan telah tercemar menurut NRCC GBW07313. Kandungan logam berat Pb pada rumput laut Sargassum sp. yaitu berkisar 0,22 - 0,79 mg/kg dan telah melebihi baku mutu yang ditentukan oleh PerBPOM No. 23 Tahun 2017 


2020 ◽  
Vol 204 ◽  
pp. 01010
Author(s):  
Yuhu Luo ◽  
Nan Lu

In the process of industrialization and urbanization, human activities have caused more and more heavy metal lead to enter the surface soil, causing harm to the health of residents. Analysis of the status of lead pollution in urban surface soils in China found that lead pollution in most cities currently exceeds regional background values. The sources of heavy metals in cities mainly include transportation, industrial emissions, and human activities. At present, the methods for determining sources include three methods: multivariate statistical analysis, geographic information systems, and isotope tracing.


2014 ◽  
Vol 644-650 ◽  
pp. 5399-5402
Author(s):  
Ke Yu ◽  
Fu Zhen Zhang ◽  
Yong Hui Bo ◽  
Jie Liu

With the strengthening of human activities, more and more sulfur had entered soil system. The sulfur pollution of soil had threaten environment and human health. This paper reviews the status, sources and danger of sulfur pollution soils, and the physical-chemical remediation and bioremediation technology are also discussed. In addition, the future study on remediation technology for sulfur pollution soils was prospected.


2021 ◽  
pp. 19-24
Author(s):  
Badar-uz -Zaman ◽  
Huda Khan ◽  
Maryam Tariq

Aims: To observe the status of salinity build up besides inorganic nutrient status at different sites in Kargah and Napuras streams of Gilgit valley. Study Design: one-way ANOVA means using LSD test. Place and Duration of Study: Kargah and Napuras streams and nearby village in Gilgit valley and the duration of the study was 3 months.  Methodology: Soil and water sampling to analyze pertinent salinity parameters besides inorganic nutrient status. Results: Soil and water properties for important salinity parameters were normal at mid point after entering the village areas of Kargah and  Napuras streams. Human activities especially to raise crops by applying fertilizers needs to monitor with a specific time scale in order to avoid salinity build up. 


2019 ◽  
Author(s):  
M. Lebouvier ◽  
P. Lambret ◽  
A. Garnier ◽  
Y. Frenot ◽  
P. Vernon ◽  
...  

AbstractThe flightless beetle Merizodus soledadinus, originating from the Falkland Islands, was introduced to the sub-Antarctic Kerguelen Islands. We compiled the existing information on ship visits and landings on these islands to confirm the introduction date of M. soledadinus. Using data available in the literature, in addition to collecting more than 2000 presence/absence records of M. soledadinus over the 1991-2018 period, we tracked changes of its abundance and geographical distribution. The range expansion of this nonflying insect was initially slow, but has accelerated over the past two decades in parallel to local increased abundances of the insect’s populations. Human activities may have facilitated colonization of some localities by M. soledadinus which is now widely present in the eastern part of the Kerguelen archipelago. This predatory insect represents a major threat for the native invertebrate fauna; in particular, the wingless flies Anatalanta aptera and Calycopteryx moseleyi which are locally displaced and/or eliminated by the beetle. If no control measures, let alone eradication, are practicable, it is essential to limit the transport of this invasive insect along with human activities. Since 2006, the Kerguelen Islands have had the status of a nature reserve, making these results of significant interests for the management of this archipelago, and more generally, emphasizing the importance of long-term biomonitoring programmes for assessing and predicting changes in the distribution of invasive organisms. Strict biosecurity measures have now been established at the Kerguelen Islands, with even greater attention paid to visits to remote sites not yet colonized by M. soledadinus.


Rangifer ◽  
1998 ◽  
Vol 18 (5) ◽  
pp. 131 ◽  
Author(s):  
R. Farnell ◽  
R. Florkiewicz ◽  
G. Kuzyk ◽  
K. Egli

This paper summarizes the population trends as well as research and management programs for woodland caribou {Rangifer tarandus caribou) in Yukon. Most herds are stable although not all are counted regularly and systematic monitoring of herds remains an essential need. Over the past decade the Southern Lakes, Aishihik, and Finlayson herds have been well studied and provide valuable models for guiding Yukon management programs. Over harvest and the spread of agriculture, forestry and mining are ongoing human activities are of concern to caribou managers.


Author(s):  
F. Shi ◽  
X. Li ◽  
H. Xu

The study used the mainstream social media in china - Sina microblogging data combined with nighttime light remote sensing and various geographical data to reveal the pattern of human activities and light pollution of the Jiangxi Provincial National Nature Reserves. Firstly, we performed statistical analysis based on both functional areas and km-grid from the perspective of space and time, and selected the key areas for in-depth study. Secondly, the relationship between microblogging data and nighttime light remote sensing, population, GDP, road coverage, road distance and road type in nature reserves was analyzed by Spearman correlation coefficient method, so the distribution pattern and influencing factors of the microblogging data were explored. Thirdly, a region where the luminance value was greater than 0.2 was defined as a light region. We evaluated the management status by analyzing the distribution of microblogging data in both light area and non-light area. Final results showed that in all nature reserves, the top three were the Lushan Nature Reserve, the Jinggangshan Nature Reserve, the Taohongling National Nature Reserve of Sikas both on the total number and density of microblogging ; microblogging had a significant correlation with nighttime light remote sensing , the GDP, population, road and other factors; the distribution of microblogging near roads in protected area followed power laws; luminous radiance of Lushan Nature Reserve was the highest, with 43 percent of region was light at night; analysis combining nighttime light remote sensing with microblogging data reflected the status of management of nature reserves.


2020 ◽  
Vol 9 (27) ◽  
pp. 5-12 ◽  
Author(s):  
Diego Felipe Arbeláez-Campillo ◽  
Vasyl Ya. Tatsiy ◽  
Magda Julissa Rojas-Bahamón ◽  
Oleg G. Danilyan

Critical thinking is an attribute of consciousness that can be manifested in all human activities where it is required, as a condition of possibility, in the use of critical reason and deliberation. Consequently, it is in the domains of politics that critical thinking is used more frequently, to discuss the scope and concrete significance of the discourses and practices that, from the exercise of public powers, are deployed on intelligent citizenship and with the minimum necessary of information for peer deliberation. The objective of this article is to deconstruct the most common contributions of critical thinking as a form of participation and political deliberation. Methodologically it is a research of documentary design developed in the coordinates of the philosophical essay, next to the Latin American philosopher and the revision of the most popular political theory. Among the main findings, the idea that critical thinking is not the exclusive patrimony of certain self-defined political and ideological tendencies as progressive in the region stands out. It is concluded that, this way of thinking is uncomfortable per se for all the paradigms that serve as the basis for the status quo, in politics and society.


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